Raymarine Radar Scanner User Manual download pdf (Page 21)

Chapter 1: Overview 13

Radome scanner cables

Inter-unit cable

The length of the supplied cable should be sufficient to complete the

cable run required on most small vessels. For longer runs, additional

or replacement cables are available, which have 4 power cores to

minimize voltage drops over the longer cable run: these optional

cables include 5 m and 10 m extension cables, and a 25 m

replacement cable.

The maximum inter-unit cable length is limited by the minimum

supply voltage, the scanner type (18" radome or 24" radome), and the

cable type (2 or 4 power cores): if a mix of light and heavy cables is

used, only 2 power cores are connected through.

Note: For vessels with 24 V power systems, any combination of inter-

unit cables can be used.

For vessels with 12 V power systems, the recommended cable(s) for

different run lengths are given in the following table, which assumes

a minimum supply voltage of 10.7 V (the lowest voltage likely to be

reached by a 12 V battery in normal marine use). Do not use cable

combinations that are not included in the table.

Refer to the packing list in Section 1.2 for cable part numbers

Note: This table applies to systems using the standard 1.5 m power

cable. If you extend the power cable you may need to select different

inter-unit cable(s), as discussed in the following section Power Ca-

ble.

Table 1-4: Recommended Radome Inter-Unit Cable(s) for Vessels with

12 V Power Systems

Inter-Unit Cable

Length Required (m

)

Scanner Package

2D (US) 2DE (Eur) 4D

10 Std 10 m light N/A N/A

15 Std + 5 m ext Std 15 m light Std 15 m heavy

20 Std + 10 m ext 25 m assembly Std + 5 m ext

25 25 m assembly 25 m assembly Std + 10 m ext

30 25 m + 5 m ext 25 m + 5 m ext 25 m + 5 m ext

35 25 m + 10 m ext 25 m + 10 m ext 25 m + 10 m ext

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Raymarine Radar Scanner User Manual Page 21