Chapter 1: Overview 11
1.4 Cable runs
You need to consider the following before installing the system
cables:
• You need to fit the inter-unit cable and the power cable.
• All cables should be adequately clamped and protected from
physical damage and exposure to heat - avoid running cables
through bilges or doorways, or close to moving or hot objects.
• Acute bends must be avoided.
• Where a cable passes through an exposed bulkhead or deckhead,
a watertight gland or swan neck tube should be used.
• Avoid cutting and re-joining cables (if necessary, refer to the notes
below).
You need to run the following cables:
CAUTION:
Do not pull the cable through bulkheads using a cord attached to
the connector. This could damage the connections.
• Inter-unit cable. A vinyl-covered and shielded cable is supplied
with the radome scanner unit. The cable has a connector plug at
one end for connecting to the display unit or extension cable; the
other end of the radome scanner cable is fitted with an 8-way plug
and power cores (covered by a clear protective sleeve) for con-
necting to the scanner.
For open array scanners, various length cables are available.
These cables have a connector plug at one end for connecting to
the display unit or extension cable; the other end is prepared ready
to fit to the power and signal connectors (see Section 2.2)
• Power cable. The scanner receives power via the display unit; the
power cable is supplied with the display unit. However, cable
details are provided in this section.
Rejoining Cables
You should avoid cutting and re-joining cables. If this is necessary
you must:
• Fit a ferrite on each side of the join. The specific ferrite to use
depends on the cable type - contact Raytheon Marine for details.
• Take care not to damage any of the wires. Make sure that all the
wires and, in particular, the screen are reconnected correctly.
154_4.book Page 11 Wednesday, October 25, 2000 3:02 PM
