Agilent Technologies EN 60555 用户手册
Running the Test - 4
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To Run a Pre-test for Voltage Fluctuations
Pre-Test Summary
1. Select the Pre-test menu tab on the bottom of the screen to access the Pre-test Summary
window. You can also access the Pre-test window from the View/Pre-test menu.
2. If desired, change the time delay from when power is applied until the pre-test is run. The default
pre-test time is 10 seconds.
3. It is also possible to increase the duration of the pre-test. One purpose of running a longer pre-
test is to obtain more data over which the test results are averaged. Additional data more
accurately characterizes the worst-case operation of the equipment under test (see “Pre-test
Measurements” for more information).
accurately characterizes the worst-case operation of the equipment under test (see “Pre-test
Measurements” for more information).
4. Press the Run Pre-test button to run the pre-test.
NOTE:
Running a pre-test from a file that already contains data will not only overwrite the pre-
test data, but will also delete the existing test data.
test data, but will also delete the existing test data.
5. Use the Print Screen command located in the File menu to print the Pre-test window.
For the Voltage Fluctuations test, the pre-test waveform display is not required by EN 1000-3-3. It does
however, provide information about the input waveform and other measured parameters for the
equipment under test. For example, any abnormalities in the input waveform will be apparent in this
however, provide information about the input waveform and other measured parameters for the
equipment under test. For example, any abnormalities in the input waveform will be apparent in this