Doc. CEI12166
Rev. 1
Pag. 44 Of 47
At the end of the test, if deviations are not acceptable it is possible to enter the calibration mode, and
correct for deviations.
3.6.2 Calibration procedure
The first window is the following.
Once “Measures calibration” has been selected, the following window is opened.
You can select the channel to be calibrated.
- If it is a coil current measurement, the following window is opened.
It is possible to calibrate both the offset and the measure. For the offset, put a jumper on the coil driver,
then select the offset channel: the following window is displayed.
If you check Fine, the offset is automatically adjusted; press Set to save the new correction.
For the amplitude, you need an external, stable current source, such as that generated by a relay test set.
Press Measure and then apply the full range current: the window displays the current measurement; you
can adjust the reading by the knob, until it matches the applied current.
NOTE: in the 25 A range the calibration is performed at 10 A, in order to avoid over-heating the
measurement shunt. Press Set to acquire the calibration.
- If the 5 V input is to be calibrated, the following window is displayed.
