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EiconCard S90 Installation Guide 9

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 under the heading “Twisted Pairs” must be

paired. If you do not install 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:

Table 3. Connector Types

Interface Connector

V.35 Type M

V.24 DB25

V.36/RS-449 DB37

EIA-530 DB25

X.21 DB15

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Eicon Networks S90 Installationsanleitung Seite 9