Appendix B: Verification
Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual
B-40
077114601 / March 2019
Check DC current load regulation
This procedure uses the same test setup as the previous procedure (see
accuracy (10 A and 1 A ranges)
(on page B-34)).
To check DC current load regulation:
1. Set the voltmeter as follows:
a. Set to measure DC volts.
b. Set the current range to autorange.
c. Calculate the amperes (instead of volts) by multiplying the voltmeter reading result by 1/R.
2. Set the electronic load as follows:
a. Set to constant voltage.
b. Set to the minimum test voltage level in the following table.
Instrument
Test voltage
2281S
2 V
3. Set the device under test (DUT) to 100% of the full-scale output current for your product.
4. Set the DUT to 100% of the full-scale output voltage for your product.
5. Turn the DUT output on.
6. Enter the voltmeter reading in the DC current load regulation table for checking current load
regulation at the minimum voltage for your product.
7. Increase the electronic load to the reference test voltage level.
Instrument
Test voltage
2281S
10 V
8. Enter the voltmeter reading in the DC current load regulation table for checking current load
regulation at the reference test voltage for your product.
9. Increase the electronic load to the maximum test voltage level.
Instrument
Test voltage
2281S
18 V
10. Enter the voltmeter reading in the DC current load regulation table for checking current load
regulation at the maximum voltage for your product.
11. Calculate the two values: Ref
– Min and Max – Ref. Enter the values in the appropriate columns
in the DC current load regulation table.
12. Power off the DUT and test equipment.
