8.2. Measurement Quality Checks
The Compass button may be colored or inactive based on the following ADQA checks.
Inactive
Check—The data loaded does not have valid heading data, such as from a StreamPro with no compass.
Normal
Check—The ADCP has a compass that was not calibrated but calibration is not required because neither a loop test nor the Global Position System (GPS) are used.
Good (Green)
Check—A compass calibration and evaluation were completed.
Caution (Yellow)
Check—GPS data or the loop test is present, a compass calibration was completed but there is no compass evaluation.
Message—Compass: No compass evaluation.
Check—Magnetic variation is not consistent for all transects.
Message—Compass: Magnetic variation is not consistent among transects.
Warning (Red)
Check—GPS data or the loop test is present and there is no compass calibration.
Message—COMPASS: No compass calibration.
Check—GPS data are recorded and the magnetic variation is zero.
Message—COMPASS: Magnetic variation is zero and GPS data are present.