SonTek, a Xylem brand
RiverSurveyor S5/M9 System Manual (February 2013)
39
Q9 = Magnetic field is uniform
H9 = Complete horizontal rotation
V7 = 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.
6. 1/3
rd
horizontal rotation (Q9 H4 V6 M10):
Failed Calibration. Please Repeat Calibration!
Calibration duration = 110 seconds
M10.00 = Magnetic influence is acceptable
Q9 = Magnetic field is uniform
H4 = Incomplete horizontal rotation
V6 = High pitch/roll
Recommendation(s):
Repeat calibration with two complete horizontal rotations. The required duration of the compass
calibration is between 1 and 2 minutes.
7. On the bridge with no pitch/roll (Q8 H9 V3 M46):
Passed Calibration
Calibration duration = 110 seconds
M46.00 = Magnetic influence is acceptable
Q8 = 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.
8. Less than 1 minute calibration (Q9 H9 V9 M5):
Failed Calibration. Please Repeat Calibration!
Calibration duration = 45 seconds
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