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Radar Installation Manual
unit that are needed for installation or operation. The cable must remain attached. For ease
of handling, coil the cable and place it on top of the scanner. Then secure it with tape. Invert
the scanner and make sure the four mounting holes are clear to accept bolts.
Working at higher elevations may become necessary while installing the scanner unit.
Observe safety measures and take sufficient precaution to avoid personal injury or damage
to the equipment.
2.2
INSTALLATION PROCEDURE
Prepare the mounting surface by making sure it is clean and flat.
NOTE
It is a better to check the accuracy of the template by measuring the actual dimension between the
hole locations. The reproduction process and moisture absorption can affect accuracy. Use the
template provided to mark the location of four mounting holes.
Align the template squarely with
the centerline of the vessel and with the arrow pointing forward.
1. Drill four 3/8 in. (10 mm) diameter holes through the mounting surface.
2. Check that each bolt (with lock washer and flat washer) protrude through the mounting
surface at least 5/16 in. (8 mm) but less than 9/16 in. (15 mm). The scanner will be
damaged if bolts protrude more than 9/16 in. (15 mm).
3. Apply sealant around each mounting hole.
4. Place the Antenna on the mounting surface. Orient the Antenna with the index mark on
the housing facing forward (cable gland facing aft).
5. Install and tighten four M8 x 25U (M8 x 1 in.) mounting bolts.
6. Uncoil the scanner cable.
7. Secure the cable near the scanner to support the weight of the cable and prevent strain
on the watertight cable seal. If the cable is to pass through tubing or a bulkhead, protect
the unfinished end.
NOTE
Do not use the unfinished wires or fabric braid to pull the cable. Attach a fish cord only to the cable
jacket.
8. Route the cable to the operator’s location, securing it at appropriate points along the
way.
9. Make a drip loop and apply sealant at the entry point of an exterior bulkhead.
2.3
ELECTRICAL AND DATA CONNECTIONS
The cable from Antenna unit provides all power, data and control connections necessary
for operation.
1. The large Black and White leads are for power connections and connect directly to a
10.8 - 31.2 VDC power for MDS-1 and to a 10.8 - 41.6 VDC power for MDS-8/MDS-9/
MDS-10-4/MDS-10-5.
2. The five small wires (Black, Orange, Yellow, Brown, Orange) are connected to the
Radar Junction Box.
3. The two remaining small wires (Green and Blue) connect to the Radar On/Off switch.
NOTE
The "On/Off control switch" controls the main power to the Radar Antenna.
