JJ-CCR ApS 2017
www.JJ-CCR.com
2017 JJ-CCR ApS – 2.00 / Revision 06
79
6.20.23
Calibrate
(Compass)
6.20.24
True North
(Compass)
In most places, a compass does not point towards True North, but rather
to Magnetic North. The difference in angle between these two directions is
called the magnetic declination (also called magnetic variation), and varies
around the world. The declination in your location can be found on maps
or online.
•
If you only need to match an uncompensated compass, or your naviga-
tion is all based on relative directions, then this setting is not necessary
and can be left at 0°.
Via this menu item you can calibrate the com-
pass or reset it to the factory settings. To cal-
ibrate the compass: Press calibrate and then
rotate in as many 3D orientations as possible
for 15 seconds: Upside down, sideways, on
edge, etc.
•
Calibrate the compass before first use.
•
Calibrate the compass after every battery replacement.
•
Compare the compass with a known good compass or fixed references to determine if calibration is
needed.
•
After calibration, it is recommended to compare the compass accuracy with a known good compass or
fixed references.
•
Calibration is not needed when travelling to different locations. The adjustment needed then is the True
North (declination).
6.20.25
System Setup
(Overview)
In this submenu it is possible to implement various system settings.
6.20.26
Date
(System Setup)
Using this menu item it is possible to set the current date. The date is used
for the controller logbook. The sequence is: day/month/year.
•
The date and time is displayed with the info screens (see chapter 6.22).
