Velleman ESR70 - Manual (Page 11)

Atlas ESR User Guide February 2008 – Rev 4
Page 11
Appendix A - Troubleshooting
Problem Cause / Possible Solution
ESR value when probes
are shorted is not close
to 0Ω
Perform a probe compensation.
Seems to be stuck
“Measuring
capacitance ”
It is possible that one (or more) of the 4-wire
probe connections has become broken. Check all
connections.
Display shows
Removing trace
charge
This message is displayed if the Atlas ESR has
detected that the attached capacitor may be
exhibiting “Soakage” or “Dielectric
Absorption”, this is quite normal. The
instrument then ensures that the capacitor is very
well discharged and helps to prevent voltage
developing across the capacitor after the normal
discharge procedure has completed.
Display shows
Auto discharge
taking too long!
The unit attempts to remove charge from the
capacitor using a controlled discharge procedure.
If this takes longer than 60 seconds then the
discharge process will be aborted. It is
recommend that you safely discharge the
capacitor manually and try analysis again.
Display shows
Warning! V=132V
Safely discharge
If the voltage across the capacitor is greater than
50V then the Atlas ESR will not attempt to
discharge the capacitor, please safely discharge
the capacitor manually.
Display shows
Self Test Fail
Code 2
It is possible that a hardware failure has
occurred, please contact Peak Electronic Design
Limited for assistance.