Cabling - Nortel Circuit Card Installation Manual

Cabling

Several cabling schemes are possible for both AILC and RILC modes.
Typical capacitance for 24- and 26-gauge cables is shown in the Tables 168
and 169. RS-232 and RS-422 transmission distance is limited by the electrical
capacitance of the cable. Low-capacitance cable carries a digital signal
further than a high-capacitance cable.
Table 168
RS-232-C maximum line capacitance 2,500 µF
Gauge
24
26
Table 169
RS-422 maximum line capacitance 60,000 µF
Gauge
24
26
Figure 98 on page 510
cabling with the RS-232-C cable, associated patch panel, the RJ-11, and the
octopus cable. Each scheme can be tailored to suit individual needs, and
specific alternatives are shown in later figures.
NT7D16 Data Access card
Capacitance per foot (µF)
24
15
Capacitance per foot (µF)
24
15
shows the cabling choices available. It includes
Circuit Card
Page 509 of 906
Max distance
104
166
Max distance
2500
4000
Description and Installation