Calibration mode (non-150/400 systems), Calibration groups, Display calibration (display cal) – Raymarine autopilot User Manual
Page 115: Compass calibration (compass cal), Dealer calibration (dealer cal)

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ST6001+ Autopilot Control Unit - Owner’s Handbook
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Calibration mode (non-150/400 systems)
Calibration groups
When connected to an autopilot other than a Type 150/150G or 
400/400G, the Calibration mode provides 3 main calibration groups:
Display Calibration (DISPLAY CAL)
The items in Display Calibration only affect the individual control 
unit. They are stored in the control unit and do not affect any other 
control units connected through SeaTalk.
You can adjust the Display Calibration settings as often as necessary 
– for example, to add or change information displayed on data pages
Compass Calibration (COMPASS CAL)
The Compass Calibration group is specifically designed for use 
during the initial autopilot seatrial, so you can correct the compass 
deviation and then align the compass. 
Dealer Calibration (DEALER CAL)
The Dealer Calibration group includes items that have a significant 
impact on autopilot operation and can affect your boat’s safety. 
After you have completed the initial installation and seatrial, you 
should not normally need to alter the Dealer Calibration values. The 
items in Dealer Calibration vary according to the Vessel Type you 
have selected. 
