Appendix C: Calibration and adjustment
Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual
C-22
077114601 / March 2019
After each calibration step, the 2281S output is set to a safe low-voltage level, preventing inadvertent
harm to the user, instrument, or load.
Remote low-current calibration
Connect the instrument with the digital multimeter (DMM), shunt, and electronic load (or resistor). For
details, see
Current calibration connections
(on page C-8).
You need to perform the following steps to finish the remote low-current calibration:
Step 3 and step 4: Current calibration on the 10 mA and 100 mA ranges
You must input the measured value from the DMM. The value should be within the expected range.
A message will indicate if the DMM data entry was out of the expected range. Verify that the proper
shunt value was used or that the cables are properly connected.
You can send
SYST:ERR?
to query any error messages and error event codes. For calibration error
messages and codes, refer to
(on page 8-3).
For 2281S, the expected values are shown in the following table.
Steps
Maximum voltage
Minimum voltage
3
1.515e
-2
V
0.00 V
4
1.515 V
0.02 V
Step 3
1. Before calibration, configure the shunt and load (electronic load or resistor load), as shown in the
following table.
Model
Shunt
Electronic load
Resistor load
2281S
5.05 Ω
Constant current mode
1.5 V
0.001 A
300 Ω
2. Send the command to prepare for step 3:
:CALibration:PROTected:STEP3
3. Send the measured result from the digital multimeter (DMM) and shunt value using the following
command:
:CALibration:PROTected:STEP3:DATA <voltage>, <resistance>
4. Send the following command to query the operation status:
*OPC?
After all of the operations are completed, the instrument returns
1
.
