Installation; Installation Of The Dgps Receiver; Selecting The Position For Installation - JRC JLR-7700MKII Instruction Manual

JLR-7700 MK 2 GPS Navigator

3. Installation

3.1 Installation of the DGPS Receiver

3.1.1

Selecting the Position for Installation

When connecting the cable attached to the equipment, do not bend it to an
acute angle, twist it, or impart excessive force because this sometimes causes
cracks or damage to the coating.
Do not install the receiver where there is excessive vibration.
Vibration may cause receiver failure.
Install the receiver 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 objects.
Whenever possible, select a place having the following characteristics.
1. An open space which allows uniform reception of satellite signals
2. Far away from any of high power transmission antennas
3. Outside radar beam range
4. Away from the inmalsat antenna by not less than 5 meters and below the level
of its antenna
5. Away from the antenna of a direction finder by not less than 5 meters
6. Away from the magnet compass by not less than 1 meter
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. If it is installed at an improper place, reception may become
intermittent, resulting in shorter position fixing time and poorer position accuracy.
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CAUTION