Vanguard DMOM-100_200 s2 - Manual (Page 41)

DMOM-100/200 Series 2 Operating Procedures
41
Rev 2, 2009
APPENDIX A
DMOM Troubleshooting Guide
Item Symptom Possible Problem Solution
1 The reading is
incorrect. 1. There is a poor
connection at the test
clips.
1. Check the connections to
ensure that the teeth of the
voltage-sensing and
current clips are firmly in
contact with the device
under test.
2. Verify that the sense
cables are connected on
the inside of the current
cables. See Figure 8.0 and
Figure 10.0.
2 “Cable Error”
Message.
1. There is no test
current going through
the device under test.
2. There is a sensing
cables problem. 1. Check the current cable
connections to the device
under test.
2. Check the sensing cable
connections.
3. Run a Calibration Test.