Installation Of Scanner Unit - Raytheon Pathfinder 1200 Instruction Manual

4.2
INSTALLATION OF SCANNER UNIT
4.2.1 Selecting the location
Selecting an adequate location for the Scanner Unit requires careful consideration.
On many small ships, the unit can be installed directly on the top deck of the wheelhouse
near the ship's centerline. The unit should be mounted as high as possible on the ship to
ensure best performance at the maximum range. (Refer to para 2.4.3)
The scanning beam should not be obstructed by nearby large objects. Locate the unit
where large structures such as superstructures or serchlights, or horns, masts are not in the
same horizontal plane, otherwise, blind areas and false targets can appear on the radar
screen. Installation near the top of a stack must be avoided as damage could result due to
excessive heat and the corrosive effects of stack gases.
4.2.2 Mounting the Scanner Unit
Using the outline drawing of Figure 102 as a guide, install the Scanner Unit and secure
to the mounting surface. The mounting surface for the Scanner Unit should be parallel with
the ship's waterline, and the unit must be turned with the cable inlet astern (safety switch
aft).
If mounting directly to a top deck does not given sufficient height or clearance, a radar
mast or pedestal may be used to raise the unit.
4.2.3 Connecting the Cable
The cable entrance is provided in the base of the Scanner Unit.
If the unit is mounted on a hollow mast, the cable may be run inside the mast and
through the center entrance hole.
Connect the cable leads onto terminal board TB 101 as shown in below.
Terminal lugs are provided in the Scanner Unit.
Fig. 4-1 details the connecting procedure for the Scanner Unit.
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TO GROUND
4-2