Model 2231A-30-3 Triple-Channel DC Power Supply Performance Verification
Section 3: Performance Verification
077102700/ July 2014
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For each channel sequentially.
1. Plug the DUT into your local line power from the mains.
2. Plug the test oscilloscope into the same mains outlet as the DUT.
Some AC Power Sources create large amounts of high-frequency noise on the power line that the
instrument may not fully reject. Noise directly on the mains is typically better controlled.
Use the same mains outlet for both the DUT and test oscilloscope to avoid ground loops which may
cause noise.
3. Power on the DUT and test oscilloscope.
Ensure the warm-up criteria have been met, as described in the Performance Verification Conditions
topic.
4. Set up the equipment as shown. Use the appropriate load resistor depending on the channel
being tested.
Figure 4: 20 MHz test setup