Check Dc Voltage Load Regulation - Tektronix Keithley 2281 Series Reference Manual

Model 2281S-20-6 DC Power Supply and Battery Simulator Reference Manual

Check DC voltage load regulation

This procedure uses the same test setup as the previous procedure (see
accuracy without remote sense
Make sure the warm-up criteria have been met, as described in the Performance verification
conditions.
To check DC voltage load regulation:
1. Set the voltmeter as follows:

Set to measure DC volts.

Set the current range to autorange.

Verify that the Math mx + b function is disabled, assuring that volts are being read.
2. Set the electronic load as follows:

Set to constant current (CC) mode.

Set to draw 0 A.
3. Set the device under test (DUT) to 100% of the full-scale output current.
4. Set the DUT to 100% of the full-scale output voltage.
5. Turn the DUT output on.
6. Enter the voltmeter reading in the DC voltage load regulation table under the Min column for your
product.
7. Increase the electronic load to the reference load test current value.
Instrument
2281S
8. Enter the voltmeter reading in the DC voltage load regulation table under the reference load
column for your product.
9. Increase the electronic load to the maximum load test current value.
Instrument
2281S
10. Enter the voltmeter reading in the DC voltage load regulation table under the Nom column for
your product.
11. Calculate the following values: Nom – Min and Max – Nom. Enter the values in the appropriate
columns in the DC voltage load regulation table.
12. Enter the largest of the three values calculated in step 11 in the Largest column in the DC voltage
load regulation table.
077114601 / March 2019
(on page B-19)).
Test current
3 A
Test current
5.4 A
Appendix B: Verification
Check DC voltage setting
B-25