Kaman KDM-8200 - Manual (Page 43)

43
Kaman Precision Products
Appendix C: Troubleshooting
Symptoms
3. CAUSE:
and Causes Excess loading (static or dynamic) on the sensor caused by the fixturing.
Conductive material too close to the sensor can cause excess loading.
SOLUTION:
1. If the sensor is mounted in a conductive fixture, make sure that you have met
the requirements outlined in Part 3: EQUIPMENT.
2. Remove any conductive material that you do not want to measure away from
the sensor area.
3. Calibrate for a certain degree of loading. You cannot compensate for excess
loading since it can only be determined empirically.
4. CAUSE:
Noisy AC feed power to the system.
SOLUTION:
1. Check for power tools, motors, soldering irons etc. on the same line;
turn them off or remove them.
2. Switch lines.
3. Use an input noise filter to the module.
5. CAUSE:
A malfunctioning display (on our equipment or yours).
Without test equipment it is difficult to determine if the display is bad other than
replacing it with a known good one.
SOLUTION:
Using a voltmeter, compare the output on pin 18C (see Part 3: EQUIPMENT) of
the power module external connector with the display monitoring CH1.
Remember that decimal points won’t necessarily correlate but the numbers
should.
6. CAUSE:
Coarse linearity misadjusted.
SOLUTION:
Recalibrate the system.
7. CAUSE:
Beat note interference when using more than one sensor.
SOLUTION:
Ensure that the sensors are at least 3 diameters apart, or
Synchronize your sensor and electronics as described in APPENDIX B.
8. CAUSE:
Ground loop.
This problem is usually the result of electrical ground surges from other equipment.
SOLUTION:
1. In sensors with non-isolated coils (3U, 6U), isolate the sensors from the
ground.
2. Isolate the systems(s) from potential grounds so that the ground is only t
through a desirable path.