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ME
NT
S P
RO
DU
CT
S W
HE
NE
VE
R N
AT
ION
AL
IN
ST
RU
ME
NT
S P
RO
DU
CT
S A
RE
IN
CO
RP
OR
AT
ED
IN
A S
YS
TE
M O
R A
PP
LIC
AT
ION
, IN
CL
UD
ING
, WIT
HO
UT
LIM
ITA
TIO
N, T
HE
AP
PR
OP
RIA
TE
DE
SIG
N,
PR
OC
ES
S A
ND
SA
FE
TY
LE
VE
L O
F S
UC
H S
YS
TE
M O
R A
PP
LIC
AT
ION
.
© N
atio
nal I
nstru
men
ts C
orpo
ratio
nv
Getti
ng S
tarte
d w
ith L
abVI
EW
Cont
ents
Abou
t Thi
s M
anua
lC
onve
ntio
ns...
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
....i
xR
elat
ed D
ocum
enta
tion
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
..x
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Bui
ldin
g a
Vir
tual
Ins
trum
ent.
......
......
......
......
......
......
......
......
......
......
......
......
......
......
...1-
2L
aunc
hing
Lab
VIE
W...
......
......
......
......
......
......
......
......
......
......
......
......
......
.....
1-3
Ope
ning
a N
ew V
I fr
om a
Tem
plat
e...
......
......
......
......
......
......
......
......
......
......
1-4
Add
ing
a C
ontr
ol to
the
Fron
t Pan
el...
......
......
......
......
......
......
......
......
......
......
.1-6
Cha
ngin
g a
Sig
nal T
ype
......
......
......
......
......
......
......
......
......
......
......
......
......
....1
-8W
irin
g O
bjec
ts o
n th
e B
lock
Dia
gram
......
......
......
......
......
......
......
......
......
......
1-10
Run
ning
a V
I....
......
......
......
......
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......
......
......
......
......
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......
......
......
......
.....
1-11
Mod
ifyi
ng a
Sig
nal.
......
......
......
......
......
......
......
......
......
......
......
......
......
......
.....
1-11
Dis
play
ing
Tw
o Si
gnal
s on
a G
raph
......
......
......
......
......
......
......
......
......
......
....1
-15
Cus
tom
izin
g a
Kno
b C
ontr
ol...
......
......
......
......
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......
......
......
......
......
......
......
1-16
Cus
tom
izin
g a
Wav
efor
m G
raph
......
......
......
......
......
......
......
......
......
......
......
...1-
17S
umm
ary
......
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......
1-18
New
Dia
log
Box
and
Tem
plat
e V
Is...
......
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......
......
......
......
......
......
.1-1
8F
ront
Pan
el...
......
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......
......
......
......
......
......
......
......
......
......
....1
-19
Blo
ck D
iagr
am...
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
....1
-19
Fro
nt P
anel
and
Blo
ck D
iagr
am T
ools
......
......
......
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......
......
......
......
......
1-19
Run
ning
and
Sto
ppin
g a
VI.
......
......
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......
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......
......
......
......
......
......
......
....1
-20
Exp
ress
VIs
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
1-20
Lab
VIE
W D
ocum
enta
tion
Res
ourc
es...
......
......
......
......
......
......
......
......
......
....1
-20
Pro
pert
y D
ialo
g B
oxes
......
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......
1-21
Sho
rtcu
ts...
......
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......
.1-2
1
Chap
ter 2
Cust
omiz
ing
a VI
Bui
ldin
g a
VI
from
a B
lank
VI.
......
......
......
......
......
......
......
......
......
......
......
......
......
......
.2-1
Ope
ning
a B
lank
VI.
......
......
......
......
......
......
......
......
......
......
......
......
......
......
....2
-2A
ddin
g an
Exp
ress
VI
Tha
t Sim
ulat
es a
Sig
nal.
......
......
......
......
......
......
......
...2-
2S
earc
hing
the
Hel
p an
d M
odif
ying
a S
igna
l.....
......
......
......
......
......
......
......
.....
2-3
Cus
tom
izin
g a
Use
r In
terf
ace
from
the
Blo
ck D
iagr
am...
......
......
......
......
......
.2-5
Con
figu
ring
a V
I to
Run
Con
tinu
ousl
y un
til t
he U
ser
Stop
s It
......
......
......
.....
2-6
Usi
ng th
e E
rror
Lis
t Win
dow
......
......
......
......
......
......
......
......
......
......
......
......
..2-
8C
ontr
olli
ng th
e Sp
eed
of E
xecu
tion
......
......
......
......
......
......
......
......
......
......
....2
-9
Cont
ents
Getti
ng S
tarte
d w
ith L
abVI
EWvi
ni.c
om
Usi
ng a
Tab
le to
Dis
play
Dat
a...
......
......
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......
......
......
......
...2-
9S
earc
hing
for
Exa
mpl
es...
......
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......
.2-1
1S
umm
ary.
......
......
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......
......
......
......
......
.....
2-12
Usi
ng th
e L
abV
IEW
Hel
p R
esou
rces
......
......
......
......
......
......
......
......
......
......
.2-1
2C
usto
miz
ing
the
Blo
ck D
iagr
am C
ode
......
......
......
......
......
......
......
......
......
.....
2-13
Cre
atin
g C
ontr
ols
and
Indi
cato
rs...
......
......
......
......
......
......
......
......
...2-
13C
ontr
olli
ng W
hen
a V
I St
ops
Run
ning
......
......
......
......
......
......
......
...2-
14E
rror
s an
d B
roke
n W
ires
......
......
......
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......
......
......
......
......
......
......
2-14
Dis
play
ing
Dat
a in
a T
able
......
......
......
......
......
......
......
......
......
......
...2-
14U
sing
the
NI
Exa
mpl
e F
inde
r....
......
......
......
......
......
......
......
......
......
......
......
...2-
14S
hort
cuts
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
....2
-15
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
lB
uild
ing
an A
naly
sis
VI.
......
......
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.....
3-2
Mod
ifyi
ng a
VI
Cre
ated
fro
m a
Tem
plat
e...
......
......
......
......
......
......
......
......
...3-
2A
ddin
g a
Sig
nal.
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
....3
-4A
ddin
g T
wo
Sig
nals
......
......
......
......
......
......
......
......
......
......
......
......
......
......
....3
-5F
ilte
ring
a S
igna
l....
......
......
......
......
......
......
......
......
......
......
......
......
......
......
.....
3-7
Mod
ifyi
ng th
e A
ppea
ranc
e of
Gra
phs.
......
......
......
......
......
......
......
......
......
......
3-8
Ana
lyzi
ng th
e A
mpl
itud
e of
a S
igna
l....
......
......
......
......
......
......
......
......
......
....3
-9C
ontr
olli
ng th
e Sp
eed
of E
xecu
tion
......
......
......
......
......
......
......
......
......
......
....3
-9A
ddin
g a
War
ning
Lig
ht...
......
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......
......
......
3-10
Set
ting
a W
arni
ng L
evel
Lim
it...
......
......
......
......
......
......
......
......
......
......
......
...3-
11W
arni
ng th
e U
ser.
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
.3-1
2C
onfi
guri
ng a
VI
to S
ave
Dat
a to
a F
ile.
......
......
......
......
......
......
......
......
......
...3-
13S
avin
g D
ata
to a
Fil
e....
......
......
......
......
......
......
......
......
......
......
......
......
......
.....
3-14
Add
ing
a B
utto
n T
hat S
tore
s D
ata
Whe
n C
lick
ed...
......
......
......
......
......
......
...3-
14S
avin
g D
ata
Whe
n P
rom
pted
by
a U
ser.
......
......
......
......
......
......
......
......
......
...3-
15V
iew
ing
Sav
ed D
ata.
......
......
......
......
......
......
......
......
......
......
......
......
......
......
...3-
16S
umm
ary.
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
.....
3-17
Con
trol
s an
d In
dica
tors
......
......
......
......
......
......
......
......
......
......
......
......
......
.....
3-17
Fil
teri
ng D
ata
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
..3-
17S
avin
g D
ata
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
.....
3-17
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(W
indo
ws)
Har
dwar
e an
d S
oftw
are
Req
uire
men
ts...
......
......
......
......
......
......
......
......
......
......
......
.....
4-1
Acq
uiri
ng a
Sig
nal i
n N
I-D
AQ
mx
......
......
......
......
......
......
......
......
......
......
......
......
......
..4-
2C
reat
ing
an N
I-D
AQ
mx
Tas
k...
......
......
......
......
......
......
......
......
......
......
......
....4
-2G
raph
ing
Dat
a fr
om a
DA
Q D
evic
e...
......
......
......
......
......
......
......
......
......
......
4-5
Cont
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
nvi
iGe
tting
Sta
rted
with
Lab
VIEW
Edi
ting
an
NI-
DA
Qm
x T
ask
......
......
......
......
......
......
......
......
......
......
......
......
...4-
6V
isua
lly C
ompa
ring
Tw
o V
olta
ge R
eadi
ngs.
......
......
......
......
......
......
......
......
..4-
7C
omm
unic
atin
g w
ith
an I
nstr
umen
t: U
sing
Ins
trum
ent D
rive
rs a
nd th
e In
stru
men
t I/O
Ass
ista
nt...
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
4-7
Get
ting
Star
ted
with
the
Inst
rum
ent D
rive
r Fi
nder
......
......
......
......
......
......
......
4-8
Find
ing
and
Inst
allin
g In
stru
men
t Dri
vers
......
......
......
......
......
......
......
......
......
4-8
Usi
ng I
nstr
umen
t Dri
vers
......
......
......
......
......
......
......
......
......
......
......
......
......
..4-
9Se
lect
ing
an I
nstr
umen
t Usi
ng th
e In
stru
men
t I/O
Ass
ista
nt...
......
......
......
.....
4-10
Acq
uiri
ng a
nd P
arsi
ng I
nfor
mat
ion
for
an I
nstr
umen
t....
......
......
......
......
......
..4-
11W
irin
g a
Com
man
d to
an
Inst
rum
ent.
......
......
......
......
......
......
......
......
......
......
.4-1
2S
umm
ary
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
4-12
DA
Q A
ssis
tant
Exp
ress
VI.
......
......
......
......
......
......
......
......
......
......
......
......
.....
4-12
Tas
ks in
NI-
DA
Qm
x...
......
......
......
......
......
......
......
......
......
......
......
......
......
......
4-13
Inst
rum
ent D
rive
rs...
......
......
......
......
......
......
......
......
......
......
......
......
......
......
....4
-13
Inst
rum
ent I
/O A
ssis
tant
Exp
ress
VI.
......
......
......
......
......
......
......
......
......
......
..4-
14
Chap
ter 5
Usin
g Ot
her L
abVI
EW F
eatu
res
All
Con
trol
s an
d In
dica
tors
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
..5-
1A
ll V
Is a
nd F
unct
ions
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
....5
-2V
Is...
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
....5
-2F
unct
ions
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
...5-
3D
ata
Typ
es...
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
5-3
Whe
n to
Use
Oth
er L
abV
IEW
Fea
ture
s...
......
......
......
......
......
......
......
......
......
......
......
...5-
4
Appe
ndix
ATe
chni
cal S
uppo
rt an
d Pr
ofes
sion
al S
ervi
ces
Glos
sary
Inde
x
© N
atio
nal I
nstru
men
ts C
orpo
ratio
nix
Getti
ng S
tarte
d w
ith L
abVI
EW
Abou
t Thi
s M
anua
l
Use
this
man
ual a
s a
tuto
rial
to f
amil
iari
ze y
ours
elf
wit
h th
e L
abV
IEW
gr
aphi
cal p
rogr
amm
ing
envi
ronm
ent a
nd th
e ba
sic
Lab
VIE
W fe
atur
es y
ou
use
to b
uild
dat
a ac
quis
ition
and
inst
rum
ent c
ontr
ol a
pplic
atio
ns.
Thi
s m
anua
l con
tain
s ex
erci
ses
that
you
can
use
to le
arn
how
to d
evel
op
basi
c ap
plic
atio
ns in
Lab
VIE
W. T
hese
exe
rcis
es ta
ke a
sho
rt a
mou
nt o
f tim
e to
com
plet
e an
d he
lp y
ou g
et s
tart
ed w
ith L
abV
IEW
.
The
end
of e
ach
chap
ter i
nclu
des
a su
mm
ary
of th
e m
ain
conc
epts
taug
ht in
th
at c
hapt
er. U
se th
ese
sum
mar
ies
to r
evie
w w
hat y
ou le
arne
d.
Conv
entio
nsT
he f
ollo
win
g co
nven
tions
app
ear
in th
is m
anua
l:
»T
he »
sym
bol l
eads
you
thro
ugh
nest
ed m
enu
item
s an
d di
alog
box
opt
ions
to
a f
inal
act
ion.
The
seq
uenc
e F
ile»P
age
Setu
p»O
ptio
ns d
irec
ts y
ou to
pu
ll do
wn
the
File
men
u, s
elec
t the
Pag
eSe
tup
item
, and
sel
ect O
ptio
ns
from
the
last
dia
log
box.
Thi
s ic
on d
enot
es a
tip,
whi
ch a
lert
s yo
u to
adv
isor
y in
form
atio
n.
Thi
s ic
on d
enot
es a
not
e, w
hich
ale
rts
you
to im
port
ant i
nfor
mat
ion.
bold
Bol
d te
xt d
enot
es it
ems
that
you
mus
t sel
ect o
r cl
ick
in th
e so
ftw
are,
suc
h as
men
u it
ems
and
dial
og b
ox o
ptio
ns. B
old
text
als
o de
note
s pa
ram
eter
na
mes
, con
trol
s an
d in
dica
tors
on
the
fron
t pan
el, d
ialo
g bo
xes,
sec
tions
of
dial
og b
oxes
, men
u na
mes
, and
pal
ette
nam
es.
ital
icIt
alic
text
den
otes
var
iabl
es, e
mph
asis
, a c
ross
-ref
eren
ce, o
r an
intr
oduc
tion
to
a k
ey c
once
pt. I
tali
c te
xt a
lso
deno
tes
text
that
is a
pla
ceho
lder
for a
wor
d or
val
ue th
at y
ou m
ust s
uppl
y.
monospace
Text
in th
is f
ont d
enot
es te
xt o
r ch
arac
ters
that
you
sho
uld
ente
r fr
om th
e ke
yboa
rd, s
ecti
ons
of c
ode,
pro
gram
min
g ex
ampl
es, a
nd s
ynta
x ex
ampl
es.
Thi
s fo
nt is
als
o us
ed fo
r the
pro
per n
ames
of d
isk
driv
es, p
aths
, dir
ecto
ries
, pr
ogra
ms,
sub
prog
ram
s, s
ubro
utin
es, d
evic
e na
mes
, ope
ratio
ns, v
aria
bles
, fi
lena
mes
, and
ext
ensi
ons.
Abou
t Thi
s M
anua
l
Getti
ng S
tarte
d w
ith L
abVI
EWx
ni.c
om
monospace bold
Bol
d te
xt in
this
font
den
otes
the
mes
sage
s an
d re
spon
ses
that
the
com
pute
r au
tom
atic
ally
pri
nts
to th
e sc
reen
. Thi
s fo
nt a
lso
emph
asiz
es li
nes
of c
ode
that
are
dif
fere
nt f
rom
the
othe
r ex
ampl
es.
Plat
form
Text
in th
is f
ont d
enot
es a
spe
cifi
c pl
atfo
rm a
nd in
dica
tes
that
the
text
fo
llow
ing
it ap
plie
s on
ly to
that
pla
tfor
m.
righ
t-cl
ick
(Mac
OS
X) P
ress
<C
omm
and>
-cli
ck to
per
form
the
sam
e ac
tion
as
a ri
ght-
clic
k.
Rela
ted
Docu
men
tatio
nT
he fo
llow
ing
docu
men
ts c
onta
in in
form
atio
n th
at y
ou m
ay fi
nd h
elpf
ul a
s yo
u re
ad th
is m
anua
l:
•L
abV
IEW
Rel
ease
Not
es—
Use
thes
e re
leas
e no
tes
to in
stal
l and
un
inst
all L
abV
IEW
. The
rel
ease
not
es a
lso
desc
ribe
the
syst
em
requ
irem
ents
for
the
Lab
VIE
W s
oftw
are,
incl
udin
g th
e L
abV
IEW
A
ppli
cati
on B
uild
er.
•L
abV
IEW
Hel
p—U
se th
e L
abV
IEW
Hel
p to
acc
ess
info
rmat
ion
abou
t L
abV
IEW
pro
gram
min
g co
ncep
ts, s
tep-
by-s
tep
inst
ruct
ions
for
usi
ng
Lab
VIE
W, a
nd re
fere
nce
info
rmat
ion
abou
t Lab
VIE
W V
Is, f
unct
ions
, pa
lett
es, m
enus
, too
ls, p
rope
rtie
s, m
etho
ds, e
vent
s, d
ialo
g bo
xes,
and
so
on.
The
Lab
VIE
W H
elp
also
list
s th
e L
abV
IEW
doc
umen
tati
on
reso
urce
s av
aila
ble
from
Nat
iona
l Ins
trum
ents
. Acc
ess
the
Lab
VIE
W
Hel
p by
sel
ecti
ng H
elp»
Lab
VIE
W H
elp.
•L
abV
IEW
Qui
ck R
efer
ence
Car
d—U
se th
is c
ard
as a
ref
eren
ce f
or
info
rmat
ion
abou
t hel
p re
sour
ces,
key
boar
d sh
ortc
uts,
dat
a ty
pe
term
inal
s, a
nd to
ols
for
editi
ng, e
xecu
tion,
and
deb
uggi
ng.
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
1Ge
tting
Sta
rted
with
Lab
VIEW1
Getti
ng S
tarte
d w
ith L
abVI
EW
Virtu
al In
stru
men
ts
Lab
VIE
W p
rogr
ams
are
call
ed v
irtu
al in
stru
men
ts, o
r V
Is, b
ecau
se
thei
rap
pear
ance
and
ope
rati
on im
itat
e ph
ysic
al in
stru
men
ts, s
uch
as
osci
llos
cope
s an
d m
ulti
met
ers.
Lab
VIE
W c
onta
ins
a co
mpr
ehen
sive
set
of
tool
s fo
r acq
uiri
ng, a
naly
zing
, dis
play
ing,
and
sto
ring
dat
a, a
s w
ell a
s to
ols
to h
elp
you
trou
bles
hoot
cod
e yo
u w
rite
.
In L
abV
IEW
, you
bui
ld a
use
r in
terf
ace,
or
fron
t pan
el, w
ith c
ontr
ols
and
indi
cato
rs. C
ontr
ols
are
knob
s, p
ush
butto
ns, d
ials
, and
oth
er in
put
mec
hani
sms.
Indi
cato
rs a
re g
raph
s, L
ED
s, a
nd o
ther
out
put d
ispl
ays.
Aft
er
you
buil
d th
e fr
ont p
anel
, you
add
cod
e us
ing
VIs
and
str
uctu
res
to c
ontr
ol
the
fron
t pan
el o
bjec
ts. T
he b
lock
dia
gram
con
tain
s th
is c
ode.
You
can
use
Lab
VIE
W to
com
mun
icat
e w
ith h
ardw
are
such
as
data
ac
quis
ition
, vis
ion,
and
mot
ion
cont
rol d
evic
es, a
s w
ell a
s G
PIB
, PX
I, V
XI,
R
S232
, and
RS4
85 in
stru
men
ts.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Getti
ng S
tarte
d w
ith L
abVI
EW1-
2ni
.com
Build
ing
a Vi
rtual
Inst
rum
ent
In th
e fo
llow
ing
exer
cise
s, y
ou w
ill b
uild
a V
I th
at g
ener
ates
a s
igna
l and
di
spla
ys th
at s
igna
l in
a gr
aph.
Aft
er y
ou c
ompl
ete
the
exer
cise
s, th
e fr
ont
pane
l of
the
VI
will
look
sim
ilar
to th
e fr
ont p
anel
in F
igur
e1-
1.
You
can
com
plet
e th
e ex
erci
ses
in th
is c
hapt
er in
app
roxi
mat
ely
40 m
inut
es.
Figu
re 1
-1.
Fron
t Pan
el o
f the
Acq
uirin
g a
Sign
al V
I
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
3Ge
tting
Sta
rted
with
Lab
VIEW
Laun
chin
g La
bVIE
WT
he G
etti
ng S
tart
ed w
indo
w, s
how
n in
Fig
ure
1-2,
app
ears
whe
n yo
u la
unch
Lab
VIE
W. U
se th
is w
indo
w to
cre
ate
new
VIs
, sel
ect a
mon
g th
e m
ost r
ecen
tly
open
ed L
abV
IEW
fil
es, f
ind
exam
ples
, and
laun
ch th
e L
abV
IEW
Hel
p. Y
ou a
lso
can
acce
ss in
form
atio
n an
d re
sour
ces
to h
elp
you
lear
n ab
out L
abV
IEW
, suc
h as
spe
cifi
c m
anua
ls, h
elp
topi
cs, a
nd
reso
urce
s on
the
Nat
iona
l Ins
trum
ents
Web
sit
e, ni.com
.
Figu
re 1
-2.
Getti
ng S
tarte
d W
indo
w
The
Get
ting
Sta
rted
win
dow
dis
appe
ars
whe
n yo
u op
en a
n ex
istin
g fi
le o
r cr
eate
a n
ew f
ile.
The
Get
ting
Sta
rted
win
dow
rea
ppea
rs w
hen
you
clos
e al
l ope
n fr
ont p
anel
s an
d bl
ock
diag
ram
s. Y
ou a
lso
can
disp
lay
the
win
dow
fr
om th
e fr
ont p
anel
or
bloc
k di
agra
m b
y se
lect
ing
Vie
w»G
etti
ng S
tart
ed
Win
dow
.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Getti
ng S
tarte
d w
ith L
abVI
EW1-
4ni
.com
Open
ing
a Ne
w V
I fro
m a
Tem
plat
eL
abV
IEW
pro
vide
s bu
ilt-
in te
mpl
ate
VIs
that
incl
ude
the
subV
Is,
func
tion
s, s
truc
ture
s, a
nd f
ront
pan
el o
bjec
ts y
ou n
eed
to g
et s
tart
ed
buil
ding
com
mon
mea
sure
men
t app
lica
tion
s.
Com
plet
e th
e fo
llow
ing
step
s to
cre
ate
a V
I th
at g
ener
ates
a s
igna
l and
di
spla
ys it
in th
e fr
ont p
anel
win
dow
.
1.L
aunc
h L
abV
IEW
.
2.In
the
Get
ting
Sta
rted
win
dow
, cli
ck th
e N
ew o
r V
I fr
om T
empl
ate
link
to d
ispl
ay th
e N
ew d
ialo
g bo
x.
3.Fr
om th
e C
reat
e N
ew li
st, s
elec
t VI»
Fro
m T
empl
ate»
Tut
oria
l (G
etti
ng S
tart
ed)»
Gen
erat
e an
d D
ispl
ay. T
his
tem
plat
e V
I ge
nera
tes
and
disp
lays
a s
igna
l.
A p
revi
ew a
nd a
bri
ef d
escr
ipti
on o
f th
e te
mpl
ate
VI
appe
ar in
the
Des
crip
tion
sec
tion.
Fig
ure
1-3
show
s th
e N
ew d
ialo
g bo
x an
d th
e pr
evie
w o
f th
e G
ener
ate
and
Dis
play
tem
plat
e V
I.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
5Ge
tting
Sta
rted
with
Lab
VIEW
Figu
re 1
-3.
New
Dia
log
Box
4.C
lick
the
OK
but
ton
to c
reat
e a
VI
from
the
tem
plat
e. Y
ou a
lso
can
doub
le-c
lick
the
nam
e of
the
tem
plat
e V
I in
the
Cre
ate
New
list
to
crea
te a
VI
from
a te
mpl
ate.
Lab
VIE
W d
ispl
ays
two
win
dow
s: th
e fr
ont p
anel
win
dow
and
the
bloc
k di
agra
m w
indo
w.
5.E
xam
ine
the
fron
t pan
el w
indo
w.
The
use
r int
erfa
ce, o
r fro
nt p
anel
, app
ears
wit
h a
gray
bac
kgro
und
and
incl
udes
con
trol
s an
d in
dica
tors
. The
titl
e ba
r of
the
fron
t pan
el
indi
cate
s th
at th
is w
indo
w is
the
fron
t pan
el f
or th
e G
ener
ate
and
Dis
play
VI.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Getti
ng S
tarte
d w
ith L
abVI
EW1-
6ni
.com
Note
If th
e fr
ont p
anel
is n
ot v
isib
le, y
ou c
an d
ispl
ay th
e fr
ont p
anel
by
sele
ctin
g W
indo
w»S
how
Fro
nt P
anel
. You
als
o ca
n sw
itch
bet
wee
n th
e fr
ont p
anel
win
dow
and
bl
ock
diag
ram
win
dow
at a
ny ti
me
by p
ress
ing
the
<C
trl-
E>
key
s. T
he <
Ctr
l> k
ey in
ke
yboa
rd s
hort
cuts
cor
resp
onds
to th
e (M
ac O
S X)
<O
ptio
n> o
r <
Com
man
d> k
ey o
r (L
inux
)<A
lt>
key
.
6.Se
lect
Win
dow
»Sho
w B
lock
Dia
gram
and
exa
min
e th
e bl
ock
diag
ram
of
the
VI.
The
blo
ck d
iagr
am a
ppea
rs w
ith
a w
hite
bac
kgro
und
and
incl
udes
VIs
an
d st
ruct
ures
that
con
trol
the
fron
t pan
el o
bjec
ts. T
he ti
tle b
ar o
f th
e bl
ock
diag
ram
indi
cate
s th
at th
is w
indo
w is
the
bloc
k di
agra
m f
or th
e G
ener
ate
and
Dis
play
VI.
7.O
n th
e fr
ont p
anel
tool
bar,
clic
k th
e R
un b
utto
n, s
how
n at
left
. You
al
so c
an p
ress
the
<C
trl-
R>
key
s to
run
a V
I.
A s
ine
wav
e ap
pear
s on
the
grap
h in
the
fron
t pan
el w
indo
w.
8.St
op th
e V
I by
clic
king
the
fron
t pan
el S
TO
P b
utto
n, s
how
n at
left
.
Addi
ng a
Con
trol t
o th
e Fr
ont P
anel
Fron
t pan
el c
ontr
ols
sim
ulat
e th
e in
put m
echa
nism
s on
a p
hysi
cal
inst
rum
ent a
nd s
uppl
y da
ta to
the
bloc
k di
agra
m o
f th
e V
I. M
any
phys
ical
in
stru
men
ts h
ave
knob
s yo
u ca
n tu
rn to
cha
nge
an in
put v
alue
.
Com
plet
e th
e fo
llow
ing
step
s to
add
a k
nob
cont
rol t
o th
e fr
ont p
anel
.
Tip
Thr
ough
out t
hese
exe
rcis
es, y
ou c
an u
ndo
rece
nt e
dits
by
sele
ctin
g E
dit»
Und
o or
pr
essi
ng th
e <
Ctr
l-Z
> k
eys.
1.If
the
Con
trol
s pa
lette
, sho
wn
in F
igur
e1-
4, is
not
vis
ible
in th
e fr
ont
pane
l win
dow
, sel
ect V
iew
»Con
trol
s P
alet
te.
Tip
You
can
righ
t-cl
ick
any
blan
k sp
ace
in th
e fr
ont p
anel
or t
he b
lock
dia
gram
to d
ispl
ay
a te
mpo
rary
ver
sion
of
the
Con
trol
s or
Fun
ctio
ns p
alet
te. T
he C
ontr
ols
or F
unct
ions
pa
lette
app
ears
with
a th
umbt
ack
icon
in th
e up
per
left
cor
ner.
Clic
k th
e th
umbt
ack
to p
in
the
pale
tte s
o it
is n
o lo
nger
tem
pora
ry.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
7Ge
tting
Sta
rted
with
Lab
VIEW
2.If
you
are
a n
ew L
abV
IEW
use
r, th
e C
ontr
ols
pale
tte
open
s w
ith
the
Exp
ress
pal
ette
, sho
wn
in F
igur
e1-
4, v
isib
le b
y de
faul
t. If
you
do
not
see
the
Exp
ress
pal
ette
, cli
ck E
xpre
ss o
n th
e C
ontr
ols
pale
tte
to
disp
lay
the
Exp
ress
pal
ette
.
Figu
re 1
-4.
Cont
rols
Pal
ette
3.M
ove
the
curs
or o
ver
the
icon
s on
the
Exp
ress
pal
ette
to lo
cate
the
Num
eric
Con
trol
s pa
lett
e.
Whe
n yo
u m
ove
the
curs
or o
ver
icon
s on
the
Con
trol
s pa
lett
e, th
e na
me
of th
e su
bpal
ette
, con
trol
, or i
ndic
ator
app
ears
in a
tip
stri
p be
low
th
e ic
on.
Note
Som
e pa
lette
obj
ects
dis
play
a s
hort
nam
e on
the
pale
tte th
at is
dif
fere
nt f
rom
the
nam
e th
at a
ppea
rs in
the
tip
stri
p. T
he s
hort
nam
e ab
brev
iate
s th
e na
me
of th
e pa
lette
obj
ect
so th
at it
fit
s in
the
spac
e av
aila
ble
on th
e pa
lette
. If
you
have
dif
ficu
lty f
indi
ng a
pal
ette
ob
ject
by
its
shor
t nam
e, u
se th
e Se
arch
but
ton
on th
e C
ontr
ols
or F
unct
ions
pal
ette
to
find
the
pale
tte
obje
ct b
y na
me.
4.C
lick
the
Num
eric
Con
trol
s ic
on to
dis
play
the
Num
eric
Con
trol
s pa
lett
e.
5.C
lick
the
Kno
b co
ntro
l on
the
Num
eric
Con
trol
s pa
lette
to a
ttach
the
cont
rol t
o th
e cu
rsor
, and
then
add
the
knob
to th
e fr
ont p
anel
to th
e le
ft
of th
e w
avef
orm
gra
ph.
You
wil
l use
this
kno
b in
a la
ter
exer
cise
to c
ontr
ol th
e am
plit
ude
of a
si
gnal
.
6.Se
lect
File
»Sav
e A
s an
d sa
ve th
e V
I as Acquiring a Signal.vi
in
an e
asil
y ac
cess
ible
loca
tion
.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Getti
ng S
tarte
d w
ith L
abVI
EW1-
8ni
.com
Chan
ging
a S
igna
l Typ
eT
he b
lock
dia
gram
has
a b
lue
icon
labe
led
Sim
ulat
e Si
gnal
. Thi
s ic
on
repr
esen
ts th
e Si
mul
ate
Sign
al E
xpre
ss V
I. A
n E
xpre
ss V
I is
a c
ompo
nent
of
the
bloc
k di
agra
m th
at y
ou c
an c
onfi
gure
to p
erfo
rm c
omm
on
mea
sure
men
t tas
ks. T
he S
imul
ate
Sign
al E
xpre
ss V
I sim
ulat
es a
sin
e w
ave
by d
efau
lt.
Com
plet
e th
e fo
llow
ing
step
s to
cha
nge
this
sig
nal t
o a
saw
toot
h w
ave.
1.D
ispl
ay th
e bl
ock
diag
ram
by
pres
sing
the
<C
trl-
E>
key
s or
by
clic
king
the
bloc
k di
agra
m.
Loc
ate
the
Sim
ulat
e Si
gnal
Exp
ress
VI,
sho
wn
at le
ft. T
he S
imul
ate
Sign
al E
xpre
ss V
I si
mul
ates
a s
igna
l bas
ed o
n th
e co
nfig
urat
ion
that
yo
u sp
ecif
y.
2.R
ight
-cli
ck th
e Si
mul
ate
Sign
al E
xpre
ss V
I and
sel
ect P
rope
rtie
s fro
m
the
shor
tcut
men
u to
dis
play
the
Con
figu
re S
imul
ate
Sign
al
dial
ogbo
x. (M
ac O
S X)
Pre
ss <
Com
man
d>-c
lick
to p
erfo
rm th
e sa
me
acti
on a
s ri
ght-
clic
k.
Tip
You
als
o ca
n do
uble
-cli
ck th
e E
xpre
ss V
I to
dis
play
the
Con
figu
re S
imul
ate
Sign
al
dial
ogbo
x.
3.Se
lect
Saw
toot
h fr
om th
e Si
gnal
typ
e pu
ll-d
own
men
u.
The
wav
efor
m o
n th
e gr
aph
in th
e R
esul
t Pre
view
sec
tion
cha
nges
to
a sa
wto
oth
wav
e. T
he C
onfi
gure
Sim
ulat
e Si
gnal
dia
log
box
shou
ld
appe
ar s
imil
ar to
Fig
ure
1-5.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
9Ge
tting
Sta
rted
with
Lab
VIEW
Figu
re 1
-5.
Conf
igur
e Si
mul
ate
Sign
al D
ialo
g Bo
x
4.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se th
e C
onfi
gure
Sim
ulat
e Si
gnal
dia
log
box.
5.M
ove
the
curs
or o
ver
the
dow
n ar
row
s at
the
bott
om o
f th
e Si
mul
ate
Sign
al E
xpre
ss V
I. T
he d
own
arro
ws
indi
cate
you
can
rev
eal h
idde
n in
puts
and
out
puts
by
exte
ndin
g th
e bo
rder
of
the
Exp
ress
VI.
6.W
hen
a do
uble
-hea
ded
arro
w a
ppea
rs, s
how
n at
left
, cli
ck a
nd d
rag
the
bord
er o
f the
Exp
ress
VI t
o ad
d tw
o ro
ws.
Whe
n yo
u re
leas
e th
e bo
rder
, th
e A
mpl
itud
e in
put a
ppea
rs.
In F
igur
e1-
5, n
otic
e th
at A
mpl
itud
e is
an
opti
on in
the
Con
figu
re
Sim
ulat
e Si
gnal
dia
log
box.
Whe
n in
puts
, suc
h as
Am
plit
ude,
app
ear
on th
e bl
ock
diag
ram
and
in th
e co
nfig
urat
ion
dial
og b
ox, y
ou c
an
conf
igur
e th
e in
puts
in e
ither
loca
tion.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Getti
ng S
tarte
d w
ith L
abVI
EW1-
10ni
.com
Wiri
ng O
bjec
ts o
n th
e Bl
ock
Diag
ram
To
use
the
knob
to c
hang
e th
e am
plit
ude
of th
e si
gnal
, you
mus
t con
nect
tw
o ob
ject
s on
the
bloc
k di
agra
m.
Com
plet
e th
e fo
llow
ing
step
s to
wir
e th
e kn
ob to
the
Am
plit
ude
inpu
t of
the
Sim
ulat
e Si
gnal
Exp
ress
VI.
1.O
n th
e bl
ock
diag
ram
, mov
e th
e cu
rsor
ove
r the
Kno
b te
rmin
al, s
how
n at
left
.
The
cur
sor
beco
mes
an
arro
w, o
r th
e Po
siti
onin
g to
ol, s
how
n at
left
. U
se th
e Po
sitio
ning
tool
to s
elec
t, po
sitio
n, a
nd r
esiz
e ob
ject
s.
Note
You
can
resi
ze o
nly
loop
s an
d st
ruct
ures
on
the
bloc
k di
agra
m. G
o to
the
fron
t pan
el
to r
esiz
e ob
ject
s yo
u ha
ve a
dded
to th
e fr
ont p
anel
.
2.U
se th
e Po
sitio
ning
tool
to s
elec
t the
Kno
b te
rmin
al a
nd m
ake
sure
it
is to
the
left
of t
he S
imul
ate
Sign
al E
xpre
ss V
I and
insi
de th
e gr
ay lo
op,
show
n at
left
.
The
term
inal
s in
side
the
loop
are
rep
rese
ntat
ions
of
fron
t pan
el
cont
rols
and
indi
cato
rs. T
erm
inal
s ar
e en
try
and
exit
por
ts th
at
exch
ange
info
rmat
ion
betw
een
the
fron
t pan
el a
nd b
lock
dia
gram
.
3.D
esel
ect t
he K
nob
term
inal
by
clic
king
a b
lank
spa
ce o
n th
e bl
ock
diag
ram
. If
you
wan
t to
use
a di
ffer
ent t
ool w
ith a
n ob
ject
, you
mus
t de
sele
ct th
e ob
ject
to s
wit
ch th
e to
ol.
4.M
ove
the
curs
or o
ver
the
arro
w o
n th
e K
nob
term
inal
, sho
wn
at le
ft.
The
cur
sor b
ecom
es a
wir
e sp
ool,
or th
e W
irin
g to
ol, s
how
n at
left
. Use
th
e W
irin
g to
ol to
wir
e ob
ject
s to
geth
er o
n th
e bl
ock
diag
ram
.
5.W
hen
the
Wir
ing
tool
app
ears
, cli
ck th
e ar
row
on
the
Kno
b te
rmin
al
and
then
clic
k th
e ar
row
on
the
Am
plit
ude
inpu
t of t
he S
imul
ate
Sign
al
Exp
ress
VI,
sho
wn
at le
ft, t
o w
ire
the
two
obje
cts
toge
ther
.
A w
ire
appe
ars
and
conn
ects
the
two
obje
cts.
Dat
a fl
ows
alon
g th
is
wir
e fr
om th
e K
nob
term
inal
to th
e E
xpre
ss V
I.
6.Se
lect
File
»Sav
e to
sav
e th
e V
I.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
11Ge
tting
Sta
rted
with
Lab
VIEW
Runn
ing
a VI
Run
ning
a V
I ex
ecut
es th
e so
luti
on.
Com
plet
e th
e fo
llow
ing
step
s to
run
the
Acq
uiri
ng a
Sig
nal V
I.
1.D
ispl
ay th
e fr
ont p
anel
by
pres
sing
the
<C
trl-
E>
key
s or
by
clic
king
th
e fr
ont p
anel
.
2.C
lick
the
Run
but
ton
or p
ress
the
<C
trl-
R>
key
s to
run
the
VI.
3.M
ove
the
curs
or o
ver
the
knob
.
The
cur
sor
beco
mes
a h
and,
or
the
Ope
rati
ng to
ol, s
how
n at
left
. Use
th
e O
pera
ting
tool
to c
hang
e th
e va
lue
of a
con
trol
.
4.U
sing
the
Ope
ratin
g to
ol, t
urn
the
knob
to a
djus
t the
am
plitu
de o
f th
e sa
wto
oth
wav
e.
The
am
plit
ude
of th
e sa
wto
oth
wav
e ch
ange
s as
you
turn
the
knob
. As
you
chan
ge th
e am
plitu
de, t
he O
pera
ting
tool
dis
play
s a
tip s
trip
that
in
dica
tes
the
num
eric
val
ue o
f the
kno
b. T
he y
-axi
s on
the
grap
h sc
ales
au
tom
atic
ally
to a
ccou
nt f
or th
e ch
ange
in a
mpl
itud
e.
To in
dica
te th
at th
e V
I is
run
ning
, the
Run
but
ton
chan
ges
to a
da
rken
ed a
rrow
, sho
wn
at le
ft. Y
ou c
an c
hang
e th
e va
lue
of m
ost
cont
rols
whi
le a
VI r
uns,
but
you
can
not e
dit t
he V
I in
othe
r way
s w
hile
th
e V
I ru
ns.
5.C
lick
the
STO
P b
utto
n, s
how
n at
left
, to
stop
the
VI.
The
ST
OP
but
ton
stop
s th
e V
I af
ter
the
loop
com
plet
es it
s cu
rren
t it
erat
ion.
The
Abo
rt E
xecu
tion
but
ton,
sho
wn
at le
ft, s
tops
the
VI
imm
edia
tely
, bef
ore
the
VI f
inis
hes
the
curr
ent i
tera
tion
. Abo
rtin
g a
VI
that
use
s ex
tern
al re
sour
ces,
suc
h as
ext
erna
l har
dwar
e, m
ight
leav
e th
e re
sour
ces
in a
n un
know
n st
ate
by n
ot r
eset
ting
or
rele
asin
g th
em
prop
erly
. Des
ign
the
VIs
you
cre
ate
with
a s
top
butto
n to
avo
id th
is
prob
lem
.
Mod
ifyin
g a
Sign
alC
ompl
ete
the
foll
owin
g st
eps
to s
cale
the
sign
al b
y 10
and
dis
play
the
resu
lts in
the
fron
t pan
el g
raph
.
1.In
the
bloc
k di
agra
m, u
se th
e Po
siti
onin
g to
ol to
clic
k th
e w
ire
that
co
nnec
ts th
e Si
mul
ate
Sign
al E
xpre
ss V
I to
the
Wav
efor
m G
raph
te
rmin
al, s
how
n at
left
.
2.Pr
ess
the
<D
elet
e> k
ey to
del
ete
this
wir
e.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Getti
ng S
tarte
d w
ith L
abVI
EW1-
12ni
.com
3.If
the
Fun
ctio
ns p
alet
te, s
how
n in
Fig
ure
1-6,
is n
ot v
isib
le, s
elec
t V
iew
»Fun
ctio
ns P
alet
te to
dis
play
it. T
he F
unct
ions
pal
ette
ope
ns
wit
h th
e E
xpre
ss p
alet
te v
isib
le b
y de
faul
t. If
you
hav
e se
lect
ed
anot
her
pale
tte, y
ou c
an r
etur
n to
the
Exp
ress
pal
ette
by
clic
king
E
xpre
ss o
n th
e F
unct
ions
pal
ette
.
Figu
re 1
-6.
Func
tions
Pal
ette
4.O
n th
e A
rith
met
ic &
Com
pari
son
pale
tte,
sel
ect t
he F
orm
ula
Exp
ress
V
I, s
how
n at
left
, and
pla
ce it
on
the
bloc
k di
agra
m b
etw
een
the
Sim
ulat
e Si
gnal
Exp
ress
VI
and
the
Wav
efor
m G
raph
term
inal
. You
ca
n m
ove
the
Wav
efor
m G
raph
term
inal
to th
e ri
ght t
o m
ake
mor
e ro
om b
etw
een
the
Exp
ress
VI
and
the
term
inal
.
The
Con
figu
re F
orm
ula
dial
og b
ox a
ppea
rs w
hen
you
plac
e th
e E
xpre
ss V
I on
the
bloc
k di
agra
m. W
hen
you
plac
e an
Exp
ress
VI
on
the
bloc
k di
agra
m, t
he c
onfi
gura
tion
dial
og b
ox f
or th
at V
I al
way
s ap
pear
s au
tom
atic
ally
.
Note
If y
ou p
lace
an
obje
ct to
o cl
ose
to a
noth
er o
bjec
t on
the
bloc
k di
agra
m, a
uto
wir
ing
mig
ht w
ire
the
two
obje
cts
toge
ther
. Del
ete
the
wir
es if
the
auto
mat
ic w
irin
g is
wro
ng. T
o co
nfig
ure
auto
wir
ing
sele
ct T
ools
»Opt
ions
then
sel
ect B
lock
Dia
gram
fro
m th
e C
ateg
ory
list
. Rem
ove
the
chec
kmar
k fr
om th
e E
nabl
e au
to w
irin
g ch
eckb
ox to
turn
off
au
to w
irin
g.
5.C
lick
the
Hel
p bu
tton,
sho
wn
at le
ft, i
n th
e bo
ttom
rig
ht c
orne
r of
the
Con
figu
re F
orm
ula
dial
og b
ox to
dis
play
the
Lab
VIE
W H
elp
topi
c fo
r th
is E
xpre
ss V
I.
The
For
mul
a he
lp to
pic
desc
ribe
s th
e E
xpre
ss V
I, th
e co
nfig
urat
ion
dial
og b
ox o
ptio
ns, a
nd th
e in
puts
and
out
puts
of t
he E
xpre
ss V
I. E
ach
Exp
ress
VI
has
a co
rres
pond
ing
help
topi
c yo
u ca
n ac
cess
by
clic
king
th
e H
elp
butto
n in
the
conf
igur
atio
n di
alog
box
or b
y ri
ght-
clic
king
the
Exp
ress
VI
and
sele
ctin
g H
elp
from
the
shor
tcut
men
u.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
13Ge
tting
Sta
rted
with
Lab
VIEW
6.In
the
For
mul
a to
pic,
fin
d th
e di
alog
box
opt
ion
who
se d
escr
iptio
n in
dica
tes
that
it e
nter
s a
vari
able
into
the
form
ula.
7.M
inim
ize
the
Lab
VIE
W H
elp
to r
etur
n to
the
Con
figu
re F
orm
ula
dial
og b
ox.
8.C
hang
e th
e te
xt in
the
Lab
el c
olum
n of
the
dial
og b
ox o
ptio
n yo
u re
ad
abou
t, sh
own
at le
ft, f
rom
X1
to Sawtooth
to in
dica
te th
e in
put v
alue
to
the
Form
ula
Exp
ress
VI.
Whe
n yo
u cl
ick
in th
e F
orm
ula
text
box
at
the
top
of th
e C
onfi
gure
For
mul
a di
alog
box
, the
text
cha
nges
to
mat
ch th
e la
bel y
ou e
nter
ed.
9.D
efin
e th
e va
lue
of th
e sc
alin
g fa
ctor
by
ente
ring
*10
aft
er S
awto
oth
in th
e F
orm
ula
text
box
.
You
can
use
the
Inpu
t bu
ttons
in th
e co
nfig
urat
ion
dial
og b
ox o
r yo
u ca
n us
e th
e *
, 1, a
nd 0
key
boar
d bu
ttons
to e
nter
the
scal
ing
fact
or. I
f yo
u us
e th
e In
put
butto
ns in
the
conf
igur
atio
n di
alog
box
, Lab
VIE
W
plac
es th
e fo
rmul
a in
put a
fter
the
Saw
toot
h in
put i
n th
e F
orm
ula
text
bo
x. I
f yo
u us
e th
e ke
yboa
rd, c
lick
in th
e F
orm
ula
text
box
aft
er
Saw
toot
h an
d en
ter
the
form
ula
you
wan
t to
appe
ar in
the
text
box
. T
he C
onfi
gure
For
mul
a di
alog
box
sho
uld
appe
ar s
imil
ar to
Fi
gure
1-7.
Figu
re 1
-7.
Conf
igur
e Fo
rmul
a Di
alog
Box
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Getti
ng S
tarte
d w
ith L
abVI
EW1-
14ni
.com
Note
If y
ou e
nter
an
inva
lid f
orm
ula
in th
e F
orm
ula
text
box
, the
Err
ors
LE
D in
the
uppe
r ri
ght c
orne
r tu
rns
from
gre
en to
gra
y an
d di
spla
ys th
e te
xt Invalid Formula
.
10.
Cli
ck th
e O
K b
utto
n to
sav
e th
e cu
rren
t con
figu
rati
on a
nd c
lose
the
Con
figu
re F
orm
ula
dial
og b
ox.
11.
Mov
e th
e cu
rsor
ove
r th
e ar
row
on
the
Saw
toot
h ou
tput
of
the
Sim
ulat
e Si
gnal
Exp
ress
VI.
12.
Whe
n th
e W
irin
g to
ol a
ppea
rs, c
lick
the
arro
w o
n th
e Sa
wto
oth
outp
ut
and
then
cli
ck th
e ar
row
on
the
Saw
toot
h in
put o
f the
For
mul
a E
xpre
ss
VI,
sho
wn
at le
ft, t
o w
ire
the
two
obje
cts
toge
ther
.
13.
Use
the
Wir
ing
tool
to w
ire
the
Res
ult o
utpu
t of
the
Form
ula
Exp
ress
V
I to
the
Wav
efor
m G
raph
term
inal
.
Exa
min
e th
e w
ires
con
nect
ing
the
Exp
ress
VIs
and
term
inal
s. T
he
arro
ws
on th
e E
xpre
ss V
Is a
nd te
rmin
als
indi
cate
the
dire
ctio
n th
at th
e da
ta fl
ows
alon
g th
ese
wir
es. T
he b
lock
dia
gram
sho
uld
appe
ar s
imil
ar
to F
igur
e1-
8. U
se th
e bl
ock
diag
ram
fig
ures
as
a re
fere
nce.
The
ar
rang
emen
t of o
bjec
ts o
n yo
ur b
lock
dia
gram
doe
s no
t nee
d to
mat
ch
the
figu
re e
xact
ly.
Figu
re 1
-8.
Bloc
k Di
agra
m o
f the
Acq
uirin
g a
Sign
al V
I
Tip
You
can
rig
ht-c
lick
any
wir
e an
d se
lect
Cle
an U
p W
ire
from
the
shor
tcut
men
u to
ha
ve L
abV
IEW
aut
omat
ical
ly fi
nd a
rout
e fo
r the
wir
e ar
ound
exi
stin
g ob
ject
s on
the
bloc
k di
agra
m. L
abV
IEW
als
o ro
utes
a w
ire
to d
ecre
ase
the
num
ber
of b
ends
in th
e w
ire.
You
al
so c
an c
lick
the
Cle
an U
p D
iagr
am b
utto
n on
the
bloc
k di
agra
m to
olba
r to
hav
e L
abV
IEW
aut
omat
ical
ly r
erou
te a
ll e
xist
ing
wir
es a
nd r
earr
ange
obj
ects
on
the
bloc
k di
agra
m to
gen
erat
e a
clea
ner
look
.
14.
Pre
ss th
e <
Ctr
l-S
> k
eys
or s
elec
t File
»Sav
e to
sav
e th
e V
I.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
15Ge
tting
Sta
rted
with
Lab
VIEW
Disp
layi
ng T
wo
Sign
als
on a
Gra
phT
o co
mpa
re th
e si
gnal
gen
erat
ed b
y th
e Si
mul
ate
Sign
al E
xpre
ss V
I and
the
sign
al m
odif
ied
by th
e Fo
rmul
a E
xpre
ss V
I on
the
sam
e gr
aph,
use
the
Mer
ge S
igna
ls f
unct
ion.
Com
plet
e th
e fo
llow
ing
step
s to
dis
play
two
sign
als
on th
e sa
me
grap
h.
1.In
the
bloc
k di
agra
m, m
ove
the
curs
or o
ver t
he a
rrow
on
the
Saw
toot
h ou
tput
of
the
Sim
ulat
e Si
gnal
Exp
ress
VI.
2.U
se th
e W
irin
g to
ol to
wir
e th
e Sa
wto
oth
outp
ut to
the
Wav
efor
m
Gra
ph te
rmin
al.
The
Mer
ge S
igna
ls f
unct
ion,
sho
wn
at le
ft, a
ppea
rs w
here
the
two
wir
es c
onne
ct. A
fun
ctio
n is
a b
uilt
-in
exec
utio
n el
emen
t, co
mpa
rabl
e to
an
oper
ator
, fun
ctio
n, o
r st
atem
ent i
n a
text
-bas
ed
prog
ram
min
g la
ngua
ge. T
he M
erge
Sig
nals
fun
ctio
n ta
kes
the
two
sepa
rate
sig
nals
and
com
bine
s th
em s
o th
at b
oth
can
disp
lay
on th
e sa
me
grap
h.
The
bloc
k di
agra
m s
houl
d ap
pear
sim
ilar
to F
igur
e1-
9.
Figu
re 1
-9.
Bloc
k Di
agra
m S
how
ing
the
Mer
ge S
igna
ls F
unct
ion
3.P
ress
the
<C
trl-
S>
key
s or
sel
ect F
ile»S
ave
to s
ave
the
VI.
4.R
etur
n to
the
fron
t pan
el, r
un th
e V
I, a
nd tu
rn th
e kn
ob c
ontr
ol.
The
gra
ph p
lots
the
orig
inal
saw
toot
h w
ave
and
the
scal
ed s
awto
oth
wav
e w
ith
10 ti
mes
the
ampl
itud
e, a
s yo
u sp
ecif
ied
in th
e Fo
rmul
a E
xpre
ss V
I. T
he m
axim
um v
alue
on
the
y-ax
is a
utom
atic
ally
sca
les
as
you
turn
the
knob
.
5.C
lick
the
STO
P b
utto
n to
sto
p th
e V
I.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Getti
ng S
tarte
d w
ith L
abVI
EW1-
16ni
.com
Cust
omiz
ing
a Kn
ob C
ontro
lT
he k
nob
cont
rol c
hang
es th
e am
plit
ude
of th
e sa
wto
oth
wav
e, s
o la
beli
ng
it A
mpl
itud
e ac
cura
tely
des
crib
es th
e be
havi
or o
f th
e kn
ob.
Com
plet
e th
e fo
llow
ing
step
s to
cus
tom
ize
the
appe
aran
ce o
f th
e kn
ob.
1.R
ight
-cli
ck th
e fr
ont p
anel
kno
b an
d se
lect
Pro
pert
ies
from
the
shor
tcut
men
u to
dis
play
the
Kno
b P
rope
rtie
s di
alog
box
. Clic
k th
e A
ppea
ranc
e ta
b to
dis
play
the
App
eara
nce
page
.
2.In
the
Lab
el s
ectio
n on
the
App
eara
nce
page
, del
ete
the
labe
l Knob
, an
d en
ter Amplitude
in th
e te
xt b
ox.
The
Kno
b P
rope
rtie
s di
alog
box
sho
uld
appe
ar s
imila
r to
Figu
re1-
10.
Figu
re 1
-10.
Kno
b Pr
oper
ties
Dial
og B
ox
3.C
lick
the
Scal
e ta
b. I
n th
e Sc
ale
Styl
e se
ctio
n, p
lace
a c
heck
mar
k in
th
e Sh
ow c
olor
ram
p ch
eckb
ox.
The
kno
b in
the
fron
t pan
el w
indo
w u
pdat
es to
ref
lect
thes
e ch
ange
s.
4.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se th
e K
nob
Pro
pert
ies
dial
og b
ox.
5.Sa
ve th
e V
I.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
17Ge
tting
Sta
rted
with
Lab
VIEW
6.R
eope
n th
e K
nob
Pro
pert
ies
dial
og b
ox a
nd e
xper
imen
t with
oth
er
prop
erti
es o
f th
e kn
ob. F
or e
xam
ple,
on
the
Scal
e pa
ge, t
ry c
hang
ing
the
colo
rs f
or th
e M
arke
r te
xt c
olor
by
clic
king
the
colo
r bo
x.
7.C
lick
the
Can
cel b
utto
n to
avo
id a
pply
ing
any
chan
ges
you
mad
e w
hile
exp
erim
enti
ng. I
f you
wan
t to
keep
the
chan
ges
you
mad
e, c
lick
the
OK
but
ton.
Cust
omiz
ing
a W
avef
orm
Gra
phT
he w
avef
orm
gra
ph in
dica
tor
disp
lays
the
two
sign
als.
To
indi
cate
whi
ch
plot
is th
e sc
aled
sig
nal a
nd w
hich
is th
e si
mul
ated
sig
nal,
you
can
cust
omiz
e th
e pl
ots.
Com
plet
e th
e fo
llow
ing
step
s to
cus
tom
ize
the
appe
aran
ce o
f the
wav
efor
m
grap
h in
dica
tor.
1.In
the
fron
t pan
el w
indo
w, m
ove
the
curs
or o
ver
the
top
of th
e pl
ot
lege
nd o
n th
e w
avef
orm
gra
ph.
Tho
ugh
the
grap
h ha
s tw
o pl
ots,
the
plot
lege
nd d
ispl
ays
only
one
plo
t.
2.W
hen
a do
uble
-hea
ded
arro
w a
ppea
rs, s
how
n in
Fig
ure
1-11
, clic
k an
d dr
ag th
e bo
rder
of t
he p
lot l
egen
d to
add
one
item
to th
e le
gend
. Whe
n yo
u re
leas
e th
e m
ouse
but
ton,
the
seco
nd p
lot n
ame
appe
ars.
Figu
re 1
-11.
Exp
andi
ng a
Plo
t Leg
end
3.R
ight
-cli
ck th
e w
avef
orm
gra
ph a
nd s
elec
t Pro
pert
ies
from
the
shor
tcut
men
u to
dis
play
the
Gra
ph P
rope
rtie
s di
alog
box
.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Getti
ng S
tarte
d w
ith L
abVI
EW1-
18ni
.com
4.O
n th
e P
lots
pag
e, s
elec
t Saw
toot
h fr
om th
e to
p pu
ll-do
wn
men
u. I
n th
e C
olor
s se
ctio
n, c
lick
the
Lin
e co
lor b
ox to
dis
play
the
colo
r pic
ker.
Sel
ect a
new
line
col
or.
5.Se
lect
Saw
toot
h (F
orm
ula
Res
ult)
fro
m th
e to
p pu
ll-do
wn
men
u.
6.Pl
ace
a ch
eckm
ark
in th
e D
o no
t use
wav
efor
m n
ames
for
plot
nam
es
chec
kbox
. Thi
s ac
tion
lets
you
edi
t the
labe
ls o
n th
e gr
aph.
7.In
the
Nam
e te
xt b
ox, d
elet
e th
e cu
rren
t lab
el a
nd c
hang
e th
e na
me
of
this
plo
t to Scaled Sawtooth
.
8.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se th
e G
raph
Pro
pert
ies
dial
og b
ox.
The
plo
t col
or a
nd p
lot l
egen
d ch
ange
.
9.R
eope
n th
e G
raph
Pro
pert
ies
dial
og b
ox a
nd e
xper
imen
t with
oth
er
prop
erti
es o
f the
gra
ph. F
or e
xam
ple,
on
the
Scal
es p
age,
try
disa
blin
g au
tom
atic
sca
ling
and
cha
ngin
g th
e m
inim
um a
nd m
axim
um v
alue
of
the
y-ax
is.
10.
Cli
ck th
e C
ance
l but
ton
to a
void
app
lyin
g an
y ch
ange
s yo
u m
ade
whi
le e
xper
imen
ting
. If y
ou w
ant t
o ke
ep th
e ch
ange
s yo
u m
ade,
cli
ck
the
OK
but
ton.
11.
Save
and
clo
se th
e V
I.
Sum
mar
yT
he f
ollo
win
g to
pics
are
a s
umm
ary
of th
e m
ain
conc
epts
you
lear
ned
in
this
cha
pter
.
New
Dia
log
Box
and
Tem
plat
e VI
sT
he N
ew d
ialo
g bo
x co
ntai
ns m
any
tem
plat
e V
Is, i
nclu
ding
the
ones
use
d in
this
man
ual.
The
tem
plat
e V
Is h
elp
you
star
t bui
ldin
g V
Is f
or c
omm
on
mea
sure
men
ts a
nd o
ther
task
s. T
he te
mpl
ate
VIs
incl
ude
the
Exp
ress
VIs
, fu
nctio
ns, a
nd fr
ont p
anel
obj
ects
you
nee
d to
get
sta
rted
bui
ldin
g co
mm
on
mea
sure
men
t app
lica
tion
s.
Use
one
of
the
foll
owin
g m
etho
ds to
acc
ess
the
New
dia
log
box:
•C
lick
the
New
, VI
from
Tem
plat
e, o
r M
ore
link
s in
the
Get
ting
St
arte
d w
indo
w a
fter
you
laun
ch L
abV
IEW
.
•Se
lect
File
»New
fro
m th
e m
enu
bar
of th
e G
etti
ng S
tart
ed w
indo
w,
the
fron
t pan
el, o
r th
e bl
ock
diag
ram
.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
19Ge
tting
Sta
rted
with
Lab
VIEW
Fron
t Pan
elT
he f
ront
pan
el is
the
user
inte
rfac
e of
a V
I. Y
ou b
uild
the
fron
t pan
el b
y us
ing
cont
rols
and
indi
cato
rs, w
hich
are
the
inte
ract
ive
inpu
t and
out
put
term
inal
s of
the
VI,
resp
ecti
vely
. Con
trol
s an
d in
dica
tors
are
loca
ted
on th
e C
ontr
ols
pale
tte.
Con
trol
s ar
e kn
obs,
pus
h bu
tton
s, d
ials
, and
oth
er in
put m
echa
nism
s.
Con
trol
s si
mul
ate
inst
rum
ent i
nput
mec
hani
sms
and
supp
ly d
ata
to th
e bl
ock
diag
ram
of
the
VI.
Indi
cato
rs a
re g
raph
s, L
ED
s, a
nd o
ther
dis
play
s. I
ndic
ator
s si
mul
ate
inst
rum
ent o
utpu
t mec
hani
sms
and
disp
lay
data
the
bloc
k di
agra
m a
cqui
res
or g
ener
ates
.
Bloc
k Di
agra
mT
he b
lock
dia
gram
con
tain
s th
e gr
aphi
cal s
ourc
e co
de, a
lso
know
n as
G
code
or
bloc
k di
agra
m c
ode,
for
how
the
VI
runs
. The
blo
ck d
iagr
am
code
use
s gr
aphi
cal r
epre
sent
atio
ns o
f fu
ncti
ons
to c
ontr
ol th
e fr
ont p
anel
ob
ject
s. F
ront
pan
el o
bjec
ts a
ppea
r as
icon
term
inal
s on
the
bloc
k di
agra
m.
Wir
es c
onne
ct c
ontr
ol a
nd in
dica
tor
term
inal
s to
Exp
ress
VIs
, VIs
, and
fu
nctio
ns. D
ata
flow
s th
roug
h th
e w
ires
in th
e fo
llow
ing
way
s: f
rom
co
ntro
ls to
VIs
and
fun
ctio
ns, f
rom
VIs
and
fun
ctio
ns to
indi
cato
rs, a
nd
from
VIs
and
fun
ctio
ns to
oth
er V
Is a
nd f
unct
ions
. The
mov
emen
t of
data
th
roug
h th
e no
des
on th
e bl
ock
diag
ram
det
erm
ines
the
exec
utio
n or
der
of
the
VIs
and
fun
ctio
ns. T
his
mov
emen
t of
data
is k
now
n as
dat
aflo
w
prog
ram
min
g.
Fron
t Pan
el a
nd B
lock
Dia
gram
Too
lsT
he P
osit
ioni
ng to
ol a
ppea
rs w
hen
you
mov
e th
e cu
rsor
ove
r an
obj
ect i
n th
e fr
ont p
anel
win
dow
or
on th
e bl
ock
diag
ram
. The
cur
sor
beco
mes
an
arro
w th
at y
ou c
an u
se to
sel
ect,
posi
tion
, and
res
ize
obje
cts.
The
Wir
ing
tool
app
ears
whe
n yo
u m
ove
the
curs
or o
ver
a te
rmin
al o
f a
bloc
k di
agra
m
obje
ct. T
he c
urso
r be
com
es a
spo
ol th
at y
ou c
an u
se to
con
nect
obj
ects
on
the
bloc
k di
agra
m th
roug
h w
hich
you
wan
t dat
a to
flo
w.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
Getti
ng S
tarte
d w
ith L
abVI
EW1-
20ni
.com
Runn
ing
and
Stop
ping
a V
IR
unni
ng a
VI e
xecu
tes
the
solu
tion
of t
he V
I. C
lick
the
Run
but
ton
or p
ress
th
e <
Ctr
l-R
> k
eys
to ru
n a
VI.
The
Run
but
ton
chan
ges
to a
dar
kene
d ar
row
to
indi
cate
the
VI
is r
unni
ng. Y
ou c
an s
top
a V
I im
med
iate
ly b
y cl
icki
ng
the
Abo
rt E
xecu
tion
but
ton.
How
ever
, abo
rtin
g a
VI
that
use
s ex
tern
al
reso
urce
s m
ight
leav
e th
e re
sour
ces
in a
n un
know
n st
ate.
Des
ign
the
VIs
yo
u cr
eate
with
a s
top
butto
n to
avo
id th
is p
robl
em. A
sto
p bu
tton
stop
s a
VI
afte
r th
e V
I co
mpl
etes
its
curr
ent i
tera
tion
.
Expr
ess
VIs
Use
Exp
ress
VIs
loca
ted
on th
e F
unct
ions
pal
ette
for
com
mon
m
easu
rem
ent t
asks
. Whe
n yo
u pl
ace
an E
xpre
ss V
I on
the
bloc
k di
agra
m,
the
dial
og b
ox y
ou u
se to
con
figu
re th
at E
xpre
ss V
I app
ears
by
defa
ult.
Set
the
opti
ons
in th
is c
onfi
gura
tion
dia
log
box
to s
peci
fy h
ow th
e E
xpre
ss V
I be
have
s. Y
ou a
lso
can
doub
le-c
lick
an
Exp
ress
VI
or r
ight
-cli
ck a
n E
xpre
ssV
I an
d se
lect
Pro
pert
ies
from
the
shor
tcut
men
u to
dis
play
the
conf
igur
atio
n di
alog
box
. If
you
wir
e da
ta to
an
Exp
ress
VI
and
run
it, th
e E
xpre
ss V
I di
spla
ys r
eal d
ata
in th
e co
nfig
urat
ion
dial
og b
ox. I
f yo
u cl
ose
and
reop
en th
e E
xpre
ss V
I, th
e V
I dis
play
s sa
mpl
e da
ta in
the
conf
igur
atio
n di
alog
box
unt
il yo
u ru
n th
e V
I ag
ain.
Exp
ress
VIs
app
ear
on th
e bl
ock
diag
ram
as
expa
ndab
le n
odes
with
icon
s su
rrou
nded
by
a bl
ue f
ield
. You
can
res
ize
an E
xpre
ss V
I to
dis
play
its
inpu
ts a
nd o
utpu
ts. T
he in
puts
and
out
puts
you
can
dis
play
for t
he E
xpre
ss
VI
depe
nd o
n ho
w y
ou c
onfi
gure
the
VI.
LabV
IEW
Doc
umen
tatio
n Re
sour
ces
The
Lab
VIE
W H
elp
cont
ains
info
rmat
ion
abou
t Lab
VIE
W p
rogr
amm
ing
conc
epts
, ste
p-by
-ste
p in
stru
ctio
ns f
or u
sing
Lab
VIE
W, a
nd r
efer
ence
in
form
atio
n ab
out L
abV
IEW
VIs
, fun
ctio
ns, p
alet
tes,
men
us, t
ools
, pr
oper
ties
, met
hods
, eve
nts,
dia
log
boxe
s, a
nd s
o on
. The
Lab
VIE
W H
elp
also
list
s th
e L
abV
IEW
doc
umen
tati
on r
esou
rces
ava
ilab
le f
rom
Nat
iona
l In
stru
men
ts. T
o ac
cess
hel
p in
form
atio
n fo
r E
xpre
ss V
Is, c
lick
the
Hel
p bu
tton
in th
e co
nfig
urat
ion
dial
og b
ox w
hile
you
con
figu
re a
n E
xpre
ss V
I.
You
als
o ca
n ac
cess
the
Lab
VIE
W H
elp
by r
ight
-clic
king
a V
I or
fun
ctio
n on
the
bloc
k di
agra
m o
r on
a p
inne
d pa
lett
e an
d se
lect
ing
Hel
p fr
om th
e sh
ortc
ut m
enu
or b
y se
lect
ing
Hel
p»L
abV
IEW
Hel
p.
Chap
ter 1
Getti
ng S
tarte
d w
ith L
abVI
EW V
irtua
l Ins
trum
ents
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n1-
21Ge
tting
Sta
rted
with
Lab
VIEW
Aft
er y
ou in
stal
l a L
abV
IEW
add
-on
such
as
a to
olki
t, m
odul
e, o
r dr
iver
, th
e do
cum
enta
tion
for t
hat a
dd-o
n ap
pear
s in
the
Lab
VIE
W H
elp
or a
ppea
rs
in a
sep
arat
e he
lp s
yste
m y
ou a
cces
s by
sel
ectin
g H
elp»
Add
-On
Hel
p,
whe
re A
dd-O
n H
elp
is th
e na
me
of th
e se
para
te h
elp
syst
em f
or th
e ad
d-on
.
Prop
erty
Dia
log
Boxe
sU
se p
rope
rty
dial
og b
oxes
or s
hort
cut m
enus
to c
onfi
gure
how
con
trol
s an
d in
dica
tors
app
ear o
r beh
ave
in th
e fr
ont p
anel
win
dow
. Rig
ht-c
lick
a c
ontr
ol
or in
dica
tor
on th
e fr
ont p
anel
and
sel
ect P
rope
rtie
s fr
om th
e sh
ortc
ut
men
u to
acc
ess
the
prop
erty
dia
log
box
for
that
obj
ect.
You
can
not a
cces
s pr
oper
ty d
ialo
g bo
xes
for
a co
ntro
l or
indi
cato
r w
hen
a V
I is
run
ning
.
Shor
tcut
sT
his
chap
ter
intr
oduc
ed th
e fo
llow
ing
keyb
oard
sho
rtcu
ts.
Note
The
<C
trl>
key
in s
hort
cuts
cor
resp
onds
to th
e (M
ac O
S X)
<O
ptio
n> o
r <C
omm
and>
ke
y or
(Lin
ux) <
Alt>
key
.
Shor
tcut
Fun
ctio
n
<C
trl-
R>
Run
s a
VI.
<C
trl-
Z>
Und
oes
the
last
act
ion.
<C
trl-
E>
Swit
ches
bet
wee
n th
e bl
ock
diag
ram
and
the
fron
t pa
nel w
indo
w.
<C
trl-
S>S
aves
a V
I.
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n2-
1Ge
tting
Sta
rted
with
Lab
VIEW2
Cust
omiz
ing
a VI
You
can
cho
ose
one
of m
any
Lab
VIE
W te
mpl
ate
VIs
to u
se a
s a
star
ting
po
int w
hen
buil
ding
VIs
. How
ever
, som
etim
es y
ou n
eed
to b
uild
a V
I fo
r w
hich
a te
mpl
ate
is n
ot a
vaila
ble.
Thi
s ch
apte
r te
ache
s yo
u ho
w to
bui
ld
and
cust
omiz
e a
VI
with
out u
sing
a te
mpl
ate.
Build
ing
a VI
from
a B
lank
VI
In th
e fo
llow
ing
exer
cise
s, y
ou w
ill o
pen
a bl
ank
VI a
nd a
dd s
truc
ture
s an
d E
xpre
ss V
Is to
the
bloc
k di
agra
m to
bui
ld a
new
VI.
You
will
bui
ld a
VI
that
gen
erat
es a
sig
nal,
redu
ces
the
num
ber
of s
ampl
es in
the
sign
al, a
nd
disp
lays
the
resu
ltin
g da
ta in
a f
ront
pan
el ta
ble.
Aft
er y
ou c
ompl
ete
the
exer
cise
s, th
e fr
ont p
anel
of
the
VI
will
look
sim
ilar
to th
e fr
ont p
anel
in
Figu
re2-
1.
You
can
com
plet
e th
e ex
erci
ses
in th
is c
hapt
er in
app
roxi
mat
ely
45 m
inut
es.
Figu
re 2
-1.
Fron
t Pan
el o
f the
Red
uce
Sam
ples
VI
Chap
ter 2
Cust
omizi
ng a
VI
Getti
ng S
tarte
d w
ith L
abVI
EW2-
2ni
.com
Open
ing
a Bl
ank
VIIf
no
tem
plat
e is
ava
ilabl
e fo
r th
e V
I yo
u w
ant t
o bu
ild, y
ou c
an s
tart
with
a
blan
k V
I an
d ad
d E
xpre
ss V
Is to
acc
ompl
ish
a sp
ecif
ic ta
sk.
Com
plet
e th
e fo
llow
ing
step
s to
ope
n a
blan
k V
I.
1.In
the
Get
ting
Sta
rted
win
dow
, cli
ck th
e B
lank
VI
link
in th
e N
ew
sect
ion
or p
ress
the
<C
trl-
N>
key
s to
ope
n a
blan
k V
I.
A b
lank
fro
nt p
anel
win
dow
and
blo
ck d
iagr
am w
indo
w a
ppea
r.
Note
You
als
o ca
n op
en a
bla
nk V
I by
sel
ecti
ng F
ile»N
ew V
I or
by
sele
ctin
g F
ile»N
ew
and
sele
ctin
g B
lank
VI
from
the
Cre
ate
New
list
.
2.D
ispl
ay th
e bl
ock
diag
ram
.
3.If
the
Fun
ctio
ns p
alet
te is
not
vis
ible
, rig
ht-c
lick
any
blan
k sp
ace
on
the
bloc
k di
agra
m to
dis
play
a te
mpo
rary
ver
sion
of
the
Fun
ctio
ns
pale
tte.
Cli
ck th
e th
umbt
ack,
sho
wn
at le
ft, i
n th
e up
per
left
cor
ner
of
the
Fun
ctio
ns p
alet
te to
pin
the
pale
tte s
o it
is n
o lo
nger
tem
pora
ry.
Addi
ng a
n Ex
pres
s VI
Tha
t Sim
ulat
es a
Sig
nal
Com
plet
e th
e fo
llow
ing
step
s to
fin
d th
e E
xpre
ss V
I yo
u w
ant t
o us
e an
d ad
d it
to th
e bl
ock
diag
ram
.
1.Se
lect
Hel
p»Sh
ow C
onte
xt H
elp
from
the
fron
t pan
el o
r th
e bl
ock
diag
ram
to d
ispl
ay th
e C
onte
xt H
elp
win
dow
, sho
wn
in F
igur
e2-
2.
You
als
o ca
n cl
ick
the
Show
Con
text
Hel
p W
indo
w b
utto
n, s
how
n at
le
ft, o
n th
e fr
ont p
anel
or b
lock
dia
gram
tool
bar t
o di
spla
y th
e C
onte
xt
Hel
p w
indo
w.
Figu
re 2
-2.
Cont
ext H
elp
Win
dow
Tip
You
als
o ca
n pr
ess
the
<C
trl-
H>
key
s to
dis
play
the
Con
text
Hel
p w
indo
w.
(Mac
OS)P
ress
the
<C
omm
and-
Shif
t-H
> k
eys.
Chap
ter 2
Cust
omizi
ng a
VI
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n2-
3Ge
tting
Sta
rted
with
Lab
VIEW
2.O
n th
e F
unct
ions
pal
ette
, sel
ect t
he E
xpre
ss»I
nput
pal
ette
and
mov
e th
e cu
rsor
ove
r on
e of
the
Exp
ress
VIs
on
the
Inpu
t pa
lett
e.
Whe
n yo
u m
ove
the
curs
or o
ver
a V
I, th
e C
onte
xt H
elp
win
dow
di
spla
ys in
form
atio
n ab
out t
hat V
I.
3.U
se th
e in
form
atio
n th
at a
ppea
rs in
the
Con
text
Hel
p w
indo
w to
find
th
e E
xpre
ss V
I th
at c
an s
imul
ate
a si
ne w
ave
sign
al.
Kee
p th
e C
onte
xt H
elp
win
dow
ope
n. T
he c
onte
xt h
elp
prov
ides
us
eful
info
rmat
ion
as y
ou c
ompl
ete
the
rest
of
this
exe
rcis
e.
4.Se
lect
the
Exp
ress
VI t
hat c
an s
imul
ate
a si
ne w
ave
sign
al a
nd p
lace
it
on th
e bl
ock
diag
ram
. The
Con
figu
re S
imul
ate
Sign
al d
ialo
g bo
x ap
pear
s.
5.M
ove
the
curs
or o
ver
the
vari
ous
optio
ns in
the
Con
figu
re S
imul
ate
Sign
al d
ialo
g bo
x, s
uch
as F
requ
ency
(Hz)
and
Am
plit
ude.
Rea
d th
e in
form
atio
n th
at a
ppea
rs in
the
Con
text
Hel
p w
indo
w.
6.C
onfi
gure
the
Sim
ulat
e S
igna
l Exp
ress
VI t
o ge
nera
te a
sin
e w
ave
wit
h a
freq
uenc
y of
10.
7 an
d am
plitu
de o
f 2.
The
sig
nal i
n th
e R
esul
t P
revi
ew w
indo
w c
hang
es to
ref
lect
the
conf
igur
ed s
ine
wav
e.
7.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se th
e C
onfi
gure
Sim
ulat
e Si
gnal
dia
log
box.
8.M
ove
the
curs
or o
ver
the
Sim
ulat
e Si
gnal
Exp
ress
VI
and
read
the
info
rmat
ion
that
app
ears
in th
e C
onte
xt H
elp
win
dow
.
The
Con
text
Hel
p w
indo
w d
ispl
ays
info
rmat
ion
abou
t how
you
co
nfig
ured
the
Sim
ulat
e Si
gnal
Exp
ress
VI
in a
dditi
on to
the
stan
dard
co
ntex
t hel
p de
scri
ptio
n.
9.Sa
ve th
e V
I as
Reduce Samples.vi
in a
n ea
sily
acc
essi
ble
loca
tion
.
Sear
chin
g th
e He
lp a
nd M
odify
ing
a Si
gnal
Com
plet
e th
e fo
llow
ing
step
s to
use
the
Lab
VIE
W H
elp
to s
earc
h fo
r th
e E
xpre
ss V
I th
at r
educ
es th
e nu
mbe
r of
sam
ples
in a
sig
nal.
1.O
n th
e bl
ock
diag
ram
, mov
e th
e cu
rsor
ove
r th
e Si
mul
ate
Sign
al
Exp
ress
VI
to d
ispl
ay th
e C
onte
xt H
elp
win
dow
and
cli
ck th
e D
etai
led
help
link
to d
ispl
ay th
e Si
mul
ate
Sign
al to
pic
in th
e L
abV
IEW
H
elp.
You
mig
ht h
ave
to e
nlar
ge o
r sc
roll
dow
n in
the
Con
text
Hel
p w
indo
w to
see
the
Det
aile
d he
lp li
nk.
You
als
o ca
n ac
cess
the
Lab
VIE
W H
elp
by r
ight
-cli
ckin
g a
VI
or
func
tion
on
the
bloc
k di
agra
m o
r on
a p
inne
d pa
lette
and
sel
ectin
g H
elp
from
the
shor
tcut
men
u or
by
sele
ctin
g H
elp»
Lab
VIE
W H
elp.
Chap
ter 2
Cust
omizi
ng a
VI
Getti
ng S
tarte
d w
ith L
abVI
EW2-
4ni
.com
2.C
lick
the
Sear
ch ta
b, e
nter
sample compression
in th
e T
ype
in th
e w
ord(
s) t
o se
arch
for
text
box
, and
pre
ss th
e <
Ent
er>
key
. You
can
pl
ace
quot
atio
n m
arks
aro
und
the
phra
se to
sea
rch
for t
he e
xact
phr
ase.
Fo
r ex
ampl
e, y
ou c
an e
nter
"sample compression"
to n
arro
w th
e se
arch
res
ults
.
Thi
s w
ord
choi
ce r
efle
cts
wha
t you
wan
t thi
s E
xpre
ss V
I to
do
—co
mpr
ess,
or
redu
ce, t
he n
umbe
r of
sam
ples
in a
sig
nal.
You
als
o ca
n cl
ick
the
Inde
x ta
b to
sea
rch
keyw
ords
and
con
cept
s.
3.D
oubl
e-cl
ick
the
Sam
ple
Com
pres
sion
topi
c in
the
sear
ch r
esul
ts to
di
spla
y th
e to
pic
that
des
crib
es th
e Sa
mpl
e C
ompr
essi
on E
xpre
ss V
I.
4.A
fter
you
rea
d th
e de
scri
ptio
n of
the
Exp
ress
VI,
clic
k th
e A
dd to
the
bloc
k di
agra
m b
utto
n to
pla
ce th
e E
xpre
ss V
I on
the
curs
or.
5.M
ove
the
curs
or to
the
bloc
k di
agra
m.
6.A
dd th
e S
ampl
e C
ompr
essi
on E
xpre
ss V
I to
the
bloc
k di
agra
m to
the
righ
t of
the
Sim
ulat
e Si
gnal
Exp
ress
VI.
Whe
n yo
u kn
ow w
hich
item
you
wan
t to
add
to th
e bl
ock
diag
ram
or
fron
t pan
el, y
ou c
an u
se th
e Q
uick
Dro
p di
alog
box
to q
uick
ly fi
nd th
e it
em a
nd a
dd it
to th
e bl
ock
diag
ram
or f
ront
pan
el. S
elec
t Qui
ck D
rop
from
the
Vie
w m
enu
to d
ispl
ay th
is d
ialo
g bo
x. Y
ou a
lso
can
pres
s th
e <
Ctr
l-Sp
ace>
key
s. (M
ac O
S X)
Pre
ss th
e <
Com
man
d-Sh
ift-
Spac
e>
keys
.
Tip
You
can
spe
ed u
p th
e in
itia
l lau
nch
of th
e Q
uick
Dro
p di
alog
box
by
enab
ling
the
Loa
d pa
lett
es d
urin
g la
unch
radi
o bu
tton
on th
e C
ontr
ols/
Fun
ctio
ns P
alet
te p
age
of th
e O
ptio
ns d
ialo
g bo
x. S
elec
ting
to lo
ad p
alet
tes
whi
le L
abV
IEW
laun
ches
mig
ht s
low
dow
n th
e la
unch
ing
of L
abV
IEW
slig
htly
.
7.C
onfi
gure
the
Sam
ple
Com
pres
sion
Exp
ress
VI t
o re
duce
the
sign
al b
y a
fact
or o
f 25
usi
ng th
e m
ean
of th
ese
valu
es.
8.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se th
e C
onfi
gure
Sam
ple
Com
pres
sion
dia
log
box.
9.U
se th
e W
irin
g to
ol to
wir
e th
e Si
ne o
utpu
t of
the
Sim
ulat
e Si
gnal
E
xpre
ss V
I to
the
Sign
als
inpu
t of
the
Sam
ple
Com
pres
sion
E
xpre
ssV
I.
Chap
ter 2
Cust
omizi
ng a
VI
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n2-
5Ge
tting
Sta
rted
with
Lab
VIEW
Cust
omiz
ing
a Us
er In
terfa
ce fr
om th
e Bl
ock
Diag
ram
In th
e pr
evio
us e
xerc
ises
, you
add
ed c
ontr
ols
and
indi
cato
rs to
the
fron
t pa
nel u
sing
the
Con
trol
s pa
lett
e. Y
ou a
lso
can
crea
te c
ontr
ols
and
indi
cato
rs f
rom
the
bloc
k di
agra
m.
Com
plet
e th
e fo
llow
ing
step
s to
cre
ate
cont
rols
and
indi
cato
rs f
rom
the
bloc
k di
agra
m.
1.O
n th
e bl
ock
diag
ram
, rig
ht-c
lick
the
Mea
n ou
tput
of
the
Sam
ple
Com
pres
sion
Exp
ress
VI a
nd s
elec
t Cre
ate»
Num
eric
Ind
icat
or fr
om
the
shor
tcut
men
u to
cre
ate
a nu
mer
ic in
dica
tor.
A M
ean
indi
cato
r,
show
n at
left
, app
ears
on
the
bloc
k di
agra
m.
2.R
ight
-clic
k th
e M
ean
outp
ut o
f th
e Sa
mpl
e C
ompr
essi
on E
xpre
ss V
I an
d se
lect
Ins
ert
Inpu
t/O
utpu
t fr
om th
e sh
ortc
ut m
enu
to in
sert
the
Ena
ble
inpu
t.
In p
revi
ous
exer
cise
s, y
ou le
arne
d to
add
inpu
ts a
nd o
utpu
ts b
y ex
pand
ing
the
Exp
ress
VI
usin
g th
e do
wn
arro
ws.
Usi
ng th
e sh
ortc
ut
men
u is
a d
iffe
rent
way
to d
ispl
ay a
nd s
elec
t the
inpu
ts a
nd o
utpu
ts o
f an
Exp
ress
VI.
3.R
ight
-clic
k th
e E
nabl
e in
put a
nd s
elec
t Cre
ate»
Con
trol
fro
m th
e sh
ortc
ut m
enu
to c
reat
e a
swit
ch. A
Boo
lean
con
trol
, sho
wn
at le
ft,
appe
ars
on th
e bl
ock
diag
ram
.
Con
trol
term
inal
s ha
ve a
thic
ker b
orde
r tha
n in
dica
tor t
erm
inal
s. A
lso,
an
arr
ow a
ppea
rs o
n th
e ri
ght o
f the
term
inal
if th
e te
rmin
al is
a c
ontr
ol,
and
an a
rrow
app
ears
on
the
left
of
the
term
inal
if th
e te
rmin
al is
an
indi
cato
r.
4.R
ight
-clic
k th
e w
ire
that
con
nect
s th
e Si
ne o
utpu
t of
the
Sim
ulat
e Si
gnal
Exp
ress
VI
to th
e Si
gnal
s in
put o
f th
e Sa
mpl
e C
ompr
essi
on
Exp
ress
VI
and
sele
ct C
reat
e»G
raph
Ind
icat
or f
rom
the
shor
tcut
m
enu.
5.U
se th
e W
irin
g to
ol to
wir
e th
e M
ean
outp
ut o
f th
e Sa
mpl
e C
ompr
essi
on E
xpre
ss V
I to
the
Sine
gra
ph in
dica
tor.
The
Mer
ge S
igna
ls f
unct
ion
appe
ars.
Chap
ter 2
Cust
omizi
ng a
VI
Getti
ng S
tarte
d w
ith L
abVI
EW2-
6ni
.com
6.A
rran
ge th
e ob
ject
s on
the
bloc
k di
agra
m s
o th
ey a
ppea
r si
mil
ar to
Fi
gure
2-3.
Figu
re 2
-3.
Bloc
k Di
agra
m o
f the
Red
uce
Sam
ples
VI
7.D
ispl
ay th
e fr
ont p
anel
.
The
con
trol
s an
d in
dica
tors
you
add
ed a
ppea
r in
the
fron
t pan
el w
ith
labe
ls th
at c
orre
spon
d to
the
inpu
ts a
nd o
utpu
ts f
rom
whi
ch y
ou
crea
ted
the
cont
rols
and
indi
cato
rs.
Note
You
mig
ht n
eed
to s
crol
l or
resi
ze th
e fr
ont p
anel
to s
ee a
ll co
ntro
ls a
nd in
dica
tors
.
8.Sa
ve th
e V
I.
Conf
igur
ing
a VI
to R
un C
ontin
uous
ly u
ntil
the
User
Sto
ps It
In th
e cu
rren
t sta
te, t
he V
I ru
ns o
nce,
gen
erat
es o
ne s
igna
l, an
d th
en s
tops
ru
nnin
g. T
o ru
n th
e V
I un
til a
con
diti
on o
ccur
s, y
ou c
an u
se a
Whi
le L
oop.
Com
plet
e th
e fo
llow
ing
step
s to
add
a W
hile
Loo
p to
the
bloc
k di
agra
m.
1.D
ispl
ay th
e fr
ont p
anel
and
run
the
VI.
The
VI
runs
onc
e an
d th
en s
tops
. The
fro
nt p
anel
doe
s no
t hav
e a
stop
bu
tton.
2.D
ispl
ay th
e bl
ock
diag
ram
.
3.C
lick
the
Sear
ch b
utto
n, s
how
n at
left
, on
the
Fun
ctio
ns p
alet
te, a
nd
ente
r While
in th
e te
xt b
ox. L
abV
IEW
sea
rche
s as
you
type
the
firs
t fe
w le
tters
and
dis
play
s an
y m
atch
es in
the
sear
ch r
esul
ts te
xt b
ox.
If th
ere
are
obje
cts
wit
h th
e sa
me
nam
e, u
se th
e in
form
atio
n in
the
brac
kets
to th
e ri
ght o
f ea
ch o
bjec
t nam
e to
dec
ide
whi
ch o
bjec
t to
sele
ct. S
ome
obje
cts
are
loca
ted
on m
ulti
ple
pale
ttes
bec
ause
you
can
us
e th
em f
or m
ulti
ple
appl
icat
ions
.
Chap
ter 2
Cust
omizi
ng a
VI
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n2-
7Ge
tting
Sta
rted
with
Lab
VIEW
4.D
oubl
e-cl
ick
Whi
le L
oop
<<E
xecu
tion
Con
trol
>> to
dis
play
the
Exe
cuti
on C
ontr
ol s
ubpa
lett
e an
d te
mpo
rari
ly h
ighl
ight
the
Whi
le
Loo
p on
the
subp
alet
te.
5.Se
lect
the
Whi
le L
oop
on th
e E
xecu
tion
Con
trol
pal
ette
.
6.M
ove
the
curs
or to
the
uppe
r le
ft c
orne
r of
the
bloc
k di
agra
m. C
lick
and
drag
the
curs
or d
iago
nall
y to
enc
lose
all
the
Exp
ress
VIs
and
w
ires
, as
show
n in
Fig
ure
2-4.
Figu
re 2
-4.
Plac
ing
the
Whi
le L
oop
arou
nd th
e Ex
pres
s VI
s
7.R
elea
se th
e m
ouse
to p
lace
the
Whi
le L
oop
arou
nd th
e E
xpre
ss V
Is a
nd
wir
es.
The
Whi
le L
oop,
sho
wn
at le
ft, a
ppea
rs w
ith
a ST
OP
but
ton
wir
ed to
th
e co
nditi
onal
term
inal
. Thi
s W
hile
Loo
p is
con
figu
red
to s
top
whe
n th
e us
er c
lick
s th
e ST
OP
but
ton.
8.D
ispl
ay th
e fr
ont p
anel
and
run
the
VI.
The
VI
now
run
s un
til y
ou c
lick
the
STO
P b
utto
n. A
Whi
le L
oop
exec
utes
the
VIs
and
fun
ctio
ns in
side
the
loop
unt
il th
e us
er c
licks
the
STO
P b
utto
n.
9.C
lick
the
STO
P b
utto
n an
d sa
ve th
e V
I.
Chap
ter 2
Cust
omizi
ng a
VI
Getti
ng S
tarte
d w
ith L
abVI
EW2-
8ni
.com
Usin
g th
e Er
ror L
ist W
indo
wIf
a V
I co
ntai
ns a
n in
dica
tor
you
do n
ot w
ant t
o us
e, y
ou c
an d
elet
e it.
Com
plet
e th
e fo
llow
ing
step
s to
rem
ove
the
Mea
n in
dica
tor f
rom
the
fron
t pa
nel.
1.D
ispl
ay th
e fr
ont p
anel
and
mov
e th
e cu
rsor
ove
r th
e M
ean
indi
cato
r un
til t
he P
osit
ioni
ng to
ol a
ppea
rs.
2.C
lick
the
Mea
n in
dica
tor,
sho
wn
at le
ft, t
o se
lect
it a
nd p
ress
the
<D
elet
e> k
ey.
3.D
ispl
ay th
e bl
ock
diag
ram
.
A w
ire
appe
ars
as a
das
hed
blac
k li
ne w
ith
a re
d X
in th
e m
iddl
e, s
how
n at
left
. The
das
hed
blac
k li
ne is
a b
roke
n w
ire.
The
Run
but
ton,
sho
wn
at le
ft, a
ppea
rs b
roke
n to
indi
cate
the
VI
cann
ot r
un.
4.C
lick
the
brok
en R
un b
utto
n to
dis
play
the
Err
or li
st w
indo
w.
The
Err
or li
st w
indo
w li
sts
all e
rror
s in
the
VI
and
prov
ides
det
ails
ab
out e
ach
erro
r. Y
ou c
an u
se th
e E
rror
list
win
dow
to lo
cate
err
ors.
5.In
the
erro
rs a
nd w
arni
ngs
list,
sele
ct th
e Wire: has loose ends
er
ror
and
clic
k th
e H
elp
butt
on to
dis
play
mor
e in
form
atio
n ab
out t
he
erro
r.
Tip
You
als
o ca
n m
ove
the
Wir
ing
tool
ove
r a
brok
en w
ire
to d
ispl
ay a
tip
stri
p th
at
desc
ribe
s w
hy th
e w
ire
is b
roke
n. T
his
info
rmat
ion
also
app
ears
in th
e C
onte
xt H
elp
win
dow
whe
n yo
u m
ove
the
Wir
ing
tool
ove
r a
brok
en w
ire.
6.In
the
erro
rs a
nd w
arni
ngs
list
, dou
ble-
clic
k th
e Wire: has loose
ends
err
or to
hig
hlig
ht th
e br
oken
wir
e.
7.Pr
ess
the
<C
trl-
B>
key
s to
del
ete
the
brok
en w
ire.
Pres
sing
the
<Ctr
l-B
> ke
ys d
elet
es a
ll b
roke
n w
ires
on
the
bloc
k di
agra
m.
You
can
pre
ss th
e <D
elet
e> k
ey to
del
ete
only
the
sele
cted
wir
e.
8.Se
lect
Vie
w»E
rror
Lis
t to
dis
play
the
Err
or li
st w
indo
w. N
o er
rors
ap
pear
in th
e er
rors
and
war
ning
s fi
eld.
Tip
You
als
o ca
n pr
ess
the
<C
trl-
L>
key
s to
dis
play
the
Err
or li
st w
indo
w.
9.C
lick
the
Clo
se b
utto
n to
clo
se th
e E
rror
list
win
dow
.
The
Run
but
ton
no lo
nger
app
ears
bro
ken.
Chap
ter 2
Cust
omizi
ng a
VI
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n2-
9Ge
tting
Sta
rted
with
Lab
VIEW
Cont
rolli
ng th
e Sp
eed
of E
xecu
tion
To
plot
the
poin
ts o
n th
e w
avef
orm
gra
ph m
ore
slow
ly, y
ou c
an a
dd a
tim
e de
lay
to th
e bl
ock
diag
ram
.
Com
plet
e th
e fo
llow
ing
step
s to
con
trol
the
spee
d at
whi
ch th
e V
I ru
ns.
1.O
n th
e bl
ock
diag
ram
, sea
rch
for t
he T
ime
Del
ay E
xpre
ss V
I, s
how
n at
le
ft, o
n th
e F
unct
ions
pal
ette
and
pla
ce it
insi
de th
e W
hile
Loo
p.
You
can
use
the
Tim
e D
elay
Exp
ress
VI
to c
ontr
ol th
e ex
ecut
ion
rate
of
the
VI.
2.E
nter
0.25
in th
e T
ime
dela
y (s
econ
ds)
text
box
.
Thi
s ti
me
dela
y sp
ecif
ies
how
fas
t the
loop
run
s. W
ith
a 0.
25 s
econ
d ti
me
dela
y, th
e lo
op it
erat
es o
nce
ever
y qu
arte
r of
a s
econ
d.
3.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se th
e C
onfi
gure
Tim
e D
elay
dia
log
box.
4.D
ispl
ay th
e fr
ont p
anel
and
run
the
VI.
5.C
lick
the
Ena
ble
swit
ch a
nd e
xam
ine
the
chan
ge o
n th
e gr
aph.
If th
e E
nabl
e sw
itch
is o
n, th
e gr
aph
disp
lays
the
redu
ced
sign
al. I
f the
E
nabl
e sw
itch
is o
ff, t
he g
raph
doe
s no
t dis
play
the
redu
ced
sign
al.
6.C
lick
the
STO
P b
utto
n to
sto
p th
e V
I.
Usin
g a
Tabl
e to
Dis
play
Dat
aC
ompl
ete
the
foll
owin
g st
eps
to d
ispl
ay a
col
lect
ion
of m
ean
valu
es in
a
fron
t pan
el ta
ble.
1.D
ispl
ay th
e fr
ont p
anel
.
2.O
n th
e C
ontr
ols
pale
tte
sear
ch f
or th
e E
xpre
ss T
able
indi
cato
r an
d ad
d it
to th
e ri
ght o
f th
e w
avef
orm
gra
ph.
3.D
ispl
ay th
e bl
ock
diag
ram
.
Lab
VIE
W w
ired
the
Tab
le te
rmin
al to
the
Bui
ld T
able
Exp
ress
VI.
4.If
the
Bui
ld T
able
Exp
ress
VI
and
the
Tab
le te
rmin
al a
re n
ot s
elec
ted
alre
ady,
cli
ck a
n op
en a
rea
on th
e bl
ock
diag
ram
to th
e le
ft o
f the
Bui
ld
Tabl
e E
xpre
ss V
I an
d th
e T
able
term
inal
. Dra
g th
e cu
rsor
dia
gona
lly
unti
l the
sel
ecti
on r
ecta
ngle
enc
lose
s th
e B
uild
Tab
le E
xpre
ss V
I an
d th
e T
able
term
inal
, sho
wn
at le
ft.
A m
ovin
g da
shed
out
line
, cal
led
a m
arqu
ee, h
ighl
ight
s th
e B
uild
Tab
le
Exp
ress
VI,
the
Tab
le te
rmin
al, a
nd th
e w
ire
join
ing
the
two.
Chap
ter 2
Cust
omizi
ng a
VI
Getti
ng S
tarte
d w
ith L
abVI
EW2-
10ni
.com
5.D
rag
the
obje
cts
into
the
Whi
le L
oop
to th
e ri
ght o
f th
e Sa
mpl
e C
ompr
essi
on E
xpre
ss V
I.
If y
ou d
rag
obje
cts
near
the
bord
er o
f the
Whi
le L
oop,
the
loop
resi
zes
to e
nclo
se th
e B
uild
Tab
le E
xpre
ss V
I and
the
Tab
le te
rmin
al a
fter
you
ad
d th
e ob
ject
to th
e bl
ock
diag
ram
.
6.U
se th
e W
irin
g to
ol to
wir
e th
e M
ean
outp
ut o
f th
e Sa
mpl
e C
ompr
essi
on E
xpre
ss V
I to
the
Sign
als
inpu
t of
the
Bui
ld T
able
E
xpre
ss V
I.
7.T
he b
lock
dia
gram
sho
uld
appe
ar s
imil
ar to
Fig
ure
2-5.
Figu
re 2
-5.
Bloc
k Di
agra
m o
f the
Red
uce
Sam
ples
VI
8.D
ispl
ay th
e fr
ont p
anel
and
arr
ange
the
cont
rols
and
indi
cato
rs a
s sh
own
in F
igur
e 2-
1.
9.R
un th
e V
I.
10.
Clic
k th
e E
nabl
e sw
itch
.
If th
e E
nabl
e sw
itch
is o
n, th
e ta
ble
disp
lays
the
mea
n va
lues
of
ever
y 25
sam
ples
of t
he s
ine
wav
e. If
the
Ena
ble
swit
ch is
off
, the
tabl
e do
es
not r
ecor
d th
e m
ean
valu
es.
11.
Stop
the
VI.
12.
Exp
erim
ent w
ith
prop
erti
es o
f the
tabl
e by
usi
ng th
e T
able
Pro
pert
ies
dial
og b
ox. F
or e
xam
ple,
try
chan
ging
the
num
ber
of c
olum
ns to
one
.
13.
Save
and
clo
se th
e V
I.
Chap
ter 2
Cust
omizi
ng a
VI
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n2-
11Ge
tting
Sta
rted
with
Lab
VIEW
Sear
chin
g fo
r Exa
mpl
esT
o le
arn
mor
e ab
out h
ow y
ou c
an u
se a
cer
tain
VI,
you
can
sea
rch
for
and
view
an
exam
ple
that
use
s th
e V
I.
Com
plet
e th
e fo
llow
ing
step
s to
fin
d an
d op
en a
n ex
ampl
e th
at u
ses
the
Tim
e D
elay
Exp
ress
VI.
1.In
the
Hel
p se
ctio
n of
the
Get
ting
Sta
rted
win
dow
, sel
ect L
abV
IEW
H
elp
to d
ispl
ay th
e L
abV
IEW
Hel
p.
2.C
lick
the
Sear
ch ta
b. I
n th
e T
ype
in t
he w
ord(
s) t
o se
arch
for
text
bo
x en
ter time delay express VI
and
pre
ss th
e <
Ent
er>
key
. (M
ac O
S X
and
Linu
x) C
hoos
e th
e F
ull T
ext
optio
n in
the
Sear
ch
Opt
ions
sec
tion
of th
e Se
arch
the
Lab
VIE
W H
elp
dial
og b
ox to
na
rrow
the
sear
ch r
esul
ts.
Tip
Ref
er to
the
Usi
ng H
elp
book
on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out s
earc
hing
hel
p. (W
indo
ws)
Bef
ore
you
sear
ch, y
ou c
an n
arro
w th
e se
arch
re
sult
s by
pla
cing
a c
heck
mar
k in
the
Sear
ch t
itle
s on
ly c
heck
box
near
the
bott
om o
f th
e he
lp w
indo
w. Y
ou a
lso
can
use
oper
ator
s su
ch a
s AND
, OR
, and
NEAR
in th
e T
ype
in t
he
wor
d(s)
to
sear
ch f
or te
xt b
ox to
nar
row
the
sear
ch r
esul
ts.
3.(W
indo
ws)
Cli
ck th
e L
ocat
ion
colu
mn
head
er to
sor
t the
sea
rch
resu
lts
by c
onte
nt ty
pe. R
efer
ence
topi
cs c
onta
in re
fere
nce
info
rmat
ion
abou
t L
abV
IEW
obj
ects
suc
h as
VIs
, fun
ctio
ns, p
alet
tes,
men
us, a
nd to
ols.
H
ow-T
o to
pics
con
tain
ste
p-by
-ste
p in
stru
ctio
ns f
or u
sing
Lab
VIE
W.
Con
cept
topi
cs c
onta
in in
form
atio
n ab
out L
abV
IEW
pro
gram
min
g co
ncep
ts.
4.D
oubl
e-cl
ick
the
Tim
e D
elay
Exp
ress
VI
sear
ch r
esul
t to
disp
lay
the
refe
renc
e to
pic
that
des
crib
es th
e T
ime
Del
ay E
xpre
ss V
I.
5.A
fter
you
rea
d th
e de
scri
ptio
n of
the
Exp
ress
VI,
cli
ck th
e O
pen
exam
ple
butto
n in
the
Exa
mpl
e se
ctio
n ne
ar th
e bo
ttom
of t
he to
pic
to
open
an
exam
ple
that
use
s th
e T
ime
Del
ay E
xpre
ss V
I.
6.R
un th
e V
I an
d m
ove
the
vert
ical
poi
nter
sli
des.
The
am
plit
udes
of
Val
ue A
and
B c
hang
e as
you
mov
e th
e ve
rtic
al p
oint
er s
lide
s.
7.St
op th
e V
I.
8.Se
lect
Win
dow
»Sho
w B
lock
Dia
gram
and
rea
d th
e bl
ock
diag
ram
co
mm
ents
.
9.C
lose
the
exam
ple
VI
and
open
the
Lab
VIE
W H
elp
win
dow
.
10.
Cli
ck th
e F
ind
rela
ted
exam
ples
but
ton
to o
pen
the
NI
Exa
mpl
e Fi
nder
and
dis
play
a li
st o
f ex
ampl
es s
imil
ar to
the
exam
ple
that
use
s th
is V
I. T
he N
IE
xam
ple
Find
er s
earc
hes
amon
g hu
ndre
ds o
f
Chap
ter 2
Cust
omizi
ng a
VI
Getti
ng S
tarte
d w
ith L
abVI
EW2-
12ni
.com
exam
ples
, inc
ludi
ng a
ll in
stal
led
exam
ples
and
the
exam
ples
loca
ted
on th
e N
ID
evel
oper
Zon
e at
ni.com/zone
. You
can
mod
ify
an
exam
ple
to f
it a
n ap
plic
atio
n, o
r yo
u ca
n co
py a
nd p
aste
fro
m o
ne o
r m
ore
exam
ples
into
a V
I th
at y
ou c
reat
e.
Note
Alw
ays
sele
ct F
ile»S
ave
As w
hen
you
save
a m
odif
ied
exam
ple
to a
void
ove
rwri
ting
th
e ex
ampl
e pr
ogra
m in
the
NI
Exa
mpl
e Fi
nder
.
You
als
o ca
n ri
ght-
clic
k a
VI
or f
unct
ion
on th
e bl
ock
diag
ram
or
on a
pi
nned
pal
ette
and
sel
ect E
xam
ples
from
the
shor
tcut
men
u to
dis
play
a
help
topi
c w
ith li
nks
to e
xam
ples
for
that
VI
or f
unct
ion.
To
laun
ch
the
NI
Exa
mpl
e Fi
nder
and
bro
wse
or
sear
ch e
xam
ples
, sel
ect
Hel
p»F
ind
Exa
mpl
es o
r cl
ick
the
Fin
d E
xam
ples
link
in th
e E
xam
ples
sec
tion
of
the
Get
ting
Sta
rted
win
dow
.
Note
The
re is
not
an
exam
ple
for
all V
Is.
11.
Aft
er y
ou e
xper
imen
t wit
h th
e N
I E
xam
ple
Find
er a
nd th
e ex
ampl
e V
Is, c
lose
the
NI
Exa
mpl
e Fi
nder
.
Sum
mar
yT
he f
ollo
win
g to
pics
are
a s
umm
ary
of th
e m
ain
conc
epts
you
lear
ned
in
this
cha
pter
.
Usin
g th
e La
bVIE
W H
elp
Reso
urce
sIn
this
cha
pter
, you
lear
ned
to u
se th
e he
lp re
sour
ces
in th
e fo
llow
ing
way
s:
•T
he C
onte
xt H
elp
win
dow
dis
play
s ba
sic
info
rmat
ion
abou
t L
abV
IEW
obj
ects
whe
n yo
u m
ove
the
curs
or o
ver e
ach
obje
ct. O
bjec
ts
wit
h co
ntex
t hel
p in
form
atio
n in
clud
e V
Is, f
unct
ions
, str
uctu
res,
pa
lett
es, d
ialo
g bo
x co
mpo
nent
s, a
nd s
o on
. To
acce
ss th
e C
onte
xt
Hel
p w
indo
w, s
elec
t Hel
p»Sh
ow C
onte
xt H
elp
or p
ress
the
<C
trl-
H>
ke
ys. (
Mac
OS
X) P
ress
the
<C
omm
and-
Shif
t-H
> k
eys.
•W
hen
you
mov
e th
e cu
rsor
ove
r an
Exp
ress
VI
on th
e bl
ock
diag
ram
, th
e C
onte
xt H
elp
win
dow
dis
play
s a
brie
f de
scri
ptio
n of
the
Exp
ress
V
I an
d in
form
atio
n ab
out h
ow y
ou c
onfi
gure
d th
e E
xpre
ss V
I.
•T
he L
abV
IEW
Hel
p co
ntai
ns d
etai
led
info
rmat
ion
abou
t Lab
VIE
W
obje
cts.
To
acce
ss th
e L
abV
IEW
Hel
p to
pic
for
an o
bjec
t, m
ove
the
curs
or o
ver
the
obje
ct a
nd c
lick
the
Det
aile
d he
lp li
nk in
the
Con
text
H
elp
win
dow
. You
als
o ca
n ri
ght-
clic
k an
obj
ect o
n th
e bl
ock
diag
ram
or
on
a pi
nned
pal
ette
and
sel
ect H
elp
from
the
shor
tcut
men
u.
Chap
ter 2
Cust
omizi
ng a
VI
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n2-
13Ge
tting
Sta
rted
with
Lab
VIEW
•To
nav
igat
e th
e L
abV
IEW
Hel
p, u
se th
e C
onte
nts,
Ind
ex, a
nd S
earc
h ta
bs. U
se th
e C
onte
nts
tab
to g
et a
n ov
ervi
ew o
f th
e to
pics
and
st
ruct
ure
of th
e he
lp. U
se th
e In
dex
tab
to f
ind
a to
pic
by k
eyw
ord.
U
seth
e Se
arch
tab
to s
earc
h th
e he
lp f
or a
wor
d or
phr
ase.
•If
you
fin
d an
obj
ect i
n th
e L
abV
IEW
Hel
p yo
u w
ant t
o us
e, y
ou c
an
clic
k an
Add
to
the
bloc
k di
agra
m b
utto
n to
pla
ce th
e ob
ject
on
the
bloc
k di
agra
m.
•O
n th
e Se
arch
tab
of th
e L
abV
IEW
Hel
p, u
se o
pera
tors
suc
h as
AND
, OR
, and
NEAR
to n
arro
w th
e se
arch
res
ults
. To
sear
ch f
or a
n ex
act
phra
se, p
lace
quo
tati
on m
arks
aro
und
the
phra
se. B
efor
e yo
u se
arch
, yo
u al
so c
an n
arro
w th
e se
arch
res
ults
by
plac
ing
a ch
eckm
ark
in th
e Se
arch
tit
les
only
che
ckbo
x ne
ar th
e bo
ttom
of
the
help
win
dow
.
•O
n th
e Se
arch
tab
of th
e L
abV
IEW
Hel
p, y
ou c
an c
lick
the
Loc
atio
n co
lum
n he
ader
abo
ve th
e lis
t of
sear
ch r
esul
ts to
sor
t the
res
ults
by
cont
ent t
ype.
Ref
eren
ce to
pics
con
tain
ref
eren
ce in
form
atio
n ab
out
Lab
VIE
W o
bjec
ts s
uch
as V
Is, f
unct
ions
, pal
ette
s, m
enus
, and
tool
s.
How
-To
topi
cs c
onta
in s
tep-
by-s
tep
inst
ruct
ions
for
usi
ng L
abV
IEW
. C
once
pt to
pics
con
tain
info
rmat
ion
abou
t Lab
VIE
W p
rogr
amm
ing
conc
epts
.
Cust
omiz
ing
the
Bloc
k Di
agra
m C
ode
You
als
o ca
n us
e m
any
cont
rols
, ind
icat
ors,
Exp
ress
VIs
, and
str
uctu
res
to
buil
d a
VI.
You
can
cus
tom
ize
VIs
in m
any
way
s. T
he fo
llow
ing
exam
ples
re
view
a f
ew c
omm
on w
ays
to c
usto
miz
e V
Is, i
nclu
ding
cre
atin
g co
ntro
ls
and
indi
cato
rs, c
onfi
guri
ng w
hen
VI
stop
s, c
orre
ctin
g br
oken
wir
es, a
nd
disp
layi
ng d
ata
in a
tabl
e.
Crea
ting
Cont
rols
and
Indi
cato
rsC
reat
e co
ntro
ls a
nd in
dica
tors
on
the
bloc
k di
agra
m b
y ri
ght-
clic
king
the
Exp
ress
VI i
nput
, out
put,
or w
ire,
sel
ecti
ng C
reat
e fr
om th
e sh
ortc
ut m
enu,
an
d se
lect
ing
amon
g th
e av
aila
ble
opti
ons.
Lab
VIE
W w
ires
the
cont
rol o
r in
dica
tor
you
crea
ted
to th
e in
put,
outp
ut, o
r w
ire
you
righ
t-cl
icke
d.
Con
trol
term
inal
s ha
ve a
thic
ker
bord
er th
an in
dica
tor
term
inal
s. A
lso,
an
arro
w a
ppea
rs o
n th
e ri
ght o
f th
e te
rmin
al if
the
term
inal
is a
con
trol
, and
an
arr
ow a
ppea
rs o
n th
e le
ft o
f th
e te
rmin
al if
the
term
inal
is a
n in
dica
tor.
Chap
ter 2
Cust
omizi
ng a
VI
Getti
ng S
tarte
d w
ith L
abVI
EW2-
14ni
.com
Cont
rolli
ng W
hen
a VI
Sto
ps R
unni
ngU
se a
Whi
le L
oop
to r
un th
e co
de e
nclo
sed
wit
hin
the
loop
con
tinua
lly.
A W
hile
Loo
p st
ops
runn
ing
whe
n a
stop
con
diti
on o
ccur
s. A
fter
you
pla
ce
or m
ove
an o
bjec
t in
a W
hile
Loo
p ne
ar th
e bo
rder
, the
loop
res
izes
to a
dd
spac
e fo
r th
at o
bjec
t.
The
Exe
cuti
on C
ontr
ol p
alet
te in
clud
es o
bjec
ts y
ou c
an u
se to
con
trol
the
num
ber
of ti
mes
a V
I ru
ns, a
s w
ell a
s th
e sp
eed
at w
hich
the
VI
runs
.
Erro
rs a
nd B
roke
n W
ires
The
Run
but
ton
appe
ars
brok
en w
hen
the
VI
you
are
crea
ting
or
edit
ing
cont
ains
err
ors.
If th
e R
un b
utto
n is
stil
l bro
ken
whe
n yo
u fi
nish
wir
ing
the
bloc
k di
agra
m, t
he V
I is
bro
ken
and
cann
ot r
un.
Clic
k th
e br
oken
Run
but
ton
or s
elec
t Vie
w»E
rror
Lis
t to
fin
d ou
t why
a
VI i
s br
oken
. You
can
use
the
Err
or li
st w
indo
w to
loca
te e
rror
s. C
lick
the
Hel
p bu
tton
for m
ore
info
rmat
ion
abou
t the
err
or. D
oubl
e-cl
ick
the
erro
r in
the
erro
rs a
nd w
arni
ngs
fiel
d to
hig
hlig
ht th
e pr
oble
m c
ausi
ng th
e er
ror.
A b
roke
n w
ire
appe
ars
as a
das
hed
blac
k li
ne w
ith
a re
d X
in th
e m
iddl
e.
Bro
ken
wir
es o
ccur
for
a v
arie
ty o
f re
ason
s, s
uch
as if
you
del
ete
wir
ed
obje
cts.
The
VI
cann
ot r
un if
the
bloc
k di
agra
m c
onta
ins
brok
en w
ires
.
Mov
e th
e W
irin
g to
ol o
ver a
bro
ken
wir
e to
dis
play
a ti
p st
rip
that
des
crib
es
why
the
wir
e is
bro
ken.
Thi
s in
form
atio
n al
so a
ppea
rs in
the
Con
text
Hel
p w
indo
w w
hen
you
mov
e th
e W
irin
g to
ol o
ver a
bro
ken
wir
e. R
ight
-clic
k th
e w
ire
and
sele
ct L
ist
Err
ors
from
the
shor
tcut
men
u to
dis
play
the
Err
or
list
win
dow
. Clic
k th
e H
elp
butto
n fo
r m
ore
info
rmat
ion
abou
t why
the
wir
e is
bro
ken.
Disp
layi
ng D
ata
in a
Tab
leT
he ta
ble
indi
cato
r dis
play
s ge
nera
ted
data
. Use
the
Bui
ld T
able
Exp
ress
VI
to b
uild
a ta
ble
of g
ener
ated
dat
a.
Usin
g th
e NI
Exa
mpl
e Fi
nder
Use
the
NI E
xam
ple
Find
er to
bro
wse
or s
earc
h ex
ampl
es in
stal
led
on y
our
com
pute
r or
on
the
NI
Dev
elop
er Z
one
at ni.com/zone
. The
se e
xam
ples
de
mon
stra
te h
ow to
use
Lab
VIE
W to
per
form
a w
ide
vari
ety
of te
st,
mea
sure
men
t, co
ntro
l, an
d de
sign
task
s. S
elec
t Hel
p»F
ind
Exa
mpl
es o
r cl
ick
the
Fin
d E
xam
ples
link
in th
e E
xam
ples
sec
tion
of th
e G
etti
ng
Star
ted
win
dow
to la
unch
the
NI
Exa
mpl
e Fi
nder
.
Chap
ter 2
Cust
omizi
ng a
VI
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n2-
15Ge
tting
Sta
rted
with
Lab
VIEW
Exa
mpl
es c
an s
how
you
how
to u
se s
peci
fic
VIs
or
func
tion
s. Y
ou c
an
righ
t-cl
ick
a V
I or f
unct
ion
on th
e bl
ock
diag
ram
or o
n a
pinn
ed p
alet
te a
nd
sele
ct E
xam
ples
fro
m th
e sh
ortc
ut m
enu
to d
ispl
ay a
hel
p to
pic
wit
h li
nks
to e
xam
ples
for t
hat V
I or f
unct
ion.
You
can
mod
ify
an e
xam
ple
VI t
o fi
t an
appl
icat
ion,
or
you
can
copy
and
pas
te f
rom
one
or
mor
e ex
ampl
es in
to a
V
I th
at y
ou c
reat
e.
Alw
ays
sele
ct F
ile»S
ave
As
whe
n yo
u sa
ve a
mod
ifie
d ex
ampl
e to
avo
id
acci
dent
ally
ove
rwri
ting
the
exam
ple
prog
ram
in th
e N
I E
xam
ple
Find
er.
Shor
tcut
sT
his
chap
ter
intr
oduc
ed th
e fo
llow
ing
keyb
oard
sho
rtcu
ts.
Note
The
<C
trl>
key
in th
ese
shor
tcut
s co
rres
pond
s to
the
(Mac
OS
X) <
Opt
ion>
or
<C
omm
and>
key
or
(Lin
ux) <
Alt
> k
ey.
Shor
tcut
Fun
ctio
n
<C
trl-
N>
Ope
ns a
new
, bla
nk V
I.
<C
trl-
H>
Show
s or
hid
es th
e C
onte
xt H
elp
win
dow
. (M
ac O
S X)
Pre
ss th
e <
Com
man
d-Sh
ift-
H>
key
s.
<C
trl-
Spac
e>D
ispl
ays
the
Qui
ck D
rop
dial
og b
ox.
(Mac
OS
X) P
ress
the
<C
omm
and-
Shif
t-Sp
ace>
ke
ys.
<C
trl-
B>
Del
etes
all
bro
ken
wir
es in
a V
I.
<C
trl-
L>
Dis
play
s th
e E
rror
list
win
dow
.
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n3-
1Ge
tting
Sta
rted
with
Lab
VIEW3
Anal
yzin
g an
d Sa
ving
a S
igna
l
Lab
VIE
W in
clud
es a
set
of E
xpre
ss V
Is th
at h
elp
you
anal
yze
sign
als.
Thi
s ch
apte
r te
ache
s yo
u ho
w to
use
Lab
VIE
W to
per
form
a b
asic
ana
lysi
s of
a
sign
al a
nd h
ow to
sav
e th
e an
alyz
ed d
ata
to a
fil
e.
Note
The
exe
rcis
es in
this
cha
pter
use
Exp
ress
VIs
that
are
ava
ilab
le o
nly
in th
e L
abV
IEW
Fu
ll a
nd P
rofe
ssio
nal D
evel
opm
ent S
yste
ms.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
Getti
ng S
tarte
d w
ith L
abVI
EW3-
2ni
.com
Build
ing
an A
naly
sis
VIIn
the
follo
win
g ex
erci
ses,
you
will
bui
ld a
VI t
hat g
ener
ates
a s
igna
l, fi
lters
th
e si
gnal
, ind
icat
es if
the
sign
al e
xcee
ds a
cer
tain
lim
it, a
nd r
ecor
ds th
e da
ta. A
fter
you
com
plet
e th
e ex
erci
ses,
the
fron
t pan
el o
f th
e V
I w
ill l
ook
sim
ilar
to th
e fr
ont p
anel
in F
igur
e3-
1.
You
can
com
plet
e th
e ex
erci
ses
in th
is c
hapt
er in
app
roxi
mat
ely
40 m
inut
es.
Figu
re 3
-1.
Fron
t Pan
el o
f the
Sav
e Da
ta V
I
Mod
ifyin
g a
VI C
reat
ed fr
om a
Tem
plat
eC
ompl
ete
the
foll
owin
g st
eps
to c
reat
e a
VI
that
gen
erat
es, a
naly
zes,
and
di
spla
ys a
sig
nal.
1.In
the
Get
ting
Sta
rted
win
dow
, clic
k N
ew to
dis
play
the
New
dia
log
box.
2.Fr
om th
e C
reat
e N
ew li
st, s
elec
t VI»
Fro
m T
empl
ate»
Tut
oria
l (G
etti
ng S
tart
ed)»
Gen
erat
e, A
naly
ze, a
nd D
ispl
ay. T
his
tem
plat
e V
I si
mul
ates
a s
igna
l and
ana
lyze
s it
for
its r
oot m
ean
squa
re (
RM
S)
valu
e.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n3-
3Ge
tting
Sta
rted
with
Lab
VIEW
3.C
lick
the
OK
but
ton
or d
oubl
e-cl
ick
the
nam
e of
the
tem
plat
e to
cre
ate
a V
I fr
om th
e te
mpl
ate.
4.If
the
Con
text
Hel
p w
indo
w is
not
vis
ible
, pre
ss th
e <
Ctr
l-H
> k
eys
to
disp
lay
the
win
dow
. (M
ac O
S X)
Pre
ss th
e <
Com
man
d-Sh
ift-
H>
key
s.
5.D
ispl
ay th
e bl
ock
diag
ram
by
pres
sing
the
<C
trl-
E>
key
s.
6.M
ove
the
curs
or o
ver t
he A
mpl
itud
e an
d L
evel
Mea
sure
men
ts E
xpre
ss
VI,
sho
wn
at le
ft.
The
Con
text
Hel
p w
indo
w d
ispl
ays
info
rmat
ion
abou
t the
beh
avio
r of
the
Exp
ress
VI.
Kee
p th
e C
onte
xt H
elp
win
dow
ope
n. I
t wil
l pro
vide
use
ful
info
rmat
ion
as y
ou c
ompl
ete
the
rest
of
this
exe
rcis
e.
7.D
ispl
ay th
e fr
ont p
anel
and
rem
ove
the
RM
S in
dica
tor,
show
n at
left
.
You
will
not
use
the
RM
S fu
nctio
nalit
y of
the
Am
plitu
de a
nd L
evel
M
easu
rem
ents
Exp
ress
VI
for
this
exe
rcis
e. H
owev
er, y
ou c
an u
se th
e G
ener
ate,
Ana
lyze
, and
Dis
play
tem
plat
e V
I w
ith th
e R
MS
func
tiona
lity
in th
e fu
ture
to r
educ
e de
velo
pmen
t tim
e.
8.D
ispl
ay th
e bl
ock
diag
ram
and
rem
ove
any
brok
en w
ires
that
res
ult
from
rem
ovin
g th
e R
MS
indi
cato
r. To
rem
ove
all b
roke
n w
ires
fro
m
the
bloc
k di
agra
m, y
ou c
an p
ress
the
<C
trl-
B>
key
s.
9.T
hen
retu
rn to
the
fron
t pan
el w
indo
w a
nd r
ight
-clic
k th
e w
avef
orm
gr
aph
indi
cato
r. Se
lect
Pro
pert
ies f
rom
the
shor
tcut
men
u. T
he G
raph
P
rope
rtie
s di
alog
box
app
ears
.
10.
On
the
App
eara
nce
page
, pla
ce a
che
ckm
ark
in th
e V
isib
le c
heck
box
in th
e L
abel
sec
tion
and
ente
r Unfiltered Signal
in th
e te
xt b
ox.
11.
Clic
k th
e O
K b
utto
n to
sav
e th
e co
nfig
urat
ion
and
clos
e th
e G
raph
P
rope
rtie
s di
alog
box
.
12.
Run
the
VI.
The
sig
nal a
ppea
rs in
the
grap
h.
13.
Clic
k th
e ST
OP
but
ton
to s
top
the
VI.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
Getti
ng S
tarte
d w
ith L
abVI
EW3-
4ni
.com
Addi
ng a
Sig
nal
The
Sim
ulat
e Si
gnal
Exp
ress
VI s
imul
ates
a s
ine
wav
e by
def
ault.
You
can
cu
stom
ize
the
sim
ulat
ed s
igna
l by
chan
ging
the
optio
ns in
the
Con
figu
re
Sim
ulat
e Si
gnal
dia
log
box.
Com
plet
e th
e fo
llow
ing
step
s to
cre
ate
an a
dditi
onal
sim
ulat
ed s
igna
l tha
t ad
ds u
nifo
rm w
hite
noi
se to
the
sine
wav
e.
1.O
n th
e bl
ock
diag
ram
, use
the
Posi
tion
ing
tool
to s
elec
t the
Sim
ulat
e Si
gnal
Exp
ress
VI.
Hol
d do
wn
the
<C
trl>
key
and
cli
ck a
nd d
rag
to c
reat
e an
add
itio
nal
Sim
ulat
e Si
gnal
Exp
ress
VI
on th
e bl
ock
diag
ram
. (M
ac O
S X)
Hol
d do
wn
the
<O
ptio
n> k
ey a
nd d
rag.
(Lin
ux) Y
ou a
lso
can
hold
dow
n th
e m
iddl
e m
ouse
but
ton
and
drag
.
2.R
elea
se th
e m
ouse
but
ton
to p
lace
the
copi
ed S
imul
ate
Sign
al E
xpre
ss
VI
belo
w th
e or
igin
al S
imul
ate
Sign
al E
xpre
ss V
I. L
abV
IEW
upd
ates
th
e na
me
of th
e co
pied
Sim
ulat
e Si
gnal
Exp
ress
VI
to S
imul
ate
Sign
al2.
3.D
oubl
e-cl
ick
the
Sim
ulat
e Si
gnal
2 E
xpre
ss V
I to
dis
play
the
Con
figu
re S
imul
ate
Sign
al d
ialo
g bo
x.
4.Se
lect
Sin
e fr
om th
e Si
gnal
typ
e pu
ll-do
wn
men
u.
5.E
nter
60
in th
e F
requ
ency
(H
z) te
xt b
ox.
6.E
nter
0.1
in th
e A
mpl
itud
e te
xt b
ox.
7.Pl
ace
a ch
eckm
ark
in th
e A
dd n
oise
che
ckbo
x to
add
noi
se to
the
sine
si
gnal
.
8.Se
lect
Uni
form
Whi
te N
oise
fro
m th
e N
oise
typ
e pu
ll-d
own
men
u.
9.E
nter
0.1
in th
e N
oise
am
plit
ude
text
box
.
10.
Ent
er -1
in th
e Se
ed n
umbe
r te
xt b
ox.
11.
In th
e T
imin
g se
ctio
n, s
elec
t the
Run
as
fast
as
poss
ible
opt
ion.
12.
In th
e Si
gnal
Nam
e se
ctio
n, r
emov
e th
e ch
eckm
ark
from
the
Use
si
gnal
typ
e na
me
chec
kbox
.
13.
Ent
er 60 Hz and Noise
in th
e Si
gnal
nam
e te
xt b
ox.
Whe
n yo
u ch
ange
the
sign
al n
ame
in th
e C
onfi
gure
Sim
ulat
e Si
gnal
di
alog
box
, Lab
VIE
W c
hang
es th
e na
me
of th
e si
gnal
out
put o
n th
e bl
ock
diag
ram
. Cha
ngin
g th
e si
gnal
nam
e m
akes
it e
asie
r fo
r yo
u to
id
enti
fy th
e si
gnal
type
whe
n yo
u vi
ew th
e E
xpre
ss V
I on
the
bloc
k di
agra
m.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n3-
5Ge
tting
Sta
rted
with
Lab
VIEW
The
Res
ult P
revi
ew s
ecti
on d
ispl
ays
a ra
ndom
sig
nal.
The
Con
figu
re
Sim
ulat
e Si
gnal
dia
log
box
shou
ld a
ppea
r si
mil
ar to
Figu
re3-
2.
Figu
re 3
-2.
Conf
igur
e Si
mul
ate
Sign
al D
ialo
g Bo
x
14.
Cli
ck th
e O
K b
utto
n to
sav
e th
e cu
rren
t con
figu
rati
on a
nd c
lose
th
eC
onfi
gure
Sim
ulat
e Si
gnal
dia
log
box.
Addi
ng T
wo
Sign
als T
o ad
d tw
o si
gnal
s to
geth
er to
cre
ate
one
sign
al, y
ou c
an u
se th
e Fo
rmul
a E
xpre
ss V
I. R
athe
r th
an m
ergi
ng tw
o si
gnal
s on
one
gra
ph, t
he F
orm
ula
Exp
ress
VI a
dds
both
sig
nals
toge
ther
to c
reat
e a
sing
le s
igna
l on
the
grap
h.
You
can
use
this
Exp
ress
VI
to a
dd n
oise
to a
sig
nal.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
Getti
ng S
tarte
d w
ith L
abVI
EW3-
6ni
.com
Com
plet
e th
e fo
llow
ing
step
s to
add
the
60 H
z an
d N
oise
sig
nal t
o th
e Si
ne
sign
al.
1.In
the
bloc
k di
agra
m w
indo
w, t
ripl
e-cl
ick
the
wir
e th
at c
onne
cts
the
Sine
out
put o
f th
e Si
mul
ate
Sign
al E
xpre
ss V
I to
the
Sign
als
inpu
t of
the
Am
plit
ude
and
Lev
el M
easu
rem
ents
Exp
ress
VI
and
to th
e U
nfilt
ered
Sig
nal i
ndic
ator
. Rem
ove
the
wir
e.
2.O
n th
e F
unct
ions
pal
ette
, clic
k th
e Se
arch
but
ton
to s
earc
h fo
r th
e Fo
rmul
a E
xpre
ss V
I, s
how
n at
left
, and
add
it to
the
bloc
k di
agra
m
betw
een
the
Sim
ulat
e Si
gnal
Exp
ress
VIs
and
the
Am
plit
ude
and
Lev
el
Mea
sure
men
ts E
xpre
ss V
I. T
he C
onfi
gure
For
mul
a di
alog
box
ap
pear
s.
Note
Lab
VIE
W d
ispl
ays
a fo
lder
gly
ph to
the
left
of
subp
alet
tes
in th
e se
arch
res
ults
and
di
spla
ys a
ligh
t blu
e gl
yph
to th
e le
ft o
f E
xpre
ss V
Is in
the
sear
ch r
esul
ts.
3.In
the
Lab
el c
olum
n, c
hang
e th
e la
bel f
or X
1 to
Sine
and
the
labe
l for
X
2 to
60 Hz and Noise
.
The
For
mul
a E
xpre
ss V
I au
tom
atic
ally
ent
ers
the
firs
t inp
ut, S
ine,
in
the
For
mul
a te
xt b
ox.
4.C
lick
the
+ bu
tton
and
then
the
X2
butto
n to
add
Sin
e an
d 60
Hz
and
Noi
se to
geth
er in
the
For
mul
a te
xt b
ox.
5.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se th
e C
onfi
gure
For
mul
a di
alog
box
.
6.U
se th
e W
irin
g to
ol to
wir
e th
e Si
ne o
utpu
t of
the
Sim
ulat
e Si
gnal
E
xpre
ss V
I to
the
Sine
inpu
t of
the
Form
ula
Exp
ress
VI.
7.W
ire
the
60 H
z an
d N
oise
out
put o
f th
e Si
mul
ate
Sign
al2
Exp
ress
VI
to th
e 60
Hz
and
Noi
se in
put o
f th
e Fo
rmul
a E
xpre
ss V
I.
8.W
ire
the
Res
ult
outp
ut o
f th
e Fo
rmul
a E
xpre
ss V
I to
the
Unf
ilter
ed
Sign
al in
dica
tor
and
to th
e Si
gnal
s in
put o
f th
e A
mpl
itude
and
Lev
el
Mea
sure
men
ts E
xpre
ss V
I.
9.D
ispl
ay th
e fr
ont p
anel
by
pres
sing
the
<C
trl-
E>
key
s.
10.
Run
the
VI.
The
sig
nal w
ith
adde
d no
ise
appe
ars
in th
e gr
aph.
11.
Cli
ck th
e ST
OP
but
ton
to s
top
the
VI.
12.
Sele
ct F
ile»S
ave
As
and
save
the
VI
as Analysis.vi
in a
n ea
sily
ac
cess
ible
loca
tion
.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n3-
7Ge
tting
Sta
rted
with
Lab
VIEW
Filte
ring
a Si
gnal
You
can
use
the
Filt
er E
xpre
ss V
I to
pro
cess
sig
nals
thro
ugh
filt
ers
and
win
dow
s.
Com
plet
e th
e fo
llow
ing
step
s to
con
figu
re th
e Fi
lter E
xpre
ss V
I to
filte
r the
si
gnal
usi
ng a
n in
fini
te im
puls
e re
spon
se (
IIR
) fi
lter.
1.D
ispl
ay th
e bl
ock
diag
ram
win
dow
and
rem
ove
the
wir
e th
at c
onne
cts
the
Res
ult o
utpu
t of t
he F
orm
ula
Exp
ress
VI t
o th
e Si
gnal
s inp
ut o
f the
A
mpl
itud
e an
d L
evel
Mea
sure
men
ts E
xpre
ss V
I.
2.R
emov
e al
l bro
ken
wir
es th
at r
esul
t fro
m r
emov
ing
the
wir
e.
3.Se
arch
for
the
Filt
er E
xpre
ss V
I, s
how
n at
left
, and
add
it to
the
bloc
k di
agra
m b
etw
een
the
Sim
ulat
e Si
gnal
2 E
xpre
ss V
I an
d th
e A
mpl
itud
e an
d L
evel
Mea
sure
men
ts E
xpre
ss V
I. T
he C
onfi
gure
Filt
er d
ialo
g bo
x ap
pear
s.
4.In
the
Filt
er S
peci
fica
tion
s se
ctio
n, c
hang
e th
e C
utof
f F
requ
ency
(H
z) to
25
.
5.C
lick
the
OK
but
ton
to s
ave
the
conf
igur
atio
n an
d cl
ose
the
Con
figu
re
Filt
er d
ialo
g bo
x.
6.D
ispl
ay th
e fr
ont p
anel
.
7.C
lick
the
Unf
ilter
ed S
igna
l wav
efor
m g
raph
indi
cato
r an
d pr
ess
the
<C
trl>
key
whi
le y
ou d
rag
with
the
Posi
tioni
ng to
ol to
cre
ate
an
addi
tiona
l wav
efor
m g
raph
indi
cato
r.
8.T
ripl
e-cl
ick
the
Unf
ilter
ed S
igna
l 2 la
bel a
bove
the
new
wav
efor
m
grap
h in
dica
tor
and
ente
r Filtered Signal
to c
hang
e th
e la
bel o
f th
e in
dica
tor.
You
als
o ca
n ch
ange
the
labe
l on
the
App
eara
nce
page
of
the
Gra
ph P
rope
rtie
s di
alog
box
.
9.O
n th
e bl
ock
diag
ram
, wir
e th
e R
esul
t out
put o
f th
e Fo
rmul
a E
xpre
ss
VI
to th
e Si
gnal
inpu
t of
the
Filt
er E
xpre
ss V
I an
d to
the
Unf
ilter
ed
Sign
al w
avef
orm
gra
ph in
dica
tor.
10.
Wir
e th
e F
ilter
ed S
igna
l out
put o
f the
Fil
ter E
xpre
ss V
I to
the
Sign
als
inpu
t of t
he A
mpl
itud
e an
d L
evel
Mea
sure
men
ts E
xpre
ss V
I and
to th
e in
put o
f th
e F
ilter
ed S
igna
l wav
efor
m g
raph
indi
cato
r.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
Getti
ng S
tarte
d w
ith L
abVI
EW3-
8ni
.com
11.
Sele
ct F
ile»S
ave.
The
blo
ck d
iagr
am o
f the
Ana
lysi
s V
I sho
uld
appe
ar
sim
ilar
to F
igur
e3-
3.
Figu
re 3
-3.
Bloc
k Di
agra
m o
f the
Ana
lysi
s VI
Mod
ifyin
g th
e Ap
pear
ance
of G
raph
sY
ou c
an u
se th
e D
ispl
ay F
orm
at p
age
of th
e G
raph
Pro
pert
ies
dial
og b
ox
to s
peci
fy h
ow th
e sc
ales
of
the
x-ax
is a
nd y
-axi
s ap
pear
on
the
grap
h.
Com
plet
e th
e fo
llow
ing
step
s to
cha
nge
the
form
at o
f the
x-a
xis
and
y-ax
is
of th
e U
nfilt
ered
Sig
nal a
nd F
ilter
ed S
igna
l gra
phs.
1.In
the
fron
t pan
el w
indo
w, r
ight
-clic
k th
e U
nfilt
ered
Sig
nal g
raph
in
dica
tor
and
sele
ct P
rope
rtie
s fr
om th
e sh
ortc
ut m
enu.
The
Gra
ph
Pro
pert
ies
dial
og b
ox a
ppea
rs.
2.O
n th
e D
ispl
ay F
orm
at p
age,
sel
ect T
ime
(X-A
xis)
fro
m th
e to
p pu
ll-do
wn
men
u.
3.Se
lect
the
Def
ault
edi
ting
mod
e op
tion
.
4.In
the
Typ
e li
st, s
elec
t Aut
omat
ic f
orm
atti
ng.
5.In
the
Dig
its
fiel
d, e
nter
6 a
nd s
elec
t Sig
nifi
cant
dig
its
from
the
Pre
cisi
on T
ype
pull-
dow
n m
enu.
6.Pl
ace
a ch
eckm
ark
in th
e H
ide
trai
ling
zero
s ch
eckb
ox.
7.Se
lect
Am
plit
ude
(Y-A
xis)
fro
m th
e to
p pu
ll-do
wn
men
u an
d re
peat
st
eps
3–6
so th
e y-
axis
con
figu
rati
on m
atch
es th
e x-
axis
con
figu
rati
on.
8.O
n th
e Sc
ales
pag
e, s
elec
t Am
plit
ude
(Y-A
xis)
.
9.R
emov
e th
e ch
eckm
ark
from
the
Aut
osca
le c
heck
box.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n3-
9Ge
tting
Sta
rted
with
Lab
VIEW
10.
Ent
er -2.5
in th
e M
inim
um te
xt b
ox a
nd 2.5
in th
e M
axim
um te
xt
box.
11.
Clic
k th
e O
K b
utto
n to
sav
e th
e co
nfig
urat
ion
and
clos
e th
e G
raph
P
rope
rtie
s di
alog
box
.
12.
Rep
eat s
teps
1–1
1 to
con
figu
re th
e F
ilter
ed S
igna
l gra
ph in
dica
tor.
The
x-a
xis
and
the
y-ax
is o
n th
e U
nfilt
ered
Sig
nal a
nd F
ilter
ed
Sign
al g
raph
indi
cato
rs c
hang
e to
ref
lect
the
new
con
figu
rati
on.
Anal
yzin
g th
e Am
plitu
de o
f a S
igna
lY
ou c
an u
se th
e A
mpl
itud
e an
d L
evel
Mea
sure
men
ts E
xpre
ss V
I to
anal
yze
the
volt
age
char
acte
rist
ics
of a
sig
nal.
Com
plet
e th
e fo
llow
ing
step
s to
reco
nfig
ure
the
Exp
ress
VI t
o m
easu
re th
e pe
ak-t
o-pe
ak a
mpl
itud
e va
lues
of
the
sign
al.
1.O
n th
e bl
ock
diag
ram
, dou
ble-
clic
k th
e A
mpl
itude
and
Lev
el
Mea
sure
men
ts E
xpre
ss V
I to
dis
play
the
Con
figu
re A
mpl
itud
e an
d L
evel
Mea
sure
men
ts d
ialo
g bo
x.
2.In
the
Am
plit
ude
Mea
sure
men
ts s
ecti
on, r
emov
e th
e ch
eckm
ark
from
the
RM
S ch
eckb
ox.
3.Pl
ace
a ch
eckm
ark
in th
e P
eak
to p
eak
chec
kbox
. Pea
k to
pea
k ap
pear
s in
the
Res
ults
sec
tion
wit
h th
e co
rres
pond
ing
valu
e of
the
mea
sure
men
t.
4.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se
the
Con
figu
re A
mpl
itud
e an
d L
evel
Mea
sure
men
ts d
ialo
g bo
x.
The
RM
S ou
tput
of
the
Am
plit
ude
and
Lev
el M
easu
rem
ents
Exp
ress
V
I ch
ange
s to
ref
lect
the
new
Pea
k to
Pea
k ou
tput
, sho
wn
at le
ft.
You
will
use
the
Pea
k to
Pea
k ou
tput
in a
late
r ex
erci
se.
Cont
rolli
ng th
e Sp
eed
of E
xecu
tion
To
plot
the
poin
ts o
n th
e w
avef
orm
gra
phs
mor
e sl
owly
, you
can
add
a ti
me
dela
y to
the
bloc
k di
agra
m. A
tim
e de
lay
slow
s th
e sp
eed
at w
hich
a V
I ru
ns.
Com
plet
e th
e fo
llow
ing
step
s to
con
trol
the
spee
d at
whi
ch th
e V
I ru
ns.
1.O
n th
e bl
ock
diag
ram
, sea
rch
for
the
Tim
e D
elay
Exp
ress
VI.
2.Pl
ace
the
Tim
e D
elay
Exp
ress
VI
insi
de th
e W
hile
Loo
p. T
he
Con
figu
re T
ime
Del
ay d
ialo
g bo
x ap
pear
s.
3.E
nter
1.000
in th
e T
ime
dela
y (s
econ
ds)
text
box
and
clic
k th
e O
K
butto
n.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
Getti
ng S
tarte
d w
ith L
abVI
EW3-
10ni
.com
4.D
ispl
ay th
e fr
ont p
anel
and
run
the
VI.
The
VI
runs
mor
e sl
owly
.
The
loop
iter
ates
onc
e ev
ery
seco
nd.
5.St
op th
e V
I.
Ano
ther
way
to c
ontr
ol th
e sp
eed
of th
e V
I is
to a
lter
the
rate
of
data
ac
quis
ition
. On
the
bloc
k di
agra
m, d
oubl
e cl
ick
the
Sim
ulat
e Si
gnal
E
xpre
ss V
I to
dis
play
the
Con
figu
re S
imul
ate
Sign
al d
ialo
g bo
x.
Loc
ate
the
Tim
ing
sect
ion
in th
e di
alog
box
. The
Tim
ing
sect
ion
cont
ains
a n
umbe
r of
way
s to
alt
er th
e ra
te o
f da
ta a
cqui
siti
on a
nd th
e sp
eed
at w
hich
a V
I ru
ns.
For
exam
ple,
one
of
the
defa
ult s
etti
ngs
of th
e V
I is
Sim
ulat
e A
cqui
siti
on T
imin
g. T
his
mea
ns th
at th
e V
I m
imic
s th
e ac
quis
itio
n ra
te o
f a
hard
war
e de
vice
. You
can
sel
ect R
un a
s fa
st a
s po
ssib
le to
di
spla
y da
ta m
ore
quic
kly.
In
the
Sam
ples
per
sec
ond
(Hz)
text
box
, th
e de
faul
t val
ue is
100
0, w
hile
the
defa
ult v
alue
in th
e N
umbe
r of
Sa
mpl
es te
xt b
ox is
100
. Thi
s m
eans
that
the
VI
will
out
put 1
00 d
ata
poin
ts s
pann
ing
0.1
seco
nd. Y
ou c
an c
hang
e th
ese
valu
es to
cha
nge
the
amou
nt o
f da
ta th
e V
I di
spla
ys, a
s w
ell a
s th
e ra
te a
t whi
ch th
e V
I di
spla
ys th
e da
ta.
Addi
ng a
War
ning
Lig
htIf
you
wan
t a v
isua
l cue
to in
dica
te w
hen
a va
lue
exce
eds
a sp
ecif
ied
limit,
yo
u ca
n us
e a
war
ning
ligh
t.
Com
plet
e th
e fo
llow
ing
step
s to
add
a w
arni
ng li
ght t
o th
e V
I.
1.D
ispl
ay th
e C
ontr
ols
pale
tte
by r
ight
-cli
ckin
g an
y bl
ank
spac
e in
the
fron
t pan
el w
indo
w.
2.O
n th
e E
xpre
ss p
alet
te, s
elec
t the
LE
Ds
pale
tte.
3.Se
lect
the
roun
d L
ED
indi
cato
r an
d ad
d it
to th
e fr
ont p
anel
toth
e le
ft
of th
e w
avef
orm
gra
phs.
4.D
oubl
e-cl
ick
the
Boo
lean
labe
l abo
ve th
e L
ED
and
ent
er Warning
to
chan
ge th
e la
bel o
f th
e L
ED
.
You
wil
l use
this
LE
D in
a la
ter
exer
cise
to in
dica
te w
hen
a va
lue
has
exce
eded
its
lim
it.
5.Se
lect
File
»Sav
e A
s to
dis
play
the
Save
As
dial
og b
ox.
6.R
ead
the
vari
ous
dial
og b
ox o
ptio
ns. S
elec
t the
Cop
y an
d Su
bsti
tute
co
py f
or o
rigi
nal o
ptio
ns to
cre
ate
a co
py o
f th
e or
igin
al V
I an
d im
med
iate
ly e
dit t
he c
opy.
7.C
lick
the
Con
tinu
e bu
tton
and
sav
e th
e V
I as Warning Light.vi
in
an e
asil
y ac
cess
ible
loca
tion
.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n3-
11Ge
tting
Sta
rted
with
Lab
VIEW
Setti
ng a
War
ning
Lev
el L
imit
To
spec
ify
the
valu
e at
whi
ch y
ou w
ant t
he L
ED
to li
ght,
use
the
Com
pari
son
Exp
ress
VI.
Com
plet
e th
e fo
llow
ing
step
s to
com
pare
the
peak
-to-
peak
val
ue to
a li
mit
yo
u se
t.
1.O
n th
e bl
ock
diag
ram
, sea
rch
for t
he C
ompa
riso
n E
xpre
ss V
I and
pla
ce
it to
the
righ
t of
the
Am
plit
ude
and
Lev
el M
easu
rem
ents
Exp
ress
VI.
T
he C
onfi
gure
Com
pari
son
dial
og b
ox a
ppea
rs.
2.In
the
Com
pare
Con
diti
on s
ectio
n, s
elec
t the
>G
reat
er o
ptio
n.
3.In
the
Com
pari
son
Inpu
ts s
ecti
on, s
elec
t Val
ue a
nd e
nter
2 in
the
Val
ue n
umer
ic c
ontr
ol to
ass
ign
a co
nsta
nt v
alue
at w
hich
you
wan
t the
L
ED
to li
ght.
4.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se
the
Con
figu
re C
ompa
riso
n di
alog
box
.
The
nam
e of
the
Com
pari
son
Exp
ress
VI
chan
ges
to r
efle
ct th
e op
erat
ion
of th
e E
xpre
ss V
I, s
how
n at
left
. Gre
ater
indi
cate
s th
at th
e E
xpre
ss V
I do
es a
gre
ater
than
com
pari
son.
5.W
ire
the
Pea
k to
Pea
k ou
tput
of
the
Am
plitu
de a
nd L
evel
M
easu
rem
ents
Exp
ress
VI
to th
e O
pera
nd 1
inpu
t of
the
Gre
ater
E
xpre
ss V
I.
6.M
ove
the
curs
or o
ver
the
wir
e th
at c
onne
cts
the
Pea
k to
Pea
k ou
tput
to
the
Ope
rand
1 in
put.
7.W
hen
the
Posi
tion
ing
tool
app
ears
, rig
ht-c
lick
the
wir
e th
at c
onne
cts
the
Pea
k to
Pea
k ou
tput
to th
e O
pera
nd 1
inpu
t and
sel
ect C
reat
e»
Num
eric
Ind
icat
or f
rom
the
shor
tcut
men
u.
A P
eak
to P
eak
term
inal
, sho
wn
at le
ft, a
ppea
rs o
n th
e bl
ock
diag
ram
. If
the
Pea
k to
Pea
k te
rmin
al a
ppea
rs to
be
on to
p of
the
wir
es b
etw
een
the
Exp
ress
VIs
, mov
e th
e E
xpre
ss V
Is a
nd P
eak
to P
eak
term
inal
ar
ound
to c
reat
e m
ore
spac
e. F
or e
xam
ple,
mov
e th
e P
eak
to P
eak
term
inal
into
bla
nk s
pace
abo
ve th
e E
xpre
ss V
Is.
Tip
You
als
o ca
n pr
ess
<C
trl>
and
dra
g a
rect
angl
e in
ope
n sp
ace
to a
dd m
ore
wor
king
sp
ace
to th
e fr
ont p
anel
or
bloc
k di
agra
m.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
Getti
ng S
tarte
d w
ith L
abVI
EW3-
12ni
.com
War
ning
the
User
Aft
er y
ou s
peci
fy th
e va
lues
at w
hich
you
wan
t the
LE
D to
ligh
t, yo
u m
ust
wir
e th
e L
ED
to th
e G
reat
er E
xpre
ss V
I.
Com
plet
e th
e fo
llow
ing
step
s to
pro
vide
a v
isua
l cue
whe
n th
e pe
ak-t
o-pe
ak
valu
e of
the
sign
al e
xcee
ds a
spe
cifi
ed li
mit
.
1.In
the
bloc
k di
agra
m w
indo
w, m
ove
the
War
ning
term
inal
to th
e ri
ght
of th
e G
reat
er E
xpre
ss V
I. M
ake
sure
the
War
ning
term
inal
is in
side
th
e W
hile
Loo
p, a
s sh
own
in F
igur
e3-
4.
Figu
re 3
-4.
Bloc
k Di
agra
m o
f the
War
ning
Lig
ht V
I
2.W
ire
the
Res
ult
outp
ut o
f th
e G
reat
er E
xpre
ss V
I to
the
War
ning
te
rmin
al.
The
blo
ck d
iagr
am s
houl
d ap
pear
sim
ilar
to F
igur
e3-
4.
Note
Red
coe
rcio
n do
ts a
ppea
r au
tom
atic
ally
at t
he P
eak
to P
eak
and
War
ning
inpu
t te
rmin
als
to a
lert
you
that
you
wir
ed tw
o di
ffer
ent d
ata
type
s to
geth
er a
nd L
abV
IEW
co
nver
ted
the
valu
e pa
ssed
into
the
node
to a
dif
fere
nt r
epre
sent
atio
n. T
he b
lock
dia
gram
pl
aces
the
coer
cion
dot
s on
the
bord
er o
f the
term
inal
whe
re th
e co
nver
sion
take
s pl
ace.
For
th
is e
xerc
ise,
the
conv
ersi
on d
oes
not a
ffec
t how
the
VI
runs
. Ref
er to
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out c
oerc
ion
dots
.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n3-
13Ge
tting
Sta
rted
with
Lab
VIEW
3.D
ispl
ay th
e fr
ont p
anel
.
A n
umer
ic in
dica
tor
labe
led
Pea
k to
Pea
k ap
pear
s in
the
fron
t pan
el
win
dow
. Thi
s in
dica
tor
disp
lays
the
peak
-to-
peak
val
ue o
f th
e si
gnal
.
4.R
un th
e V
I.
Whe
n th
e pe
ak-t
o-pe
ak v
alue
exc
eeds
2.0
, the
War
ning
indi
cato
r lig
hts.
5.C
lick
the
STO
P b
utto
n to
sto
p th
e V
I.
6.Sa
ve th
e V
I.
Conf
igur
ing
a VI
to S
ave
Data
to a
File
To
stor
e in
form
atio
n ab
out t
he d
ata
a V
I ge
nera
tes,
use
the
Wri
te T
o M
easu
rem
ent F
ile
Exp
ress
VI.
Com
plet
e th
e fo
llow
ing
step
s to
buil
d a
VI
that
sav
es p
eak-
to-p
eak
valu
es
and
othe
r in
form
atio
n to
a L
abV
IEW
dat
a fi
le.
1.Se
arch
for t
he W
rite
To
Mea
sure
men
t File
Exp
ress
VI a
nd a
dd it
to th
e bl
ock
diag
ram
bel
ow a
nd to
the
righ
t of
the
Am
plitu
de a
nd L
evel
M
easu
rem
ents
Exp
ress
VI.
The
Con
figu
re W
rite
To
Mea
sure
men
t F
ile d
ialo
g bo
x ap
pear
s.
The
File
nam
e te
xt b
ox d
ispl
ays
the
full
pat
h to
the
outp
ut f
ile,
test.lvm
. A .lvm
fil
e is
a ta
b-de
limite
d te
xt m
easu
rem
ent f
ile y
ou
can
open
with
a s
prea
dshe
et a
pplic
atio
n or
a te
xt-e
ditin
g ap
plic
atio
n.
Lab
VIE
W s
aves
dat
a w
ith u
p to
six
dig
its o
f pr
ecis
ion
in a
.lvm
fi
le. L
abV
IEW
sav
es th
e .lvm
fil
e in
the
defa
ult LabVIEW Data
di
rect
ory.
Lab
VIE
W in
stal
ls th
e LabVIEW Data
dir
ecto
ry in
the
defa
ult f
ile
dire
ctor
y of
the
oper
atin
g sy
stem
.
Whe
n yo
u w
ant t
o vi
ew th
e da
ta, u
se th
e fi
le p
ath
disp
laye
d in
the
File
nam
e te
xt b
ox to
acc
ess
the test.lvm
fil
e.
2.In
the
Con
figu
re W
rite
to
Mea
sure
men
t F
ile d
ialo
g bo
x, lo
cate
the
If a
file
alr
eady
exi
sts
sect
ion
and
sele
ct th
e A
ppen
d to
file
opt
ion
to
wri
te a
ll th
e da
ta to
the test.lvm
file
with
out e
rasi
ng a
ny e
xist
ing
data
in th
e fi
le.
3.In
the
Segm
ent
Hea
ders
sec
tion
, sel
ect t
he O
ne h
eade
r on
ly o
ptio
n to
cre
ate
only
one
hea
der i
n th
e fi
le to
whi
ch L
abV
IEW
wri
tes
the
data
.
4.E
nter
the
follo
win
g te
xt in
the
File
Des
crip
tion
text
box
: Sample of
peak to peak values
. Lab
VIE
W a
ppen
ds th
e te
xt y
ou e
nter
in th
is
text
box
to th
e he
ader
of
the
file
.
5.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se
the
Con
figu
re W
rite
To
Mea
sure
men
t F
ile d
ialo
g bo
x.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
Getti
ng S
tarte
d w
ith L
abVI
EW3-
14ni
.com
Savi
ng D
ata
to a
File W
hen
you
run
the
VI,
Lab
VIE
W s
aves
the
data
to th
e test.lvm
file
.
Com
plet
e th
e fo
llow
ing
step
s to
gen
erat
e th
e test.lvm
fil
e.
1.O
n th
e bl
ock
diag
ram
, wir
e th
e P
eak
to P
eak
outp
ut o
f the
Am
plit
ude
and
Lev
el M
easu
rem
ents
Exp
ress
VI
to th
e Si
gnal
s in
put o
f th
e W
rite
To
Mea
sure
men
t Fil
e E
xpre
ss V
I.
2.Se
lect
File
»Sav
e A
s an
d sa
ve th
e V
I as
Save Data.vi
in a
n ea
sily
ac
cess
ible
loca
tion
.
3.D
ispl
ay th
e fr
ont p
anel
and
run
the
VI.
4.C
lick
the
fron
t pan
el S
TO
P b
utto
n.
5.To
vie
w th
e da
ta y
ou s
aved
, ope
n th
e test.lvm
file
in th
e LabVIEW
Data
dir
ecto
ry w
ith
a sp
read
shee
t or
text
-edi
ting
app
lica
tion
.
The
file
has
a h
eade
r th
at c
onta
ins
info
rmat
ion
abou
t the
Exp
ress
VI.
6.C
lose
the
file
aft
er y
ou f
inis
h lo
okin
g at
it a
nd r
etur
n to
the
Save
D
ata
VI.
Addi
ng a
But
ton
That
Sto
res
Data
Whe
n Cl
icke
dIf
you
wan
t to
stor
e on
ly c
erta
in d
ata
poin
ts, y
ou c
an c
onfi
gure
the
Wri
te
To
Mea
sure
men
t Fil
e E
xpre
ss V
I to
save
pea
k-to
-pea
k va
lues
onl
y w
hen
a us
er c
lick
s a
butt
on.
Com
plet
e th
e fo
llow
ing
step
s to
add
a b
utto
n to
the
VI
and
conf
igur
e ho
w
the
butto
n re
spon
ds w
hen
a us
er c
licks
it.
1.D
ispl
ay th
e fr
ont p
anel
and
sea
rch
the
Con
trol
s pa
lett
e fo
r a
rock
er
butto
n. S
elec
t one
of
the
rock
er b
utto
ns a
nd p
lace
it to
the
righ
t of
the
wav
efor
m g
raph
s.
2.R
ight
-cli
ck th
e ro
cker
but
ton
and
sele
ct P
rope
rtie
s fr
om th
e sh
ortc
ut
men
u to
dis
play
the
Boo
lean
Pro
pert
ies
dial
og b
ox.
3.C
hang
e th
e la
bel o
f th
e bu
tton
to Write to File
.
4.O
n th
e O
pera
tion
pag
e of
the
Boo
lean
Pro
pert
ies
dial
og b
ox, s
elec
t L
atch
whe
n pr
esse
d fr
om th
e B
utto
n be
havi
or li
st.
Use
the
Ope
rati
on p
age
to s
peci
fy h
ow a
but
ton
beha
ves
whe
n a
user
cl
icks
it. T
o se
e ho
w th
e bu
tton
reac
ts to
a c
lick
, cli
ck th
e bu
tton
in th
e P
revi
ew S
elec
ted
Beh
avio
r se
ctio
n.
5.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se
the
Boo
lean
Pro
pert
ies
dial
og b
ox.
6.Sa
ve th
e V
I.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n3-
15Ge
tting
Sta
rted
with
Lab
VIEW
Savi
ng D
ata
Whe
n Pr
ompt
ed b
y a
User
Com
plet
e th
e fo
llow
ing
step
s to
bui
ld a
VI
that
logs
dat
a to
a f
ile w
hen
the
user
clic
ks a
but
ton
on th
e fr
ont p
anel
.
1.In
the
bloc
k di
agra
m w
indo
w, d
oubl
e-cl
ick
the
Wri
te T
o M
easu
rem
ent
File
Exp
ress
VI
to d
ispl
ay th
e C
onfi
gure
Wri
te T
o M
easu
rem
ent
File
dia
log
box.
2.C
hang
e th
e fi
lena
me test.lvm
in th
e F
ilena
me
text
box
to
Selected Samples.lvm
to s
ave
the
data
to a
dif
fere
nt f
ile.
3.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se
the
Con
figu
re W
rite
To
Mea
sure
men
t F
ile d
ialo
g bo
x.
4.R
ight
-clic
k th
e Si
gnal
s in
put o
f th
e W
rite
To
Mea
sure
men
t File
E
xpre
ss V
I and
sel
ect I
nser
t Inp
ut/O
utpu
t fro
m th
e sh
ortc
ut m
enu
to
inse
rt th
e C
omm
ent
inpu
t.
5.R
ight
-clic
k th
e C
omm
ent
inpu
t of
the
Wri
te T
o M
easu
rem
ent F
ile
Exp
ress
VI a
nd s
elec
t Sel
ect I
nput
/Out
put»
Ena
ble
from
the
shor
tcut
m
enu
to r
epla
ce th
e C
omm
ent
inpu
t wit
h th
e E
nabl
e in
put.
The
inpu
ts a
nd o
utpu
ts o
f an
Exp
ress
VI
appe
ar in
a p
rede
term
ined
or
der w
hen
you
add
new
inpu
ts a
nd o
utpu
ts. T
o se
lect
a s
peci
fic
inpu
t, yo
u m
ight
nee
d to
add
an
inpu
t fir
st, a
nd th
en c
hang
e th
e in
put t
o th
e sp
ecif
ic o
ne y
ou w
ant t
o us
e by
rig
ht-c
lick
ing
the
inpu
t and
sel
ecti
ng
Sele
ct I
nput
/Out
put
from
the
shor
tcut
men
u.
6.M
ove
the
Wri
te t
o F
ile te
rmin
al to
the
left
of
the
Wri
te T
o M
easu
rem
ent F
ile
Exp
ress
VI.
7.W
ire
the
Wri
te t
o F
ile te
rmin
al to
the
Ena
ble
inpu
t of
the
Wri
te T
o M
easu
rem
ent F
ile
Exp
ress
VI.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
Getti
ng S
tarte
d w
ith L
abVI
EW3-
16ni
.com
The
blo
ck d
iagr
am s
houl
d ap
pear
sim
ilar
to F
igur
e3-
5.
Figu
re 3
-5.
Bloc
k Di
agra
m o
f the
Sav
e Da
ta V
I
View
ing
Save
d Da
ta Com
plet
e th
e fo
llow
ing
step
s to
vie
w th
e da
ta th
at y
ou s
ave
to th
e Selected Samples.lvm
fil
e.
1.D
ispl
ay th
e fr
ont p
anel
and
run
the
VI.
Cli
ck th
e W
rite
to F
ile b
utto
n se
vera
l tim
es.
2.C
lick
the
STO
P b
utto
n.
3.O
pen
the Selected Samples.lvm
file
wit
h a
spre
adsh
eet o
r te
xt-e
diti
ng a
ppli
cati
on.
The
Selected Samples.lvm
file
dif
fers
fro
m th
e test.lvm
fil
e.
test.lvm
rec
orde
d al
l the
dat
a ge
nera
ted
by th
e Sa
ve D
ata
VI,
w
here
as Selected Samples.lvm
rec
orde
d da
ta o
nly
whe
n yo
u cl
icke
d th
e W
rite
to
File
but
ton.
4.C
lose
the
file
aft
er y
ou f
inis
h lo
okin
g at
it.
5.Sa
ve a
nd c
lose
the
VI.
Chap
ter 3
Anal
yzin
g an
d Sa
ving
a S
igna
l
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n3-
17Ge
tting
Sta
rted
with
Lab
VIEW
Sum
mar
yT
he f
ollo
win
g to
pics
are
a s
umm
ary
of th
e m
ain
conc
epts
you
lear
ned
in
this
cha
pter
.
Cont
rols
and
Indi
cato
rsY
ou c
an c
onfi
gure
fro
nt p
anel
con
trol
s an
d in
dica
tors
to p
erfo
rm ta
sks
depe
ndin
g on
wha
t you
wan
t a V
I to
do.
In
this
cha
pter
, you
lear
ned
to u
se
cont
rols
and
indi
cato
rs in
the
follo
win
g w
ays:
•Y
ou c
an b
uild
VIs
that
per
form
a ta
sk w
hen
cert
ain
cond
ition
s oc
cur,
such
as
disp
layi
ng a
war
ning
ligh
t whe
n a
valu
e ex
ceed
s a
cert
ain
lim
it.
•Y
ou c
an b
uild
VIs
that
let u
sers
con
trol
whe
n an
Exp
ress
VI
exec
utes
by
usi
ng b
utto
ns a
nd th
e E
nabl
e in
put.
You
can
con
figu
re th
e bu
ttons
to
ope
rate
in o
ne o
f six
way
s us
ing
the
Ope
rati
on p
age
of th
e B
oole
an
Pro
pert
ies
dial
og b
ox.
Filte
ring
Data
The
Filt
er E
xpre
ss V
I pr
oces
ses
sign
als
thro
ugh
filt
ers
and
win
dow
s. Y
ou
can
use
the
Filt
er E
xpre
ss V
I to
rem
ove
nois
e fr
om a
sig
nal.
Savi
ng D
ata
The
Wri
te T
o M
easu
rem
ent F
ile
Exp
ress
VI
save
s da
ta th
at a
VI
gene
rate
s an
d an
alyz
es to
a .lvm
, .tdm
, or .tdms
mea
sure
men
t fil
e. T
he te
xt-b
ased
m
easu
rem
ent f
ile
(.lvm
) is
a ta
b-de
limite
d te
xt f
ile
you
can
open
with
a
spre
adsh
eet a
pplic
atio
n or
a te
xt-e
ditin
g ap
plic
atio
n. L
abV
IEW
sav
es d
ata
with
up
to s
ix d
igit
s of
pre
cisi
on in
a .lvm
fil
e. I
n ad
diti
on to
the
data
an
Exp
ress
VI
gene
rate
s, th
e .lvm
fil
e in
clud
es h
eade
rs th
at c
onta
in
info
rmat
ion
abou
t the
dat
a, s
uch
as th
e da
te a
nd ti
me
Lab
VIE
W g
ener
ated
th
e da
ta. T
he b
inar
y m
easu
rem
ent f
ile
(.tdm
) is
a b
inar
y fi
le th
at c
onta
ins
wav
efor
m d
ata.
Bin
ary .tdm
fil
es p
rovi
de h
ighe
r ac
cura
cy f
or
floa
ting
-poi
nt n
umbe
rs, t
ake
up le
ss s
pace
on
disk
, and
per
form
fast
er th
an
text
-bas
ed m
easu
rem
ent f
iles
(.lvm
). T
he T
DM
Str
eam
ing
file
(.tdms
) is
a
bina
ry f
ile
that
pro
vide
s fa
ster
wri
ting
per
form
ance
than
the .tdm
fil
e fo
rmat
and
all
ows
a si
mpl
er in
terf
ace
for
defi
ning
pro
pert
ies.
Lab
VIE
W in
stal
ls th
e LabVIEW Data
dir
ecto
ry in
the
defa
ult f
ile d
irec
tory
of
the
oper
atin
g sy
stem
to h
elp
you
orga
nize
and
loca
te th
e da
ta f
iles
L
abV
IEW
gen
erat
es. R
efer
to th
e L
abV
IEW
Hel
p fo
r m
ore
info
rmat
ion
abou
t wri
ting
data
to a
nd r
eadi
ng d
ata
from
.lvm
and
.tdm
fil
es.
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n4-
1Ge
tting
Sta
rted
with
Lab
VIEW4
Hard
war
e: A
cqui
ring
Data
and
Co
mm
unic
atin
g w
ith
Inst
rum
ents
(Win
dow
s)
Lab
VIE
W h
as th
e ca
pabi
lity
to c
onne
ct a
nd in
tera
ct w
ith
a la
rge
num
ber o
f ha
rdw
are
devi
ces.
Thi
s ch
apte
r in
trod
uces
you
to tw
o E
xpre
ss V
Is th
at
mak
e ac
quir
ing
data
and
com
mun
icat
ing
with
trad
ition
al, t
hird
-par
ty
inst
rum
ents
eas
ier.
Hard
war
e an
d So
ftwar
e Re
quire
men
tsIn
the
firs
t exe
rcis
e, y
ou u
se th
e D
AQ
Ass
ista
nt E
xpre
ss V
I to
acqu
ire
data
w
ith
a D
AQ
dev
ice.
Thi
s ex
erci
se r
equi
res
data
acq
uisi
tion
har
dwar
e an
d th
at y
ou h
ave
NI-
DA
Qm
x in
stal
led.
Ref
er to
the
NI-
DA
Q R
eadm
e fo
r mor
e in
form
atio
n ab
out p
latf
orm
s su
ppor
ted
by N
I-D
AQ
mx
soft
war
e.
Ref
er to
the
Tak
ing
Mea
sure
men
ts b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
Hel
p fo
r in
form
atio
n ab
out a
cqui
ring
dat
a an
d co
mm
unic
atin
g w
ith
inst
rum
ents
on
all p
latf
orm
s.
Note
With
NI-
DA
Qm
x 7.
4 or
late
r you
can
cre
ate
NI-
DA
Qm
x si
mul
ated
dev
ices
in M
AX
. A
n N
I-D
AQ
mx
sim
ulat
ed d
evic
e is
a s
oftw
are
repl
ica
of a
DA
Q d
evic
e. R
efer
to th
e M
easu
rem
ent &
Aut
omat
ion
Exp
lore
r H
elp
for
NI-
DA
Qm
x fo
r de
taile
d in
stru
ctio
ns o
n cr
eati
ng a
n N
I-D
AQ
mx
sim
ulat
ed d
evic
e th
at y
ou c
an u
se to
com
plet
e th
e fi
rst e
xerc
ise.
In th
e se
cond
exe
rcis
e, y
ou u
se th
e N
I Ins
trum
ent D
rive
r Fin
der t
o fi
nd a
nd
inst
all i
nstr
umen
t dri
vers
. To
use
the
Inst
rum
ent D
rive
r Fi
nder
, you
mus
t ha
ve in
tern
et a
cces
s. In
the
seco
nd e
xerc
ise,
you
als
o us
e th
e In
stru
men
t I/O
A
ssis
tant
Exp
ress
VI
to c
omm
unic
ate
wit
h a
trad
itio
nal,
thir
d-pa
rty
inst
rum
ent.
Thi
s ex
erci
se r
equi
res
an in
stru
men
t and
that
you
hav
e th
e In
stru
men
t I/O
Ass
ista
nt in
stal
led.
Ref
er to
the
Con
trol
ling
Inst
rum
ents
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out c
omm
unic
atin
g w
ith
inst
rum
ents
.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
Getti
ng S
tarte
d w
ith L
abVI
EW4-
2ni
.com
Note
Lab
VIE
W s
uppo
rts
the
DA
Q a
nd I
nstr
umen
t I/O
Ass
ista
nts
used
in th
is c
hapt
er o
n W
indo
ws
only
. The
Ins
trum
ent D
rive
r Fi
nder
is a
vail
able
on
Win
dow
s an
d L
inux
Acqu
iring
a S
igna
l in
NI-D
AQm
xY
ou w
ill u
se th
e D
AQ
Ass
ista
nt E
xpre
ss V
I to
crea
te a
task
in N
I-D
AQ
mx.
N
I-D
AQ
mx
is a
pro
gram
min
g in
terf
ace
you
can
use
to c
omm
unic
ate
wit
h da
ta a
cqui
siti
on d
evic
es. R
efer
to th
e G
etti
ng S
tart
ed w
ith
Lab
VIE
W»
Get
ting
Sta
rted
wit
h D
AQ
»Tak
ing
an N
I-D
AQ
mx
Mea
sure
men
t in
L
abV
IEW
boo
k on
the
Con
tent
s tab
in th
e L
abV
IEW
Hel
p fo
r inf
orm
atio
n ab
out a
dditi
onal
way
s to
cre
ate
NI-
DA
Qm
x ta
sks.
In th
e fo
llow
ing
exer
cise
s, y
ou w
ill c
reat
e an
NI-
DA
Qm
x ta
sk th
at
cont
inuo
usly
take
s a
volta
ge r
eadi
ng a
nd p
lots
the
data
on
a w
avef
orm
gr
aph.
You
can
com
plet
e th
e ex
erci
ses
in th
is c
hapt
er in
app
roxi
mat
ely
30 m
inut
es.
Crea
ting
an N
I-DAQ
mx
Task
In N
I-D
AQ
mx,
a ta
sk is
a c
olle
ctio
n of
one
or
mor
e ch
anne
ls, w
hich
co
ntai
ns ti
min
g, tr
igge
ring
, and
oth
er p
rope
rtie
s. C
once
ptua
lly, a
task
re
pres
ents
a m
easu
rem
ent o
r gen
erat
ion
you
wan
t to
perf
orm
. For
exa
mpl
e,
you
can
crea
te a
task
to m
easu
re te
mpe
ratu
re fr
om o
ne o
r mor
e ch
anne
ls o
n a
DA
Q d
evic
e.
Com
plet
e th
e fo
llow
ing
step
s to
cre
ate
and
conf
igur
e a
task
that
rea
ds a
vo
ltag
e le
vel f
rom
a D
AQ
dev
ice.
1.O
pen
a ne
w, b
lank
VI.
2.O
n th
e bl
ock
diag
ram
, dis
play
the
Fun
ctio
ns p
alet
te a
nd s
elec
t E
xpre
ss»I
nput
to d
ispl
ay th
e In
put
pale
tte.
3.Se
lect
the
DA
Q A
ssis
tant
Exp
ress
VI,
sho
wn
at le
ft, o
n th
e In
put
pale
tte
and
plac
e it
on
the
bloc
k di
agra
m. T
he D
AQ
Ass
ista
nt la
unch
es
and
the
Cre
ate
New
Exp
ress
Tas
k di
alog
box
app
ears
.
4.C
lick
Acq
uire
Sig
nals
»Ana
log
Inpu
t to
dis
play
the
Ana
log
Inpu
t op
tions
.
5.Se
lect
Vol
tage
to c
reat
e a
new
vol
tage
ana
log
inpu
t tas
k.
The
dia
log
box
disp
lays
a li
st o
f ch
anne
ls o
n ea
ch in
stal
led
DA
Q
devi
ce. T
he n
umbe
r of
cha
nnel
s li
sted
dep
ends
on
the
num
ber
of
chan
nels
you
hav
e on
the
DA
Q d
evic
e.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n4-
3Ge
tting
Sta
rted
with
Lab
VIEW
6.In
the
Supp
orte
d P
hysi
cal C
hann
els
list
, sel
ect t
he p
hysi
cal c
hann
el
to w
hich
the
devi
ce c
onne
cts
the
sign
al, s
uch
as a
i0, a
nd th
en c
lick
the
Fin
ish
butt
on. T
he D
AQ
Ass
ista
nt o
pens
a n
ew d
ialo
g bo
x, s
how
n in
Fi
gure
4-1,
that
dis
play
s op
tions
for
con
figu
ring
the
chan
nel y
ou
sele
cted
to c
ompl
ete
a ta
sk.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
Getti
ng S
tarte
d w
ith L
abVI
EW4-
4ni
.com
Figu
re 4
-1.
Conf
igur
ing
a Ta
sk U
sing
the
DAQ
Assi
stan
t
7.In
the
DA
Q A
ssis
tant
dia
log
box
sele
ct th
e C
onfi
gura
tion
tab
and
loca
te th
e V
olta
ge I
nput
Set
up s
ecti
on.
8.L
ocat
e th
e Se
ttin
gs ta
b. I
n th
e Si
gnal
Inp
ut R
ange
sec
tion
ente
r 10
fo
r th
e M
ax v
alue
and
ent
er -10
for
the
Min
val
ue.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n4-
5Ge
tting
Sta
rted
with
Lab
VIEW
9.L
ocat
e th
e T
imin
g Se
ttin
gs s
ecti
on a
t the
bot
tom
of
the
Con
figu
rati
on p
age.
Fro
m th
e A
cqui
siti
on M
ode
pull
-dow
n m
enu,
se
lect
NSa
mpl
es.
10.
Ent
er a
val
ue o
f 1000
in th
e Sa
mpl
es t
o R
ead
text
box
.
11.
Cli
ck th
e O
K b
utto
n to
sav
e th
e cu
rren
t con
figu
rati
on a
nd c
lose
the
DA
Q A
ssis
tant
. Lab
VIE
W b
uild
s th
e V
I.
12.
Save
the
VI
as Read Voltage.vi
in a
n ea
sily
acc
essi
ble
loca
tion.
Grap
hing
Dat
a fro
m a
DAQ
Dev
ice
You
can
use
the
task
you
cre
ated
in th
e pr
evio
us e
xerc
ise
to g
raph
the
data
ac
quir
ed f
rom
a D
AQ
dev
ice.
Com
plet
e th
e fo
llow
ing
step
s to
plo
t the
dat
a fr
om th
e ch
anne
l on
a w
avef
orm
gra
ph a
nd c
hang
e th
e na
me
of th
e si
gnal
.
1.O
n th
e bl
ock
diag
ram
, rig
ht-c
lick
the
data
out
put a
nd s
elec
t Cre
ate»
G
raph
Ind
icat
or f
rom
the
shor
tcut
men
u.
2.D
ispl
ay th
e fr
ont p
anel
and
run
the
VI t
hree
or f
our t
imes
. Obs
erve
the
wav
efor
m g
raph
.
Voltage
app
ears
in th
e pl
ot le
gend
at t
he to
p of
the
wav
efor
m g
raph
.
3.O
n th
e bl
ock
diag
ram
, rig
ht-c
lick
the
DA
Q A
ssis
tant
Exp
ress
VI
and
sele
ct P
rope
rtie
s fr
om th
e sh
ortc
ut m
enu
to o
pen
the
DA
Q A
ssis
tant
.
4.R
ight
-clic
k V
olta
ge in
the
list
of c
hann
els
and
sele
ct R
enam
e fr
om th
e sh
ortc
ut m
enu
to d
ispl
ay th
e R
enam
e a
chan
nel o
r ch
anne
ls d
ialo
g bo
x.
Tip
You
als
o ca
n se
lect
the
nam
e of
the
chan
nel a
nd p
ress
the
<F2
> k
ey to
dis
play
the
Ren
ame
a ch
anne
l or
chan
nels
dia
log
box.
5.In
the
New
Nam
e te
xt b
ox, e
nter
First Voltage Reading
, and
cl
ick
the
OK
but
ton.
6.In
the
DA
Q A
ssis
tant
dia
log
box,
cli
ck th
e O
K b
utto
n to
sav
e th
e cu
rren
t con
figu
rati
on a
nd c
lose
the
DA
Q A
ssis
tant
.
7.D
ispl
ay th
e fr
ont p
anel
and
run
the
VI.
First Voltage Reading
app
ears
in th
e w
avef
orm
gra
ph p
lot
lege
nd.
8.Sa
ve th
e V
I.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
Getti
ng S
tarte
d w
ith L
abVI
EW4-
6ni
.com
Editi
ng a
n NI
-DAQ
mx
Task
You
can
add
a c
hann
el to
the
task
so
you
can
com
pare
two
sepa
rate
vol
tage
re
adin
gs. Y
ou a
lso
can
cust
omiz
e th
e ta
sk to
acq
uire
the
volt
age
read
ings
co
ntin
uous
ly.
Com
plet
e th
e fo
llow
ing
step
s to
add
a n
ew c
hann
el to
the
task
and
acq
uire
da
ta c
ontin
uous
ly.
1.In
the
bloc
k di
agra
m w
indo
w, d
oubl
e-cl
ick
the
DA
Q A
ssis
tant
Exp
ress
V
I to
ope
n th
e D
AQ
Ass
ista
nt.
2.C
lick
the
Add
Cha
nnel
s bu
tton
, sho
wn
at le
ft, a
nd s
elec
t Vol
tage
to
disp
lay
the
Add
Cha
nnel
s T
o T
ask
dial
og b
ox.
3.Se
lect
any
unu
sed
phys
ical
cha
nnel
in th
e Su
ppor
ted
Phy
sica
l C
hann
els
list
, and
cli
ck th
e O
K b
utto
n to
retu
rn to
the
DA
Q A
ssis
tant
.
4.R
enam
e th
e ch
anne
l Second Voltage Reading
.
5.In
the
Tim
ing
Sett
ings
sec
tion
of
the
Con
figu
rati
on p
age,
sel
ect
Con
tinu
ous
Sam
ples
fro
m th
e A
cqui
siti
on M
ode
pull-
dow
n m
enu.
Whe
n yo
u se
t tim
ing
and
trig
geri
ng o
ptio
ns in
the
DA
Q A
ssis
tant
, th
ese
opti
ons
appl
y to
all
the
chan
nels
in th
e li
st o
f ch
anne
ls.
6.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se
the
DA
Q A
ssis
tant
. The
Con
firm
Aut
o L
oop
Cre
atio
n di
alog
box
ap
pear
s.
7.C
lick
the
Yes
but
ton.
Lab
VIE
W p
lace
s a
Whi
le L
oop
arou
nd th
e D
AQ
A
ssis
tant
Exp
ress
VI
and
the
grap
h in
dica
tor
on th
e bl
ock
diag
ram
. A
sto
p bu
tton
appe
ars
wir
ed to
the
stop
inpu
t of
the
DA
Q A
ssis
tant
E
xpre
ss V
I. T
he s
topp
ed o
utpu
t of
the
Exp
ress
VI
is w
ired
to th
e co
ndit
iona
l ter
min
al o
f th
e W
hile
Loo
p. T
he b
lock
dia
gram
sho
uld
appe
ar s
imil
ar to
Fig
ure
4-2.
Figu
re 4
-2.
Bloc
k Di
agra
m o
f the
Rea
d Vo
ltage
VI
If a
n er
ror o
ccur
s or
you
cli
ck th
e st
op b
utto
n w
hile
the
VI
is r
unni
ng,
the
DA
Q A
ssis
tant
Exp
ress
VI
stop
s re
adin
g da
ta a
nd th
e st
oppe
d ou
tput
ret
urns
a T
RU
E v
alue
and
sto
ps th
e W
hile
Loo
p.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n4-
7Ge
tting
Sta
rted
with
Lab
VIEW
Visu
ally
Com
parin
g Tw
o Vo
ltage
Rea
ding
sB
ecau
se y
ou h
ave
two
volt
age
read
ings
dis
play
ed o
n a
grap
h, y
ou c
an
cust
omiz
e th
e pl
ots
to d
istin
guis
h be
twee
n th
e tw
o.
Com
plet
e th
e fo
llow
ing
step
s to
cus
tom
ize
the
plot
col
or o
f the
fron
t pan
el
wav
efor
m g
raph
.
1.E
xpan
d th
e pl
ot le
gend
of
the
wav
efor
m g
raph
to d
ispl
ay tw
o pl
ots.
2.R
un th
e V
I.
Two
plot
s ap
pear
on
the
grap
h an
d th
e pl
ot le
gend
dis
play
s bo
th p
lot
nam
es.
3.C
lick
the
icon
that
is to
the
righ
t of
Fir
st V
olta
ge R
eadi
ng in
the
plot
le
gend
and
sel
ect C
olor
fro
m th
e sh
ortc
ut m
enu.
Usi
ng th
e co
lor
pick
er, s
elec
t a c
olor
, suc
h as
yel
low
, so
the
plot
is e
asy
to r
ead.
4.C
hang
e th
e pl
ot c
olor
of
Seco
nd V
olta
ge R
eadi
ng.
5.St
op th
e V
I.
6.Sa
ve th
e V
I.
7.C
lose
the
VI.
The
Get
ting
Sta
rted
win
dow
ope
ns.
Com
mun
icat
ing
with
an
Inst
rum
ent:
Usin
g In
stru
men
t Dr
iver
s an
d th
e In
stru
men
t I/O
Ass
ista
ntA
n in
stru
men
t dri
ver
is a
set
of
soft
war
e ro
utin
es th
at c
ontr
ol a
pr
ogra
mm
able
inst
rum
ent.
Eac
h ro
utin
e co
rres
pond
s to
a p
rogr
amm
atic
op
erat
ion
such
as
conf
igur
ing,
rea
ding
fro
m, w
ritin
g to
, and
trig
geri
ng th
e in
stru
men
t. In
stru
men
t dri
vers
sim
plif
y in
stru
men
t con
trol
and
red
uce
test
pr
ogra
m d
evel
opm
ent t
ime
by e
lim
inat
ing
the
need
to le
arn
the
prog
ram
min
g pr
otoc
ol f
or e
ach
inst
rum
ent.
Use
an
inst
rum
ent d
rive
r fo
r in
stru
men
t con
trol
whe
n po
ssib
le. N
atio
nal I
nstr
umen
ts p
rovi
des
thou
sand
s of
inst
rum
ent d
rive
rs f
or a
wid
e va
riet
y of
inst
rum
ents
.
In th
e fo
llow
ing
exer
cise
s, y
ou w
ill u
se in
stru
men
t dri
vers
and
the
Inst
rum
ent I
/O A
ssis
tant
to c
omm
unic
ate
wit
h an
inst
rum
ent.
You
mus
t ha
ve in
stru
men
t ins
talle
d to
ful
ly c
ompl
ete
the
follo
win
g ex
erci
ses.
Note
The
se e
xerc
ises
ref
er to
trad
ition
al, t
hird
-par
ty in
stru
men
ts. R
efer
to ni.com/
modularinstruments
for
mor
e in
form
atio
n ab
out c
omm
unic
atin
g w
ith N
Im
odul
ar
inst
rum
ents
.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
Getti
ng S
tarte
d w
ith L
abVI
EW4-
8ni
.com
Getti
ng S
tarte
d w
ith th
e In
stru
men
t Driv
er F
inde
rU
se th
e N
I In
stru
men
t Dri
ver
Find
er to
sea
rch
for
and
inst
all L
abV
IEW
Pl
ug a
nd P
lay
inst
rum
ent d
rive
rs w
itho
ut le
avin
g th
e L
abV
IEW
de
velo
pmen
t env
iron
men
t.
Tip
You
als
o ca
n vi
sit t
he N
I In
stru
men
t Dri
ver
Net
wor
k at
ni.com/idnet
to f
ind
a dr
iver
for
an
inst
rum
ent,
requ
est a
dri
ver
for
an in
stru
men
t, an
d re
ad h
elpf
ul a
rtic
les
and
tuto
rial
s ab
out u
sing
inst
rum
ent d
rive
rs.
Com
plet
e th
e fo
llow
ing
step
s to
laun
ch a
nd c
onfi
gure
the
NI
Inst
rum
ent
Dri
ver
Find
er.
1.Fr
om th
e G
etti
ng S
tart
ed w
indo
w, s
elec
t Fin
d In
stru
men
t D
rive
rs
to la
unch
the
Inst
rum
ent D
rive
r Fi
nder
. You
als
o ca
n la
unch
the
Inst
rum
ent D
rive
r Fi
nder
by
sele
ctin
g H
elp»
Fin
d In
stru
men
t D
rive
rs o
r T
ools
»Ins
trum
enta
tion
»Fin
d In
stru
men
t D
rive
rs.
2.C
lick
the
Log
in b
utto
n to
sig
n-in
usi
ng y
our N
I.co
m p
rofi
le. I
f you
do
not h
ave
an ni.com
pro
file
, ski
p to
ste
p 4.
3.If
you
alr
eady
hav
e an
ni.com
prof
ile, e
nter
you
r em
ail a
ddre
ss a
nd
pass
wor
d an
d cl
ick
the
Log
in b
utto
n.
4.If
you
do
not h
ave
an ni.com
pro
file
, sel
ect t
he N
o, I
nee
d to
cre
ate
a pr
ofile
opt
ion
and
clic
k th
e C
reat
e P
rofi
le b
utto
n. T
his
acti
on
laun
ches
a b
row
ser
win
dow
whe
re y
ou c
an c
reat
e an
ni.com
pro
file
. A
fter
you
cre
ate
a pr
ofile
, ret
urn
to th
e In
stru
men
t Dri
ver
Fin
der
win
dow
and
logi
n w
ith y
our
new
info
rmat
ion.
You
are
now
read
y to
sea
rch
for,
inst
all,
and
use
inst
rum
ent d
rive
rs w
ith
the
Inst
rum
ent D
rive
r Fi
nder
.
Find
ing
and
Inst
allin
g In
stru
men
t Driv
ers
Com
plet
e th
e fo
llow
ing
step
s to
sea
rch
for
and
inst
all a
n in
stru
men
t dri
ver
usin
g th
e In
stru
men
t Dri
ver
Find
er.
1.O
n th
e C
onfi
gure
Sea
rch
page
, cli
ck th
e Sc
an f
or I
nstr
umen
ts
butt
on. T
his
acti
on p
rom
pts
the
NI
Inst
rum
ent D
rive
r Fi
nder
to s
earc
h fo
r co
nnec
ted
inst
rum
ents
. All
res
ults
dis
play
und
er th
e C
onne
cted
In
stru
men
ts f
olde
r in
the
left
-han
d si
deba
r. If
you
do
not c
urre
ntly
ha
ve a
n in
stru
men
t con
nect
ed, t
he In
stru
men
t Dri
ver F
inde
r wil
l ret
urn
a re
sult
that
rea
ds <
no c
onne
cted
inst
rum
ent
dete
cted
>.
2.E
xpan
d th
e C
onne
cted
Ins
trum
ents
fol
der
to d
ispl
ay th
e se
arch
re
sult
s an
d se
lect
an
inst
rum
ent f
rom
the
list
.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n4-
9Ge
tting
Sta
rted
with
Lab
VIEW
3.Se
lect
a m
anuf
actu
rer
from
the
Man
ufac
ture
r pu
ll-do
wn
men
u, a
nd
ente
r an
y ke
ywor
ds in
the
Add
itio
nal K
eyw
ords
sec
tion.
The
n cl
ick
the
Sear
ch b
utto
n.
A li
st o
f av
aila
ble
inst
rum
ent d
rive
rs a
ppea
rs o
n th
e Se
arch
Res
ults
pa
ge. T
he d
rive
r re
sult
for
the
mos
t rec
ent v
ersi
on o
f L
abV
IEW
ap
pear
s fi
rst i
n th
e li
st.
If y
our
sear
ch d
oes
not r
etur
n an
y re
sult
s, a
sid
ebar
wit
h se
arch
tips
ap
pear
s. R
efer
to th
e ID
Net
Web
site
at ni.com/idnet
for
mor
e in
form
atio
n ab
out s
earc
hing
for
inst
rum
ent d
rive
rs.
Note
The
NI
Inst
rum
ent D
rive
r Fi
nder
dis
play
s dr
iver
s on
ly f
or L
abV
IEW
7.0.
or
late
r. If
you
nee
d to
dow
nloa
d an
old
er v
ersi
on o
f an
inst
rum
ent d
rive
r, go
to th
e ID
Net
Web
site
at
ni.com/idnet
to s
earc
h fo
r an
d do
wnl
oad
inst
rum
ent d
rive
rs c
ompa
tibl
e w
ith
olde
r ve
rsio
ns o
f L
abV
IEW
.
4.Se
lect
the
driv
er y
ou w
ant t
o in
stal
l and
then
cli
ck th
e In
stal
l but
ton.
Aft
er th
e dr
iver
dow
nloa
ds s
ucce
ssfu
lly, t
he D
ownl
oad
Succ
ess
win
dow
dis
play
s. T
his
win
dow
con
tain
s op
tion
s fo
r ex
plor
ing
and
usin
g th
e ne
w d
rive
r. A
fter
dow
nloa
ding
, the
new
dri
ver
also
app
ears
in
the
Con
figu
re S
earc
h pa
ge u
nder
the
Inst
alle
d In
stru
men
t Dri
ver
fold
er.
5.C
lose
the
Dow
nloa
d Su
cces
s w
indo
w to
ret
urn
to th
e C
onfi
gure
Se
arch
win
dow
.
Note
You
als
o ca
n cr
eate
you
r ow
n in
stru
men
t dri
vers
. Ref
er to
the
Con
trol
ling
Inst
rum
ents
»Usi
ng I
nstr
umen
t Dri
vers
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out c
reat
ing
inst
rum
ent d
rive
rs.
Usin
g In
stru
men
t Driv
ers
Aft
er in
stal
ling
an
inst
rum
ent d
rive
r, y
ou c
an e
xplo
re e
xam
ple
prog
ram
s to
le
arn
mor
e ab
out u
sing
the
inst
rum
ent d
rive
r.
1.D
oubl
e-cl
ick
the
new
ly in
stal
led
inst
rum
ent d
rive
r in
the
Inst
alle
d In
stru
men
t D
rive
r fo
lder
to d
ispl
ay th
e St
art
Usi
ng I
nstr
umen
t D
rive
r pa
ge.
2.T
he S
tart
Usi
ng I
nstr
umen
t D
rive
r pa
ge a
llow
s yo
u to
exp
lore
and
cu
stom
ize
the
new
dri
ver.
The
foll
owin
g ar
e re
com
men
dati
ons
to h
elp
you
star
t usi
ng th
e ne
w d
rive
r.
•To
vie
w th
e ne
w d
rive
r in
the
Pro
ject
Exp
lore
r w
indo
w, c
lick
the
Ope
n P
roje
ct b
utto
n. I
n th
e P
roje
ct E
xplo
rer
win
dow
, you
can
ex
plor
e th
e V
Is, f
olde
rs, a
nd s
uppl
emen
tal f
iles
that
mak
e up
the
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
Getti
ng S
tarte
d w
ith L
abVI
EW4-
10ni
.com
driv
er. Y
ou a
lso
can
acce
ss th
e dr
iver
rea
dme
file
in th
e P
roje
ct
Exp
lore
r w
indo
w.
•To
vie
w th
e dr
iver
’s p
alet
te, c
lick
the
Ope
n P
alet
te b
utto
n. F
rom
th
e pa
lett
e, y
ou c
an s
elec
t and
add
the
driv
er V
Is to
the
fron
t pan
el
and
the
bloc
k di
agra
m.
•To
vie
w a
n ex
ampl
e pr
ogra
m, d
oubl
e-cl
ick
on th
e li
sted
exa
mpl
e pr
ogra
ms
in th
e E
xam
ples
sec
tion
of t
he S
tart
Usi
ng In
stru
men
t D
rive
r pa
ge.
Note
Not
all
dri
vers
hav
e al
l opt
ions
ava
ilab
le. F
or e
xam
ple,
if a
dri
ver
does
not
hav
e a
proj
ect f
ile,
the
Ope
n P
roje
ct b
utto
n ap
pear
s di
mm
ed. R
efer
to th
e ID
Net
Web
site
at
ni.com/idnet
for
mor
e in
form
atio
n ab
out a
ll in
stru
men
t dri
vers
.
Sele
ctin
g an
Inst
rum
ent U
sing
the
Inst
rum
ent I
/O A
ssis
tant
If a
dri
ver i
s no
t ava
ilab
le fo
r an
inst
rum
ent,
you
can
use
the
Inst
rum
entI
/O
Ass
ista
nt E
xpre
ss V
I to
com
mun
icat
e w
ith
the
inst
rum
ent.
Note
You
mus
t hav
e th
e In
stru
men
t I/O
Ass
ista
nt in
stal
led
to u
se th
e In
stru
men
t I/O
A
ssis
tant
Exp
ress
VI.
You
inst
all t
he I
nstr
umen
t I/O
Ass
ista
nt f
rom
the
Nat
iona
l In
stru
men
ts D
evic
e D
rive
rs C
D.
Com
plet
e th
e fo
llow
ing
step
s to
use
the
Inst
rum
ent I
/O A
ssis
tant
Exp
ress
V
I to
sel
ect a
n in
stru
men
t.
1.T
urn
on th
e in
stru
men
t you
wan
t to
use.
The
inst
rum
ent m
ust b
e po
wer
ed o
n to
use
the
Inst
rum
ent I
/O A
ssis
tant
Exp
ress
VI.
2.O
pen
a ne
w V
I an
d di
spla
y th
e fr
ont p
anel
win
dow
.
3.Fr
om th
e In
put p
alet
te, s
elec
t the
Inst
rum
ent I
/O A
ssis
tant
Exp
ress
VI
and
add
it to
the
bloc
k di
agra
m. T
he I
nstr
umen
t I/O
Ass
ista
nt d
ialo
g bo
x ap
pear
s.
4.If
the
help
is n
ot v
isib
le to
the
righ
t of
the
dial
og b
ox, c
lick
the
Show
H
elp
butt
on, s
how
n at
left
, in
the
uppe
r rig
ht c
orne
r of t
he I
nstr
umen
t I/
O A
ssis
tant
dia
log
box.
The
hel
p ap
pear
s to
the
righ
t of
the
dial
og b
ox. T
he to
p he
lp w
indo
w
cont
ains
how
-to
info
rmat
ion
abou
t usi
ng th
e In
stru
men
t I/O
Ass
ista
nt.
The
bot
tom
hel
p w
indo
w p
rovi
des
cont
ext-
sens
itiv
e he
lp a
bout
co
mpo
nent
s in
the
dial
og b
ox.
5.C
lick
the
Sele
ct I
nstr
umen
t li
nk in
the
top
help
win
dow
and
fol
low
th
e in
stru
ctio
ns in
the
help
win
dow
to s
elec
t the
inst
rum
ent w
ith w
hich
yo
u w
ant t
o co
mm
unic
ate.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n4-
11Ge
tting
Sta
rted
with
Lab
VIEW
6.If
nec
essa
ry, c
onfi
gure
the
prop
erti
es o
f th
e in
stru
men
t.
7.If
you
wan
t to
min
imiz
e th
e he
lp w
indo
w, c
lick
the
Hid
e H
elp
butt
on,
show
n at
left
, in
the
uppe
r ri
ght c
orne
r of
the
Inst
rum
ent
I/O
A
ssis
tant
dia
log
box.
Acqu
iring
and
Par
sing
Info
rmat
ion
for a
n In
stru
men
tA
fter
you
sel
ect t
he in
stru
men
t, yo
u ca
n se
nd c
omm
ands
to th
e in
stru
men
t to
ret
riev
e da
ta. I
n th
is e
xerc
ise,
you
will
lear
n to
use
the
Inst
rum
ent I
/O
Ass
ista
nt E
xpre
ss V
I to
acqu
ire
and
pars
e id
entif
icat
ion
info
rmat
ion
for a
n in
stru
men
t.
Com
plet
e th
e fo
llow
ing
step
s to
com
mun
icat
e w
ith th
e in
stru
men
t.
1.In
the
Inst
rum
ent
I/O
Ass
ista
nt d
ialo
g bo
x, c
lick
the
Add
Ste
p bu
tton
and
cli
ck th
e Q
uery
and
Par
se s
tep.
2.E
nter
*IDN?
in th
e E
nter
a c
omm
and
text
box
.
*IDN?
is a
que
ry th
at m
ost i
nstr
umen
ts r
ecog
nize
. The
res
pons
e is
an
iden
tifi
cati
on n
umbe
r st
ring
that
des
crib
es th
e in
stru
men
t. If
the
inst
rum
ent d
oes
not a
ccep
t thi
s co
mm
and,
ref
er to
the
refe
renc
e m
anua
l for
the
inst
rum
ent f
or a
list
of
com
man
ds th
e in
stru
men
t doe
s ac
cept
.
3.C
lick
the
Run
thi
s st
ep b
utto
n sh
own
at le
ft.
The
Ins
trum
ent I
/O A
ssis
tant
sen
ds th
e co
mm
and
to th
e in
stru
men
t, an
d th
e in
stru
men
t ret
urns
its
iden
tific
atio
n in
form
atio
n.
4.Se
lect
ASC
II o
nly
from
the
pull
-dow
n m
enu
belo
w th
e B
yte
inde
x co
lum
n of
the
resp
onse
win
dow
to p
arse
the
inst
rum
ent n
ame
as a
n A
SC
II s
trin
g. Y
ou a
lso
can
use
the
Inst
rum
ent I
/O A
ssis
tant
to p
arse
A
SCII
num
bers
and
bin
ary
data
.
5.C
lick
the
Par
sing
hel
p bu
tton,
sho
wn
at le
ft, i
n th
e In
stru
men
t I/
O
Ass
ista
nt d
ialo
g bo
x to
dis
play
info
rmat
ion
abou
t par
sing
dat
a.
6.In
the
ASC
II r
epre
sent
atio
n co
lum
n of
the
resp
onse
win
dow
, cli
ck
the
valu
e yo
u w
ant t
o pa
rse.
7.E
nter
a n
ame
for
the
toke
n, o
r pa
rsed
dat
a se
lect
ion,
in th
e T
oken
na
me
text
box
.
The
nam
e th
at y
ou e
nter
ed in
the
Tok
en n
ame
text
box
is th
e ou
tput
of
the
Inst
rum
ent I
/O A
ssis
tant
Exp
ress
VI,
sho
wn
at le
ft.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
Getti
ng S
tarte
d w
ith L
abVI
EW4-
12ni
.com
Wiri
ng a
Com
man
d to
an
Inst
rum
ent
Aft
er y
ou a
cqui
re d
ata
from
the
inst
rum
ent,
you
can
add
an in
put p
aram
eter
to
an
inst
rum
ent c
omm
and.
The
par
amet
er b
ecom
es a
n in
put t
o th
e V
I or
fu
nctio
n.
Com
plet
e th
e fo
llow
ing
step
s to
add
a p
aram
eter
to a
com
man
d.
1.C
lick
the
Add
Ste
p bu
tton
and
clic
k th
e W
rite
ste
p.
2.E
nter
*IDN?
in th
e E
nter
a c
omm
and
text
box
.
3.H
ighl
ight
the
com
man
d in
the
Ent
er a
com
man
d te
xt b
ox a
nd c
lick
the
Add
par
amet
er b
utto
n to
add
a p
aram
eter
to th
e co
mm
and.
4.E
nter
a d
efau
lt va
lue
for
the
para
met
er in
the
Tes
t va
lue
text
box
.
5.E
nter
a n
ame
for
the
para
met
er in
the
Par
amet
er n
ame
text
box
. You
us
e th
is n
ame
to r
efer
ence
the
para
met
er in
the
appl
icat
ion.
6.C
lick
the
OK
but
ton
to s
ave
the
curr
ent c
onfi
gura
tion
and
clo
se th
e In
stru
men
t I/
O A
ssis
tant
dia
log
box.
Sum
mar
yT
he f
ollo
win
g to
pics
are
a s
umm
ary
of th
e m
ain
conc
epts
you
lear
ned
in
this
cha
pter
.
DAQ
Assi
stan
t Exp
ress
VI
You
can
use
the
DA
Q A
ssis
tant
Exp
ress
VI
to in
tera
ctiv
ely
buil
d m
easu
rem
ent c
hann
els
or ta
sks.
Add
the
DA
Q A
ssis
tant
Exp
ress
VI
to th
e bl
ock
diag
ram
to c
onfi
gure
ch
anne
ls a
nd ta
sks
for
use
wit
h N
I-D
AQ
mx
for
data
acq
uisi
tion
. N
I-D
AQ
mx
is a
pro
gram
min
g in
terf
ace
you
can
use
to c
omm
unic
ate
wit
h da
ta a
cqui
siti
on d
evic
es. Y
ou c
an u
se th
e D
AQ
Ass
ista
nt E
xpre
ss V
I to
co
ntro
l dev
ices
sup
port
ed b
y N
I-D
AQ
mx.
Ref
er to
the
Get
ting
Sta
rted
wit
h L
abV
IEW
»Get
ting
Sta
rted
wit
h D
AQ
»Tak
ing
an N
I-D
AQ
mx
Mea
sure
men
t in
Lab
VIE
W b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
Hel
p fo
r in
form
atio
n ab
out t
he D
AQ
A
ssis
tant
.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n4-
13Ge
tting
Sta
rted
with
Lab
VIEW
Ref
er to
the
NI-
DA
Q R
eadm
e fo
r in
form
atio
n ab
out d
evic
es s
uppo
rted
by
NI-
DA
Qm
x. I
f N
I-D
AQ
mx
does
not
sup
port
the
devi
ce y
ou w
ant t
o us
e,
refe
r to
the
Tak
ing
Mea
sure
men
ts b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
Hel
p fo
r in
form
atio
n ab
out u
sing
Tra
ditio
nal N
I-D
AQ
(L
egac
y)
for
data
acq
uisi
tion.
Task
s in
NI-D
AQm
x In N
I-D
AQ
mx,
a ta
sk is
a c
olle
ctio
n of
one
or
mor
e vi
rtua
l cha
nnel
s w
ith
timin
g, tr
igge
ring
, and
oth
er p
rope
rtie
s. C
once
ptua
lly, a
task
rep
rese
nts
a m
easu
rem
ent o
r ge
nera
tion
you
wan
t to
perf
orm
.
For e
xam
ple,
you
can
con
figur
e a
colle
ctio
n of
cha
nnel
s fo
r ana
log
inpu
t op
erat
ions
. Aft
er y
ou c
reat
e a
task
, you
can
acc
ess
the
sing
le ta
sk in
stea
d of
co
nfig
urin
g th
e ch
anne
ls in
divi
dual
ly to
per
form
ana
log
inpu
t ope
ratio
ns. A
fter
yo
u cr
eate
a ta
sk, y
ou c
an a
dd o
r rem
ove
chan
nels
from
that
task
.
Ref
er to
the
Tak
ing
Mea
sure
men
ts b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
Hel
p fo
r m
ore
info
rmat
ion
abou
t cha
nnel
s an
d ta
sks.
Inst
rum
ent D
river
s Use
the
NI
Inst
rum
ent D
rive
r Fi
nder
to s
earc
h fo
r an
d in
stal
l Lab
VIE
W
Plug
and
Pla
y in
stru
men
t dri
vers
wit
hout
leav
ing
the
Lab
VIE
W
deve
lopm
ent e
nvir
onm
ent.
An
inst
rum
ent d
rive
r is
a s
et o
f so
ftw
are
rout
ines
that
con
trol
a
prog
ram
mab
le in
stru
men
t. E
ach
rout
ine
corr
espo
nds
to a
pro
gram
mat
ic
oper
atio
n su
ch a
s co
nfig
urin
g, r
eadi
ng f
rom
, wri
ting
to, a
nd tr
igge
ring
the
inst
rum
ent.
Use
an
inst
rum
ent d
rive
r for
inst
rum
ent c
ontr
ol w
hen
poss
ible
. N
atio
nal I
nstr
umen
ts p
rovi
des
thou
sand
s of
inst
rum
ent d
rive
rs f
or a
wid
e va
riet
y of
inst
rum
ents
.
Ref
er to
the
Con
trol
ling
Inst
rum
ents
»Usi
ng I
nstr
umen
t D
rive
rs b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
Hel
p fo
r m
ore
info
rmat
ion
abou
t the
In
stru
men
t Dri
ver
Find
er.
You
als
o ca
n vi
sit t
he N
I In
stru
men
t Dri
ver
Net
wor
k at
ni.com/idnet
to
find
a d
rive
r fo
r an
inst
rum
ent,
or y
ou c
an c
reat
e yo
ur o
wn
inst
rum
ent
driv
ers.
Ref
er to
the
Con
trol
ling
Inst
rum
ents
»Usi
ng In
stru
men
t Dri
vers
bo
ok o
n th
e C
onte
nts t
ab in
the
Lab
VIE
W H
elp
for m
ore
info
rmat
ion
abou
t cr
eati
ng in
stru
men
t dri
vers
.
Chap
ter 4
Hard
war
e: A
cqui
ring
Data
and
Com
mun
icat
ing
with
Inst
rum
ents
(Win
dow
s)
Getti
ng S
tarte
d w
ith L
abVI
EW4-
14ni
.com
Inst
rum
ent I
/O A
ssis
tant
Exp
ress
VI
If a
dri
ver i
s no
t ava
ilab
le fo
r an
inst
rum
ent,
you
can
use
the
Inst
rum
entI
/O
Ass
ista
nt E
xpre
ss V
I to
com
mun
icat
e w
ith
the
inst
rum
ent.
You
can
use
the
Inst
rum
ent I
/O A
ssis
tant
to c
omm
unic
ate
wit
h m
essa
ge-b
ased
inst
rum
ents
an
d gr
aphi
call
y pa
rse
the
resp
onse
. Sta
rt th
e In
stru
men
tI/O
Ass
ista
nt b
y ad
ding
the
Inst
rum
entI
/O A
ssis
tant
Exp
ress
VI t
o th
e bl
ock
diag
ram
or b
y do
uble
-clic
king
the
Inst
rum
entI
/O A
ssis
tant
Exp
ress
VI i
con
on th
e bl
ock
diag
ram
.
Ref
er to
the
Inst
rum
ent I
/O A
ssis
tant
Hel
p fo
r in
form
atio
n ab
out
com
mun
icat
ing
wit
h an
ext
erna
l dev
ice.
Dis
play
the
Inst
rum
ent I
/O
Ass
ista
nt H
elp
by c
licki
ng th
e Sh
ow H
elp
butt
on in
the
Inst
rum
ent
I/O
A
ssis
tant
dia
log
box.
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n5-
1Ge
tting
Sta
rted
with
Lab
VIEW5
Usin
g Ot
her L
abVI
EW F
eatu
res
The
pre
viou
s ch
apte
rs in
this
man
ual i
ntro
duce
you
to m
ost o
f th
e L
abV
IEW
fea
ture
s yo
u ne
ed to
bui
ld c
omm
on m
easu
rem
ent a
pplic
atio
ns.
As
you
fam
ilia
rize
you
rsel
f w
ith
the
Lab
VIE
W e
nvir
onm
ent,
you
mig
ht
find
that
you
nee
d to
enh
ance
VIs
or t
hat y
ou n
eed
mor
e fi
ne-t
uned
con
trol
of
the
proc
esse
s th
e V
Is p
erfo
rm. T
his
chap
ter
intr
oduc
es y
ou to
som
e of
th
e co
ncep
ts y
ou s
houl
d be
fam
ilia
r wit
h as
you
sta
rt u
sing
oth
er L
abV
IEW
fe
atur
es. R
efer
to th
e F
unda
men
tals
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out t
hese
con
cept
s. T
he C
once
pts
book
s co
ntai
n in
form
atio
n ab
out L
abV
IEW
pro
gram
min
g co
ncep
ts, a
nd
the
How
-To
book
s co
ntai
n st
ep-b
y-st
ep in
stru
ctio
ns f
or u
sing
Lab
VIE
W.
All C
ontro
ls a
nd In
dica
tors
The
con
trol
s an
d in
dica
tors
loca
ted
on th
e E
xpre
ss s
ubpa
lett
e of
the
Con
trol
s pa
lett
e ar
e a
subs
et o
f th
e co
mpl
ete
set o
f bu
ilt-
in c
ontr
ols
and
indi
cato
rs a
vail
able
in L
abV
IEW
. On
othe
r sub
pale
ttes
you
can
find
all
the
cont
rols
and
indi
cato
rs th
at y
ou c
an u
se to
cre
ate
the
fron
t pan
el. H
owev
er,
subp
alet
tes
othe
r th
an th
e E
xpre
ss s
ubpa
lett
e ca
tego
rize
con
trol
s an
d in
dica
tors
by
func
tiona
lity
inst
ead
of h
avin
g a
subp
alet
te fo
r con
trol
s an
d a
subp
alet
te f
or in
dica
tors
.
For
exam
ple,
the
top
leve
l of
the
Exp
ress
sub
pale
tte
has
a N
umer
ic
Con
trol
s sub
pale
tte
and
a N
umer
ic In
dica
tors
subp
alet
te. O
n th
e M
oder
n an
d C
lass
ic s
ubpa
lett
es, t
hese
con
trol
s an
d in
dica
tors
are
loca
ted
on th
e N
umer
ic s
ubpa
lett
e be
caus
e th
ey a
re a
ll n
umer
ic o
bjec
ts.
Cli
ck th
e V
iew
but
ton
on th
e pi
nned
Con
trol
s pa
lett
e an
d se
lect
Cha
nge
Vis
ible
Cat
egor
ies
from
the
shor
tcut
men
u to
dis
play
the
Cha
nge
Vis
ible
C
ateg
orie
s di
alog
box
. The
n pl
ace
chec
kmar
ks in
the
chec
kbox
es n
ext t
o th
e ca
tego
ries
you
wan
t to
view
on
the
Con
trol
s pa
lett
e.
Ref
er to
the
Fun
dam
enta
ls»B
uild
ing
the
Fro
nt P
anel
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out u
sing
the
com
plet
e se
t of
built
-in
cont
rols
and
indi
cato
rs a
vaila
ble
in L
abV
IEW
.
Chap
ter 5
Usin
g Ot
her L
abVI
EW F
eatu
res
Getti
ng S
tarte
d w
ith L
abVI
EW5-
2ni
.com
All V
Is a
nd F
unct
ions
The
Exp
ress
VIs
and
str
uctu
res
loca
ted
on th
e E
xpre
ss s
ubpa
lette
of
the
Fun
ctio
ns p
alet
te a
re a
sm
all s
ubse
t of
the
com
plet
e se
t of
buil
t-in
VIs
, fu
ncti
ons,
and
str
uctu
res
avai
labl
e in
Lab
VIE
W.
Clic
k th
e V
iew
but
ton
on th
e pi
nned
Fun
ctio
ns p
alet
te a
nd s
elec
t Cha
nge
Vis
ible
Cat
egor
ies
from
the
shor
tcut
men
u to
dis
play
the
Cha
nge
Vis
ible
C
ateg
orie
s di
alog
box
. The
n pl
ace
chec
kmar
ks in
the
chec
kbox
es n
ext t
o th
e ca
tego
ries
you
wan
t to
view
on
the
Fun
ctio
ns p
alet
te.
Lab
VIE
W u
ses
colo
red
icon
s to
dis
ting
uish
bet
wee
n fu
ncti
ons,
VIs
, and
E
xpre
ss V
Is. I
cons
for f
unct
ions
hav
e pa
le y
ello
w b
ackg
roun
ds, m
ost i
cons
fo
r V
Is h
ave
whi
te b
ackg
roun
ds, a
nd ic
ons
for
Exp
ress
VIs
app
ear
surr
ound
ed b
y pa
le b
lue
fiel
ds.
Exp
ress
VIs
app
ear
on th
e bl
ock
diag
ram
as
expa
ndab
le n
odes
with
icon
s su
rrou
nded
by
a bl
ue fi
eld.
Unl
ike
Exp
ress
VIs
, mos
t fun
ctio
ns a
nd V
Is o
n th
e bl
ock
diag
ram
app
ear
as ic
ons
rath
er th
an e
xpan
dabl
e no
des.
VIs
You
can
use
an
exis
ting
VI
or a
VI
you
crea
te a
s a
subV
I. W
hen
you
plac
e a
VI
on th
e bl
ock
diag
ram
, the
VI
is a
sub
VI.
Whe
n yo
u do
uble
-cli
ck a
su
bVI,
its
fron
t pan
el a
ppea
rs, r
athe
r th
an a
dia
log
box
in w
hich
you
can
co
nfig
ure
opti
ons.
The
icon
for
a V
I ap
pear
s in
the
uppe
r ri
ght c
orne
r of
the
fron
t pan
el a
nd
bloc
k di
agra
m. T
his
icon
is th
e sa
me
as th
e ic
on th
at a
ppea
rs w
hen
you
plac
e th
e V
I on
the
bloc
k di
agra
m. Y
ou c
an u
se th
e de
faul
t ico
n or
cre
ate
a cu
stom
icon
usi
ng th
e Ic
on E
dito
r.
Ref
er to
the
Fun
dam
enta
ls»C
reat
ing
VIs
and
Sub
VIs
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out c
reat
ing
VIs
, con
figu
ring
them
as
subV
Is, a
nd c
reat
ing
icon
s.
You
als
o ca
n sa
ve th
e co
nfig
urat
ion
of a
n E
xpre
ss V
I as
a s
ubV
I. R
efer
to
the
Fun
dam
enta
ls»B
uild
ing
the
Blo
ck D
iagr
am b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
Hel
p fo
r mor
e in
form
atio
n ab
out c
reat
ing
subV
Is fr
om
Exp
ress
VIs
.
Chap
ter 5
Usin
g Ot
her L
abVI
EW F
eatu
res
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n5-
3Ge
tting
Sta
rted
with
Lab
VIEW
Func
tions
Func
tion
s ar
e th
e fu
ndam
enta
l ope
rati
ng e
lem
ents
of
Lab
VIE
W. U
nlik
e V
Is, f
unct
ions
do
not h
ave
fron
t pan
els
or b
lock
dia
gram
s. F
unct
ions
pr
ovid
e th
e ba
sic
buil
ding
blo
cks
for
prog
ram
min
g a
VI,
inte
rfac
ing
wit
h ha
rdw
are
and
soft
war
e, a
nd p
erfo
rmin
g ot
her e
ssen
tial
task
s in
Lab
VIE
W.
Ref
er to
the
Fun
dam
enta
ls»B
uild
ing
the
Blo
ck D
iagr
am b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
Hel
p fo
r m
ore
info
rmat
ion
abou
t fun
ctio
ns.
Data
Typ
esO
n th
e bl
ock
diag
ram
of
a V
I, th
e te
rmin
als
for
the
fron
t pan
el o
bjec
ts a
re
diff
eren
t col
ors.
The
col
or a
nd s
ymbo
l of
a te
rmin
al in
dica
te th
e da
ta ty
pe
of th
e co
rres
pond
ing
cont
rol o
r in
dica
tor.
Col
ors
also
indi
cate
the
data
ty
pes
of w
ires
, inp
uts,
and
out
puts
. The
col
or o
f in
puts
and
out
puts
of
Exp
ress
VIs
indi
cate
wha
t typ
e of
dat
a th
e in
put o
r ou
tput
acc
epts
or
retu
rns.
Dat
a ty
pes
indi
cate
whi
ch o
bjec
ts, i
nput
s, a
nd o
utpu
ts y
ou c
an w
ire
toge
ther
. For
exa
mpl
e, a
sw
itch
has
a g
reen
bor
der,
so y
ou c
an w
ire
a sw
itch
to
any
Exp
ress
VI
inpu
t with
a g
reen
labe
l. A
kno
b ha
s an
ora
nge
bord
er,
so y
ou c
an w
ire
a kn
ob to
any
Exp
ress
VI
inpu
t with
an
oran
ge la
bel.
How
ever
, you
can
not w
ire
a kn
ob to
an
inpu
t with
a g
reen
labe
l. T
he w
ires
yo
u cr
eate
are
the
sam
e co
lor
as th
e te
rmin
al.
Exp
ress
VIs
gen
erat
e an
d ac
quir
e da
ta u
sing
the
dyna
mic
dat
a ty
pe. T
he
dyna
mic
dat
a ty
pe a
ppea
rs a
s a
dark
blu
e te
rmin
al, s
how
n at
left
. Mos
t E
xpre
ss V
Is a
ccep
t or
retu
rn d
ynam
ic d
ata.
You
can
wir
e dy
nam
ic d
ata
to
any
indi
cato
r or
inpu
t tha
t acc
epts
num
eric
, wav
efor
m, o
r B
oole
an d
ata.
W
ire
dyna
mic
dat
a to
an
indi
cato
r th
at c
an b
est p
rese
nt th
e da
ta. S
uch
indi
cato
rs in
clud
e gr
aphs
, cha
rts,
and
num
eric
indi
cato
rs.
Mos
t oth
er V
Is a
nd fu
ncti
ons
in L
abV
IEW
do
not a
ccep
t dyn
amic
dat
a. T
o us
e a
buil
t-in
VI
or f
unct
ion
to a
naly
ze o
r pr
oces
s dy
nam
ic d
ata,
you
mus
t co
nver
t the
dyn
amic
dat
a to
num
eric
, Boo
lean
, wav
efor
m, o
r ar
ray
data
.
Use
the
Con
vert
fro
m D
ynam
ic D
ata
Exp
ress
VI
to c
onve
rt d
ynam
ic d
ata
to n
umer
ic, B
oole
an, w
avef
orm
, and
arr
ay d
ata
for
use
wit
h ot
her
VIs
and
fu
ncti
ons.
Whe
n yo
u w
ire
dyna
mic
dat
a to
an
arra
y in
dica
tor,
Lab
VIE
W
inse
rts
the
Con
vert
fro
m D
ynam
ic D
ata
Exp
ress
VI
on th
e bl
ock
diag
ram
.
Use
the
Con
vert
to D
ynam
ic D
ata
Exp
ress
VI t
o co
nver
t num
eric
, Boo
lean
, w
avef
orm
, and
arr
ay d
ata
to d
ynam
ic d
ata
for
use
with
Exp
ress
VIs
.
Ref
er to
the
Fun
dam
enta
ls»B
uild
ing
the
Blo
ck D
iagr
am b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
Hel
p fo
r m
ore
info
rmat
ion
abou
t dat
a ty
pes.
Chap
ter 5
Usin
g Ot
her L
abVI
EW F
eatu
res
Getti
ng S
tarte
d w
ith L
abVI
EW5-
4ni
.com
Whe
n to
Use
Oth
er L
abVI
EW F
eatu
res
The
Exp
ress
VIs
, str
uctu
res,
and
con
trol
s an
d in
dica
tors
loca
ted
on th
e E
xpre
ss s
ubpa
lett
es o
f th
e C
ontr
ols
and
Fun
ctio
ns p
alet
tes
prov
ide
the
func
tion
alit
y yo
u ne
ed to
bui
ld c
omm
on m
easu
rem
ent a
ppli
cati
ons.
The
fo
llow
ing
list d
escr
ibes
the
appl
icat
ions
that
req
uire
you
to u
se th
e V
Is,
func
tion
s, s
truc
ture
s, c
ontr
ols,
and
indi
cato
rs lo
cate
d on
sub
pale
ttes
oth
er
than
the
Exp
ress
sub
pale
tte.
•P
rogr
amm
atic
ally
con
trol
pro
pert
ies
and
met
hods
for
the
L
abV
IEW
env
iron
men
t, V
Is, a
nd c
ontr
ols
and
indi
cato
rs—
You
ca
n co
ntro
l pro
gram
mat
ical
ly h
ow a
VI
beha
ves
whe
n it
run
s, s
et th
e ap
pear
ance
of
a co
ntro
l or
indi
cato
r, or
con
trol
how
the
Lab
VIE
W
envi
ronm
ent b
ehav
es. R
efer
to th
e F
unda
men
tals
»P
rogr
amm
atic
ally
Con
trol
ling
VIs
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out t
hese
fea
ture
s.
•C
all c
ode
wri
tten
in te
xt-b
ased
lang
uage
s—Y
ou c
an u
se L
abV
IEW
to
com
mun
icat
e w
ith a
ppli
catio
ns w
ritte
n in
a te
xt-b
ased
pro
gram
min
g la
ngua
ge, s
uch
as C
or
C+
+. R
efer
to th
e F
unda
men
tals
»Cal
ling
Cod
e W
ritt
en in
Tex
t-B
ased
Pro
gram
min
g L
angu
ages
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out t
hese
fe
atur
es.
•C
omm
unic
ate
wit
h V
Is a
cros
s a
netw
ork—
You
can
cal
l a V
I th
at
resi
des
on a
noth
er c
ompu
ter
runn
ing
Lab
VIE
W. R
efer
to th
e F
unda
men
tals
»Net
wor
king
in L
abV
IEW
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out t
hese
fea
ture
s.
•Sh
are
data
wit
hin
an a
pplic
atio
n or
acr
oss
a ne
twor
k—Y
ou c
an
crea
te c
onfi
gure
d so
ftw
are
item
s ca
lled
sha
red
vari
able
s to
sha
re d
ata
amon
g V
Is o
r bet
wee
n lo
cati
ons
on th
e bl
ock
diag
ram
that
you
can
not
conn
ect w
ith w
ires
. Ref
er to
the
Fun
dam
enta
ls»N
etw
orki
ng in
L
abV
IEW
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out t
hese
fea
ture
s.
•P
ublis
h V
Is o
n th
e W
eb—
You
can
pub
lish
the
fron
t pan
el o
f an
y V
I on
the
Web
, whe
re u
sers
can
inte
ract
wit
h th
e fr
ont p
anel
. Ref
er to
the
Fun
dam
enta
ls»N
etw
orki
ng in
Lab
VIE
W b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
Hel
p fo
r m
ore
info
rmat
ion
abou
t the
se f
eatu
res.
•Sa
ve d
ata
to a
var
iety
of
file
for
mat
s—In
add
ition
to th
e te
xt-b
ased
m
easu
rem
ent f
ile
form
at, y
ou c
an c
reat
e fi
les
that
oth
er a
ppli
cati
ons
can
use,
suc
h as
text
fil
es a
nd s
prea
dshe
et f
iles
. Ref
er to
the
Fun
dam
enta
ls»F
ile I
/O b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
H
elp
for
mor
e in
form
atio
n ab
out t
hese
fea
ture
s.
Chap
ter 5
Usin
g Ot
her L
abVI
EW F
eatu
res
© N
atio
nal I
nstru
men
ts C
orpo
ratio
n5-
5Ge
tting
Sta
rted
with
Lab
VIEW
•C
usto
miz
e m
enus
—Y
ou c
an c
onfi
gure
whi
ch m
enu
item
s ap
pear
w
hen
a us
er ru
ns a
VI.
You
als
o ca
n cr
eate
cus
tom
men
us. R
efer
to th
e F
unda
men
tals
»Cre
atin
g V
Is a
nd S
ubV
Is b
ook
on th
e C
onte
nts
tab
in th
e L
abV
IEW
Hel
p fo
r m
ore
info
rmat
ion
abou
t the
se f
eatu
res.
•U
se L
abV
IEW
pro
ject
s—Y
ou c
an u
se p
roje
cts
to g
roup
toge
ther
L
abV
IEW
fil
es a
nd f
iles
not
spe
cifi
c to
Lab
VIE
W, c
reat
e bu
ild
spec
ific
atio
ns, a
nd d
eplo
y or
dow
nloa
d fi
les
to m
ultip
le ta
rget
s fr
om
one
loca
tion
. You
mus
t use
a p
roje
ct to
bui
ld a
ppli
cati
ons
and
shar
ed
libra
ries
. You
als
o m
ust u
se a
pro
ject
to w
ork
with
an
RT,
FPG
A, P
DA
, To
uch
Pane
l, D
SP, o
r em
bedd
ed ta
rget
. Ref
er to
the
spec
ific
mod
ule
docu
men
tatio
n fo
r m
ore
info
rmat
ion
abou
t usi
ng p
roje
cts
with
thes
e ta
rget
s. R
efer
to th
e F
unda
men
tals
»Wor
king
wit
h P
roje
cts
and
Tar
gets
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out u
sing
Lab
VIE
W p
roje
cts.
•A
cces
s ot
her
Win
dow
s ap
plic
atio
ns—
You
can
use
Lab
VIE
W a
s a
.NE
T o
r Act
iveX
cli
ent t
o ac
cess
the
obje
cts,
pro
pert
ies,
met
hods
, and
ev
ents
ass
ocia
ted
wit
h .N
ET
ser
ver
or A
ctiv
eX a
ppli
cati
ons.
Ref
er to
th
e F
unda
men
tals
»Win
dow
s Con
nect
ivit
y bo
ok o
n th
e C
onte
nts t
ab
in th
e L
abV
IEW
Hel
p fo
r m
ore
info
rmat
ion
abou
t the
se f
eatu
res.
•W
rite
mat
hem
atic
al fo
rmul
as, e
quat
ions
, and
scri
pts—
You
can
use
va
riou
s no
des
to p
erfo
rm m
athe
mat
ical
ope
ratio
ns o
n th
e bl
ock
diag
ram
. You
als
o ca
n us
e th
e L
abV
IEW
Mat
hScr
ipt t
ext-
base
d la
ngua
ge to
wri
te m
athe
mat
ical
fun
ctio
ns a
nd s
crip
ts. R
efer
to th
e F
unda
men
tals
»For
mul
as a
nd E
quat
ions
boo
k on
the
Con
tent
s ta
b in
the
Lab
VIE
W H
elp
for
mor
e in
form
atio
n ab
out t
hese
fea
ture
s.
© N
atio
nal I
nstru
men
ts C
orpo
ratio
nA-
1Ge
tting
Sta
rted
with
Lab
VIEWA
Tech
nica
l Sup
port
and
Prof
essi
onal
Ser
vice
s
Vis
it th
e fo
llow
ing
sect
ions
of
the
awar
d-w
inni
ng N
atio
nal I
nstr
umen
ts
Web
sit
e at
ni.com
for
tech
nica
l sup
port
and
pro
fess
iona
l ser
vice
s:
•Su
ppor
t—Te
chni
cal s
uppo
rt a
t ni.com/support
incl
udes
the
follo
win
g re
sour
ces:
–Se
lf-H
elp
Tec
hnic
al R
esou
rces
—Fo
r an
swer
s an
d so
lutio
ns,
visi
t ni.com/support
for
sof
twar
e dr
iver
s an
d up
date
s,
ase
arch
able
Kno
wle
dgeB
ase,
pro
duct
man
uals
, ste
p-by
-ste
p tr
oubl
esho
otin
g w
izar
ds, t
hous
ands
of
exam
ple
prog
ram
s,
tuto
rial
s, a
pplic
atio
n no
tes,
inst
rum
ent d
rive
rs, a
nd s
oon
. R
egis
tere
d us
ers
also
rec
eive
acc
ess
to th
e N
ID
iscu
ssio
n Fo
rum
s at
ni.com/forums
. NI
App
licat
ions
Eng
inee
rs m
ake
sure
eve
ry
ques
tion
sub
mit
ted
onli
ne r
ecei
ves
anan
swer
.
–St
anda
rd S
ervi
ce P
rogr
am M
embe
rshi
p—T
his
prog
ram
en
titl
es m
embe
rs to
dir
ect a
cces
s to
NI
App
lica
tion
s E
ngin
eers
vi
aph
one
and
emai
l for
one
-to-
one
tech
nica
l sup
port
as
wel
l as
excl
usiv
e ac
cess
to o
n de
man
d tr
aini
ng m
odul
es v
ia th
e Se
rvic
es
Res
ourc
e C
ente
r. N
I off
ers
com
plem
enta
ry m
embe
rshi
p fo
r a f
ull
year
aft
er p
urch
ase,
aft
er w
hich
you
may
ren
ew to
con
tinu
e yo
ur
bene
fits
.
For
info
rmat
ion
abou
t oth
er te
chni
cal s
uppo
rt o
ptio
ns in
you
r ar
ea, v
isit
ni.com/services
, or
cont
act y
our
loca
l off
ice
at
ni.com/contact
.
•T
rain
ing
and
Cer
tifi
cati
on—
Vis
it ni.com/training
for
se
lf-p
aced
trai
ning
, eL
earn
ing
virt
ual c
lass
room
s, in
tera
ctiv
e C
Ds,
an
dC
erti
fica
tion
pro
gram
info
rmat
ion.
You
als
o ca
n re
gist
er f
or
inst
ruct
or-l
ed, h
ands
-on
cour
ses
at lo
cati
ons
arou
nd th
e w
orld
.
•Sy
stem
Int
egra
tion
—If
you
hav
e tim
e co
nstr
aint
s, li
mite
d in
-hou
se
tech
nica
l res
ourc
es, o
r ot
her
proj
ect c
halle
nges
, Nat
iona
l Ins
trum
ents
A
llia
nce
Part
ner
mem
bers
can
hel
p. T
o le
arn
mor
e, c
all y
our
loca
l N
Iof
fice
or
visi
t ni.com/alliance
.
Appe
ndix
ATe
chni
cal S
uppo
rt an
d Pr
ofes
sion
al S
ervi
ces
Getti
ng S
tarte
d w
ith L
abVI
EWA-
2ni
.com
If y
ou s
earc
hed ni.com
and
cou
ld n
ot f
ind
the
answ
ers
you
need
, con
tact
yo
ur lo
cal o
ffic
e or
NI
corp
orat
e he
adqu
arte
rs. P
hone
num
bers
for
our
w
orld
wid
e of
fice
s ar
e li
sted
at t
he f
ront
of
this
man
ual.
You
als
o ca
n vi
sit
the
Wor
ldw
ide
Off
ices
sec
tion
of n
i.com/niglobal
to a
cces
s th
e br
anch
of
fice
Web
sit
es, w
hich
pro
vide
up-
to-d
ate
cont
act i
nfor
mat
ion,
sup
port
ph
one
num
bers
, em
ail a
ddre
sses
, and
cur
rent
eve
nts.
© N
atio
nal I
nstru
men
ts C
orpo
ratio
nG-
1Ge
tting
Sta
rted
with
Lab
VIEW
Glos
sary
A auto
mat
ic s
cali
ngA
bili
ty o
f sc
ales
to a
djus
t to
the
rang
e of
plo
tted
val
ues.
On
grap
h sc
ales
, au
tosc
alin
g de
term
ines
max
imum
and
min
imum
sca
le v
alue
s.
B bloc
k di
agra
mP
icto
rial
des
crip
tion
or
repr
esen
tati
on o
f a
prog
ram
or
algo
rith
m. T
he
bloc
k di
agra
m c
onsi
sts
of e
xecu
tabl
e ic
ons
call
ed n
odes
and
wir
es th
at
carr
y da
ta b
etw
een
the
node
s. T
he b
lock
dia
gram
is th
e so
urce
cod
e fo
r th
e V
I. T
he b
lock
dia
gram
resi
des
in th
e bl
ock
diag
ram
win
dow
of t
he V
I.
Boo
lean
con
trol
s an
d in
dica
tors
Fron
t pan
el o
bjec
ts to
man
ipul
ate
and
disp
lay
Boo
lean
(TR
UE
or F
AL
SE)
data
.
brok
en R
un b
utto
nB
utto
n th
at r
epla
ces
the
Run
but
ton
whe
n a
VI
cann
ot r
un b
ecau
se o
f er
rors
.
brok
en V
IV
I th
at c
anno
t run
bec
ause
of
erro
rs; s
igni
fied
by
a br
oken
arr
ow in
the
brok
en R
un b
utto
n.
Glos
sary
Getti
ng S
tarte
d w
ith L
abVI
EWG-
2ni
.com
C chan
nel
1. P
hysi
cal—
A te
rmin
al o
r pi
n at
whi
ch y
ou c
an m
easu
re o
r ge
nera
te a
n an
alog
or
digi
tal s
igna
l. A
sin
gle
phys
ical
cha
nnel
can
incl
ude
mor
e th
an
one
term
inal
, as
in th
e ca
se o
f a
diff
eren
tial
ana
log
inpu
t cha
nnel
or
a di
gita
l por
t of
eigh
t lin
es. A
cou
nter
als
o ca
n be
a p
hysi
cal c
hann
el,
alth
ough
the
coun
ter
nam
e is
not
the
nam
e of
the
term
inal
whe
re th
e co
unte
r m
easu
res
or g
ener
ates
the
digi
tal s
igna
l.
2. V
irtu
al—
A c
olle
ctio
n of
pro
pert
y se
ttin
gs th
at c
an in
clud
e a
nam
e, a
ph
ysic
al c
hann
el, i
nput
term
inal
con
nect
ions
, the
type
of m
easu
rem
ent o
r ge
nera
tion,
and
sca
ling
info
rmat
ion.
You
can
def
ine
NI-
DA
Qm
x vi
rtua
l ch
anne
ls o
utsi
de a
task
(gl
obal
) or
insi
de a
task
(lo
cal)
. Con
figu
ring
vi
rtua
l cha
nnel
s is
opt
iona
l in
Tra
diti
onal
NI-
DA
Q (
Leg
acy)
and
ear
lier
vers
ions
, but
is in
tegr
al to
eve
ry m
easu
rem
ent y
ou ta
ke in
NI-
DA
Qm
x. In
T
radi
tion
al N
I-D
AQ
(Leg
acy)
, you
con
figu
re v
irtu
al c
hann
els
in M
AX
. In
NI-
DA
Qm
x, y
ou c
an c
onfi
gure
vir
tual
cha
nnel
s ei
ther
in M
AX
or i
n yo
ur
prog
ram
, and
you
can
con
figu
re c
hann
els
as p
art o
f a
task
or
sepa
rate
ly.
3. S
witc
h—A
sw
itch
chan
nel r
epre
sent
s an
y co
nnec
tion
poin
t on
a sw
itch.
It
can
be
mad
e up
of
one
or m
ore
sign
al w
ires
(co
mm
only
one
, tw
o, o
r fo
ur),
dep
endi
ng o
n th
e sw
itch
topo
logy
. A v
irtu
al c
hann
el c
anno
t be
crea
ted
wit
h a
swit
ch c
hann
el. S
wit
ch c
hann
els
may
be
used
onl
y in
the
NI-
DA
Qm
x Sw
itch
func
tions
and
VIs
.
chec
kbox
Smal
l squ
are
box
in a
dia
log
box
whi
ch y
ou c
an s
elec
t or
clea
r. C
heck
boxe
s ge
nera
lly
are
asso
ciat
ed w
ith
mul
tipl
e op
tion
s th
at y
ou c
an
set.
You
can
sel
ect m
ore
than
one
che
ckbo
x.
cond
itio
nal t
erm
inal
Term
inal
of
a W
hile
Loo
p th
at c
onta
ins
a B
oole
an v
alue
that
det
erm
ines
if
the
VI
perf
orm
s an
othe
r it
erat
ion.
Con
text
Hel
p w
indo
wW
indo
w th
at d
ispl
ays
basi
c in
form
atio
n ab
out L
abV
IEW
obj
ects
whe
n yo
u m
ove
the
curs
or o
ver
each
obj
ect.
Obj
ects
wit
h co
ntex
t hel
p in
form
atio
n in
clud
e V
Is, f
unct
ions
, con
stan
ts, s
truc
ture
s, p
alet
tes,
pr
oper
ties
, met
hods
, eve
nts,
and
dia
log
box
com
pone
nts.
cont
rol
Fron
t pan
el o
bjec
t for
ent
erin
g da
ta to
a V
I in
tera
ctiv
ely
or to
a s
ubV
I pr
ogra
mm
atic
ally
, suc
h as
a k
nob,
pus
h bu
tton
, or
dial
.
Con
trol
s pa
lett
ePa
lett
e th
at c
onta
ins
fron
t pan
el c
ontr
ols,
indi
cato
rs, a
nd d
ecor
ativ
e ob
ject
s.
curr
ent V
IV
I w
hose
fro
nt p
anel
, blo
ck d
iagr
am, o
r Ico
n E
dito
r is
the
activ
e w
indo
w.
Glos
sary
© N
atio
nal I
nstru
men
ts C
orpo
ratio
nG-
3Ge
tting
Sta
rted
with
Lab
VIEW
D DA
QSe
e da
ta a
cqui
siti
on (
DA
Q).
DA
Q A
ssis
tant
A g
raph
ical
inte
rfac
e fo
r co
nfig
urin
g m
easu
rem
ent t
asks
, cha
nnel
s, a
nd
scal
es.
DA
Q d
evic
eA
dev
ice
that
acq
uire
s or
gen
erat
es d
ata
and
can
cont
ain
mul
tipl
e ch
anne
ls
and
conv
ersi
on d
evic
es. D
AQ
dev
ices
incl
ude
plug
-in
devi
ces,
PC
MC
IA
card
s, a
nd D
AQ
Pad
devi
ces,
whi
ch c
onne
ct to
a c
ompu
ter
USB
or
IEE
E13
94 p
ort.
SCX
I m
odul
es a
re c
onsi
dere
d D
AQ
dev
ices
.
data
acq
uisi
tion
(DA
Q)
1. A
cqui
ring
and
mea
suri
ng a
nalo
g or
dig
ital e
lect
rica
l sig
nals
fro
m
sens
ors,
acq
uisi
tion
tran
sduc
ers,
and
test
pro
bes
or f
ixtu
res.
2. G
ener
atin
g an
alog
or
digi
tal e
lect
rica
l sig
nals
.
data
flo
wPr
ogra
mm
ing
syst
em th
at c
onsi
sts
of e
xecu
tabl
e no
des
that
exe
cute
onl
y w
hen
they
rec
eive
all
req
uire
d in
put d
ata.
The
nod
es p
rodu
ce o
utpu
t dat
a au
tom
atic
ally
whe
n th
ey e
xecu
te. L
abV
IEW
is a
dat
aflo
w s
yste
m. T
he
mov
emen
t of d
ata
thro
ugh
the
node
s de
term
ines
the
exec
utio
n or
der o
f the
V
Is a
nd f
unct
ions
on
the
bloc
k di
agra
m.
data
type
Form
at fo
r inf
orm
atio
n. In
Lab
VIE
W, a
ccep
tabl
e da
ta ty
pes
for m
ost V
Is
and
func
tion
s ar
e nu
mer
ic, a
rray
, str
ing,
Boo
lean
, pat
h, r
efnu
m,
enum
erat
ion,
wav
efor
m, a
nd c
lust
er.
defa
ult
Pres
et v
alue
. Man
y V
I in
puts
use
a d
efau
lt va
lue
if y
ou d
o no
t spe
cify
a
valu
e.
devi
ceA
n in
stru
men
t or c
ontr
olle
r you
can
acc
ess
as a
sin
gle
enti
ty th
at c
ontr
ols
or m
onit
ors
real
-wor
ld I
/O p
oint
s. A
dev
ice
ofte
n is
con
nect
ed to
a h
ost
com
pute
r th
roug
h so
me
type
of
com
mun
icat
ion
netw
ork.
See
als
o D
AQ
de
vice
and
mea
sure
men
t dev
ice.
drag
To u
se th
e cu
rsor
on
the
scre
en to
sel
ect,
mov
e, c
opy,
or
dele
te o
bjec
ts.
driv
erSo
ftw
are
that
con
trol
s a
spec
ific
har
dwar
e de
vice
, suc
h as
a D
AQ
dev
ice.
dyna
mic
dat
a ty
peD
ata
type
use
d by
Exp
ress
VIs
that
incl
udes
the
data
ass
ocia
ted
with
a
sign
al a
nd a
ttri
bute
s th
at p
rovi
de in
form
atio
n ab
out t
he s
igna
l, su
ch a
s th
e na
me
of th
e si
gnal
or
the
date
and
tim
e L
abV
IEW
acq
uire
d th
e da
ta.
Att
ribu
tes
spec
ify
how
the
sign
al a
ppea
rs o
n a
grap
h or
cha
rt.
Glos
sary
Getti
ng S
tarte
d w
ith L
abVI
EWG-
4ni
.com
E Err
or li
st w
indo
wW
indo
w th
at d
ispl
ays
erro
rs a
nd w
arni
ngs
occu
rrin
g in
a V
I an
d in
som
e ca
ses
reco
mm
ends
how
to c
orre
ct th
e er
rors
.
erro
r m
essa
geIn
dica
tion
of
a so
ftw
are
or h
ardw
are
mal
func
tion
or
of a
n un
acce
ptab
le
data
ent
ry a
ttem
pt.
Exp
ress
VI
A s
ubV
I des
igne
d to
aid
in c
omm
on m
easu
rem
ent t
asks
. You
con
figu
re a
n E
xpre
ss V
I us
ing
a co
nfig
urat
ion
dial
og b
ox.
F For
Loo
pIt
erat
ive
loop
str
uctu
re th
at e
xecu
tes
its
subd
iagr
am a
set
num
ber o
f tim
es.
Equ
ival
ent t
o te
xt-b
ased
cod
e: For i = 0 to n – 1, do...
.
fron
t pan
elIn
tera
ctiv
e us
er in
terf
ace
of a
VI.
Fro
nt p
anel
app
eara
nce
imit
ates
ph
ysic
al in
stru
men
ts, s
uch
as o
scil
losc
opes
and
mul
tim
eter
s.
func
tion
Bui
lt-in
exe
cutio
n el
emen
t, co
mpa
rabl
e to
an
oper
ator
, fun
ctio
n, o
r st
atem
ent i
n a
text
-bas
ed p
rogr
amm
ing
lang
uage
.
Fun
ctio
ns p
alet
tePa
lett
e th
at c
onta
ins
VIs
, fun
ctio
ns, b
lock
dia
gram
str
uctu
res,
and
co
nsta
nts.
G Gen
eral
Pur
pose
In
terf
ace
Bus
GPI
B. S
ynon
ymou
s w
ith
HP-
IB. T
he s
tand
ard
bus
used
for
con
trol
ling
el
ectr
onic
inst
rum
ents
wit
h a
com
pute
r. A
lso
call
ed I
EE
E 4
88 b
us
beca
use
it is
def
ined
by
AN
SI/I
EE
E S
tand
ards
488
-197
8, 4
88.1
-198
7, a
nd
488.
2-19
92.
grap
h2D
dis
play
of
one
or m
ore
plot
s. A
gra
ph r
ecei
ves
and
plot
s da
ta a
s a
bloc
k.
Glos
sary
© N
atio
nal I
nstru
men
ts C
orpo
ratio
nG-
5Ge
tting
Sta
rted
with
Lab
VIEW
I I/O
Inpu
t/Out
put.
The
tran
sfer
of d
ata
to o
r fro
m a
com
pute
r sys
tem
invo
lvin
g co
mm
unic
atio
ns c
hann
els,
ope
rato
r inp
ut d
evic
es, a
nd/o
r dat
a ac
quis
itio
n an
d co
ntro
l int
erfa
ces.
icon
Gra
phic
al r
epre
sent
atio
n of
a n
ode
on a
blo
ck d
iagr
am.
indi
cato
rFr
ont p
anel
obj
ect t
hat d
ispl
ays
outp
ut, s
uch
as a
gra
ph o
r L
ED
.
inst
rum
ent d
rive
rA
set
of
high
-lev
el f
unct
ions
that
con
trol
and
com
mun
icat
e w
ith
inst
rum
ent h
ardw
are
in a
sys
tem
.
Inst
rum
ent I
/O A
ssis
tant
Add
-on
laun
ched
fro
m th
e In
stru
men
t I/O
Ass
ista
nt E
xpre
ss V
I th
at
com
mun
icat
es w
ith
mes
sage
-bas
ed in
stru
men
ts a
nd g
raph
ical
ly p
arse
s th
e re
spon
se.
L labe
lTe
xt o
bjec
t use
d to
nam
e or
des
crib
e ob
ject
s or
regi
ons
on th
e fr
ont p
anel
or
blo
ck d
iagr
am.
Lab
VIE
WL
abor
ator
y V
irtu
al I
nstr
umen
t Eng
inee
ring
Wor
kben
ch. L
abV
IEW
is a
gr
aphi
cal p
rogr
amm
ing
lang
uage
that
use
s ic
ons
inst
ead
of li
nes
of te
xt to
cr
eate
pro
gram
s.
LE
DL
ight
-em
ittin
g di
ode.
lege
ndO
bjec
t a g
raph
or c
hart
ow
ns to
dis
play
the
nam
es a
nd p
lot s
tyle
s of
plo
ts
on th
at g
raph
or
char
t.
M MA
XSe
e M
easu
rem
ent &
Aut
omat
ion
Exp
lore
r.
Mea
sure
men
t &
Aut
omat
ion
Exp
lore
rT
he s
tand
ard
Nat
iona
l Ins
trum
ents
har
dwar
e co
nfig
urat
ion
and
diag
nost
ic
envi
ronm
ent f
or W
indo
ws.
Glos
sary
Getti
ng S
tarte
d w
ith L
abVI
EWG-
6ni
.com
mea
sure
men
t dev
ice
DA
Q d
evic
es s
uch
as th
e E
Ser
ies
mul
tifu
ncti
on I/
O (M
IO) d
evic
es, S
CX
I si
gnal
con
diti
onin
g m
odul
es, a
nd s
wit
ch m
odul
es.
men
u ba
rH
oriz
onta
l bar
that
list
s th
e na
mes
of
the
mai
n m
enus
of
an a
pplic
atio
n.
The
men
u ba
r ap
pear
s be
low
the
titl
e ba
r of
a w
indo
w. E
ach
appl
icat
ion
has
a m
enu
bar
that
is d
isti
nct f
or th
at a
pplic
atio
n, a
lthou
gh s
ome
men
us
and
com
man
ds a
re c
omm
on to
man
y ap
plic
atio
ns.
N NI-
DA
QD
rive
r sof
twar
e in
clud
ed w
ith a
ll N
I DA
Q d
evic
es a
nd s
igna
l con
diti
onin
g co
mpo
nent
s. N
I-D
AQ
is a
n ex
tens
ive
libr
ary
of V
Is a
nd A
NSI
C fu
ncti
ons
you
can
call
from
an
appl
icat
ion
deve
lopm
ent e
nvir
onm
ent (
AD
E),
suc
h as
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-3, 2
-11,
2-1
3L
abV
IEW
res
ourc
es, 1
-20,
2-1
2se
arch
ing,
2-4
, 2-1
1, 2
-13
tech
nica
l sup
port
, A-1
I indi
cato
rs, 1
-19,
3-1
7, 5
-1ad
ding
num
eric
, 2-5
conf
igur
ing,
1-2
1cr
eati
ng, 2
-13
cust
omiz
ing,
1-1
7da
ta ty
pe, 5
-3nu
mer
ic, 5
-1re
mov
ing,
2-8
Inpu
t pal
ette
, 2-3
inpu
ts, E
xpre
ss V
I, 1
-20
Inst
rum
ent D
rive
r N
etw
ork,
4-7
inst
rum
ent d
rive
rs, 4
-7fi
ndin
g, 4
-13
inst
allin
g, 4
-13
NI
reso
urce
s, A
-1In
stru
men
t I/O
Ass
ista
nt E
xpre
ss V
I, 4
-9, 4
-14
inst
rum
ents
acqu
irin
g in
form
atio
n, 4
-11
com
mun
icat
ing,
4-7
pars
ing
info
rmat
ion,
4-1
1se
lect
ing,
4-1
0in
trod
uctio
n to
this
man
ual,
ix
Inde
x
Getti
ng S
tarte
d w
ith L
abVI
EWI-4
ni.c
om
K knob
con
trol
, cus
tom
izin
g (f
igur
e), 1
-16
Kno
wle
dgeB
ase,
A-1
L Lab
VIE
Whe
lp r
esou
rces
, 2-1
2ot
her
feat
ures
, 5-1
proj
ects
, 5-5
Lab
VIE
W H
elp,
1-1
2, 1
-20
sear
chin
g, 2
-3, 2
-11,
2-1
3L
ED
s, p
alet
te, 3
-10
LVM
. See
.lvm
file
s.lv
m f
iles
, 3-1
4, 3
-17
M man
ual.
See
docu
men
tati
onm
arqu
ee, 2
-9m
enus
, cus
tom
izin
g, 5
-5M
erge
Sig
nals
fun
ctio
n, 2
-5fi
gure
, 1-1
5m
odif
ying
fron
t pan
els,
2-8
sign
als,
1-1
1, 2
-3
N Nat
iona
l Ins
trum
ents
sup
port
and
se
rvic
es, A
-1N
ew d
ialo
g bo
x, 1
-4, 1
-18,
3-2
figu
re, 1
-5N
I E
xam
ple
Find
er, 2
-11
NI
Inst
rum
ent D
rive
r F
inde
r, 4
-13
NI
Inst
rum
ent D
rive
r N
etw
ork,
4-7
NI-
DA
Qm
x ta
sks,
4-1
3cr
eatin
g, 4
-2nu
mer
ic c
ontr
ols,
5-1
pale
tte,
1-7
O obje
cts
dese
lect
ing,
1-1
0w
irin
g on
the
bloc
k di
agra
m, 1
-10
Ope
rati
ng to
ol, 1
-11
outp
uts,
Exp
ress
VI,
1-2
0
P pale
ttes Ari
thm
etic
& C
ompa
riso
n, 1
-12
Con
trol
s, 1
-6E
xecu
tion
Con
trol
, 2-6
, 2-1
4Fu
ncti
ons,
1-1
2In
put,
2-3
LE
Ds,
3-1
0se
arch
ing,
2-6
show
ing
all c
ateg
orie
s, 5
-1, 5
-2pa
rsin
g in
form
atio
n fo
r in
stru
men
ts, 4
-11
plac
ing
obje
cts
on th
e bl
ock
diag
ram
fro
m th
e he
lp, 2
-13
Posi
tion
ing
tool
, 1-1
0pr
ogra
mm
atic
ally
con
trol
ling
VIs
, 5-4
prog
ram
min
g ex
ampl
es (
NI
reso
urce
s), A
-1pr
ojec
ts, 5
-5pr
oper
ty d
ialo
g bo
xes,
1-2
1pu
blis
hing
VIs
on
the
Web
, 5-4
R rela
ted
docu
men
tatio
n, x
rem
ovin
g in
dica
tors
, 2-8
Run
but
ton,
1-6
, 1-1
1br
oken
, 2-8
, 2-1
4ru
nnin
g V
Is, 1
-11
cont
inuo
usly
, 2-6
S savi
ng d
ata
diff
eren
t file
for
mat
s, 5
-4Sa
ve D
ata
VI b
lock
dia
gram
(fig
ure)
, 3-1
6
Inde
x
© N
atio
nal I
nstru
men
ts C
orpo
ratio
nI-5
Getti
ng S
tarte
d w
ith L
abVI
EW
to f
iles,
3-1
3, 3
-14,
3-1
7w
hen
prom
pted
by
user
, 3-1
5, 3
-16
Scal
ing
and
Map
ping
Exp
ress
VI
defi
ning
slo
pe, 1
-12
sear
chin
gex
ampl
es, 2
-11
help
, 2-4
, 2-1
1, 2
-13
pale
ttes,
2-6
sele
ctin
gin
stru
men
ts, 4
-10
obje
cts,
1-1
0sh
ared
libr
arie
s, b
uild
ing,
5-5
sign
als
acqu
irin
g, 4
-2an
alyz
ing,
3-9
chan
ging
type
, 1-8
grap
hing
, 1-1
5m
odif
ying
, 1-1
1, 2
-3Si
mul
ate
Sign
al E
xpre
ss V
I, 1
-8si
mul
ated
sig
nals
, cus
tom
izin
g, 3
-4so
ftw
are
(NI
reso
urce
s), A
-1su
bVIs
, 5-2
syst
em r
equi
rem
ents
, x
T tabl
es, 2
-9di
spla
ying
dat
a, 2
-14
task
s addi
ng n
ew c
hann
els,
4-6
NI-
DA
Qm
x, 4
-13
TD
M. S
ee .t
dm f
iles
.tdm
fil
es, 3
-17
.tdm
s fi
les,
3-1
7te
chni
cal s
uppo
rt, A
-1te
mpl
ate
VIs
, 1-3
, 1-4
, 1-1
8te
xt-b
ased
lang
uage
s, c
allin
g co
de, 5
-4, 5
-5T
ime
Del
ay E
xpre
ss V
I, 2
-9to
ols O
pera
ting,
1-1
1Po
sitio
ning
, 1-1
0
Wir
ing,
1-1
0tr
aini
ng a
nd c
erti
fica
tion
(N
I re
sour
ces)
, A-1
trou
bles
hoot
ing
(NI
reso
urce
s), A
-1
U user
inte
rfac
e. S
ee f
ront
pan
el
V virt
ual i
nstr
umen
ts. S
ee V
IsV
Is, 1
-1bl
ank,
2-2
buil
ding
, 1-2
cust
omiz
ing
men
us, 5
-5ic
ons,
5-2
new
, 2-2
prog
ram
mat
ical
ly c
ontr
ollin
g, 5
-4pu
blis
hing
on
the
Web
, 5-4
runn
ing,
1-1
1co
ntin
uous
ly, 2
-6su
bVIs
, 5-2
tem
plat
e, 1
-3, 1
-4, 1
-18
volt
age,
ana
lyzi
ng, 3
-9
W War
ning
Lig
ht V
I blo
ck d
iagr
am (f
igur
e), 3
-12
war
ning
ligh
ts, a
ddin
g, 3
-10
Web
res
ourc
es, A
-1W
hile
Loo
p, 2
-7w
ires br
oken
, 2-8
, 2-1
4de
letin
g, 1
-11
wir
ing ob
ject
s on
the
bloc
k di
agra
m, 1
-10
tool
, 1-1
0W
rite
to M
easu
rem
ent F
ile
Exp
ress
VI,
3-1
4,
3-17 sa
ving
dat
a, 3
-14
Recommended
