Chapter 2: Installing the Scanner
35
CAUTION:
If you do not have a thermal circuit breaker or fuse in your power
circuit, e.g. fitted to the DC distribution panel, you MUST fit an
in-line breaker or fuse to the positive (red) lead of the power
cable.
The open array scanner has a power switch fitted to the pedestal. This
switch can normally be left ON. However, if the scanner is being
serviced or if any personnel are in the vicinity of the open array, the
switch should be set to OFF.
Scanner connection
The inter-unit cable is connected to the scanner as described in
Sections 2.1 and 2.2. If you are using an inter-unit extension cable,
connect this to the display unit, and connect the supplied cable to the
extension cable. The scanner connector pins are shown in the
following diagram, together with the connections and core colors.
CAUTION:
The display connector on the inter-unit cable is a moulded plug
that cannot be replaced. DO NOT remove this moulded plug.
Table 2-1: Isolator Switch/Thermal Breaker/Fuse Values
Vessels
Supply
Device
Open Array Systems
4 kW
10 kW
Radome
Systems
12 V*
Isolator Switch min. rating
30 A
n/a
20A
Thermal Breaker rating
15 A
n/a
10A
Fuse value
20 A
n/a
15 A
24/32 V**
Isolator Switch min. rating
15 A
15 A
15 A
Thermal Breaker rating
8 A
10 A
5 A
Fuse value
10 A
15 A
8 A
* 10 kW scanners cannot be directly connected to 12 V
*
*Radome systems cannot use 32V.
154_4.book Page 35 Wednesday, October 25, 2000 3:02 PM
