Raymarine C-Series Installation Manual

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Chapter 2: Installation -21
(45 ft) for open array scanners. If you need to use a longer cable power cable
lengths must be considered.
• Shadow sectors and false echoes: Mount the scanner away from large
structures or equipment, such as the fly bridge, large engine stacks, searchlights,
horns, or masts. It is particularly important to avoid shadow sectors near the bow.
Raising or even lowering the scanner may help to reduce these effects.
In shadow areas beyond the obstruction there will be a reduction of the beam
intensity, although not necessarily a complete cut-off; there will be a blind sector if
the subtended angle is more than a few degrees.
In some shadow sectors the beam intensity may not be sufficient to obtain an
echo from a very small object, even at close range, despite the fact that a large
vessel can be detected at a much greater range. For this reason the angular width
and relative bearing of any shadow sector must be determined at installation.
Sometimes shadowing can be seen by increasing the radar gain until noise is
present. Dark sectors indicate possible shadowed areas. This information should
be posted near the display unit and operators must be alert for targets in these
blind sectors.
It should also be noted that wet sails create shadow areas and thus sail boat
operators should be aware that radar performance may reduce in rain.
If you mount the scanner on a mast, echoes from the mast may appear on the
radar display. These can be minimized by placing absorbing material, such as a
block of wood, between the scanner and mast.
• Platform rigidity/stability: The scanner platform should not twist (causing
bearing errors) or be subject to excessive vibration.
• Heat/fumes: Mount the scanner away from the top of exhaust stacks, since the
scanner and cables can be damaged by excessive heat and the corrosive effects of
exhaust gases.
• For open array scanners you should also consider the following points:
• Mounting Platform: The platform must be mechanically secure and capable of
supporting the mass and inertia of the open array scanner. The complete unit
weighs: 48" scanner - 30 kg (66.2 lb); 72" scanner - 33.4 kg (73.7 lb).
• The site must be clear of ropes and moving rigging.
• Sufficient clearance must be allowed to fully open the open array pedestal for
maintenance.
Mounting surface: sailboats
The scanner unit can be installed on a mast platform, an arch, or a bridge structure.
Make sure that the platform surface is flat and the scanner unit drain hole (radome
scanners) is not obstructed. Raymarine recommends that radome scanner units are

Raymarine C-Series Specifications

General

Brand	Raymarine
Model	C-Series
Category	GPS
Language	English