Raymarine C120 Question

[Inkwell]

Just installed a C120 chart plotter, the chart nav is good, radar is working fine, but the autopilot will not work. I hope to speak with the installer soon, maybe the help desk at Raymarine too, but in the meantime any thoughts from the Board would be helpful.

[AnchorageGuy]

Hard to say since we don't know what "the autopilot is not working" means. What is it doing? You also say you just installed but also you will talk to the installer soon. Unless you are talking to your self you need to get the installer back on board to check the install. With Raymarine there are a hundred variables that can cause issues with the autopilot including what autopilot you are trying to connect to.

[S/V Elusive]

Chuck is exactly right - a vague "not working" doesn't help us help you at all.

[Beausoleil]

My E-120 has a mode where you can display raw data received from the NMEA, Seatalk, Seatalk2 (NMEA-2000) and HSB2 (IP over Ethernet) ports. I just skimmed through the C-120 manual downloaded from Raymarine, and didn't see a similar feature for it - but it still may be buried somewhere.

Assuming your autopilot is physically connected, you can see if it is sending any data to the chartplotter. If not, then the first thing to check out is whether the cable is properly connected, and whether it's properly wired.

Finally, you need to make sure the chartplotter is sending the proper sentences to the autopilot. My Raymarine S3G looks for cross track error (APB or XTE), bearing to waypoint (BWC), heading (HDG/HDT/HDM), among others. If your autopilot is NMEA-only (not Seatalk-capable), you'll probably have to configure your chartplotter to output via the NMEA port the proper sentences. It's in the manual...

[Inkwell]

Thanks to all for the input. I have called the guy that installed the C120.