SonTek RS5 User Manual (August 2020) 71
Figure 48. Compass Calibration Procedure
6. The RS5 and boat/floating platform should be rotated through two complete
circles, taking 60 seconds for each rotation. The RSQ software will limit the
calibration routine to a maximum of 120 seconds, so the operator should try to
perform one rotation per minute. The duration of the calibration is shown in the
top right corner of the calibration screen. Once done, press
Finish
at the bottom
of the dialog.
7. Once finished, the calibration results will be displayed. Figure 47 shows an
example of a passed compass calibration, whereas Figure 49 shows an example
of a failed compass calibration. If failed, the user has the option to choose to
save the calibration to the system. Under normal circumstances, it is best to
avoid saving a failed calibration to the system and to restart the calibration.
Compass calibration failures can be caused by a variety of factors, and the
following two parameters (both highlighted in Figure 49) can be used to diagnose
the failure:
Error from Calibration (degrees) -
a statistical measure of calibration
quality. Lower values correspond to lower error and vice-versa. Compass
calibration errors larger than
0.5 degrees
will produce a failed compass
calibration.
Summary of Contents for Sontek River Surveyor RS5
Page 1: ...RS5 USER MANUAL XA00125...
