JRC GPS 124 -, Instruction Manual

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SECTION 3
INSTALLATION
3.1 Unpacking and Checking
Take out the GPS124 from the packing case carefully.
Check each item listed in Table 1-1 is contained in the case.
Save the case and the packing material until the equipment will be installed successfully.
In case the equipment is to be returned, kindly use the kept packing material.
3.2 Locating the Position for Installation
Do not install the cable with tight bending, hard twist, kink, tension or strain.
These deeds give the cable exterior and / or interior damage.
Do not install this equipment in the place where an excessive vibration and a
shock otherwise it will cause defective reception of GPS signals.
Do not paint the outer cover of GPS124, receiver.
Painting may cause poor receiving.
Install the GPS124 where there is no obstacle, in order to ensure that GPS
signals can be directly received from satellites without interference or
reflection of signals from surrounding structures.
Determine the best location that meets as many criteria as possible
mentioned hereof.
If it is difficult to find an ideal site, select a place temporarily and install the equipment.
Conduct a test to make sure that the proper performance can be obtained and then fix the
equipment in position. A poor location could result in intermittent reception, which reduces the
time of the position fix and therefore, its accuracy.
1. An open space, which allows uniform reception of satellite signals
2. Far away from any high power transmission antennas
3. Outside radar beams
4. Away from the INMARSAT antenna by not less than 5 meters and outside the
INMARSAT beam
5. Away from the antenna of a VHF transmitter and a direction finder by not
less than 3 meters
6. Away from a Magnetic Compass by not less than 1 meter
CAUTION