Commissioning Confusion

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Don,

Please click here to view a FAQ addressing this subject. This FAQ addresses not only how to view the maximum deviation detected by your autopilot, but also how the short cruise to determine the deviation and vessel handling should be conducted. A problem report has been logged regarding the confusion which may be raised by large differences in the deviation reported on the control head's screen following completion of "Detecting Magnetics" and that obtained via the About Pilot feature. As you have suggested, the maximum detected deviation value may be ascertained via the command sequence MENU->SET-UP->DIAGNOSTICS->ABOUT PILOT and then examining the value listed for DEVIATION. Should the maximum detected deviation be less than the value specified within the referenced FAQ, then heading alignment may be performed. Should the maximum deviation be greater than the value specified within the referenced FAQ, then the EV-1 Sensor Core should be installed in another location where it may sense less magnetic deviation.

Please also see the referenced FAQ regarding heading alignment and the caution concerning comparisons of Heading and GPS SOG values. Heading and COG should be expected to deviate from one another due to the effects of leeway.