At the same screen you should now set the desired cycle rate for magnetometer. Typical values
for 880 family would be 0.1 seconds (10 HZ) and typical value for proton magnetometer is 2.0
seconds (0.5 Hz).
After all parameters are set and the auto detection sequence has completed you can press the
Next
button. Before goings to the next Wizard screen, the program will try to communicate with
magnetometer to configure it accordingly. If magnetometer is not connected, the program will
fail to converse with the mag and you will have to press the Cancel button. However, after this
cancellation you can still proceed to the next dialog boxes but we recommend that you use the
Wizard only when all devices to be logged are connected and sending data.
The communication program may fail due to other reasons as well, such as a wrong number of
magnetic sensors entered into the dialog box. For example, if your system has only one sensor
and you are trying to configure it as 2-sensor system this will occur.
Magnetometer calibration.
If your hardware includes depth or altimeter sensors, they need to be calibrated. The Wizard
does not provide full calibration capabilities (see below how to do depth / altimeter calibration)
however it allows entering of the calibration coefficients if you know them. These values might
be obtained from the factory or the results of previous calibration procedures. You also can
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G–877 MARINE MAGNETOMETER OPERATION MANUAL
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