INPUT: NMEA 0183. Heading or wind sentences. (Current version software)
SYNCHRO: Nominal 10 to 35 volts maximum line to line.
Adjustable. 5VA total.
S1, S2, S3, with virtual centre at ground plane of interface.
RESOLVER: Nominal 20 volts maximum.
S1 S2, referenced to ground plane.
S1, S2 AC relative to sine and cosine of angle.
REFERENCE: Nominal 25v or 50 v from main transformer, or from an external reference input. Jumper selected. (May be 50 - 500 Hz)
ACCURACY: Within 1 degree of synchro or resolver output. Approx. to 9 bits.
NMEA Jumper J3 (0) Heading. True has priority over Magnetic.
INPUT: (1) Wind angle from $WIMWV true or relative sentence.
RATIO Jumper J2 (0) = 1:1
OPTION: (1) = Other ratio typically 360:1 as set in EPROM location 54H.
Also available, 10:1, 30:1, 36:1, 90:1, 180:1, 360:1
OUTPUT This selects the function of the interfaces
CONFIG: EPROM location 5CH. 0 = resolver. 1 = synchro.