User's Manual

INSTALLATION
MOBILE STATIONS
ENVOY™ TRANSCEIVER REFERENCE MANUAL 355
The cabling must be in a position that:
• is away from operator’s feet
• is secured and concealed as much as possible
• ensures the control cables are separated from the DC power cable by at least
200 mm (8 in), except over short distances where they may pass through the
same hole in a bulkhead
• is secured behind protective metalwork (only if the cables run under the vehicle)
Keep cables in the engine compartment away from:
• heat, for example, exhaust, air-conditioning systems, and water pipes
• oils and corrosive liquids, for example, engine oil, battery fluid, and brake fluid
Power supply
WARNING: All installations should be checked by a qualified technician before
power is applied to the transceiver.
Power must be provided by a 12 V DC battery for mobile stations.
Battery power supply
Batteries need to be well-charged and in good condition to ensure effective operation.
Poor condition of the battery usually leads to poor performance of your transceiver.
This includes reduced power output and signal distortion during transmission.
If a mobile transceiver causes a heavy drain on the vehicle battery, a two-battery
system can be used. Generally the vehicle alternator and charge system copes with the
extra battery, however, an isolation circuit should be provided between the batteries.
Checking a battery
It is important to maintain the condition of the battery to ensure that it is in suitable
working order.
Table 33: Battery maintenance
Check for... Comment
Correct charge Use a multimeter or a hydrometer to check the charge condition of the battery.
Water level in cells The plates should be sufficiently covered with electrolyte. Add clean distilled
water if the electrolyte is below the top of the plates. Never overfill cells as this
causes corrosion.
Corrosion-free
terminals
Where there is corrosion on the terminal posts, the whole area should be
neutralised and cleaned. This can be achieved using a wire brush, paint scraper,
and a solution of water and baking soda.
WARNING: Any cleaning of the terminals should be done in a well-ventilated
area using the appropriate personal protective equipment.