PS2520 Series Performance Verification
24
Handheld and Benchtop Instruments Basic Service
11. Ensure that the power supply output is disabled. Remove the leads from the
front panel OUTPUT 1 terminals and connect them to the front panel
OUTPUT 2 terminals. Maintain the equipment configuration and polarities
shown in Figure 3.
12. Repeat steps 5 through 9 above.
Series Operation. Use the following steps to check the series mode output
accuracy.
1. Press SHIFT
→ SERIES/INDEP to configure OUTPUT 1 and OUTPUT 2
for series operation. Verify that the “SERIES” indicator lights up on the
display.
2. Ensure that the power supply output is disabled. Connect the DMM and
electronic load to the front panel OUTPUT 2 (+) and OUTPUT 1 (–)
terminals. Maintain the equipment configuration and polarities shown in
Figure 3.
3. Repeat steps 5 through 9 of the Outputs 1 and 2 procedure above.
Parallel Operation. Use the following steps to check the parallel mode output
accuracy.
1. Keep the power supply set to OUT 2. Press SHIFT
→ PARA/INDEP to
configure OUTPUT 1 and OUTPUT 2 for parallel operation. Verify that the
“PARA” indicator lights up on the display.
2. Ensure that the power supply output is disabled. Connect the DMM and
electronic load to the front panel OUTPUT 2 terminals. Maintain the
equipment configuration and polarities shown in Figure 3.
3. Set the DMM to measure 5 amperes DC.
4. Set up the power supply as follows:
VOLTS SET 36 V
CURRENT SET 3.1 A
OVP SET 38.5 V
5. Press OUTPUT ON/OFF. Verify that the “OUT” indicator lights up on the
display.
6. Enable the electronic load. Adjust the load until the DMM current reads
3.000 A.
7. Adjust the output of the Variac from 108 to 132 VAC (120 V range) or 198
to 242 VAC (220 V range). Verify that the power supply VOLTS readout
changes ≤0.003 volts over the adjustment range.
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