Seatex DPS 132 Installation Manual, rev. 0 Installation
14
3.6 Antenna and cable mounting
The maximum length of the antenna coaxial cables is 100 meters for the cable types normally
supplied with the system. If longer cables are needed, a low noise signal amplifier (LNA)
should be fitted.
3.6.1 GPS antenna and cable mounting
Instructions for mounting of the GPS antenna are included in the following paragraphs and on
the attached drawing 36300-MA-006 on page 49.
The cable used is ½" Cellflex superflexible.
Install the antenna as follows:
1. Attach the antenna to the mounting rod and attach the rod to the ship's masthead or pole
with proper mounting hardware like U-bolts, hose-clamps or tie-wraps.
2. Attach the antenna cable to the antenna.
3. Wrap outdoor cable connections with waterproof self-vulcanising tape as described in
section 3.5. An alternative way of waterproofing is to use heat shrink hose with glue. The
hose should cover the whole connector and part of the cable.
4. Dependent on the cable installation, secure the cable to the mast every one to three meters
with clamps or bands.
Note
The cable running from the GPS antenna to the DPS 132 unit should be as
straight as possible. Do not crush or crimp the cable with tie-downs, as this will
affect the electrical properties of the cable.
5. Check the antenna cable for short-circuiting. Route the connector at the other end of the
antenna cable to the main unit.
6. Connect the cable to the DPS 132 unit. A short RG-213 or RG-214 cable is delivered in
order to get secure cable runs into the cabinet.
If the antenna cable is attached to the DPS 132 unit, do not attach the antenna cable
to the antenna when the unit is running. If the antenna cable is short-circuited with
POWER ON, the GPS receiver will be damaged.
CAUTION
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