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MWI-32 < SYSTEM DESCRIPTION > COMPASS COMPASS Description INFOID:0000000009721260 DESCRIPTION • This electronic compass is able to display 8 primary directions: N, NE, E, SE, S, SW, W, NW. Switch Operation • All standard compasses determine direction relative to magnetic north, however, this electronic compass is designed to display direction relative to true north. • The difference between magnetic north and true north varies from place to place across the surface of the earth. • This electronic compass must be “told” approximately where it is on the earth’s surface so that the magnetic north reading can be properly converted into a true north display. • To tell the electronic compass where it’s at, the earth is separated into numbered “Zone Variances”. The zone variance number in which the compass is to function must be entered into this electronic compass. • Each zone is magnetically about 4.2 ° wide. Typically, anything under a 22.5 ° total zone change is not noticed on the electronic compass display. However, if a change over 22.5 ° occurs, a reading may be off by one or more primary directions. • On long trips, the vehicle may leave its original zone and enter one or more new zones. Generally, you do not need to reset the compass zone if you travel between 3 or 4 zones, such as business travel or vacation. ZONE VARIATION SETTING PROCEDURE 1. Press and hold the compass switch for 3 – 9 seconds. 2. The current zone setting appears on the compass display. 3. Find the current geographical location number in the zone varia- 4. Select the new zone number. (Press the compass switch until 5. After select the new zone number, the compass display will 6. Perform the following calibration procedure for more accurate Press Compass is turned ON/OFF Press and hold Compass display (2) turns to zone variation change Press and hold (for more Compass display turns to calibration mode SKIB8868E SEL168Y |