"Thank you for the details - that makes sense. As it turns out I do, indeed, have the SR 150 installed... a near-senior moment, I suppose. In any event, your explanation gives me the picture in terms of the "bus" referred…"
"Actually I wasn't even having the chart plotter direct the auto pilot . I often don't when sailing at sea. I use the chart plotter to navigate waypoint legs. I manually steer the boat on the new heading then engage the auto pilot, using…"
"The a/c/e/gS-Series MFDs and i70 MFIDs are NMEA 2000 Certified devices. The i70 MFIDs are capable of calibrating Raymarine SeaTalkng/NMEA 2000 smart transducers. When interfacing third party NMEA 2000 sensors to a system, calibration of…"
"You might be over thinking. The EV-1 should be mounted where a standard fluxgate compass is located. Rule of thumb, as close to the center-line, as close to mid-ships, as close to the waterline as possible for the best available heading…"