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4 - Running the Test
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Validation Mode
Validation Mode is a special mode used to validate the software, hardware, and test method used to test
to the harmonic current emissions regulation. It is not intended to be a formal proof of performance.
Validation Mode should only be used with the Quasi-Stationary Harmonics test type selected. It cannot
be used with Voltage Fluctuations. Additionally, validation of Voltage Fluctuations can be accomplished
without running Validation Mode.
Note Validation Mode is intended to be used with a high-power resistive load connected to the
6800-Series AC Power Source/Analyzer output, and should never be used with typical
equipment under test connected to the output. The 6800-Series AC Power
Source/Analyzer must have firmware revision A.00.07 or later.
To access Validation Mode:
1. Click on the Options drop-down menu at the top of the screen.
2. Click on “Validation Mode” to place a check mark next to the menu item. The checkmark indicates
that Validation Mode is on.
3. Run the harmonic current Pre-test or Test with Validation Mode turned on. Validation Mode limits
the Pre-Test and Test duration to a maximum of 30 seconds.
The intent of Validation Mode is to provide a controlled output current of known harmonic content,
which is subsequently measured during a harmonic current test. This is accomplished by applying the
Gibbs Phenomenon to an output voltage squarewave. In this case, the resulting validation waveform is a
squarewave function with all harmonic content above the 39
th
harmonic removed. The waveform has
overshoots and ringing near the square wave transitions. This output voltage is used to drive a high-
power resistive load, resulting in an output current of known harmonic content.
The harmonic current test methodology can be validated by comparing the measured test results from a
30 second harmonic current test with the known theoretical values of the validation waveform. The
measured test results must be evaluated to ensure the measurements do not exceed the total error allowed
by the harmonic current emissions regulation. Contact your local Agilent Sales and Support Office for
more information.