PS280 and PS283 Performance Verification
Handheld and Benchtop Instruments Basic Service
11
Constant Voltage Regulation Check
To check the constant voltage regulation of your power supply, perform the
following tests.
–+
Power supply
R
L
DMM
Figure 4: Constant Voltage Test Setup
The following check verifies the MASTER voltage regulation performance.
1. Set the power supply to the INDEP operating mode by disengaging both
TRACKING mode switches (both switches out).
2. Set up the digital multimeter to measure 60 VDC.
3. Connect the digital multimeter and load resistors to the + and – terminals of
the power supply MASTER output as shown in Figure 4. See Table 9 for the
appropriate load resistor values.
4. Verify that you can adjust the power supply from 0 to 30 V.
5. Set the power supply to the SERIES operating mode by engaging the left
TRACKING mode switch (switch in) and disengaging the right TRACKING
mode switch (switch out).
6. Verify that you can adjust the power supply from 0 to 60 V.
7. Set the power supply to the PARALLEL operating mode by engaging both
TRACKING mode switches (both switches in).
8. Verify that you can adjust the power supply from 0 to 30 V.
MASTER Voltage
Regulation
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