Garmin GPS 19x NMEA 0183 Installation Instructions Manual - Page 12

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Performing Basic Calibration

You must be able to view heading data from the antenna on a connected chartplotter or marine instrument

before you can perform basic calibration. If you cannot view heading data on your connected display, check the

power connections and the display's NMEA 0183 settings.

When performing basic calibration, you first calibrate the compass and then align the heading in one

continuous procedure.

NOTE: The boat must be able to reach a cruising speed of at least 6.4 km/h (4 mph) to perform the heading

alignment.

1 Drive the boat to a location with calm, open water.

2 Set the display to view heading data from the connected antenna.

NOTE: You must not use GPS Course Over Ground (COG) to perform basic calibration.

3 Disconnect power from the antenna.

4 Wait while the boat becomes level and stationary.

5 Turn on power to the antenna, and wait until the heading data appears on the display

NOTE: If you are performing the first basic calibration after a factory reset, the heading is blank.

6 Within three minutes, complete two full, slow, tight circles

level as possible.

The boat should not list during calibration.

When the antenna is prepared to calibrate the compass, the heading data disappears from the display

You may receive an error message that the heading was lost. You can ignore this message.

7 Continue turning in the same direction at the same speed

heading data appears

When the heading data appears, the compass has been calibrated successfully, and you can align the

heading (optional).

, taking care to keep the boat as steady and

for approximately 1

rotations until the