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Robertson AP9 MK3 Autopilot
RGC Gyro with RGC Signal Interface Unit
When using an RGC gyro together with the RGC Signal Interface,
four options of connections are possible:
1. UART serial line, 20mA. (Identical to the SKR 82 serial line)
2. NMEA serial signal
3. Fluxgate sin/cos signal, identical to the Robertson fluxgate signal.
4. Step signal, 24V – 6 step/degree.
When using the fluxgate signal, select FLUXGATE compass.
When using step signal, select STEP SIGNAL.
See page 2-6 for compass selection.
RGC12 Gyrocompass
The RGC12 RS422 Tokimec special protocol or NMEA can be
connected directly to the AP9 MK3 without any Gyro Interface PCB.
FLUXGATE COMPASS
The AP9 MK3 is designed to accept fluxgate compass sin/cos signals,
using 2.5V DC as reference.
The Robertson type of Fluxgate Compasses, such as the RFC35NS
therefore interfaces directly to the AP9 MK3.
A fluxgate compass should only be used as a Monitor Compass.
Note !
Gyrocompass is always recommended as Main Compass.
For details, refer to page 5-10.
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