6.5.2 Front Panel Measure Mode Error Messages
The measurement conditions displayed on the front panel are the actual values of the voltage/current and frequency sensed at the AT3600’s nodes. If voltage or current and frequency test conditions have been specified it may not be possible for the AT to maintain these conditions. For example, if the AC impedance of the winding under test is only 0.1Ω at the specified frequency and you have specified a 5V test signal, then the AT would have to supply 5V / 0.1Ω = 50 Amps!
You will then see a warning similar to this:
The AT will continue to measure accurately, but you can also allow the tester to automatically choose a test voltage or current based on the programmed frequency by selecting AUTO V.
For the leakage inductance test only, AUTO A may be displayed.
Some tests energize more than one winding (e.g. TRL), and in this case, the display will show voltage from the first energized node unless the error is only on the second, when that voltage will be displayed.
For over-range errors you may also see an error message similar to this:
In this case, choose AUTO conditions where possible in a NEW SET UP and consult Chapter 7, Tests and Test Conditions. For low voltage / low power tests only, the tester will continue to try making measurements.
For low power tests that include dc bias you may see the following message:
In which case, you should reduce the dc bias level until this message no longer appears.