Cable Construction Information - Eicon Networks Eiconcard C90 Installation Manual

Cable construction information

If you plan to construct your own VHSI cables, be sure to observe the
guidelines given below.
Wire gauge, grounding, and pairing
• Use 28 AWG 7-strand wire with 0.020 - 0.028" insulation.
• The chassis must be grounded both by a drain wire and by the braid;
both must be connected to the connector case and shell at each
end of the cable. The braid must be connected through its full
circumference.
• Wires identified as "twisted pairs" must be paired. If you do not wire
twisted pairs correctly, the cable will not work.
Type of connectors
The VHSI port accepts a high density 36-pin male cable connector. The
types of connectors used on the interface-specific end of the cable are
as follows:
16
Interface
V.35
V.24
V.36/RS-449
EIA-530
X.21
Table 2. Connector types
VHSI port specifications
Connector
Type M
DB25
DB37
DB25
DB15