TMQ AP9 Autopilot (V6.0 - 965) Page 33 of 51 31/1/2017
Note: Refer page 44 for more heading output information
Pin 7 DAT1 Heading data + output
Pin 8 NEG Heading data - return
Heading Data Input
The AP9 pilot can accept NMEA 0183 heading data input from any source, for
example, GPS compass or other electronic compass. Heading sentences accepted are
HDT, HDM and HDG.
Wiring
Heading data input is connected via the internal terminal block T6 NMEA. Connections
are:
Pin 4 T6 IN+ Heading + data input
Pin 3 T6 IN- Heading – data input
TMQ is able to supply an electronic compass, Elproma ECS1, which will connect to
the internal terminal strips T5 Remotes and T6 NMEA as follows:
ECS1 Wiring Colour Code
· Red ------------- T5 10V Pin 1 (positive power)
· Black ----------- T5 NEG Pin 2 (negative power)
____________________________________________________
· Brown ---------- T6 NEG Pin 1 (calibration)
· Purple ----------- T6 DAT1 Pin 2 (calibration)
· Link T5 NEG -- T6 IN – Pin 3 (heading)
· Blue --------------T6 IN + Pin 4 (heading)
Heading Data Priority
The AP9 will operate with both TMQ electronic compass (COMMAGB) and NMEA
heading data input connected. The pilot will accept the NMEA heading data as first
priority.
If the NMEA data is not present the AP9 will display the heading received from the
standard compass (COMMAGB - if fitted).
If the NMEA data fails during operation, the unit will revert to the standard compass
and the alarm will sound. The alarm can only be cancelled by turning the AP9 off and
on again.
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