Bill, I have the same compass. Here is a link to the manual. http://www.echomastermarine.co.uk/assets/manuals/Simrad/Autopilot/Compass/RFC35R%20Instruction%20Manual.pdf
Do you have a simrad/robnet auto pilot? AP 20, 21, 22, 35? Is your RFC35R setup for NMEA 0183? I have an AP 22 and J300X autopilot. To calibrate I have to navigate to the calibration menu and over the course of ~2 minutes perform a complete and even circle. When it is done calibrating it will go to the next menu where I can confirm calibration and adjust the offset. During this time I drive dead on each of the cardinal directions - 90, 180, 270, 360 as indicated by the GPS. If I find that there is a consistent deviation from between the GPS direction and the RFC35R direction then I can enter an offset number. I believe that this offset is generally intended to correct for minor errors resulting from unsquare mounting and the interference of objects on board. I would look to see how the RFC35R is mounted. There is a Forward orientation. Then I would drive in each of the cardinal directions and see if you can determine a consistent deviation. Next see if you can program that value into the chartplotter as part of the calibration. If none of those things work then try rotating the orientation of the unit to see if that has any effect. Let us know what you find. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Thu, Jun 27, 2019, 12:31 PM Bill via CnC-List <cnc-list@cnc-list.com> wrote: > I am having difficulty correcting the rotation of a little boat icon on > the screen to the direction I am going. I am currently traveling at 238 > degrees, and the boat is pointing around 360. Does this require a compass > calibration, or is it some simple setting? This is also screwing up my true > wind and apparent wind speed. > > Thanks, > > Bill Coleman > Erie PA > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
