Difference Between DG Heading And GPS Track

DG Heading will be displaying the DG heading corrected by the pilot or by the AV-Mag. This heading is the gyro heading or the magnetic heading.

GPS Track comes directly from the GPS that is connected to the AV-30. This can come from a handheld or an in-panel GPS. 

No DATA - means that the AV-30 is not receiving GPS information. There is no communication from the GPS. This can be caused by a few factors:

1. No GPS is connected.
2. The GPS has not been set up to output the correct information.
3. The AV-30 Serial port has not been set up properly. 

NOGPS - Means that the AV-30 and the GPS are communicating but the GPS has not acquired GPS yet. This can be caused by a couple of factors:

1. The GPS has not acquired.
2. The aircraft is inside a hangar.
3. The baud rate on the AV-30 has been set incorrectly. 

Watch the following video for more information on the differences.