Radio Shack 63-1120 - Manual (Page 5)

5
When calibrating the compass, you must drive your vehicle in one
complete circle. Be sure your vehicle is on level ground in an open
area, such as a parking lot.
The size of the circle and the direction your vehicle points when
beginning or ending the circle do not matter. The circle does not
need to be perfect, but it must be completed within 2 minutes.
Important: If you do not calibrate your compass properly, it will
not work correctly or accurately. You must calibrate your compass
when you use it the first time and recalibrate it anytime:
• you move the compass to a different location
• you adjust the bracket/display angle
• you remove and replace the batteries
•
DIST
appears steadily
• all the arrows flash
1. Ensure the compass is securely mounted (see “Mounting the
Compass” on Page 3).
2. Hold down LIGHT and POWER at the same time until all
arrows flash at the same time.
Note: If you have just installed/replaced the batteries, all the
arrows and digits briefly appear, then all the arrows flash at
the same time and the backlight turns on. Begin from Step 3
to calibrate your compass.
3. Press POWER . The arrows appear one at a time.
4. With the compass mounted, drive in one complete circle and
then press POWER . The current compass heading appears.