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Appendix C
Measurement Methods and Limits
C-3
NEXT
Measures crosstalk from a transmitting pair to an adjacent pair in the same cable
sheath. NEXT (worst pair-to-pair).
ANSI/EAI/TIA
Frequency
(MHz/dB)
Permanent Channel Permanent Channel Permanent Channel Permanent Channel
1.00 40.10 39.10 61.30 60.30 60.00 60.00 60.00 60.00
4.00 30.70 29.30 51.80 50.60 54.80 53.60 60.00 60.00
8.00 25.90 24.30 47.10 45.60 50.00 48.60 - -
10.00 24.30 22.70 45.50 44.00 48.50 47.00 - -
16.00 21.00 19.30 42.30 40.60 45.20 43.60 54.60 53.20
20.00 40.70 39.00 43.70 42.00 53.00 51.60
25.00 39.10 37.40 42.10 40.40 51.50 50.00
31.25 37.60 35.70 40.60 38.70 50.00 48.50
62.50 32.70 30.60 35.70 33.60 45.20 43.40
100.00 29.30 27.10 32.30 30.10 41.80 39.90
200.00 36.90 34.80
250.00 35.30 33.10
Category 3 Category 5 Category 5e
ANSI/TIA/EIA568/TSB67
ANSI/TIA/EIA568/TSB67/95 ANSI/TIA/EIA568/TSB67/95
ANSI/TIA/EIA568
Category 6 (Draft 9)
EINBETTEN
EINBETTENISO/AS/NZS
Frequency
(MHz/dB) Permanent Channel Permanent Channel Permanent Channel Permanent Channel
1.00 40.10 39.10 54.00 54.00 61.20 60.30 72.70 72.70
4.00 30.70 29.30 45.00 45.00 51.80 50.60 63.00 63.10
8.00 25.90 24.30 41.00 41.00 47.10 45.60 58.20 58.20
10.00 24.30 22.70 39.00 39.00 45.50 44.00 56.60 56.60
16.00 21.00 19.30 36.00 36.00 42.30 40.60 53.20 53.20
20.00 35.00 35.00 40.70 39.00 51.60 51.60
25.00 33.60 33.60 39.10 37.40 50.00 50.00
31.25 32.00 32.00 37.60 35.70 48.40 48.40
62.50 27.00 27.00 32.70 30.60 43.40 43.40
100.00 24.00 24.00 29.30 27.10 39.90 39.90
155.52 36.70 36.70
250.00 33.10 33.10
ISO Class-C
Proposed
ISO Class-D ISO Class-E
ISO Class-D 11801
AS/NZS 3080