Robertson AP9 Mk3 Autopilot
4-4 20169223D
4.5 RFC35NS Fluxgate Compass
Dimensions:............................ See Fig. 4-3
Heading output:..................... Serial and analogue
Output format: ....................... NMEA183 10x/sec. and sine/cosine.
NMEA data:............................ $IIHDM,x.x,m*hh<cr><If>x.x=heading,
hh = checksum
Analogue data:....................... Sine/Cosine ±2V, 2.5VDC reference.
Accuracy: ................................<1.25° rms
Repeatability:..........................<0.2° rms
Calibration: ............................Automatic
Roll & Pitch: ...........................±35°
Supply:.....................................10-29 VDC, 1 W
Temperature:
Operation:................0 to +55°C (+32 to + 130°F)
Storage:.....................–30 to +80°C (–22 to +176°F)
Protection:...............................IP56
Mounting: ...............................Deck or bulkhead
Cable supplied:.......................0.3 m (1 ft.) with Viking connector for
Robertson autopilots (Sine/Cosine data)
and N2500 NMEA Interface.
4.6 RFC35N NMEA Compass
Dimensions:............................ See Fig. 4-3
Supply:.....................................12, 24VDC
Output: .................................... NMEA0183, HDM (10x/second)
Calibration: ............................. Automatic
Repeatability:..........................± 0.5 degrees
Roll/Pitch:...............................± 35 degrees
Accuracy:.................................± 3 degrees after calibration
Protection:...............................IP56
Temperature range:
Operation: .......................0 to +55°C (+32 to + 130°F)
Storage: ............................–30 to +80°C (–22 to +176°F)
NMEA0183 output data:
Heading:..................................$IIHDM,x.x,M*hh<cr><lf>
x.x=heading, hh= checksum
Status: .....................................$PSTOK,R<cr><lf>Calibration running
$PSTOK,C<cr><lf>Calibration
terminated, or not running (Also
presented before calibration is done).
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