Measuring Dc Loop Resistance - Nortel M3110 Installation Manual

Page 306 of 504
Table 43
Attenuation at 256 kHz for U/C cable
WE 4-pair
dB/kft
4.6
Table 44
Attenuation at 256 kHz for D inside wiring cable
NT
dB/kft dB/km
4.0 13.3

Measuring DC Loop Resistance

553-3001-367 Standard 3.00
Digital telephones line engineering
dB/km
15.3
WE
dB/kft dB/km
3.2
Measure DC loop resistance by using standard procedures.
Note: The DC loop resistance limit of 175 ohm should be reduced by
1 ohm for each one percent of the total loop that is aerial cable.
August 2005
dB/kft
19.0
Superior
dB/kft
10.7 3.7
AMP 25-pair
dB/km
63.3
General
dB/km dB/kft
13.3 4.6
dB/km
15.3