Oregon Scientific RA126 To SET the True North Calibration, Declination Angle About Declination

Models: RA126

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EN

Press SET to navigate to Calibration mode option.

 

 

 

Press and hold SET to begin calibration of the compass.

Rotate the watch counter clockwise at the same speed as the moving segments around the circumference of the display. The rotation will be finished once you have performed 1 ¼ turns and the display will appear as shown below when nearing the end of its calibration.

MODE

SET

NOTE The compass should be calibrated:

Before you use it for the first time.

When the battery is replaced.

Before you leave for an extended outdoor activity.

Whenever it is exposed to strong magnetic sources, extreme cold, or you suspect that other environmental conditions have affected the compass readings.

If you notice that the compass is not showing the

direction correctly.

TO SET THE TRUE NORTH CALIBRATION

When you do not know the declination angle, the true north calibration function can be used to compensate for the difference between magnetic and true north. All you need to know is the direction of true north (this can be found from landmarks in your immediate vicinity). Setting the true north calibration makes the compass reading more accurate.

1.Press MODE to navigate to Set up mode.

2.Press SET to navigate to True north mode option.

3.Turn the compass to the direction of true north and press ST / SP / +.

To toggle True north calibration ON / OFF:

Press MODE to navigate to Set up mode.

Press SET to navigate to True north mode option.

Press ST / SP / + to toggle true north mode to ON /

OFF

NOTE If the declination angle is turned ON, the True north function will automatically turn itself OFF and vice-versa.

DECLINATION ANGLE

ABOUT DECLINATION

Declination is the angle between where a compass needle points (magnetic North Pole) and the true North Pole. The declination angle can vary from 0-30 degrees East (E) or West (W) and can be found on most maps or on the Internet.

For declinations in the United States: http://www.ngdc.noaa.gov/seg/geomag/jsp/Declination.jsp 1. Enter your zip code in the area provided

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Oregon Scientific RA126 user manual To SET the True North Calibration, Declination Angle About Declination