Geometrics G-882 User Manual

Geometrics Inc. G-882 Cesium Marine Magnetometer Page 87
Symptom
Probable Causes
Corrective Actions
High magnetic gradient
Low power supply voltage
Heater setting incorrect (too
hot or too cold)
Insufficient warm up time
Signal adjustment is set
wrong
behavior, then determine
correct orientation.
Check gradient by moving
sensor back and forth
East/West, North/South, and
Up/Down while noting
changes in the magnetic field.
Signal level diminishes
rapidly when the magnetic
field is changing by more than
200 nT per foot. Move the
sensor to a less magnetically
cluttered area if the gradient is
more than 200 nT per foot.
Increase power supply voltage
(minimum of 24 VDC at the
electronics).
Adjust heater such that the
temperature sensing
thermistor stabilzes at 34.5K
ohms*
Allow 20 minutes for the
magnetometer to warm up and
stabilize (longer in extreme
cold).
Adjust signal level*
Sensor connector damaged or
worn
Handling, mechanical
problem, accident, or normal
wear.
Correct handling or
mechanical problem. Then
replace sensor cable and
connector*
Excessive current
consumption.
Defective sensor or
electronics
Return fish to Geometrics for
repair.
*Authorized repair shop only

Geometrics G-882 Specifications

General

Brand	Geometrics
Model	G-882
Category	Marine Equipment
Language	English