Compass ( aft8 / alterra / altiforce ) – Highgear Aerial User Manual
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compass ( afT8 / alTerra / alTIforce )
CaliBrating the CoMpass
(continued)
6. If the calibration is successful the display will show Cal in the
center line and end in the lower line and automatically advance
to the compass display.
7. If the calibration was unsuccessful, an err message will appear
in the lower line of the display, and you will need to repeat the
calibration sequence.
8. If you have chosen to set a magnetic declination, adjust the
degrees and direction using the s1 and s2 keys. Set and advance
from variable to variable using the s4 key.
9. If you do not know the Magnetic Declination for your area, leave
this setting at zero.
10. When you have completely entered the magnetic declination, exit
the calibration sequence using the s5 key.
MagnetiC deClination
A magnetic compass points to the earth’s magnetic north pole. Depending on your location, this may
be different from True North. Adjusting the MagnetiC deClination allows you to compensate for
this variation. Magnetic Declination for an area can be found on topographical maps. Declination can
change over time and distance. Make sure the source for your declination settings is up to date. The
following websites are good sources for finding local Magnetic Declination.
http://www.gsc.nrcan.gc.ca/geomag/field/mdcalc_e.php
http://www.ngdc.noaa.gov/seg/geomag/jsp/Declination.jsp
reaCtiVating CoMpass
To save power, the compass feature only remains active for a period of 30-seconds.
To reactivate the compass display, QuiCK press the s1 key.