VHSI port specifications
page 22
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 listed in Table 2.
Table 2. Connector types
Interface
Connector
V.35
Type M
V.24
DB25
V.24 (C91 PCIe) micro-D
V.36/RS-449
DB37
EIA-530
DB25
X.21
DB15
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