Black Box SCAN-LAN VI, Manual

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SCAN-LAN VI
Table A-8. 4-Mbps Token Ring UTP Pass/Fail Limits
Length
≤
100 meters
Resistance <9.9
Ω
Characteristic Impedance 100±25
Ω
NEXT >31 dB @ 5 MHz
>28 dB @ 8 MHz
>26 dB @ 10 MHz
Attenuation <7 dB @ 5 MHz
<9 dB @ 8 MHz
<10 dB @ 10 MHz
Split Pair NEXT <20 dB (8 to 10 MHz)
Table A-9. 16-Mbps Token Ring UTP Pass/Fail Limits
Length
≤
100 meters
Resistance <9.9
Ω
Characteristic Impedance 100±25
Ω
NEXT >41 dB @ 5 MHz
>38 dB @ 8 MHz
>36 dB @ 10 MHz
>33 dB @ 16 MHz
>32 dB @ 20 MHz
Attenuation <5 dB @ 5 MHz
<6 dB @ 8 MHz
<7 dB @ 10 MHz
<9 dB @ 16 MHz
<11 dB @ 20 MHz
Split Pair NEXT <20 dB (8 to 10 MHz)
Table A-10. Token Ring STP Pass/Fail Limits
Length
≤
100 meters
Characteristic Impedance 150±25
Ω
NEXT Between 1 and 16 MHz, NEXT >35 dB
Attenuation Between 1 and 16 MHz, Attenuation <8.5 dB
Split Pair NEXT <20 dB (8 to 10 MHz)
Resistance <7
Ω