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2.3. GPS
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place of the attached ball on the back of the lightbar.
Note
TracMap accepts no responsibility for any accidential damage resulting from dismantling the lightbar case to remove
the RAM mounting ball.
2.3 GPS
Any GPS can be installed that provides the baud rate and GPS sentences listed in Appendix C. If installing the TracMap TMR-100 GPS receiver attach the GPS antenna
by an SMA type connector. For higher precision TracMap TMR-200 GPS receiver,
the antenna must be fixed to the outside of the aircraft and for helicopters with more
than 2 blades fitted outside of the blade arc.
Note
If using the TMR-200 receiver a wire must be cut to stop
the TracMap Head unit attempting to autodetect the baud
rate as this interferes with the GPS signal. To do this you
need to cut the wire connected to Pin3 of the DB9 connector.
Unscrew the connector and remove the case. Once the wires
are exposed cut the centre wire in the top row. Then screw
the connector back together.
2.4 Connections Wiring Diagram
Figure 2.3 and 2.5 show the connections from the 10 Pin Cannon connector to the
aircraft. The digital inputs are used to detect whether the logging switch is on and to
control the menus. These inputs require a voltage of at least 3V to activate and can
be pulled to 12 volts or 24 volts dc. Normally these are wired to the aircraft’s cyclic
or joystick switches. The digital input connections are described in detail in Section
D.
For more information see appendix D.