SonTek, a Xylem brand
RiverSurveyor S5/M9 System Manual (February 2013)
37
Click Stop upon completion of the compass calibration procedure. The calibration results and
feedback (Figure 35) are displayed in the window.
Figure 35. Compass Calibration Results
Compass Calibration feedback:
1. Clean Cal (Q9 H9 V9 M5):
Passed Calibration
Calibration duration = 110 seconds
M5.00 = Magnetic influence is acceptable
Q9 = Magnetic field is uniform
H9 = Complete horizontal rotation
V9 = High pitch/roll
Recommendation(s):
Avoid any changes to the instrument setup or its orientation to the magnetic influences detected
during the compass calibration.
Measurements should be made in locations with similar magnetic influences as the location of
the compass calibration.
2. Clean Cal with low pitch/roll (Q9 H9 V3 M10):
Passed Calibration
Calibration duration = 110 seconds
M10.00 = Magnetic influence is acceptable
Q9 = Magnetic field is uniform
H9 = Complete horizontal rotation
V3 = Low pitch/roll
Recommendation(s):
Measurements should be made with low pitch/roll OR repeat calibration with more pitch/roll.
Avoid any changes to the instrument setup or its orientation to the magnetic influences detected
during the compass calibration.
Measurements should be made in locations with similar magnetic influences as the location of
the compass calibration.
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