Hướng dẫn sử dụng thiết bị đo ồn RION NA-28. Xem thêm

HNG DN S DNG

MY O N

NA-28

Lin h mua hng, Ms.Ngn: 0949.881.724 Page 2

Cc k hiu thng dng

(Mc ting n v mc p sut m thanh c gi chung l mc p sut m thanh, phn bit vi vic m tn s)

Gi tr o

Cc k hiu thi gian o

F, S, 10 ms I

Lp

Mc p sut m

Mc o p sut m - A LAF, LAS, LA10ms LAI

Mc o p sut m - C LCF, LCS, LC10ms (LCI)

Mc o p sut m - Z LZF, LZS, LZ10ms (LZI)

Leq

Mc m lin tc tng ng

Mc o m A lin tc tng ng LAeq LAIeq

Mc o m C lin tc tng ng LCeq (LCIeq)

Mc o m Z lin tc tng ng LZeq (LZIeq)

LE

Mc m kch thch

Mc o m - A kch thch LAE

Mc o m - C kch thch LCE

Mc o m - Z kch thch LZE

Lmax, Lmin

Mc m cc i

Mc o m A cc i LAFmax, LASmax, LA10msmax

LAImax

Mc o m C cc i LCFmax, LCSmax, LC10msmax

(LCImax)

Mc o m Z cc i LZFmax, LZSmax, LZ10msmax

(LZImax)

LN Mc nhm m

Mc o m A theo nhm LAFNn LASNn, LA10msNn

(LAINn)

Mc o m C theo nhm LCFNn, LCSNn, LC10msNn

(LCINn)

Mc o m Z theo nhm LZFNn, LZSNn, LZ10msNn

(LZINn)

Lpeak

Mc nh m Mc o nh m - A LAeq

Mc o nh m - C LCeq

Mc o nh m - Z LZeq

Ltm5

Mc Takt-max m

Mc o m A Takt-max LAtm5

Mc o m C Takt-max (LCtm5)

Mc o m Z Takt-max LZtm5

Mc o Z tng ng vi mc o flat hiu dng

Khng tn ti vic kt hp gia mc nh p sut m v takt-max vi c tnh I

Gi tr o trong cc ngoc n () ch ra cc mc c th c hin th nh

cc bc tnh ton nhng khng s dng hoc khng ph hp


Cc k hiu trong my o n NA-28 theo chun quc t v JIS (Trch t ISO 1996, 3891, IEC 61672-1, JIS Z 8202, 8731)

K hiu NA-28

M t Tn s o

K hiu ISO

K hiu IEC

K hiu JIS

LZ n Z Lp ------ LP

LA Mc o m A A LpA ------ LPA

LC Mc o m C C ------ ------ -----

LZeq Mc m tng ng lin tc

Z ------ ------ -----

LAeq

Mc o m A tng ng lin

tc

A LAeq,T LAeq,T LAeq,T

LAeq

Mc o m C tng ng lin tc

C ----- LCeq,T -----

LZE Mc m kch thch

Z ----- ----- -----

LAE Mc o m - A kch thch

A LAE LAE,T LAE

LCE Mc o m - C kch thch

C ----- ----- ------

LAN

LA05

Mc o m A theo nhm

A LAN, T

LA5,T -----

LAN, T

LA5,T

LA10 LA10,T ----- LA10,T

LA50 LA50,T ----- LA50,T

LA90 LA90,T ----- LA90,T

LA95 LA95,T ----- LA95,T

LAmax Mc o m A cc i

A ----- ----- ------

LAmin Mc o m A cc tiu

A ----- ----- ------

LCpk Mc o nh m

C C ---- LCpeak -----

Mc o Z tng ng vi mc o flat hiu dng


Ch

Ch vn hnh thit b theo nh ti liu hng dn ny

NA-28 l thit b chnh xc. Cn bo v thit b trnh b sc v rung ng mnh. Cn ch khng c chm tay vo mng microphone. Mng ny l mng kim loi rt mng, n rt d b hng.

Ch s dng b phn microphone /tin khuch i c s hiu ng nh c ghi trn thn my.

iu kin mi trng thit b c th hot ng nh sau: Khong nhit t -10

0C n +500C, m 10 n 90%RH.

Trnh thit b b t, bi bn, nhit hoc m qu cao, v chiu trc tip nh sng mt tri khi ct gi. Cng cn trnh thit b gn nhng khu vc khng kh c nng mui cao, hoc hi sulphur, kh chy n, v nhng khu vc cha ha cht.

Lun tt ngun ca thit b sau khi s dng. Tho pin ra khi thit b nu thi gian di khng s dng thit b (lu hn 1 tun).

Khi tho cc cp, tho cc u rc, v ch khng ko cp

Trc khi s dng v trc khi ct chuyn thit b, cn kim tra u microphone khng b lng. Nu n b lng, cn m bo vt cht li u microphone ny.

Ch lau thit b bng vi mm kh, khi tht s cn thit th dng vi hi m nc. Ch , khng c dng cn, dung mi hoc cc loi ha cht lau chi thit b.

Khng c t tho lp hoc sa cha thit b. Nu c sai hng, cn my ni kh ro sch s v lin h vi nh cung cp.

Khng dng cc vt dng nh bt, to vt ch ln mn hnh LCD v mt my.

Khng lt cc vt dng nh dy in, mu kim loi, nha dn in vo trong my

m bo my lun o chnh xc, nn c k hoch bo dng v hiu chnh my theo ng nh k. Lin h vi nh cung cp.

Ch s dng ng loi pin.


TNG QUAN

My o n NA-28 cho php phn tch di octave v 1/3 octave theo thi gian thc. Thit b ny tun theo yu cu kim sot cht lng v cc tiu chun JIS v IEC. N cho php o trng m thanh khuch tn v cng t cc chun yu cu khi supplied windscreen c s dng.

My NA-28 bao gm microphone in cc ngng 1/2 UC-59, tin khuch i NH-23 v thn my chnh. Thn my chnh gm mn hnh LCD, bn phm iu khin, cng cp ngun AC v DC, cng USB, cng so snh, cng vo ng b ngoi v cm bin iu khin t xa bng hng ngoi. Thit b ny cho php phn tch di octave thi gian thc trong khong t 16 Hz n 16 kHz, v phn tch di 1/3 octave thi gian thc trong khong 12.5 Hz n 20 kHz. N cng c kh nng phn tch ng thi di octave v 1/3 octave. (Trong trng hp ny tn s gii hn cho di octave l 8 kHz v cho di 1/3 octave l 12.5 kHz).

Cc kt qu o c lu tr trc tip trn th nh CompactFlash (trong ti liu ny c gi l th nh CF).

Giao tip vi my tnh c thc hin thng qua cng USB. Do cng USB tng thch vi cc b nh c bit nn my NA-28 s c nhn ra nh 1 a di ng khi kt ni vi my tnh. iu ny cho php vic truyn s liu t th nh CF sang my tnh m khng cn tho th nh CF ra khi NA-28. Chc nng my ch cho USB cng c cung cp, cho php s dng mt my in qua cng USB.

B iu khin t xa qua hng ngoi l b phn ty chn cho php iu khin my NA-28 m khng cn cp ni.

Cng ra so snh l kiu collector m, n c th c s dng iu khin cc thit b ngoi vi. Tri li cng vo ng b cho php iu khin my NA-28 t thit b bn ngoi.

Cc th chng trnh ty chn cho vic ghi sng, dng dao ng m v o cc thng s khc cng c h tr.

My o n NA-28 cho php o theo nh lng.

Vic x l chnh bao gm kiu o n v kiu phn tch

Vic o ng thi cc i lng vi vic o theo thi gian v o theo tn s la chn.

n Lp

n lin tc tng ng Leq

n kch thch LE

n cc i Lmax

n cc tiu Lmin

n theo nhm LN (t 1 n 99) bc tng gi tr t 1 n 5 tnh theo Lp hoc Leq,1sec


Trong kiu o n, mt trong cc cch o sau c th c la chn t cc knh ph

n nh Lpeak

n takt-max Ltm5

Cc c trng ca php o theo tn s l ging vi knh ph

Cc c trng o theo tn s A, C, Z

Cc c trng o theo thi gian

o (knh chnh) F, S, 10 ms

o (knh ph) F, S, 10 ms, I

Mt mn hnh LCD mu vi n nn hin th cc thng s o v cc gi tr o trong kiu o n v kiu phn tch.

Cc chn sau l c lp tng kh nng ng dng ca sn phm:

USB printer BL112U1: Dng in kt qu o

Level recorder LR-07, LR-20A (No CE): Dng ghi n trong khong thi gian di


Cc b phn iu khin v chc nng

Mt trc

Microphone/Tin khuch i

B phn Microphone/tin khuch i c th c tho ra khi thn my chnh v ni qua cp ko di ty chn. Vic ny cho php s dng v tr cch xa.

m bo l ch s dng b phn Microphone/tin khuch i c cng s hiu trn thn my. Nu khc i, sn phm s khng m bo ng cc tnh nng.

Mn hnh hin th

Mn hnh hin th ca thit b l loi LCD ha c n nn. N hin th cc kt qu o n di dng s v th. N cng hin th tnh trng hot ng ca my, cc thng s o, cc cnh bo v nhng thng tin khc.


Bn phm

Phm START/STOP

Nhn phm ny bt u hay dng o (cng bao gm vi chc nng khc)

Phm STORE

Dng lu s liu t ng hay bng tay vo b nh

Phm MODE

Chuyn qua li gia cc kiu o

Mi ln nhn phm ny, ln lt cc chc nng la chn tng ng trn cc menu

Phm PAUSE/CONT

Trong qu trnh o, phm ny c th c dng loi ra cc phn khng mong mun x l. Nhn phm dng qu trnh o, v nhn phm li ln na tip tc o li.

Chc nng back-erase to cho n kh nng loi ra d liu vi mi khong thi gian 5 giy trc khi phm c nhn x l.

Khi ang tm dng, n LED ch th nhp nhy mu xanh l.

LED ch th

Ch th tnh trng hot ng ca thit b bng cch nhp nhy cc mu , xanh l v xanh l cy.

Cc phm LEVEL / (cc phm chuyn khong o)

Dng la chn khong o.

Trong ch o n, c th thit lp mt trong su khong o sau:

20 n 80, 20 n 90, 20 n 100, 20 n 110, 20 n 120, v 30 n 130 dB


Trong ch phn tch, c th thit lp mt trong su khong o sau:

-10 n 80, 0 n 90, 10 n 100, 20 n 110, 30 n 120, v 40 n 130 dB

Cc phm

Bn phm ny c dng cho vic la chn v ca t cc mc trn cc mn hnh thc n.

Nhn v gi cc phm / c th thay i nhanh.

Phm ENT (phm Enter)

Nhn phm ny vo hoc kt thc vic thit lp cc thng s trong mn hnh thc n, hoc cc thit lp khc.

Khi phm ny c nhn trong mn hnh o n, mn hnh lit k cc thc n s hin ln.

Phm POWER

Tt bt ngun cho my. Phm ny phi c nhn v gi lu hn 1 giy mi c tc dng.

Phm FREQ WEIGHT/TIME WEIGHT

Phm FREQ WEIGHT chn c tnh o theo tn s cho knh chnh.

Phm TIME WEIGHT chn c tnh o theo thi gian cho knh chnh.

Cc c tnh o theo tn s hay thi gian cho knh ph c th c la chn t mn hnh MENU.

Cng c th nhn phm FREQ WEIGHT trong khi nhn v gi phm MENU t knh ph thnh c trng o theo tn s, v nhn phm FREQ TIME trong khi nhn v gi phm MENU t knh ph thnh c trng o theo thi gian.

Tuy nhin , nh cc phm ra v nhn li chng cho cc thit lp mi.

Phm LIGHT

Phm ny bt n nn ca mn hnh cho d c khi my c t ni thiu nh sng. Nhn li phm mt ln na tt n nn.

Khi chc nng bt n t ng c chn trong thc n, n nn s t ng tt sau khong thi gian n nh.

Phm CAL (Phm hiu chun)

Phm ny c s dng hiu chun thit b v hiu chun mc ca ph kin ni vo vo my.

Phm SLM/RTA

Phm ny dng chuyn qua li gia hin th o n v mn hnh phn tch.

Phm MENU

Phm ny dng m mn hnh thc n thit lp cc thng s o v cc thit lp khc. Nhn li phm mt ln na tt thc n


Phm GRP/NUM ( ha / ch s)

Phm ny chuyn i mn hnh o gia hin th ha hay con s.

Kha phm

Nhn ng thi cc phm GPR/NUM v MENU kha phm. Biu tng ci kha mu hin ln pha di gc bn tri mn hnh, v tt c cc phm tr phm LIGHT u b v hiu ha.

Nu mt phm khc phm LIGHT c nhn, ch th ci kha xut hin. Nhn sng thi cc phm GPR/NUM v MENU b ch kha phm.

tt my, chng ta phi b ch kha phm trc, sau nhn v gi phm POWER.

Chc nng kha phm khng tc dng trong mn hnh hiu chun.

Np khe cm th nh M np ny lp hay tho th nh CF.

Cm bin hng ngoi cho iu khin t xa S dng iu khin t xa qua cng hng ngoi cho php vn hnh thit b t xa.

Mt di

Np y

Np ny bo v cc cng ni pha di khi di chuyn hoc ct gi my. Tho np y ny ra s dng cc cng ni nh hnh trn.

Cng cp ngun t ngoi B i ngun AC NC-94A c th c cm vo y cp ngun cho my t ngun in li AC.

Ch quan trng

trnh lm hng my, khng c s dng cc b bin i ngun loi khc.

Jack TRG IN / COMP OUT


Cho php a tn hiu ng b bn ngoi vo v tn hiu so snh ra.

Jack AC OUTPUT / DC OUTPUT

AC OUTPUT: a ra tn hiu AC ca ch o tn s DC OUTPUT: a ra in p DC tng ng vi mc p sut m.

Cng USB Dng kt ni ti my tnh hoc ti my in c cng USB

Mt sau

Tm ghi danh

Cho bit cc thng tin bao gm: s hiu ca my, s ca microphone, s ca b tin khuch i, s s-ri ca my, v ngy thng sn xut.

L gen lp chn my nh My c th c lp trn b chn my nh bng l gen ny

Khoang cha Pin Bn pin (IEC R14, c C) c lp y.


Chun b

Ngun in

NA-28 c th c cp ngun bi 4 pin IEC R14 c C, hoc ngun AC qua b i in NC-94A.

Loi pin np li cng c th c s dng, nhng NA-28 khng c chc nng sc pin.

Ch

Khi b bin i i in AC c cm vo, my s c cp ngun t b bin i in, k c khi cc pin vn ang c lp trong my. (B bin i in AC c u tin cao hn).

Trong trng hp ngun in AC b mt, my s t ng chuyn sang dng ngun in t pin.

Lp pin vo my

1. Tho np hp pin ra nh trong hnh di y

2. Lp 4 pin IEC R14, c C vo. Ch lp ng in cc ca pin vo cc k hiu trong bung cha pin.

3. Lp np y li.

Ch quan trng

Ch khng lp ngc cc pin (+) v (-) .

Lun thay c 4 pin cng lc. trnh hng my, khng s dng pin mi vi pin s dng, hoc pin khc loi.

trnh pin chy t ra my, tho pin ra khi my khi my khng s dng.


Thi gian s dng ca pin ph thuc vo iu kin s dng my v nh sn xut pin

Mt s gi tr tham kho nh sau:

Thi gian s dng pin (230C) Pin Mangan R14PU 6 ting

Pin kim LR14 16 ting

Vi pin kim, nu n nn mn hnh lun sng (ON) th pin cng c 10 ting

Khi hoc cng ra AC hoc DC c bt ON, thi gian s dng pin s ngn hn khong 20%.

Khi chc nng t ng lu c s dng, thi gian s dng pin s b ngn i khong 10 n 20 %.

Thi gian s dng pin cng c th b ngn i khi chng trnh ty chn hot ng.

Ch

Trong iu kin mc nh ca nh sn xut, c hai cng ra AC v DC u c thit lp l MAIN. tng thm thi gian s dng pin, chng ta c th chn [Input/Output] t mn hnh danh sch thc n v thit lp c hai cng ra AC v DC thnh OFF

B i in AC

Ni b i in AC nh trong hnh sau

Ch quan trng

trnh lm h hng thit b, khng c s dng b i in no khc ngoi b i in NC-94A.

Pin d phng


NA-28 s dng pin d phng (pin sc) duy tr cc thit lp trong my, d liu trong b nh v hot ng ca ng h.

Khi ngun in ca my c bt, pin d phng s c sc.

Mi lin h gia thi gian sc pin v thi gian duy tr ca pin nh sau:

Pin d phng c sc y sau 24 gi sc. Thi gian sc Thi gian duy tr 1 gi 2 ngy 6 gi 8 ngy 24 gi 30 ngy

Thi gian s dng ca pin d phng l c gii hn. Bn nn c pin thay th sau 5 nm s dng. Xin lin h vi nh cung cp.

Ch

Khi pin d phng c, thi gian duy tr d liu s ngn li

Qu cu chn gi (WS-10)

Khi thc hin o trong iu kin thi tit c gi, hoc trong phng c iu ha nhit , hoc tng t, gi s gy nhiu ln microphone c th l nguyn nhn gy sai s php o. gim nh hng ny bng cch s dng qu cu chn gi WS-10.

Khi s dng qu cu chn gi, thit lp hiu chun qu cu chn gi thnh ON, nh trong hnh di y.

Khi lp qu cu chn gi vo u microphone c th s gy sai lch mt cht v tn s p ng, nh trong ch v k thut.

Bn c th s dng hiu chun m bo p ng tn s phng khi qu cu chn gi WS-10 c lp .

1. Chn [Measurement] t danh sch thc n v nhn phm ENT. 2. Chn [Wind Screen Correction] t thc n v thit lp thnh ON. 3. Nhn phm MENU v mn hnh o.


Thit lp Wind Screen Correction thnh ON

m bo thit lp mc ny thnh OFF khi thc hin hiu chun m vi b pht m chun.

Hiu chun m thanh khuch tn

Khi s dng thit b tng thch vi vin tiu chun quc gia M ANSI, t ch hiu chun m thanh khuch tn ON.

Chc nng b ny c thit k m bo s p ng sng phng ca m thanh khi b khuch tn.

1. Chn ch o [Measurement] v nhn ENT

2. Chn ch hiu chun m thanh khuch tn [Diffuse Field Correction] v bt ON

3. Nhn phm MENU a my v ch o

Mn hnh thc n o

t Diffuse Field Correction thnh ON


Gn chn

Khi s dng my o trong khong thi gian di, ta s dng chn gn vo my. Ch phi gn cho ng gien v trnh b ri.

Th nh (CF Card) v Th chng trnh

Gi tri o c th c nh li v lu trong th nh. Gi tr ny c th c s l bng phn mm trong my tnh. Th chng trnh cng c th c s dng nu ta mua thm, nhng phn mm ny khi lp vo my s m rng chc nng cho NA-28.

Gn th nh

Ch quan trng Ch khi gn th nh th my phi tt

1. M np khe cha th nh 2. Gn th nh vo khe. Ch chiu ca th 3. g th nh ra khi my ta nhn thanh g th mu en.


Cp m rng ca Microphone (EC-04 series)

Ch phi tt my khi tho microphone ra khi thn my. C cc loi cp vi chiu di khc nhau ty thuc vo s t hng ca qu khch

Kt ni vi my in (BL-112UI)

Cng USB kt ni vi my in nm pha di thn my, cp kt ni CC-97

Kt ni vi thit b ghi tn hiu (LR-07, LR-20)

Thit b ghi tn hiu m thanh c kt ni vi my NA-28 thng qua cng AC OUTPUT

Kt ni vi my tnh

Cng USB nm pha di thn my c th ni vi cng USB ca my tnh thng qua cp A male mini B male.

Th nh nm trong my c th c hin th trong my tnh nh b nh m rng m khng cn phi ci t thm phn mm iu khin USB.

Khi my NA-28 khng s dng chc nng giao tip th ta t trn my chc nng ny OFF. Khi khi ng ON chc nng ny, th my tnh s i hi phi ci t phn mm iu khin USB.


Ci t thi gian cho my

ci t thi gian cho my, ta thc hin nh sau

1. Nhn phm ngun POWER bt thit b

2. Nhn phm MENU hin th danh mc chc nng

3. S dng phm tm dng [System] nhn phm ENT

4. S dng phm tm dng [Time Setting] nhn phm ENT

5. S dng phm tm dng [Year/Month/Day] hoc [Hour/Min/Sec]

6. S dng phm v ENT la chn Ngy Thng hoc Gi cn ci t [Year/Month/Day] [Hour/Min/Sec]

7. S dng phm thay i gi tr v ENT nh gi tr ny

8. Nhn phm START/STOP quay li mn hnh o

Ch

IC ng h trong my c th chy sai khong 1 pht / thng. Do , trc khi o nn kim tra li thi gian v hiu chnh li thi gian nu cn


Mn hnh thc n h thng

S dng cc phm chn n mc [Time setting] v nhn phm ENT

Mn hnh h thng Thi gian

S dng cc phm chn n mc cn thit lp

S dng cc phm hoc phm ENT chn s

S dng cc phm thay i gi tr

S dng cc phm hoc phm ENT chuyn sang s khc

Nhn phm ENT xc nhn

Nhn phm START/STOP tr v mn hnh o

Thc hin php o khi tri ti

Khi nhn phm LIGHT th my n m hnh s bt sng v my c s dng d dng khi tri ti. Chc nng ny c th hin nh sau


2. S dng phm tm dng [I/O] nhn phm ENT

3. S dng phm tm dng [Back light Brightnes] nhn phm ENT

4. S dng phm thay i Sng Ti [Bright] [Dark] nhn phm ENT

5. S dng phm tm dng [Backlight Auto-Off] nhn phm ENT

6. S dng phm thay i thi gian t ng tt [Automatic Turn-off Interval] phm ENT


tt ngun sng mn hnh tc thi ta ch vic nhn vo nt [Light]

Trong trng hp my gn ht pin v n sng, lc ny my s khng cho php bt n mn hnh.

Dng cc phm

chn n mc [Backlight Brightness]

Nhn phm ENT

hin ln

S dng cc phm chn n mc cn thit v nhn ENT

Dng cc phm

chn n mc [Backlight Auto-

Off] v nhn ENT hin ln

S dng cc phm chn n mc cn thit v nhn ENT

Ci t knh ph

s dng knh ph ta phi ci t trn my


2. S dng phm tm dng [Measurement] nhn phm ENT (mn hnh o s hin th)

3. S dng phm tm dng [Sub Channel] nhn phm ENT (mn hnh knh ph s hin th)

4. S dng phm v ENT bt knh ph ON

5. S dng phm v ENT t cc gi tr tnh nng tn s m thanh v thi gian

6. Nhn phm MENU quay li mn hnh trc

Nhn phm START/STOP quay li mn hnh o


Chn [SUB Channel] Hin ON/OFF bng cch

nhn phm ENT hoc Dng cc phm chn ON Nhn Phm ENT

Cng tng t nh vy thit lp cc thng s: [Frequency weighting

(SUB)]

[Time weighting (SUB)]

[Lpeak/Ltm5]

Ch

Knh ph khng c chc nng phn tch tn s. Ch c th truyn tt c gi o

Ci t ch o

My NA-28 c cc kiu o khc nhau: o theo thi gian (time-controlled triggering), o theo mc cng (Sound level controlled triggering), o theo tn hiu bn ngoi (Triggering by an external signal)

o theo thi gian: Php o iu khin bi ci t thi gian Start/Stop

Ch ci t [Seting]

t thi gian bt u o v kt thc o (Trigger start time, Trigger stop time)

Khong o (Trigger interval): OFF, 5, 10, 15, 30 (pht), 1, 8, 24 (gi)

Ch ng: ON, OFF

Mc o 1:

Php o c thc hin khi c mc tn hiu m thanh vt qu mc ci t v dng theo thi gian t trong my.

Ch ci t [Seting]

t ngng o (Trigger level): 25 n 130 dB, vi bc thay i 1 dB


Khong o (Trigger bands): MAIN AP/SUB AP/16 Hz/31.5 Hz/63 Hz/125 Hz 16 kHz (1/3 octave bands)

dc (Slope): +, -

Mc o 2:

Php o c thc hin khi c mc tn hiu m thanh vt qu mc ci t trong my.

Ch ci t [Seting]

t ngng o (Trigger level): 25 n 130 dB, vi bc thay i 1 dB

Khong o (Trigger bands): MAIN AP/SUB AP/16 Hz/31.5 Hz/63 Hz/125 Hz 16 kHz (1/3 octave bands)

o theo tn hiu bn ngoi

Php o c thc hin khi c tn hiu logic bn ngoi qua cng nhn tn hiu.

t thi gian o

o t ng 1


2. S dng phm tm dng [Store] nhn phm ENT

3. S dng phm tm dng [Store Mode] nhn phm ENT

4. S dng phm tm dng [Auto] nhn phm ENT


6. S dng phm tm dng [Measurement] nhn phm ENT

7. S dng phm tm dng [Trigger Mode] nhn phm ENT

8. Mn hnh t thi gian o s hin th, nhn phm [Trigger Mode] mt ln na v bm ENT

9. S dng phm la chn thi gian [Time] v bm ENT

10. S dng phm la chn [Trigger Time]. Sau phm v ENT t Thng, Ngy, Gi, Pht

11. S dng phm t gi tr thi gian ny v bm ENT

12. Tng t nh vy ta cng t thi gian kt thc o




o t ng 2


2. S dng phm tm dng [Store] nhn phm ENT

3. S dng phm tm dng [Store Mode] nhn phm ENT

4. S dng phm tm dng [Auto 2] nhn phm ENT




8. Mn hnh t thi gian o s hin th, nhn phm [Trigger Mode] mt ln na v bm ENT


10. S dng phm la chn [Trigger Time]. Sau phm v ENT t Thng, Ngy, Gi, Pht

11. S dng phm t gi tr thi gian ny v bm ENT

12. Tng t ta t thi gian kt thc o [Trigger Stop Time]

Ch

Nu thi gian dng o sm hn cng hoc sm hn thi gian bt u o, thi gian kt thc o s khng ng. m bo thi gian kt thc o l sau thi gian bt u o

13. t khong thi gian o mt cch tng t



Ch ng

cc ch o t ng 1 v o t ng 2, ta c th t ch ng tit kim nng lng pin.

Khi kch hot ch ng, my s t ng chuyn v ch ch trc khi o. Lc ny n mn hnh s tt, n led mu xanh nhy 5 giy mt ln v nng lng in tiu th s gim khong 1/3.

Mt pht trc khi o my s t ng kch hot ln ch hot ng v chun b o.

kim tra ch ng c kch hot khng, ta nhn mt phm bt k ngoi tr phm POWER. Lc ny n mn hnh s sng v sau tt i. ch ng th


n mn hnh tt, cc cng AC, DC, USB, iu khin t xa, chc nng so snh s khng kch hot. s dng mt trong cc chc nng ny ta phi tt chc nng ng OFF

Trong ch ch, mn hnh hin th lu kt qu Store name, thi gian bt u o Trigger Start Time, thi gian kt thc o Tringger Stop Time v khong o Interval Time

Nu ta khng t ch ng th my s tiu th in bnh thng mc d n t chuyn sang ch ch.

1. La chn phm o [Measurement] t mn hnh danh mc v bm ENT


3. Mn hnh o s hin th, nhn phm [Trigger Mode] mt ln na v bm ENT


5. S dng phm la chn ch ng [Sleep Mode] v bm phm hoc ENT

S dng phm bt ch ng ON

6. Nhn phm MENU vi ln quay li mn hnh o

Mn hnh thc n Measurement-Trigger

Chn Time l ch o


Chn ch ng thnh ON

Trong ch ch sn, n LED s nhy mu xanh nhau quy trnh nh sau


t ch o theo cng m thanh.





5. S dng phm tm dng [Level] v bm phm ENT

Mc 1: Php o s thc hin khi ngng m thanh vt ngng ci t v dng khi thi gian o kt thc

Mc 2: Php o s thc hin khi ngng m thanh vt ngng ci t

6. S dng phm la chn ngng m thanh [Trigger Level] v phm hoc ENT t gi tr t 25 n 130 dB, nhn ENT

7. Tng t ta t khong o [Trigger Band] v bm ENT

8. Khi t theo mc 1, ta cn t dc +/- Slope

Khi t theo mc 2 ta khng cn t Slope

Sau khi vic t kt thc, ta nhn phm ENT


Nhn phm START/STOP quay li mn o

o theo tn hiu bn ngoi





5. S dng phm tm dng [EXT.] nhn phm ENT





Cng ra so snh

y l cng xut tn hiu c s dng vi thit b ngoi vi

1. Nhn phm MENU hin th danh mc cc chc nng

2. S dng phm tm dng [I/O (Input.Output)] nhn phm ENT

3. S dng phm tm dng [Comparator] nhn phm ENT

4. Lc ny ca s chc nng so snh s hin ra

4.1.1 S dng phm tm dng [Comparator] nhn phm hoc ENT hin th dng ON/OFF. S dng phm chn ON v bm ENT

4.1.2 Tng t nh vy, ta la chn mc so snh [Comparator level] vi cc mc khc nhau t 25 n 130 dB vi bc thay i 1dB v bm ENT

4.1.3 Tng t nh vy, ta la chn di so snh [Comparator band] vi cc mc khc nhau (SUB AP/MAIN AP 12,5Hz/16Hz/20Hz/25 Hz 20kHz, 1/3 octave bands) v bm ENT




Chn mc [Comparator]

Hin ON/OFF bng cch nhn phm ENT

hoc Dng cc phm

chn ON Nhn Phm ENT

Cng tng t nh vy thit lp cc thng s: Comparator level

Comparartor band

Mn hnh thc n I/O (vo/ra)

Mn hnh thc n I/O- Comparator

Di so snh

S dng phm tm dng di so snh [Comparator band] nhn phm ENT. Ca s di so snh s hin th ra.

S dng phm t thng s cho di ny v nhn phm ENT

Khi cn nhanh mn hnh ci t cho di so snh ta nhn v gi phm .

Mn hnh thc n I/O- Comparator

V cng ra so snh

Khi knh ph tt [OFF], th chc nng so snh khng kch hot nu nh knh ph c la chn thnh di so snh

Tng t nh vy nu chc nng o c ci t ng thi di octave, 1/3 octave v di so snh c t 16 kHz hoc 20 kHz th chc nng so snh s khng c kch hot

Tn hiu theo thi gian c th hin nh hnh sau:


Chn ngn ng hin th

Ngn ng hin th cho my c la chn nh sau

1. Nhn phm MENU hin th danh mc cc chc nng

2. S dng phm tm dng [System (Language)] nhn phm ENT

3. S dng phm tm dng [Language] nhn phm v sau l phm la chon ngn ng cho my

4. Nhn phm ENT chp nhn ngn ng cho my

5. Nhn phm START/STOP quay li mn hnh o

Ngn ng hin th c ci cho my v hin th ra khi ta bt li my.

Mn hnh thc n h thng

Chn ngn ng v nhn ENT


Hiu Chun li my

Trc khi my c em ra s dng, ta phi hiu chun li my. C hai cch hiu chun c gi l hiu chunin t s dng tn hiu in bn trong my chun v hiu chunbng m thanh s dng thit b ngoi vi pht m thanh chun hiu chun.

Hiu chun in t

Hiu chun bng cch s dng tn hiu (1kHz, sinusoidal wave) c sn bn trong my.

1. Nhn phm ngun POWER bt thit b

2. S dng phm FREQ WEIGHT t ch o theo tn s A (ci t ny khng th hin trong mn hnh chun ha)

3. S dng phm t thng s ln mc cao nht ca di cng m thanh 120dB

4. Nhn phm hiu chunCAL. Mn hnh sau s hin th

Nu gi tr cng cha t ln 120 dB th mn hnh ca my s hin th gi tr cng thp -6 dB v gi tr cn hiu chun s nhp nhy gi tr 114 dB.

Nu dng ch chn ngoi Acoustic Calibration hin th pha di mn hnh th ta phi nhn phm [STORE], lc ny mn hnh s hin th dng ch chun ni [Internal Calibration]

5. S dng phm t thng s cng m thanh ln 114dB

6. Khi chn ha cng m thanh 114 dB kt thc ta nhn phm CAL thm mt ln na, lc ny mn hnh s tr v ch o.

o theo tn s A

Hin th mc n

Mc gii trn

Phi hin ra Internal Calibration

Hin th gi tr hiu chun Nu mc gii hn trn khng vt qu 120dB, [Level range upper limit -6dB] nhp nhy

Dng cc phm iu chnh [Level range upper limit -6DB] (trong trng hp ny l 114.0dB)


Tn hiu ra cho hiu chunbng thit b ngoi vi

Khong cng hiu chunthng thng t mc cao nht 120 dB nhng trong ch chun ngoi ta c th t thng s theo thit b pht ra m chun ngoi vi xx dB.

Gi tr hin th ca cng m thanh lun nh hn gi tr cc i ca ton di l 6 dB

S dng gic cm ngun AC hay DC cho tn hiu ra, vic hiu chunc thc hin nh sau

1. Nhn phm CAL

2. S dng phm t thng s cng m thanh vi bc thay i -6 dB

Tn hiu hiu chunc nhp vo qua cng AC OUTPUT v DC OUTPUT nm pha y ca my.

3. Nhn phm CAL thm mt ln na, lc ny mn hnh s tr v ch o.

Chun ngoi vi thit b pht m thanh chun NC-74

chun ngoi, thit b chun c lp vi my o ti microphone bng b ni, gi tr cng m thanh s c hiu chunthng qua p lc m thanh nn vo microphone.

1. Tt thit b chun ngoi vi NC-74

2. Bt my NA-28

3. Trn mn hnh, s dng phm FREQ WEIGHT t ch o theo tn s ti knh chnh A

4. S dng phm t thng s ln mc cao nht ca di cng m thanh 120dB

5. Gn u ni inch gia my v thit b chun m thanh NC-74

6. a microphone mt cch cn thn v t t vo trong khu ni

7. Bt cng tc ngun ca NC-74

8. Bm phm CAL. Nu nh dng ch chun ni Internal Calibration xut hin pha di mn hnh th nhn phm STORE chuyn sang ch chun ngoi Acoustic Calibration

9. S dng phm t cng m thanh cn chun ca NA-28 nh sau

m thanh chun NC-74: 94.0 dB

10. Nhn phm CAL, mn hnh s tr v ch o.

11. Tt thit b chun NC-74 v my NA-28.


12. Tho t t microphone ra khi b ni.

Tt v bt my

Bt my

Bm v gi phm POWER trn thit b n khi mn hnh sng ln, nh tay bm. Lc ny my bt u khi ng vo ch o.

Lc khi ng my, n led trn mn hnh s nhp nhy t mu xanh da tri, mu xanh l cy n mu .

Tt my

Nhn v gi phm POWER n khi mn hnh xut hin dng ch tt my Power off, nh tay ra khi phm POWER.

Ch bt

M khay cha pin, thng thng my c t trng thi A. Khi chuyn sang ch B th my NA_28 s t ng bt ngay khi ta c ngun in c cung cp qua cng ngun ngoi vi. Trong trng hp ny phm POWER s khng c tc dng.

Trong trng hp s dng my ch B ta phi b pin ra khi khay pin nm trong my.


Gii thch cc hin th

Hin th mc o m thanh

Hnh minh ha bn di y th hin tt c cc thng s hin th, ch dnh cho mc ch gii thch thng s. Trong hot ng thc t, th giao din ny s khng hin th v kch thc, phng c hin th thc t s hi khc mt cht.

Bt b so snh, mc so snh

Khi chc nng b so snh c bt (ON), mc so snh c hin th nh 1 di mu cam trn thanh cng c. Khi mt tn hiu vt qu mc, s ch th (Comp) xut hin v mt tn hiu c truy xut t ng COMP OUT trn ming y (m b thu).

S ch th vic chn th CF

Th hin khi th CF c chn vo my.


Dung lng cn li ca th CF

Th hin dung lng cn li ca th CF c chn vo.

a ch

Th hin a ch b nh hin ti. Trong ch lu tr bng tay, s ch th l mu nu l d liu trong a ch . Trong ch t ng, vng lu tr c th hin.

Ch lu tr

Th hin cc ch c la chn lu tr d liu trong b nh (Bng tay, t ng 1, t ng 2).

Thang o mc

Th hin cc mc cao hn hay thp hn ca thanh cng c c th chuyn vi cc phm tam gic LEVEL ln/xung.

Thanh cng c

Th hin mc m thanh nh 1 s ch th. (Vic hin th c cp nht theo tng 100 mili giy).

S ch th qu ti

Khi 1 hin tng tn hiu qu ti c pht hin, s ch th OVER (ch mu trng trn nn en) c hin th t nht khong 1 giy. Nu s ch th xut hint thng xuyn, s dng cc phm LEVEL ln/xung tng mc ca khong ci t.

Nu qu trnh s liu c cha tn hiu qu ti, s ch th OVER cng hin ra. Trng hp ny gi trn hin th cho n khi qu trnh o sau c bt u.

S ch th di khong o

Khi 1 tn hiu trong iu kin di khong o c pht hin, s ch th UNDER (ch mu trng trn nn en) c th hin. Nu s ch th ny xut hin thng xuyn, dng cc phm LEVEL ln/xung gim cc mc ca khong ci t.

Nu qu trnh s liu c cha tn hiu di khong o, s ch th UNDER cng hin ra. Trng hp ny gi trn hin th cho n khi qu trnh o sau c bt u.

Lu : Khi knh ph c ci t l ON, vic ch th c da trn gi tr o m tn s trong knh m gii hn php o l thp hn.


Khi qu trnh m A v qu trnh m C, hoc qu trnh m A hoc qu trnh m Z c la chn (trong c cc knh khc), s ch th di khong o trn cc gi tr php o m A.

Khi qu trnh m C v qu trnh m Z c la chn s ch th di khong o trn cc gi tr php o m C.

Knh chnh hin th mc

Hin th mc o m o c trong knh chnh (S hin th c cp nht tng giy).

Knh hin th mc ph

Hin th mc m o c trong knh ph (S hin th c cp nht tng giy).

Ngy gi hin ti

Hin th ngy gi.

Kha phm.

Gi phm GRP/NUM v phm MENU ng thi kch hot kha phm. m kha th lp li thao tc trn 1 ln na.

Trng thi pin

Khi my c hot ng trn ngun pin, bn c th thng xuyn kim tra iu kin ny. S vch mu xanh lam s gim khi pin gim. Khi s ch th nhp nhy (mu ) th cn thay pin hoc sc.

Khi my c dng in trc tip th s c k hiu ca phch cm in hin th ra.

iu khin ON

S ch th ny c hin th khi iu khin hng ngoi my c kch hot.


Trng thi kt ni USB

Khi my c kt ni vi USB nh 1 a ngoi, k hiu ny s c hin th l mu xanh lam. Khi vic kt ni USB c bt, th k t ny l mu xanh lc.

Knh ph m thi gian

Ch th trn knh ph cc k t m thi gian.

F (nhanh), S: chm, : 10ms, I: xung

Knh ph m tn s

Ch th trn knh ph cc k t m tn s.

A: qu trnh m A, C: qu trnh m C, Z: qu trnh m Z (p ng thp).

K t php o trong qu trnh tin hnh.

Khi php o c tin hnh, k t nhp nhy. n LED cng nhy mu xanh lc.

Trong sut qu trnh t ng lu tr, cng nhy. n LED cng nhy mu .

Trong sut qu trnh ch, c hin th.

Trong sut qu trnh tm dng, ll c hin th v n mu lam.

Thi gian tri qua

Hin th thi gian tri qua trong tng giy sut qu trnh o v nh.

Hi phc xa ON

Ch ra chc nng ly li ci xa khi n c bt (ON).

Ci t thi gian o.

Ch ra thi gian php o c ci t vi menu. Khong ci t thch hp l 1 giy ti 1000 gi.

Tuy nhin, thi gian o ti a l 24h khi ch lu tr l Bng tay (Manual) hoc T ng 2 (Auto2).

Ch phn tch

Ch ra iu kin mn hnh hin th


SLM: Hin th php o mc m

OTC: Mn hnh phn tch di Octave (qung 8)

1/3OCT: Mn hnh phn tch di 1/3 Octave (1/3 qung 8)

OTC&1/3OCT: Mn hnh phn tch ng thidi Octave (qung 8) v 1/3 octave (1/3 qung 8).

Hiu chnh mn hnh chn gi

K t [WS OFF] hin th vic tt s hiu chnh mn chn gi.

K t [WS ON] hin th vic bt s hiu chnh mn chn gi.

Ch c gt

iu khin php o v lu tr. Ph hp l Level1, Level2, Time v EXT.

Hiu chnh khuych tn m

Ch th rng my c ci t cho php o trong 1 trng (iu kin) khuch tn.

Mn hnh phn tch

Mt v d cho mn hnh phn tch OCT & 1/3OCT c biu din di y:

Dng cc phm tam gic sang tri/sang phi di chuyn con tr ti mc tiu tn s.


Mn hnh hin th thi gian/mc T-L (Time/Level)

V d cho mn hnh hin th 1/3 OCT:

Mn hnh hin th s hc

Cc v d cho mn hnh hin th s hc ca OCT., 1/3OCT. v OCT&1/3OCT c biu din nh sau:


Tin nhn ch th

Khi cc phm nh START/STOP hoc STORE c bm, cc tin nhn nh sau s c hin ra khong 1 giy.

Mn hnh danh sch Menu

Nhn phm MENU s hin ra giao din nh sau. Dng cc phm tam gic ln/xung/tri phi chn menu mong mun v nhn ENT vo.


H thng

Dng cc phm tam gic ln/xung/tri phi chn h thng [system] v nhn ENT.

CF Card Format OFF/EXEC. (c th c chn khi CF card c cm vo).

1. Dng cc phm tam gic ln/xung chn [CF card Format] v nhn ENT.

2. Dng cc phm tam gic ln/xung chn EXEC. V bm ENT.

Ci t c v lu

Chuyn con tr ti [Read/Save setting] (ci t c/lu) v bm phm ENT, mn hnh Ci t h thng [System-Setting] xut hin.


Ci t thi gian

Chuyn con tr n [Time Setting] (ci t thi gian) v bm phm ENT, mn hnh ci t thi gian h thng xut hin.


Thng tin chng trnh

Chuyn con tr n [Program Information] (thng tin chng trnh) v bm phm ENT, mn hnh thng tin chng trnh h thng xut hin.

Hin th

Dng cc phm tam gic trn di tri phi chn [display] (hin th) v bm ENT. Mn hnh menu hin th s xut hin.

MAX Hold ON/OFF

Leq ON/OFF

LE ON/OFF

Lmax ON/OFF

Lmin ON/OFF

LN1 (L01 n L99) ON/OFF





List ON/OFF

Time-Level ON/OFF

t gi tr L01 n L99 cho LN1 n LN5, dng cc phm tam gic ln/xung thay i cc gi tr v bm ENT chp nhn.

Khi bm ENT ln tip theo, ON/OFF c hin th.


Dng cc phm tam gic ln xung chn ON/OFFv bm ENT xc nhn.

Lu : Danh sch ch thch hp vi ch o mc m.

Input/Output (ng vo/ra)

Dng cc phm tam gic ln xung tri phi chn [I/O Input/Output] v bm ENT.Mn hnh xut hin.

AC out OFF/MAIN/SUB

DC out OFF/MAIN/SUB

B so snh ON/OFF

Kt ni USB ON/OFF

sng mn hnh Sng/ti

T ng tt n 30s/3m/Cont

Beep ON/OFF

Mc lc 1 n 255 (s qu trnh n v xc nh khi nhiu n v c dng.

Bm ENT hin th ON/OFF/ect, dng cc phm tam gic ln xung phi tri v sau bm ENT.

Khi tin bp ku lc c bt, n lc kt thc php o s c ting bp di. Khi lu tr d liu hon thnh cng c 1 ting di 1 ting ngn.


Mc menu cc so snh tip sau

Dng cc phm tam gic ln xung di chuyn con tr ti [Comparator] (so snh) v sau bm ENT. Mn hnh tip sau xut hin:

So snh ON/OFF

Mc so snh 25 n 130 dB (tng bc dB)

Di so snh Ph AP/Chnh AP/12.5 Hz/16Hz/20Hz/25Hz/20kHz.


Lu tr

Dng cc phm tam gic ln xung phi tri chn [Store] v sau bm ENT. Mn hnh lu tr xut hin.

Ch lu tr Bng tay/t ng1/t ng2

Tn lu tr MAN_**** AU1_**** AU2_****

**** l 4 k t s t 0000 n 9999

Tn lu tr c c th c t khi th CF c cm vo.

Chu trnh ly mu (SLM/RTA) (ch hin trong ch t ng 1).

SLM: 100 ms (c nh)

RTA: 1 n 10ms (tng bc ms) 10 n 1000 (bc 10 ms)

Leq,1s

o mu


Dng cc phm tam gic ln xung phi tri chn [Measurement] (o mu) v sau bm ENT. Mn hnh o mu xut hin.

Hiu chnh mn hnh gi ON/OFF

Thi gian o T ng 1: 1s n 1000 h

T ng 2 hoc o thng thng: 1s n 24 h

Hi phc xa OFF/5s

Thi gian tr 0 n 10s

Lmax/Lmin Di/AP/AP(S) (ch c th chn trong ch phn tch).

Ch c gt OFF/Level1/level2/time/EXT.

Hiu chnh trng khuych tn ON/OFF

Sub Chanel ON/OFF

Ch LN Lp/Leq, 1s

Cp menu ch c gt tip sau

Dng cc phm tam gic ln xung chn [Trigger Mode] (ch c gt) v sau bm ENT. Mn hnh xut hin.

Ch c gt thch hp ci t l Mc 1, Mc 2, thi gian v EXT.


Mc 1

Cc i tng ci t

Mc c gt 25 n 130 dB, bc 1dB

Di c gt Chnh AP/Ph AP/12.5Hz/16Hz/20Hz/25Hz v 20kHZ (di 1/3 Octave)

nghing +/-

Mc 2

Cc i tng ci t

Mc c gt 25 n 130 dB, bc 1dB

Di c gt Chnh AP/Ph AP/12.5Hz/16Hz/20Hz/25Hz v 20kHZ (di 1/3 Octave)

Thi gian

Cc i tng ci t

Thi gian bt u gt c, thi gian dng gt c

Thi gian ni: OFF, 5, 10, 15, 30 (pht); 1, 8, 24 (gi)

C th ci khi ch l t ng 2

Ch ng ( ch): ON/OFF

EXT.

Chn ci ny dng 1 ch c gt m rng.

Cp menu knh ph tip theo

Dng cc phm tam gic ln xung chn [Sub channel] (knh ph) v sau bm ENT. Mn hnh xut hin.


In

Dng cc phm tam gic ln xung tri phi chn [Print] (ch in) v sau bm ENT. Mn hnh xut hin.

mn hnh gi li, c th chn 1 khong cho ng thi qu trnh in ca d liu nhiu a ch. Tuy nhin, nh dng in s ph thuc trn mn hnh m c biu din ti cui thi gian in, nh bng lit k sau y:

Hin th s hc Hin th th Hin th T-L

SLM --------- Khong/danh sch in Bn cng

RTA Khong/danh sch in Khong/bn cng Bn cng

Gi li

Dng cc phm tam gic ln xung tri phi chn [recall] (gi li) v sau bm ENT. Danh mc chn file xut hin.


Menu danh sch cc i tng


H thng nh dng th CF Ci t c/Lu ---------------Ti mc nh Lu nhm cho th CF --------- Danh sch ci t nhm cho th CF Ti/Xa nhm cho th --------- Danh sch ci t nhm cho th CF Ci t thi gian -------------- Nm, thng, ngy, gi, pht, giy. Thng tin chng trnh ------ Model, phin bn Ngn ng Kch thc CF Hin th Cc mc: MAX Hold, Leq, LE, Lmax, Lmin, LN1, LN2, LN3, LN4, LN5, danh sch, thi gian I/O (u vo/u ra) AC ra (u ra in xoay chiu) DC ra (u ra in mt chiu) So snh ----------------- So snh ON/OFF, mc so snh, di snh Kt ni USB iu khin sng nn sng nn t ng tt Ting Bp Mc lc Lu tr Ch lu tr Tn lu tr Chi trnh lu tr o c Hiu chnh mn hnh chn gi Thi gian o Hi phc xa Thi gian tr Dng Lmax/Lmin Ch c gt ----------------- OFF, mc 1, mc 2, thi gian EXT. Hiu chun trng khuych tn Knh ph --------------- o knh ph ON/OFF, m tn s, m thi gian, Lpeak/Ltm5

In

Mn hnh bt/tt in ra Gi li

Goi li danh sch d liu


* Chu trnh ly mu Ch SLM: 100ms

Ch RTA: 1 n 10ms (bc 1 ms), 10 n 1000 (bc 10

ms), Leq,1 giy.

o mu

Khi dng NA-28 trong 1 ch khc m o mc m, tt c cc chc nng qu trnh cung cp bng n v (Leq, LE, Lmax, LN) c kim sot ng thi. (Tuy nhin, cho knh ph ch thm chc nng qu trnh ci bt (ON) trong menu mn hnh c ch ra). V d, khi php o mc m cn bng lin tc c chn, mc m l ra v mc phn trm cng c xc nh. Tuy nhin, phn trm thi gian ci t cho mc phn trm (5 mc) phi c chn trc . Cng nh vy, phi chc rng ngy v gi c ci ng nh m t trang 19 n trang 20.

o mc m

Quy trnh cho php o mc m c m t di y.

Nhng vic chun b nh m t trong chng nhng s chun b phi c hon thnh trc.

1. Bm phm POWER bt my

Sau khi bt mn hnh o xut hin. Cc ci t thng s o m c kch hot trc khi tt my ln trc s c thit lp li. Theo hin th thc c th lun khng ging ht nhau.


2. Dng phm m tn s (PREQ WEIGHT) chn k t m tn s, cc php o mc m thng thng th chn A.

Khi LZ (ging) c chn, mc m t 10Hz n 20 kHz c o vi cc k t m ging.

Khi LC c chn, mc m t 31,5 Hz n 8 kHz c o vi cc k t m ging.

ci t cc k t m tn s cho knh ph, dng mn hnh menu hoc bm phm PREQ WEIGHT trong khi gi phm MENU.

3. Dng phm m thi gian (TIME WEIGHT) chn cc k t m thi gian (ng), v d cc php o mc m thng thng, chn F (Fast: nhanh).

Khi cc php o tin hnh trong vic tun theo IEC hoc cc tiu chun khc, ci cc k t m tn s, m thi gian c yu cu bi chun.

ci cc thng s m thi gian cho knh ph, dng menu screen hoc bm TIME WEIGHT trong khi gi MENU

4. Dng cc phm LEVEL tam gic ln xung ci t khong mc. chn 1 ci t trong thanh th ch th cc ng k nm gia khong. Nu nhng ch th OVER (qu) hoc UNDER (di) xut hin thng xuyn, nn thay i li cc mc ci t khong.

5. Bm START/STOP bt u php o. Php o trong qu trnh k hiu nhp nhy v n LED ch th nhy mu xanh lc.

6. S ch th biu din mc thanh c o hin ti (mc p sut m). Vic c c cp nht mi giy 1 ln. Phm PAUSE/CONT c th c dng dng v tng kt qu trnh cp nht ca s ch th mc. Trong ch o mc m, thanh trn th cng s c cp nht sut qu trnh dng. Trong iu kin dng, k t (ll) xut hin v n LED nhy xanh lam.


Quan trng: Trong sut php o mc m, khng c bm phm MODE nu khng th cc kt qu qu trnh khc s hin ra. Mc m s c hin th khi khng chui k t sau s ch th c bn. LAF: mc m c hin th. LAeq: mc m khng c hin th. Trong qu trnh o, cc phm LEVEL hnh tam gic ln xung, phm m tn s (PREQ WEIGHT) v phm m thi gian (TIME WEIGHT) u c nh du.

Lu : Khi ci t cc k t m cho knh ph vi cc phm m tn s v m thi gian trong khi vn gi phm MENU, vic thay i ci t lin tc vi vic gi phm MENU l khng th thc hin. B cc phm v bm chng li ln na ci t mi.

o mc m cn bng lin tc (LAeq)

Quy trnh cho vic o mc m cn bng lin tc c m t di y.

1. Bt my ln.

2. Dng phm PREQ WEIGHT chn k t m tn s. Cc php o thng thng, chn A (m A). Khi chn C (m C) c chn, mc p sut m cn bng lin tc (LCeq) c o.

3. Dng phm TIME WEIGHT chn k t m thi gian. Thng thng, chn ci t F (Fast). (Ci t ny khng nhr hng 1 kt php o ca mc m cn bng lin tc).

Lu : NA-28 hon thin vic ly mu tc cao ca dng sng m (15.6s; 20.8s khi php phn tch octave v 1/3 octave c hon thin ng thi) xc nh Leq v LE. Theo khng c tc ng bng cc k t m thi gian.

4. Dng cc phm LEVEL tam gic ln xung chn khong mc. Chn t trong thanh th ch th cc ng k nm gia khong. Nu nhng


ch th OVER (qu) hoc UNDER (di) xut hin thng xuyn, nn thay i li cc mc ci t khong.

5. bit thng tin v lm th no lu tr d liu, tham kho thm trang 86.

6. t thi gian o t MENU. Bm MENU ti mn hnh menu.

7. Dng cc phm tam gic ln xung tri phi chn [Measurement] (o) v bm phm ENT. Mn hnh menu o xut hin.

8. Dng cc phm tam gic ln xung [Measurement Time] (thi gian o) v bm ENT.

9. Dng cc phm tam gic ln xung t thi gian o v bm ENT.


10. Bm phm MENU tr li mn hnh danh sch menu v dng cc phm tam gic ln xung tri phi chn [Display] (hin th). Bm phm ENT. Mn hnh menu xut hin.

11. Dng cc phm tam gic ln xung chn [Leq] v bm ENT.


12. Dng cc phm tam gic ln xung chn ON v bm ENT.

13. Bm phm START/STOP tr li mn hnh o. thm thng tin xin xem trang 80.

14. Bm phm START/STOP bt u php o. Ti im ny, cc gi tr php o trc b xa. Trong khi php o ang tin hnh k hiu nhy v thi gian cn c hin th. Khi thi gian php o t trong bc 9 cn li, php o c ngt t ng. ngt php o trc thi gian c ch nh, bm phm START/STOP.

Nu tn hiu vt ngng hoc 1 iu kin di khong xut hin t nht 1 ln sut php o, s ch th OVER hoc UNDER xut, ch th rng d liu vt ngng hoc di khong bao gm trong cc gi tr qu trnh.

Sut qu trnh o, phm PAUSE/CONT c th c dng dng v phc hi php o.

Quan trng: Sut qu trnh o cc phm LEVEL tam gic ln xung, phm m tn s (PREQ WEIGHT) v phm m thi gian (TIME WEIGHT) c nh du. Phm START/STOP, MODE, PAUSE/CONT, LIGHT u hot ng. Phi chc rng hon thnh tt c ci t trc khi bt u php o.

Nu chc nng hi phc xa c bt cc bc 7 v 8, dng mn hnh Time-Level (thi gian-mc) l thun tin. D liu b loi tr bng chc nng hi ph xa c ch ra nh sau:


15. Khi php o kt thc, dng phm Ch (MODE) bt hin th.

LAeq ngha l mc m cn bng lin tc c hin th. Nu LAeq khng c biu din, kim tra Leq c t ON trn mn hnh menu. Nu ch th OVER c hin ra th qu trnh d liu bao gm d liu m tn hiu mc m gy ra 1 iu kin qu ti. Nu ch th UNDER c hin ra th qu trnh d liu bao gm d liu m tn hiu mc m gy ra 1 iu kin di khong.

Lu : sut qu trnh o, bn c th dng phm MODE kim tra mc m cn bng lin tc nh c tnh ton hin ti. (p dng iu ny ch khi mc hin th s hc, thanh th mc m). Sau khi php o hon thnh, thay i m tn s (A/C/Z), m thi gian (nhanh/chm) hoc cc ci t khc n gi tr php o. Quay tr li cc ci t gc hin th li gi tr php o.

Php o mc m ni

Quy trnh cho php o mc m ni l tng t php o mc m cn bng lin tc, nhng i tng menu la chn li khc. S chun b c m t trong chng nhng s chun b phi c hon thnh u tin.

1. bit thm thng tin xin xem trang 86.

2. Bm MENU vo mn hnh danh sch menu.

3. Dng cc phm tam gic ln xung tri phi chn [Display] (hin th) ri bm ENT

4. Dng phm tam gic ln xung chn [LE] v bm ENT


5. Dng phm tam gic ln xung chn ON v bm ENT

6. Bm START/STOP tr li php o

7. Bm START/STOP bt u o. Trong khi php o tin hnh, k t nhy v thi gian cn li c hin th. Khi ci li thi gian o cn li, php o t ng kt thc. kt thc php o trc thi gian ch nh v bm START/STOP. Nu tn hiu qu ti hoc di khong xut hin t nht 1 ln trong php o, s ch th OVER hoc UNDER xut hin ch ra c bao gm trong qu trnh cc gi tr.

Sut php o, Phm PAUSE/CONT c dng tm dng v hi phc php o. (chc nng ny cng c trong chc nng thi gian o).

Quan trng: Sut php o cc phm LEVEL tam gic ln xung, phm PREQ WEIGHT (m tn s) v phm TIME WEIGHT (m thi gian) c nh du. Cc phm START/STOP, MODE, PAUSE/CONT v POWER c hot ng. Phi chc rng hon thnh tt c cc ci t trc php o.

8. Khi php o c hon tt dng phm MODE bt hin th.

LAE ngha l mc m ni c hin th. Nu LAE khng hin th th kim tra li xem n c bt hay khng.

Nu hin OVER th php o ang qu ti. Nu hin UNDER th php o ang b di mc t.

Lu : Sut php o, bn c th dng phm MODE kim tra mc m cn bng lin tc ang c tnh ton (ch p dng khi hin th mc s hc, mc m hin trn thanh th).

Nu php o hon thnh, i m tn s (A/C/Z), m thi gian (nhanh/chm) hoc cc ci t khc n gi tr o. Tr li cc ci t gc hin th li gi tr php o.


Php o mc m ti a (Lmax) v Mc m ti thiu (Lmin)

Quy trnh cho php o mc m ti a v mc m ti thiu tng t nh l php o mc m cn bng lin tc nhng khc cc i tng menu c chn.

Cc chun b c m t trong chng nhng s chun b phi c hon tt trc .

1. bit thm thng tin lm th no lu tr d liu, xin xem thm phn trang 86.

2. Bm MENU ti mn hnh danh sch menu.

3. Dng cc phm tam gic ln xung tri phi chn [display] (hin th) v bm ENT mn hnh menu hin ra.

4. Dng cc phm tam gic ln xung chn [Lmax] v bm ENT.

5. Dng cc phm tam gic ln xung chn [ON] v bm ENT.

6. Dng cc phm tam gic ln xung chn [Lmin] v bm ENT.

7. Dng cc phm tam gic ln xung chn [ON] v bm ENT.

Lu : o mnh Lmax hy kim tra Lmin c OFF. Cn o mnh Lmin th hy kim tra Lmax c OFF.

8. Bm START/STOP tr li mn hnh o.

9. Bm START/STOP bt u o.

Trong khi php o c tin hnh, k t c nhy v thi gian cn li hin th. Khi thi gian o c ci trc ht, php o t ng kt thc.

kt thc php o trc khi thi gian ch nh ht, bm START/STOP.

Nu tn hiu qu ti hoc di khong o xut hin t nht 1 ln trong php o, cc ch th OVER hc UNDER xut hin.


Sut php o, phm PAUSE/CONT c th c dng dng hoc hi ph php o.

Quan trng: Sut php o cc phm LEVEL tam gic ln xung, phm PREQ WEIGHT (m tn s) v phm TIME WEIGHT (m thi gian) c nh du. Cc phm START/STOP, MODE, PAUSE/CONT v LIGHT, POWER c hot ng. Phi chc rng hon thnh tt c cc ci t trc php o.

10. Khi php o kt thc, dng phm MODE bt hin th

LAmax v LAmin c ngha l ln lt cc gi tr mc m ti a, ti thiu c hin th.

Nu LAmax hoc LAmin khng hin, kim tra xem chng c c bt hay khng.

Nu hin OVER th php o ang qu ti, nu hin UNDER th php o ang di mc ci t.

Lu : Sut php o bn c th dng phm MODE kim tra mc m cn bng lin tc c tnh ton hin thi (ch p dng trong mc hin th s, thanh cng c ch ra mc m). Sau khi php o kt thc, thay i m tn s (A/C/Z), m thi gian (nhanh/chm) hoc cc ci t khc n gi tr php o. Quay li cc ci t gc hin th li gi tr php o. Khi bn bt u cc php o khc th cc gi tr LAmax v LAmin s b xa.

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