Table 37: Possible Faults In The Fixed Installation - Codan Envoy Reference Manual

I
NSTALLATION
F
IXED STATIONS
Noise reduction
In some cases, noise can be reduced by connecting the case of the transceiver directly
to earth. If an improvement is noticed, the existing functional RF earth may be
inadequate and need improvement.
Where the antenna and transceiver must be installed in close proximity, directly
earthing the transceiver may be necessary to eliminate RF feedback.
Troubleshooting the fixed installation
Common problems caused by incorrect installation are listed in

Table 37: Possible faults in the fixed installation

Symptom
Tuning fails
Noise interference
No power
414
Possible cause
Inadequate earthing
Noise interference by
other equipment
Inadequate earthing of the
transceiver
The internal fuse of the
transceiver has blown
Power not switched on
Incorrect cable
connections
Faulty cables and/or
connectors
Battery not supplying the
correct voltage, or is in
poor condition
Action
Improve the earth of the transceiver by connecting
an earth strap (braid or copper strip) from the earth
screw of the transceiver to the earth point, keeping
the strap as short as possible.
Identify the source of interference by switching off
other equipment. If possible, move the transceiver
and/or antenna away from the noise source.
Improve the earth of the transceiver by connecting
an earth strap (braid or copper strip) from the earth
screw of the transceiver to the earth point, keeping
the strap as short as possible.
Replace the fuse.
Check that the AC mains supply and the
transceiver supply are both switched on.
Check that the AC mains outlet, the transceiver
supply, and the transceiver are connected correctly.
Check that the cables and connectors between all
items of equipment are securely connected and not
damaged.
If the cables or connectors are faulty, contact your
Codan representative.
Check battery supply.
E ™ T
NVOY
Table 37.
R M
RANSCEIVER EFERENCE ANUAL