Compass Variance Setting Procedure
Variance is the difference between magnetic north and geographic north. To adjust the compass variance, set the EMTM to Compass/Temperature mode and press the center button for five seconds. The symbol VAR and the current variance zone number will be displayed. Press the step button (center button) to select the proper variance zone as shown in (Fig 1 ). Once the proper zone has been selected, wait three seconds and the display will return to normal operation. If the center button is held for 10 seconds instead of 5 seconds, the EMTM will set the variance to 8 and enter the fast calibration mode.