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APPENDIX D Troubleshooting
This section consists of troubleshooting procedures to be used when operational problems are encountered.
D.1 General
If the output signal is erratic or unchanging, turn off power and recheck mechanical and electrical installa-
tion. Once all steps have been checked, continue with diagnostic test procedures to determine the cause
of fault. The possible causes of faulty output are listed below in order of probability of occurrence, and
should be checked in order.
1. Improper power supply/power connection
2. Mismatched system components*
3. Ground loops/improper grounding*
4. Improper wiring for counter card connections*
5. Incorrect receiver device or software*
6. Improper magnet mounting*
7. EMI noise, affecting transducer, transducer cable, or counter card cable*
8. Circuit fault within transducer
9. Circuit fault within counter card
* Will cause erratic or unstable output
The equipment required for diagnostic testing is:
1. Analog or digital voltmeter
2. Circuit tester or ohmmeter
3. Oscilloscope, 50 MHz (15 MHz minimum) — dual channel preferred
NOTE:
The following procedures are for general
troubleshooting purposes. Purchase of
replacement components should not be
determined solely upon results of these
tests. Consult MTS Sensors Division for
recommendations before purchasing
replacement system components.
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