Series 2280 Precision DC Power Supply Reference Manual
Appendix B: Verification
077085503 / March 2019
B-37
11. Enter the voltmeter reading in the Nominal column for your product in the
(on page B-13) table.
12. Calculate the two values: Nominal
– Minimum and Maximum – Nominal. Enter the values in the
(on page B-13) table.
13. Select the largest of the two calculations from step 13 and enter the value in the Largest column
(on page B-13) table.
14. Turn the DUT output off.
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-31)).
To check DC current load regulation:
1. Set the voltmeter as follows:
Set to measure DC voltage.
Set the current range to autorange.
Calculate the amperes (instead of volts) by multiplying the voltmeter reading result by 1/R.
2. Set the electronic load as follows:
Set to constant voltage.
Set to the minimum test voltage level in the following table.
Instrument
Test voltage
2280S-32-6
3.2 V
2280S-60-3
6.0 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
(on page B-14) 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
2280S-32-6
16 V
2280S-60-3
30 V
8. Enter the voltmeter reading in the
(on page B-14) 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
2280S-32-6
28.8 V
2280S-60-3
54.0 V
