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APPENDIX B: Cable Test Pass/Fail Limits
Token Ring 16 UTP Pass/Fail Limits
Token Ring 16 UTP Test Limits
Length
Length < 100 meters
Required Wire Pairs
3,6 and 4,5
Background Noise
Background Noise > NEXT + 6 dB
SNR
Between 5 and 16 MHz, SNR
≥
24 dB
Characteristic Impedance
100±25 ohms
NEXT
Between 5 and 16 MHz,
NEXT
≥
58–15 log (f/0.772) + 5 dB
(equivalent to Category 4)
Attenuation
Between 5 and 16 MHz,
Atten
≤
5 dB @ 5 MHz
6 dB @ 8 MHz
7 dB @ 10 MHz
9 dB @ 16 MHz
(equivalent to Category 4)
Split Pair
NEXT < 20 dB
