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in after calibration is complete. Align the small triangle on the impeller housing with the matching
triangle near the hinge of the impeller cover on the front of the unit.)
To calibrate the unit’s digital compass, press the button to enter into the Main Menu, and use the
button followed by the button to select System. In the System menu, select “Compass Cal.” Following
the screen prompts, place the Kestrel Meter in the foam stand and slowly spin it around three full times.
Each rotation should take approximately 10 seconds. “Cal Complete” will be displayed on the screen
when the calibration is nished. Press the button to exit out of the Menus.
After calibrating, you may wish to verify the digital compass’ accuracy with a compass that you know to
be operating properly. Being careful to orient the Kestrel Meter vertically, verify the readings at north,
south, east and west. (It is possible that some but not all of the directions would be correct if the unit is
not calibrated correctly.) Remember to hold the Kestrel Meter and the compass far enough away from
each other that they do not interfere. You should expect the Kestrel Meter’s readings to be within ±5°
of the reference compass or better. If the Kestrel Meter’s direction readings do not appear to be correct,
simply run the calibration routine again.
Once your unit is correctly calibrated, you do not need to calibrate again unless a) you change the
batteries or open the battery door; b) the unit displays “uncalibrated” at the base of the Direction,
Crosswind or Headwind screen.
Calibration Error Messages
There are three error messages you may see during calibration. They are:
Magnetic Batteries: In some instances, the magnetic eld of the batteries is such that the Kestrel Meter
cannot accurately calibrate the compass. If this is the case, upon completion of the three rotations the
screen will display this error message. Simply open the battery door, rotate one or both of the batteries
slightly, and run the calibration again.
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