GME TX3520W - Manual (Page 33)

PA G E 3 2 I n s t r u c t I o n m A n uA l t X 3 5 1 0 s / t X 3 5 2 0 s / t X 3 5 4 0 s t X 3 5 1 0 s / t X 3 5 2 0 s / t X 3 5 4 0 s I n s t r u c t I o n m A n uA l PA G E 3 3
Fitting the Controller Microphone
Plug the 8 pin plug into the socket on the front of the main
unit or alternatively you can use the adapter and extension
cable supplied with the radio. If the main unit is not easily
accessible this adapter will allow you to bring the microphone
socket to a more convenient position
Attach the microphone clip to a convenient location near your
driving position using screws. slide the bollard on the back of
the microphone into the clip to secure it.
DC POwEr CONNECtION
the radio is designed for 13.8 volt Dc, negative earth
installations only (i.e. where the negative terminal of the
battery is connected to the chassis or frame of the vehicle).
there are two recommended methods of installation.
radio remains ON when the ignition switch is OFF
connect the radio’s negative (black) lead to the vehicle’s
chassis, or if preferred, directly to the battery’s negative
terminal. the radio’s positive (red) lead should be connected
via the 2 amp fuse to the battery’s positive terminal.
Alternatively, the positive lead could be connected into
the fuse box at a point that has +13.8 volts continuously
available (on the battery side of the ignition switch) via the
2 amp fuse.
Radio remains ON when ignition switch is OFF
RED Fuse
Fuse
BLACK
Chassis
Car battery
Ingnition Switch
Radio turns ON and OFF with ignition switch
RED
BLACK
Chassis
Car battery
Ingnition Switch
To Radio
To Radio
radio turns ON and OFF with the ignition switch
connect the radio’s negative (black) lead to the vehicle’s
chassis, or if preferred, directly to the battery’s negative
terminal. the radio’s positive (red) lead should connect to an
accessory point in the vehicle’s fuse box via the 2 amp fuse.
this point should supply +13.8 volts only when the ignition
switch is turned on or in the AccEssorY position via the 2
amp fuse.
Radio remains ON when ignition switch is OFF
RED Fuse
Fuse
BLACK
Chassis
Car battery
Ingnition Switch
Radio turns ON and OFF with ignition switch
RED
BLACK
Chassis
Car battery
Ingnition Switch
To Radio
To Radio
High Voltage Detection
the radio has a built-in, high voltage detection system to
warn you if an overvoltage situation occurs. If the power
supply voltage exceeds 18 volts Dc, the channel display will
flash ‘hi dc’ for 5 seconds when the unit is first turned on, or
at the time the voltage exceeds 18 volts. In addition, when
transmitting, the tX indicator will flash and the transmitter
will select low output power.
If the overvoltage warning appears you should switch your
radio oFF and disconnect it from the power source, before
locating the cause of the trouble.
once the ‘High Voltage’ warning has been triggered, and you
have fixed the source of the problem, you will need to switch
the radio oFF then on again to reset it.
NOTE: the power source should never exceed 30 volts.
ANtENNA CONNECtION
It is essential to select a good quality, high efficiency, 477
mHz antenna. A poor quality antenna or one not designed
for the specific frequency band you are using will give very
poor performance.
GmE have a wide range of suitable 477 mHz uHF cB
antennas to suit most installations and applications. we
recommend contacting your local GmE retailer for advice.
connect to the antenna cable to the rear antenna socket
using a Pl259 coaxial connector.
NOISE SUPPrESSION
the inherent design of Fm transceivers results in a high level
of resistance to ignition and electrical interference. However
in some installations it may be necessary to take additional
steps to help reduce or eliminate noise interference.
During installation, try to route the Dc battery leads, the
antenna lead or any accessory wires away from the engine
compartment, ignition or alternator wiring. If the noise
continues, it may be necessary to fit a suppression kit in
which case we recommend you consult an auto electrician for
advice specific to your installation.
Higher frequency electrical interference cause by electric
motors can be suppressed directly at the motor terminals.