Keithley 2280 Series Reference Manual

Appendix C: Calibration and adjustment Series 2280 Precision DC Power Supply Reference Manual
C-12 077085503 / March 2019
Low-current calibration
Perform the following steps to finish the 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.
For Model 2280S-32-6, the expected values are shown in the following table.
Steps
Maximum voltage
Minimum voltage
3
15.150 mV
0 V
4
1.515 V
0.02 V
For Model 2280S-60-3, the expected values are shown in the following table.
Steps
Maximum voltage
Minimum voltage
3
15.150 mV
0 V
4
1.515 V
0.02 V
Step 3
1. Before starting this calibration step, configure the shunt and load (electronic load or resistor load)
as shown in the following table.
Model
Shunt
Electronic load
Resistor load
2280S-32-6
5.05 Ω
Constant current mode
1.5 V
0.001 A
300 Ω
2280S-60-3
5.05 Ω
Constant current mode
1.5 V
0.001 A
300 Ω
2. Enter the shunt value and press the ENTER key.
3. Enter the measured result from the digital multimeter (DMM) and press the ENTER key.
4. After entering the data, the waiting window is displayed. You need to wait a few seconds for the
internal measurements and calculations. The step 4 window is displayed.

Keithley 2280 Series Specifications

General

Brand	Keithley
Model	2280 Series
Category	Power Supply
Language	English