3: Constant voltage verification Series 2260B Programmable Power Supplies
Verification and Adjustment Manual
3-4 077104802 / November 2016
Before proceeding, make sure that the 2260B instrument is off.
To perform CV line regulation verification:
1. Connect the AC power supply to the 2260B.
2. Connect the DMM on the PCS-1000 directly across the +S and -S terminals to an electronic DC
load, as shown in the previous figure.
3. Turn on the 2260B and, if necessary, all of the other instruments.
4. Set the variable AC voltage to nominal line voltage.
5. Press the Set button on the 2260B and program the output current to its maximum value and the
output voltage to its maximum rated value (see Series 2260B available models (on page 1-1
)).
6. On the 2260B press the Output button.
7. On the electronic DC load instrument, set the electronic output load to 1 A. Note that CV is
displayed on the 2260B front panel. If CV is not displayed, adjust the load so that the output
current drops and CV is displayed.
8. Adjust the AC power source to the low-line voltage (85 VAC for 100/120 nominal line; 170 VAC
for 200/240 nominal line).
9. Record the DMM output voltage reading.
10. Adjust the AC power source to the high-line voltage (132 VAC for 100/120 nominal line; 265 VAC
for 200/240 nominal line).
11. Record the DMM output voltage reading.
The difference between the DMM reading in steps 9 and 11 is the source effect, which should not
exceed the value listed in the test record form (see Verification test record forms (on page 5-1
) for the
appropriate model, under CV line regulation).
Verifying CV line regulation is complete.
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