Simrad Autopilot Compass
34 20220653 / Rev. C
5.6 RFC35NS Compass (NMEA+SIN) as
RFC250 substitution
As from 1998 the RFC35NS (part no. 22083596) substitutes
RFC250. It comes with a “pigtail” cable that matches with the
Viking connector on the original RFC250 extension cable (part
no. 20183554).
The optional SIN PCB added to the RFC35N compass provides
analogue Sine/Cosine heading output.
The signal is according to the Simrad standard; ±2V with 2.5V
reference that makes the compass compatible with RFC250
(NMEA+Sine/Cosine output).
The compass can then be used with the following Simrad/
Robertson autopilots: AP100, AP1000, AP2500, AP200 series,
AP40, AP45 and AP9MKII/3. See also table page 36.
An extra cable gland is supplied for a separate NMEA cable
connection if needed.
AP2500
(AP200)
RFC35NS
Figure 5-15 RFC35NS connection to autopilot
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