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Running the Test - 4
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Pre-Test Power Statistics
This screen provides additional information about the active input power of the device under test. It
displays the following power measurements, which are calculated at the end of the pre-test:
- Maximum Power in watts (default selection for setting Class D limits)
- Mean Power in watts
- Standard Deviation in watts
- specified Percentile in watts
The Percentiles area displays the results of a statistical evaluation of the active input power during the
pre-test. Percentile values are displayed according to the selected scale increment. Scale increments of
10, 5, or 1 may be specified. A scale increment of 1 displays all percentile values.
If you are testing Class D equipment, the Use to set limits area is active, letting you specify what type of
Watts measurement will be used by the Agilent 14761A HFTS software as the basis for calculating Class
D test limits. Select from: Maximum Power (the default), Mean Power, or specified Percentile. This
provides you with greater flexibility for specifying Class D test limits.
Note: Based on your selection, you can see what the Class D test limits will be by acccessing
the Display Table window. The Class D limits are shown in the Limits column.
You can also override the pre-test watts measurement later in the Advanced Test Setup
window in the Test Limit Overrides section.