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Transmission Line
Twisted Pair Cabling Systems
Twisted Pair ParametersCable Category and PerformanceCabling DistanceConnector PerformanceSystem PerformancePerformance Testing
Twisted Pair Category and Transmission Performance
Transmission ParametersDC Resistance & DC Resistance UnbalanceCapacitance & Capacitance UnbalanceAttenuationCharacteristic ImpedanceStructural Return LossNEXT/FEXT/ELFEXT lossPair to PairPower Sum (CAT 5e & CAT 6)Propagation DelayDelay Skew (CAT 5e & CAT 6)
Horizontal Cabling Distance
Backbone Cabling DistanceVoiceDataCross-connect jumpers/patch cables = 20m
Telecommunications equipment cables = 30m
Attenuation Return Loss DC Resistance NEXT/ FEXT/ELFEXT Pair-Pair & Power Sum Propagation Delay & Delay Skew LCLConnecting Hardware
Cabling Practices Affecting PerformanceConnector Termination PracticesUse proper category of cable and matching componentsCategory 5 = < 13mm (0.5) amount of untwistStrip only enough cable jacket as necessaryPatch Cable and Connector ConsistencyUse of pre-terminated patch cables Cable Management PracticesEliminate cable stress caused by tension & cinchingKeep cable bend radii no less than 4 times the cable diameterNo more than 30 m or (2) 90 bends in a single conduit pull
Field Testing ParametersWire MapLengthPropagation DelayDelay SkewAttenuationNEXTPSNEXTACRPSACRFEXTELFEXTPSELFEXTReturn Loss
Wire Map12
36
54
7812
36
54
78Correct Pairs12
36
54
7812
36
54
78Split Pairs12
36
54
7812
36
54
78Reversed Pair12
36
54
7812
36
54
78Crossed Pairs
LengthMaximum Link Length 90 metersplus a maximum of 2 meters of test equipment patch cords at each endMaximum Channel Length 100 metersincluding equipment cords and patch cords
Nominal Velocity of Propagation (NVP)The speed at which a signal travels in a cable, expressed as a percentage of the speed of light in vacuum.Speed of light in vacuum is 300,000 km/s or 0.3 m/nsec
Length CalculationExample:measurement of Prop_delay: 435 nsecLength =Prop_delay (nsec) x NVP x Speed_of_LightNVP (%)Length (m)65.9867091.4
Propagation Delay and Delay Skew
Electrons travel at approx. constant speed( 20 cm or 8 per ns,1 ns = 0.000 000 0001 sNVP * speed of light)Propagation delayTraveling signals is like electrons following a somewhat rocky path
Delay SkewThe length of every electronic road in a cable is slightly different because of twist ratesBut every cable has at least 4 electronic highways
AttenuationCalculated Link Attenuation is the sum of the attenuation of:
cable segment all connecting hardware 10 m of patch cable for channel 4 m of patch cable for link
is represented by the electrons that get stuckAttenuationThere are potholes in the road.
Link Attenuation
attenuation
Link Attenuation
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
PDAM 3(Tokyo 92A)
Freq. (MHz)
1.002.12.52.12.12.11.9
4.004.04.84.14.03.93.5
8.005.7--5.75.5--
10.006.37.56.16.36.25.6
16.008.29.47.88.27.87.1
20.009.210.58.79.28.87.9
25.0010.3--10.39.9--
31.2511.513.11111.511.110
62.5016.718.41616.71614.4
100.0021.623.220.621.620.718.5
125.00--------20.9
155.52--------23.6
175.00--------25.2
200.00------30.427.1
250.00--------30.7
Channel Attenuation
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
PDAM 3(Tokyo 92A)
Freq. (MHz)
1.002.5--2.52.52.12.2
4.004.5--4.54.544.2
8.006.3----6.35.7--
10.007--776.36.5
16.009.2--9.29.288.3
20.0010.3--10.310.399.3
25.0011.4----11.410.1--
31.2512.8--12.812.811.411.7
62.5018.5--18.518.516.516.9
100.0024--242421.221.7
125.00----------24.5
155.52----------27.6
175.00----------29.5
200.00--------32.231.7
&A
NEXT
Link NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.006054.061.264.273.572.7
4.0051.845.051.854.864.163
8.0047.1----50.059.4--
10.0045.539.045.548.557.856.6
16.0042.336.042.345.254.653.2
20.0040.735.040.743.753.151.6
25.0039.1----42.151.5--
31.2537.632.037.640.65048.4
62.5032.727.032.735.745.243.4
100.0029.324.029.332.341.939.9
125.00----------38.3
155.52----------36.7
175.00----------35.8
200.00--------36.934.8
250.00----------33.1
Channel NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.0060.0--60.363.372.772.7
4.0050.6--50.653.663.163
8.0045.6----48.658.2--
10.0044.0--4447.056.656.6
16.0040.6--40.643.653.253.2
20.0039.0--3942.051.651.6
25.0037.4----40.450--
31.2535.7--35.738.748.448.4
62.5030.6--30.633.643.443.4
100.0027.1--27.130.139.939.9
125.00----------38.3
155.52----------36.7
175.00----------35.8
200.00--------34.834.8
250.00----------33.1
&A
PS NEXT
Link Power Sum NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----58.260.071.270.3
4.00----48.852.061.860.5
8.00------47.157--
10.00----42.545.655.554
16.00----39.342.252.250.6
20.00----37.740.750.749
25.00------39.149.1--
31.25----34.637.547.645.7
62.50----29.732.642.740.6
100.00----26.329.339.337.1
125.00----------35.4
155.52----------33.8
175.00----------32.9
200.00--------34.331.9
250.00----------30.2
Channel Power Sum NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----57.36070.370.3
4.00----47.650.960.660.5
8.00------45.755.6--
10.00----4144.15454
16.00----37.640.650.650.6
20.00----36394949
25.00------37.347.4--
31.25----32.735.745.745.7
62.50----27.630.640.640.6
100.00----24.127.137.137.1
125.00----------35.4
155.52----------33.8
175.00----------32.9
200.00--------31.931.9
250.00----------30.2
&A
ELFEXT
Link ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----59.660.065.264.2
4.00----47.648.053.252.1
8.00------41.947.1--
10.00----39.640.045.244.2
16.00----35.535.941.140.1
20.00----33.634.039.238.1
25.00------32.037.2--
31.25----29.730.135.334.3
62.50----23.724.129.328.2
100.00----19.620.025.224.2
125.00----------22.2
155.52----------20.3
175.00----------19.3
200.00--------19.218.1
250.00----------16.2
Channel ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----5757.463.263.2
4.00----4545.351.251.2
8.00------39.345.2--
10.00----3737.443.243.2
16.00----32.933.339.139.1
20.00----3131.437.237.2
25.00------29.435.3--
31.25----27.127.533.333.3
62.50----21.121.527.327.3
100.00----1717.423.223.2
125.00----------21.3
155.52----------19.4
175.00----------18.4
200.00--------17.217.2
250.00----------15.3
&A
PS ELFEXT
Link Power Sum ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----57.057.062.261.2
4.00----45.045.050.249.1
8.00------38.944.1--
10.00----37.037.042.241.2
16.00----32.932.938.137.1
20.00----31.031.036.235.1
25.00------29.034.2--
31.25----27.127.132.231.3
62.50----21.121.126.325.2
100.00----17.017.022.221.2
125.00----------19.2
155.52----------17.3
175.00----------16.3
200.00--------16.215.1
250.00----------13.2
Channel Power Sum ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----54.454.460.260.2
4.00----42.442.448.248.2
8.00------36.342.2--
10.00----34.434.440.240.2
16.00----30.330.336.136.1
20.00----28.428.434.234.2
25.00------26.432.3--
31.25----24.524.530.330.3
62.50----18.518.524.324.3
100.00----14.414.420.220.2
125.00----------18.3
155.52----------16.4
175.00----------15.4
200.00--------14.214.2
250.00----------12.3
&A
Return Loss
Link Return Loss
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Orlando 39A)(Orlando 39A)
Freq. (MHz)
1.00--18.017.017.019.019.0
4.00--18.017.017.019.019.0
8.00--18.017.017.019.019.0
10.00--15.017.017.019.019.0
16.00--15.017.017.019.019.0
20.00--15.017.017.019.019.0
25.00--10.016.316.318.318.3
31.25--10.015.615.617.617.6
62.50--10.013.513.515.515.5
100.00--10.012.112.114.114.1
125.00--------13.413.4
155.52--------12.812.8
175.00--------12.412.4
200.00--------1212
250.00--------11.311.3
Channel Return Loss
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Orlando 39A)(Orlando 39A)
Freq. (MHz)
1.00----17171919
4.00----17171919
8.00----17171919
10.00----17171919
16.00----17171919
20.00----17171919
25.00----16161818
31.25----15.115.117.117.1
62.50----12.112.114.114.1
100.00----10101212
125.00--------1111
155.52--------10.110.1
175.00--------9.69.6
200.00--------99
250.00--------88
&A
ACR
Link ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
Calculated(Tokyo 92A)
Freq. (MHz)
1.00----59.1----70.8
4.00--40.047.7----59.5
8.00------------
10.00--35.039.4----51.0
16.00--30.034.5----46.1
20.00--28.032.0----43.7
25.00------------
31.25--23.026.6----38.4
62.50--13.016.7----29.0
100.00--4.08.7----21.4
125.00----------17.4
155.52----------13.1
175.00----------10.6
200.00----------7.7
250.00----------2.4
Channel ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
Calculated(Tokyo 92A)
Freq. (MHz)
1.00----57.8----70.4
4.00----46.1----58.9
8.00------------
10.00----37----50.0
16.00----31.4----44.9
20.00----28.7----42.3
25.00------------
31.25----22.9----36.7
62.50----12.1----26.5
100.00----3.1----18.2
125.00----------13.8
155.52----------9.0
175.00----------6.3
200.00----------3.0
250.00-----------2.8
&CACR
PS ACR
Link Power Sum ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.00----56.1----68.4
4.00----44.7----57.0
8.00----------
10.00----36.4----48.4
16.00----31.5----43.5
20.00----29.0----41.0
25.00----------
31.25----23.6----35.7
62.50----13.7----26.2
100.00----5.7----18.6
125.00----------14.5
155.52----------10.2
175.00----------7.7
200.00----------4.8
250.00-----------0.5
Channel Power Sum ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.00----54.8----68.1
4.00----43.1----56.4
8.00----------
10.00----34----47.5
16.00----28.4----42.3
20.00----25.7----39.7
25.00------------
31.25----19.9----34.0
62.50----9.1----23.7
100.00----0.1----15.4
125.00----------10.9
155.52----------6.1
175.00----------3.4
200.00----------0.1
250.00-----------5.8
&A
Sheet9
&A
Page &P
Sheet10
&A
Page &P
Sheet11
&A
Page &P
Sheet12
&A
Page &P
Sheet13
&A
Page &P
Sheet14
&A
Page &P
Sheet15
&A
Page &P
Sheet16
&A
Page &P
Crosstalk!!A level problem in the electronic road will cause some electrons to fall on an adjacent roadOn top of that: the road is not level and electrons fly off!
NEXT Testing of NEXT shall be performed at both ends All pair combinations shall be measured
Near End Crosstalk is by the electrons that return back to the beginningNear End Crosstalk (NEXT)
Link NEXT
attenuation
Link Attenuation
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
PDAM 3(Tokyo 92A)
Freq. (MHz)
1.002.12.52.12.12.11.9
4.004.04.84.14.03.93.5
8.005.7--5.75.5--
10.006.37.56.16.36.25.6
16.008.29.47.88.27.87.1
20.009.210.58.79.28.87.9
25.0010.3--10.39.9--
31.2511.513.11111.511.110
62.5016.718.41616.71614.4
100.0021.623.220.621.620.718.5
125.00--------20.9
155.52--------23.6
175.00--------25.2
200.00------30.427.1
250.00--------30.7
Channel Attenuation
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
PDAM 3(Tokyo 92A)
Freq. (MHz)
1.002.5--2.52.52.12.2
4.004.5--4.54.544.2
8.006.3----6.35.7--
10.007--776.36.5
16.009.2--9.29.288.3
20.0010.3--10.310.399.3
25.0011.4----11.410.1--
31.2512.8--12.812.811.411.7
62.5018.5--18.518.516.516.9
100.0024--242421.221.7
125.00----------24.5
155.52----------27.6
175.00----------29.5
200.00--------32.231.7
&A
NEXT
Link NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.006054.061.264.273.572.7
4.0051.845.051.854.864.163
8.0047.1----50.059.4--
10.0045.539.045.548.557.856.6
16.0042.336.042.345.254.653.2
20.0040.735.040.743.753.151.6
25.0039.1----42.151.5--
31.2537.632.037.640.65048.4
62.5032.727.032.735.745.243.4
100.0029.324.029.332.341.939.9
125.00----------38.3
155.52----------36.7
175.00----------35.8
200.00--------36.934.8
250.00----------33.1
Channel NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.0060.0--60.363.372.772.7
4.0050.6--50.653.663.163
8.0045.6----48.658.2--
10.0044.0--4447.056.656.6
16.0040.6--40.643.653.253.2
20.0039.0--3942.051.651.6
25.0037.4----40.450--
31.2535.7--35.738.748.448.4
62.5030.6--30.633.643.443.4
100.0027.1--27.130.139.939.9
125.00----------38.3
155.52----------36.7
175.00----------35.8
200.00--------34.834.8
250.00----------33.1
&A
PS NEXT
Link Power Sum NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----58.260.071.270.3
4.00----48.852.061.860.5
8.00------47.157--
10.00----42.545.655.554
16.00----39.342.252.250.6
20.00----37.740.750.749
25.00------39.149.1--
31.25----34.637.547.645.7
62.50----29.732.642.740.6
100.00----26.329.339.337.1
125.00----------35.4
155.52----------33.8
175.00----------32.9
200.00--------34.331.9
250.00----------30.2
Channel Power Sum NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----57.36070.370.3
4.00----47.650.960.660.5
8.00------45.755.6--
10.00----4144.15454
16.00----37.640.650.650.6
20.00----36394949
25.00------37.347.4--
31.25----32.735.745.745.7
62.50----27.630.640.640.6
100.00----24.127.137.137.1
125.00----------35.4
155.52----------33.8
175.00----------32.9
200.00--------31.931.9
250.00----------30.2
&A
ELFEXT
Link ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----59.660.065.264.2
4.00----47.648.053.252.1
8.00------41.947.1--
10.00----39.640.045.244.2
16.00----35.535.941.140.1
20.00----33.634.039.238.1
25.00------32.037.2--
31.25----29.730.135.334.3
62.50----23.724.129.328.2
100.00----19.620.025.224.2
125.00----------22.2
155.52----------20.3
175.00----------19.3
200.00--------19.218.1
250.00----------16.2
Channel ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----5757.463.263.2
4.00----4545.351.251.2
8.00------39.345.2--
10.00----3737.443.243.2
16.00----32.933.339.139.1
20.00----3131.437.237.2
25.00------29.435.3--
31.25----27.127.533.333.3
62.50----21.121.527.327.3
100.00----1717.423.223.2
125.00----------21.3
155.52----------19.4
175.00----------18.4
200.00--------17.217.2
250.00----------15.3
&A
PS ELFEXT
Link Power Sum ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----57.057.062.261.2
4.00----45.045.050.249.1
8.00------38.944.1--
10.00----37.037.042.241.2
16.00----32.932.938.137.1
20.00----31.031.036.235.1
25.00------29.034.2--
31.25----27.127.132.231.3
62.50----21.121.126.325.2
100.00----17.017.022.221.2
125.00----------19.2
155.52----------17.3
175.00----------16.3
200.00--------16.215.1
250.00----------13.2
Channel Power Sum ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----54.454.460.260.2
4.00----42.442.448.248.2
8.00------36.342.2--
10.00----34.434.440.240.2
16.00----30.330.336.136.1
20.00----28.428.434.234.2
25.00------26.432.3--
31.25----24.524.530.330.3
62.50----18.518.524.324.3
100.00----14.414.420.220.2
125.00----------18.3
155.52----------16.4
175.00----------15.4
200.00--------14.214.2
250.00----------12.3
&A
Return Loss
Link Return Loss
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Orlando 39A)(Orlando 39A)
Freq. (MHz)
1.00--18.017.017.019.019.0
4.00--18.017.017.019.019.0
8.00--18.017.017.019.019.0
10.00--15.017.017.019.019.0
16.00--15.017.017.019.019.0
20.00--15.017.017.019.019.0
25.00--10.016.316.318.318.3
31.25--10.015.615.617.617.6
62.50--10.013.513.515.515.5
100.00--10.012.112.114.114.1
125.00--------13.413.4
155.52--------12.812.8
175.00--------12.412.4
200.00--------1212
250.00--------11.311.3
Channel Return Loss
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Orlando 39A)(Orlando 39A)
Freq. (MHz)
1.00----17171919
4.00----17171919
8.00----17171919
10.00----17171919
16.00----17171919
20.00----17171919
25.00----16161818
31.25----15.115.117.117.1
62.50----12.112.114.114.1
100.00----10101212
125.00--------1111
155.52--------10.110.1
175.00--------9.69.6
200.00--------99
250.00--------88
&A
ACR
Link ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
Calculated(Tokyo 92A)
Freq. (MHz)
1.00----59.1----70.8
4.00--40.047.7----59.5
8.00------------
10.00--35.039.4----51.0
16.00--30.034.5----46.1
20.00--28.032.0----43.7
25.00------------
31.25--23.026.6----38.4
62.50--13.016.7----29.0
100.00--4.08.7----21.4
125.00----------17.4
155.52----------13.1
175.00----------10.6
200.00----------7.7
250.00----------2.4
Channel ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
Calculated(Tokyo 92A)
Freq. (MHz)
1.00----57.8----70.4
4.00----46.1----58.9
8.00------------
10.00----37----50.0
16.00----31.4----44.9
20.00----28.7----42.3
25.00------------
31.25----22.9----36.7
62.50----12.1----26.5
100.00----3.1----18.2
125.00----------13.8
155.52----------9.0
175.00----------6.3
200.00----------3.0
250.00-----------2.8
&CACR
PS ACR
Link Power Sum ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.00----56.1----68.4
4.00----44.7----57.0
8.00----------
10.00----36.4----48.4
16.00----31.5----43.5
20.00----29.0----41.0
25.00----------
31.25----23.6----35.7
62.50----13.7----26.2
100.00----5.7----18.6
125.00----------14.5
155.52----------10.2
175.00----------7.7
200.00----------4.8
250.00-----------0.5
Channel Power Sum ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.00----54.8----68.1
4.00----43.1----56.4
8.00----------
10.00----34----47.5
16.00----28.4----42.3
20.00----25.7----39.7
25.00------------
31.25----19.9----34.0
62.50----9.1----23.7
100.00----0.1----15.4
125.00----------10.9
155.52----------6.1
175.00----------3.4
200.00----------0.1
250.00-----------5.8
&A
Sheet9
&A
Page &P
Sheet10
&A
Page &P
Sheet11
&A
Page &P
Sheet12
&A
Page &P
Sheet13
&A
Page &P
Sheet14
&A
Page &P
Sheet15
&A
Page &P
Sheet16
&A
Page &P
FEXTHUBNICrxrxtxtxTransmitted SignalCoupled Noise Testing of FEXT shall be performed at both ends All pair combinations shall be measuredAttenuated Signal
Far End Crosstalk is by the electrons that continue to the far endFar end crosstalk (FEXT)
Return Loss Typically attenuation caused by characteristics inherent in the cable, such as: impedance mismatches kinks in the cable poor construction
SpecificationsEffects of Return LossAttenuated SignalsTransmitted SignalsImpedance mismatch or variationReflected SignalsPair 1Pair 2Pair 3Pair 4A measure of the reflected transmit energy caused by impedance mismatches in the cabling systemsEspecially important in applications that use full duplex transmission schemes HUB
There are also bumps and dips in the road: return loss
Link Return Loss
attenuation
Link Attenuation
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
PDAM 3(Tokyo 92A)
Freq. (MHz)
1.002.12.52.12.12.11.9
4.004.04.84.14.03.93.5
8.005.7--5.75.5--
10.006.37.56.16.36.25.6
16.008.29.47.88.27.87.1
20.009.210.58.79.28.87.9
25.0010.3--10.39.9--
31.2511.513.11111.511.110
62.5016.718.41616.71614.4
100.0021.623.220.621.620.718.5
125.00--------20.9
155.52--------23.6
175.00--------25.2
200.00------30.427.1
250.00--------30.7
Channel Attenuation
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
PDAM 3(Tokyo 92A)
Freq. (MHz)
1.002.5--2.52.52.12.2
4.004.5--4.54.544.2
8.006.3----6.35.7--
10.007--776.36.5
16.009.2--9.29.288.3
20.0010.3--10.310.399.3
25.0011.4----11.410.1--
31.2512.8--12.812.811.411.7
62.5018.5--18.518.516.516.9
100.0024--242421.221.7
125.00----------24.5
155.52----------27.6
175.00----------29.5
200.00--------32.231.7
&A
NEXT
Link NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.006054.061.264.273.572.7
4.0051.845.051.854.864.163
8.0047.1----50.059.4--
10.0045.539.045.548.557.856.6
16.0042.336.042.345.254.653.2
20.0040.735.040.743.753.151.6
25.0039.1----42.151.5--
31.2537.632.037.640.65048.4
62.5032.727.032.735.745.243.4
100.0029.324.029.332.341.939.9
125.00----------38.3
155.52----------36.7
175.00----------35.8
200.00--------36.934.8
250.00----------33.1
Channel NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.0060.0--60.363.372.772.7
4.0050.6--50.653.663.163
8.0045.6----48.658.2--
10.0044.0--4447.056.656.6
16.0040.6--40.643.653.253.2
20.0039.0--3942.051.651.6
25.0037.4----40.450--
31.2535.7--35.738.748.448.4
62.5030.6--30.633.643.443.4
100.0027.1--27.130.139.939.9
125.00----------38.3
155.52----------36.7
175.00----------35.8
200.00--------34.834.8
250.00----------33.1
&A
PS NEXT
Link Power Sum NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----58.260.071.270.3
4.00----48.852.061.860.5
8.00------47.157--
10.00----42.545.655.554
16.00----39.342.252.250.6
20.00----37.740.750.749
25.00------39.149.1--
31.25----34.637.547.645.7
62.50----29.732.642.740.6
100.00----26.329.339.337.1
125.00----------35.4
155.52----------33.8
175.00----------32.9
200.00--------34.331.9
250.00----------30.2
Channel Power Sum NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----57.36070.370.3
4.00----47.650.960.660.5
8.00------45.755.6--
10.00----4144.15454
16.00----37.640.650.650.6
20.00----36394949
25.00------37.347.4--
31.25----32.735.745.745.7
62.50----27.630.640.640.6
100.00----24.127.137.137.1
125.00----------35.4
155.52----------33.8
175.00----------32.9
200.00--------31.931.9
250.00----------30.2
&A
ELFEXT
Link ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----59.660.065.264.2
4.00----47.648.053.252.1
8.00------41.947.1--
10.00----39.640.045.244.2
16.00----35.535.941.140.1
20.00----33.634.039.238.1
25.00------32.037.2--
31.25----29.730.135.334.3
62.50----23.724.129.328.2
100.00----19.620.025.224.2
125.00----------22.2
155.52----------20.3
175.00----------19.3
200.00--------19.218.1
250.00----------16.2
Channel ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----5757.463.263.2
4.00----4545.351.251.2
8.00------39.345.2--
10.00----3737.443.243.2
16.00----32.933.339.139.1
20.00----3131.437.237.2
25.00------29.435.3--
31.25----27.127.533.333.3
62.50----21.121.527.327.3
100.00----1717.423.223.2
125.00----------21.3
155.52----------19.4
175.00----------18.4
200.00--------17.217.2
250.00----------15.3
&A
PS ELFEXT
Link Power Sum ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----57.057.062.261.2
4.00----45.045.050.249.1
8.00------38.944.1--
10.00----37.037.042.241.2
16.00----32.932.938.137.1
20.00----31.031.036.235.1
25.00------29.034.2--
31.25----27.127.132.231.3
62.50----21.121.126.325.2
100.00----17.017.022.221.2
125.00----------19.2
155.52----------17.3
175.00----------16.3
200.00--------16.215.1
250.00----------13.2
Channel Power Sum ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----54.454.460.260.2
4.00----42.442.448.248.2
8.00------36.342.2--
10.00----34.434.440.240.2
16.00----30.330.336.136.1
20.00----28.428.434.234.2
25.00------26.432.3--
31.25----24.524.530.330.3
62.50----18.518.524.324.3
100.00----14.414.420.220.2
125.00----------18.3
155.52----------16.4
175.00----------15.4
200.00--------14.214.2
250.00----------12.3
&A
Return Loss
Link Return Loss
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Orlando 39A)(Orlando 39A)
Freq. (MHz)
1.00--18.017.017.019.019.0
4.00--18.017.017.019.019.0
8.00--18.017.017.019.019.0
10.00--15.017.017.019.019.0
16.00--15.017.017.019.019.0
20.00--15.017.017.019.019.0
25.00--10.016.316.318.318.3
31.25--10.015.615.617.617.6
62.50--10.013.513.515.515.5
100.00--10.012.112.114.114.1
125.00--------13.413.4
155.52--------12.812.8
175.00--------12.412.4
200.00--------1212
250.00--------11.311.3
Channel Return Loss
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Orlando 39A)(Orlando 39A)
Freq. (MHz)
1.00----17171919
4.00----17171919
8.00----17171919
10.00----17171919
16.00----17171919
20.00----17171919
25.00----16161818
31.25----15.115.117.117.1
62.50----12.112.114.114.1
100.00----10101212
125.00--------1111
155.52--------10.110.1
175.00--------9.69.6
200.00--------99
250.00--------88
&A
ACR
Link ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
Calculated(Tokyo 92A)
Freq. (MHz)
1.00----59.1----70.8
4.00--40.047.7----59.5
8.00------------
10.00--35.039.4----51.0
16.00--30.034.5----46.1
20.00--28.032.0----43.7
25.00------------
31.25--23.026.6----38.4
62.50--13.016.7----29.0
100.00--4.08.7----21.4
125.00----------17.4
155.52----------13.1
175.00----------10.6
200.00----------7.7
250.00----------2.4
Channel ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
Calculated(Tokyo 92A)
Freq. (MHz)
1.00----57.8----70.4
4.00----46.1----58.9
8.00------------
10.00----37----50.0
16.00----31.4----44.9
20.00----28.7----42.3
25.00------------
31.25----22.9----36.7
62.50----12.1----26.5
100.00----3.1----18.2
125.00----------13.8
155.52----------9.0
175.00----------6.3
200.00----------3.0
250.00-----------2.8
&CACR
PS ACR
Link Power Sum ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.00----56.1----68.4
4.00----44.7----57.0
8.00----------
10.00----36.4----48.4
16.00----31.5----43.5
20.00----29.0----41.0
25.00----------
31.25----23.6----35.7
62.50----13.7----26.2
100.00----5.7----18.6
125.00----------14.5
155.52----------10.2
175.00----------7.7
200.00----------4.8
250.00-----------0.5
Channel Power Sum ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.00----54.8----68.1
4.00----43.1----56.4
8.00----------
10.00----34----47.5
16.00----28.4----42.3
20.00----25.7----39.7
25.00------------
31.25----19.9----34.0
62.50----9.1----23.7
100.00----0.1----15.4
125.00----------10.9
155.52----------6.1
175.00----------3.4
200.00----------0.1
250.00-----------5.8
&A
Sheet9
&A
Page &P
Sheet10
&A
Page &P
Sheet11
&A
Page &P
Sheet12
&A
Page &P
Sheet13
&A
Page &P
Sheet14
&A
Page &P
Sheet15
&A
Page &P
Sheet16
&A
Page &P
Electrons in the air may be picked up by your radio or TV antenna and cause interference!Some electrons may fly into the air and eventually land on earth!
Signal-to-noise ratios (3)There are three quantities which affect signal-to-noise ratio (SNR):Attenuation to Crosstalk Ratio (ACR).Equal Level Far End Crosstalk (ELFEXT).Return Loss.
Signal-to-noise ratio #1: ACRAttenuation to Crosstalk Ratio (ACR)Applicable to 2-wire pair LAN applications (10BASE-T, 100BASE-TX).Each wire pair carries signal in one direction only.
CharacteristicsEffects of ACRTransmitterReceiverReceiverTransmitterNICHubTransmitted SignalAttenuated SignalCoupled NEXT NoiseACRAttenuated SignalNEXT NoiseNICHUB
Desired signal = attenuated signal from other end.Noise = NEXT + external noise (ignore external noise).(For LAN systems with two wire pairs carrying signalsin one direction each.)ACR = the traditional SNR
You need more signal (blue,pink) than NEXT (black) electrons!Look here and here!
Signal-to-noise ratio (ELFEXT)Equal Level Far End Crosstalk (ELFEXT).Applicable to applications where 2 or more signals travel in the same direction at the same time (1000BASE-T).
Desired signal = attenuated signal from other end.Noise = FEXT + external noise (ignore external noise).TransmitOutputTransmitOutputReceiveInputReceiveInputWorkstationLANequipmentSignalFEXTExternalnoiseSignal(For LAN systems with two or more wire pairs carrying signals in the same direction at the same time.)Another S/N = ELFEXT
You need more signal (blue,pink) than FEXT (black) electrons!
Desired signal = attenuated signal from other end.Noise = reflected signal in own wire pairTransmitOutputTransmitOutputReceiveInputReceiveInputWorkstationLANequipmentReturn loss(bump in electronic road)Signal(For LAN systems with a wire pair carrying signals in both directions at the same time.)Yet another S/N = Return Losshybridhybrid
Desired signal = attenuated signal from other end.Noise = reflected signal from own endTransmitOutputTransmitOutputReceiveInputReceiveInputWorkstationLANequipmentReturn loss signal (bump in electronic road)(For LAN systems with a wire pair carrying signals in both directions at the same time.)Yet another S/N = Return Losshybridhybrid
Power Sum PerformancePower sum performance is the sum of the pair-to-pair performance of the component or system.Power sum NEXT performance should meet or exceed the existing TIA pair-to-pair NEXT requirements.
What is power sum NEXT and power sum ELFEXT?Both are computed values from measured pair to pair NEXT or ELFEXT results:Power Sum NEXT computed from three pair-to-pair NEXT resultsPower Sum ELFEXT is computed from three pair-to-pair ELFEXT results
Often required when more than 2 wire pairs are transmitting signals in the same direction (1 Gbps Ethernet).
When are power sum NEXT and power sum ELFEXT needed?Often required when more than 2 wire pairs are transmitting signals in the same direction (1 Gbps Ethernet).Significant if 25-pair cables are used (split up in six 4-pair links).May also be used to reflect crosstalk between separate 4-pair cables in a cable bundle.
PS ELFEXTPS ELFEXT = -10log(10-x1/10 + 10-x2/10 + 10-x3/10) dB
Link PS ELFEXT
attenuation
Link Attenuation
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
PDAM 3(Tokyo 92A)
Freq. (MHz)
1.002.12.52.12.12.11.9
4.004.04.84.14.03.93.5
8.005.7--5.75.5--
10.006.37.56.16.36.25.6
16.008.29.47.88.27.87.1
20.009.210.58.79.28.87.9
25.0010.3--10.39.9--
31.2511.513.11111.511.110
62.5016.718.41616.71614.4
100.0021.623.220.621.620.718.5
125.00--------20.9
155.52--------23.6
175.00--------25.2
200.00------30.427.1
250.00--------30.7
Channel Attenuation
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
PDAM 3(Tokyo 92A)
Freq. (MHz)
1.002.5--2.52.52.12.2
4.004.5--4.54.544.2
8.006.3----6.35.7--
10.007--776.36.5
16.009.2--9.29.288.3
20.0010.3--10.310.399.3
25.0011.4----11.410.1--
31.2512.8--12.812.811.411.7
62.5018.5--18.518.516.516.9
100.0024--242421.221.7
125.00----------24.5
155.52----------27.6
175.00----------29.5
200.00--------32.231.7
&A
NEXT
Link NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.006054.061.264.273.572.7
4.0051.845.051.854.864.163
8.0047.1----50.059.4--
10.0045.539.045.548.557.856.6
16.0042.336.042.345.254.653.2
20.0040.735.040.743.753.151.6
25.0039.1----42.151.5--
31.2537.632.037.640.65048.4
62.5032.727.032.735.745.243.4
100.0029.324.029.332.341.939.9
125.00----------38.3
155.52----------36.7
175.00----------35.8
200.00--------36.934.8
250.00----------33.1
Channel NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.0060.0--60.363.372.772.7
4.0050.6--50.653.663.163
8.0045.6----48.658.2--
10.0044.0--4447.056.656.6
16.0040.6--40.643.653.253.2
20.0039.0--3942.051.651.6
25.0037.4----40.450--
31.2535.7--35.738.748.448.4
62.5030.6--30.633.643.443.4
100.0027.1--27.130.139.939.9
125.00----------38.3
155.52----------36.7
175.00----------35.8
200.00--------34.834.8
250.00----------33.1
&A
PS NEXT
Link Power Sum NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----58.260.071.270.3
4.00----48.852.061.860.5
8.00------47.157--
10.00----42.545.655.554
16.00----39.342.252.250.6
20.00----37.740.750.749
25.00------39.149.1--
31.25----34.637.547.645.7
62.50----29.732.642.740.6
100.00----26.329.339.337.1
125.00----------35.4
155.52----------33.8
175.00----------32.9
200.00--------34.331.9
250.00----------30.2
Channel Power Sum NEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----57.36070.370.3
4.00----47.650.960.660.5
8.00------45.755.6--
10.00----4144.15454
16.00----37.640.650.650.6
20.00----36394949
25.00------37.347.4--
31.25----32.735.745.745.7
62.50----27.630.640.640.6
100.00----24.127.137.137.1
125.00----------35.4
155.52----------33.8
175.00----------32.9
200.00--------31.931.9
250.00----------30.2
&A
ELFEXT
Link ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----59.660.065.264.2
4.00----47.648.053.252.1
8.00------41.947.1--
10.00----39.640.045.244.2
16.00----35.535.941.140.1
20.00----33.634.039.238.1
25.00------32.037.2--
31.25----29.730.135.334.3
62.50----23.724.129.328.2
100.00----19.620.025.224.2
125.00----------22.2
155.52----------20.3
175.00----------19.3
200.00--------19.218.1
250.00----------16.2
Channel ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----5757.463.263.2
4.00----4545.351.251.2
8.00------39.345.2--
10.00----3737.443.243.2
16.00----32.933.339.139.1
20.00----3131.437.237.2
25.00------29.435.3--
31.25----27.127.533.333.3
62.50----21.121.527.327.3
100.00----1717.423.223.2
125.00----------21.3
155.52----------19.4
175.00----------18.4
200.00--------17.217.2
250.00----------15.3
&A
PS ELFEXT
Link Power Sum ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----57.057.062.261.2
4.00----45.045.050.249.1
8.00------38.944.1--
10.00----37.037.042.241.2
16.00----32.932.938.137.1
20.00----31.031.036.235.1
25.00------29.034.2--
31.25----27.127.132.231.3
62.50----21.121.126.325.2
100.00----17.017.022.221.2
125.00----------19.2
155.52----------17.3
175.00----------16.3
200.00--------16.215.1
250.00----------13.2
Channel Power Sum ELFEXT
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 78A)(Tokyo 92A)
Freq. (MHz)
1.00----54.454.460.260.2
4.00----42.442.448.248.2
8.00------36.342.2--
10.00----34.434.440.240.2
16.00----30.330.336.136.1
20.00----28.428.434.234.2
25.00------26.432.3--
31.25----24.524.530.330.3
62.50----18.518.524.324.3
100.00----14.414.420.220.2
125.00----------18.3
155.52----------16.4
175.00----------15.4
200.00--------14.214.2
250.00----------12.3
&A
Return Loss
Link Return Loss
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Orlando 39A)(Orlando 39A)
Freq. (MHz)
1.00--18.017.017.019.019.0
4.00--18.017.017.019.019.0
8.00--18.017.017.019.019.0
10.00--15.017.017.019.019.0
16.00--15.017.017.019.019.0
20.00--15.017.017.019.019.0
25.00--10.016.316.318.318.3
31.25--10.015.615.617.617.6
62.50--10.013.513.515.515.5
100.00--10.012.112.114.114.1
125.00--------13.413.4
155.52--------12.812.8
175.00--------12.412.4
200.00--------1212
250.00--------11.311.3
Channel Return Loss
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Orlando 39A)(Orlando 39A)
Freq. (MHz)
1.00----17171919
4.00----17171919
8.00----17171919
10.00----17171919
16.00----17171919
20.00----17171919
25.00----16161818
31.25----15.115.117.117.1
62.50----12.112.114.114.1
100.00----10101212
125.00--------1111
155.52--------10.110.1
175.00--------9.69.6
200.00--------99
250.00--------88
&A
ACR
Link ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
Calculated(Tokyo 92A)
Freq. (MHz)
1.00----59.1----70.8
4.00--40.047.7----59.5
8.00------------
10.00--35.039.4----51.0
16.00--30.034.5----46.1
20.00--28.032.0----43.7
25.00------------
31.25--23.026.6----38.4
62.50--13.016.7----29.0
100.00--4.08.7----21.4
125.00----------17.4
155.52----------13.1
175.00----------10.6
200.00----------7.7
250.00----------2.4
Channel ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
Calculated(Tokyo 92A)
Freq. (MHz)
1.00----57.8----70.4
4.00----46.1----58.9
8.00------------
10.00----37----50.0
16.00----31.4----44.9
20.00----28.7----42.3
25.00------------
31.25----22.9----36.7
62.50----12.1----26.5
100.00----3.1----18.2
125.00----------13.8
155.52----------9.0
175.00----------6.3
200.00----------3.0
250.00-----------2.8
&CACR
PS ACR
Link Power Sum ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.00----56.1----68.4
4.00----44.7----57.0
8.00----------
10.00----36.4----48.4
16.00----31.5----43.5
20.00----29.0----41.0
25.00----------
31.25----23.6----35.7
62.50----13.7----26.2
100.00----5.7----18.6
125.00----------14.5
155.52----------10.2
175.00----------7.7
200.00----------4.8
250.00-----------0.5
Channel Power Sum ACR
Cat 5Class DClass DCat 5ECat 6Class E
TSB 67ISO/IECISO/IECTIA/EIATIA/EIAISO/IEC
SpecificationOct-9511801:JTC14195-ADraft 3JTC1
1995(E)SC25 WG325-Aug-9818-Aug-98SC25 WG3
(Tokyo 92A)
Freq. (MHz)
1.00----54.8----68.1
4.00----43.1----56.4
8.00----------
10.00----34----47.5
16.00----28.4----42.3
20.00----25.7----39.7
25.00------------
31.25----19.9----34.0
62.50----9.1----23.7
100.00----0.1----15.4
125.00----------10.9
155.52----------6.1
175.00----------3.4
200.00----------0.1
250.00-----------5.8
&A
Sheet9
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Page &P
Sheet10
&A
Page &P
Sheet11
&A
Page &P
Sheet12
&A
Page &P
Sheet13
&A
Page &P
Sheet14
&A
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Sheet15
&A
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Sheet16
&A
Page &P
Backbone Cabling Distance
Backbone Cabling Distance is dependent upon fiber type and location.
The chart above shows the maximum distances and where in the backbone they apply.
21
Recommended