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SECTION 3
You can calibrate BENCH iLS over the SCPI command interface. To do so you must execute
a series of steps while opening and shorting the output. These steps may be performed via
the front panel or via SCPI commands. A calibrated high-accuracy digital multimeter (DMM)
and a high accuracy shunt is required to perform calibration.
The sequence of commands is listed below. The sequence must be run to completion. If it is
aborted early either by cycling power or exiting Calibration Mode, you must restart the
command sequence from the beginning.
3.0 Calibration Sequence
1) Remove any load from the output terminals and apply the DMM leads to the
output terminals. Set the output voltage to a low value (recommend 10% of the
rated output voltage) and enable the output. Record the low voltage setpoint.
2) Use the DMM to record the actual output voltage of the supply. Record the low
voltage measured.
3) Set the output voltage to a high value (recommend 90% of the rated output
voltage). Record the high voltage setpoint.
4) Use the DMM to record the actual output voltage of the supply. Record the high
voltage measured.
5) Command BENCH iLS to perform the voltage calibration based on the recorded
values:
CALibration:CALCulate:VOLTage <low voltage setpoint>,<low voltage
measured>,<high voltage setpoint>,<high voltage measured>
All voltages must be in Volts.
6) Disable the output. Let it bleed down to near 0V. Connect the shunt to the output
terminals and apply the DMM leads to the shunt terminals. Set the output current
to a low value (recommend 10% of the rated output current) and enable the
output. Record the low current setpoint.
7) Use the DMM to record the actual output current of the supply. This may involve
dividing a measured voltage by the known shunt resistance. Record the low
current measured.
8) Set the output current to a high value (recommend 90% of the rated output
current). Record the high current setpoint.
9) Use the DMM to record the actual output current of the supply. Record the high
current measured. This may involve dividing a measured voltage by the known
shunt resistance.
CALIBRATION
iLS600, iLS600-R and iLS1500 Series
Rev. 05.20.21_#1.0
advancedenergy.com
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