Primary Training
Calibration
3.3.2 Offset calibration
Start the calibration process by pressing <ENTER>. First, the software will correct
the offset : you will be prompted to short the corresponding analog inputs.
Offset correction
Please, short cut the analog
input number : 1
Press OK to calibrate offset
OK
CANCEL
When the input has been shorted, move the cursor to the <OK> icon and select with
<ENTER>.
The software begins the offset adjustment. If this operation is successful, the software
will adjust the gain. If the offset is not adjusted correctly, an error message appears.
This error is often due to a poor shorting of the input, or the range jumpers not being
installed in the location you selected in the AUTOCONFIG menu.
It is important to note that the <CANCEL> icon allows you to return to the previous
level in the software.
3.3.3 Gain calibration
3.3.3.1 DC mode gain calibration
This mode must be carried out using DC voltages or currents.
The gain adjustment can be made as soon as the offset adjustment has been
completed. The program suggests a voltage or current value to be applied to the
channel inputs to be calibrated (approximately 80% of the range). If this voltage is
not available, the user can enter another one instead of the one suggested.
This voltage must be between 0.1 and the chosen range multiplied by
√
2. Type
<ENTER> to accept this value.
In the following example, the range chosen is 2V RMS on channel 1. The program
suggests 2 Volts DC. If this voltage is not available, the user can enter any value
between 0.1 and 2.828 Volts DC (the higher the voltage is, the more precise the
calibration will be). Take care when calibrating current inputs for the dissipated heat
and do not exceed the maximum allowed values.
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