Rc25/rfc35r rate compass, 12 rc25/rfc35r rate compass, Installation – Simrad AUTOPILOT SYSTEM AP50 User Manual
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Installation
20221032B
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JUNCTION UNIT
MAIN PCB
ROBNET
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AP51
CONTROL UNIT
JP21
JACKPOINT
7m cable
7m cable
Figure 4-24 JP21 Jack Point Mounting
4.12 RC25/RFC35R Rate Compass
Figure 4-25 RC25/RFC35R Rate Compass Mounting
The heading sensor is the most important part of the AP50 
system and great care must be taken in choosing the mounting 
location. The heading sensor can be mounted at any location 
where there is a minimum of magnetic interference and 
minimum movements. It is not recommended to use the 
RC25/RFC35R on steel vessels. However, if this is done, it 
should be installed 1 meter above the steel deck to obtain 
optimum performance. 
Note !
In order to prevent excessive movements, an autopilot heading 
sensor should not be installed on the fly bridge or on the mast. 
The rate compass can be deck-mounted or on the bulkhead, 
athwartship or alongship. The heading offset feature of the 
AP50 will compensate for the mechanical offsets that may be a 
result of the selected location and orientation of the RFC35R. 
