Keithley 2280 Series Reference Manual

Appendix B: Verification Series 2280 Precision DC Power Supply Reference Manual
B-28 077085503 / March 2019
7. Increase the electronic load to the reference load test current value.
Instrument
Test current
2280S-32-6
3 A
2280S-60-3
1.6 A
8. Enter the voltmeter reading in the DC voltage load regulation (on page B-7) table under the
reference load column for your product.
9. Increase the electronic load to the maximum load test current value.
Instrument
Test current
2280S-32-6
5.4 A
2280S-60-3
2.88 A
10. Enter the voltmeter reading in the DC voltage load regulation (on page B-7) 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 (on page B-7) table.
12. Enter the largest of the three values calculated in step 11 in the Largest column in the DC voltage
load regulation (on page B-7) table.
Check DC overvoltage protection
This procedure uses the same test setup as the previous procedure (see Check DC voltage setting
accuracy without remote sense (on page B-21)).
Make sure the warm-up criteria have been met, as described in the Performance verification
conditions.
To check DC overvoltage protection:
1. Set the voltmeter as follows:
 Set to measure DC voltage.
 Set the current range to autorange.
 Verify that the Math mx+b function is disabled (shift DCV), assuring that voltage is being read.
2. Set the electronic load as follows:
 Set to Constant Current.
 Set to draw 1 A.
3. Set the DUT to 100% of the full-scale output current.
4. Set the overvoltage protection (OVP) threshold to 10% of full-scale output voltage.
5. Set DUT output voltage 0.5 V lower than the OVP threshold and turn the DUT output ON.

Keithley 2280 Series Specifications

General

Brand	Keithley
Model	2280 Series
Category	Power Supply
Language	English