Boonton 4530 Peak Power Meter User Manual - Manual (Page 56)

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Chapter 3 Boonton Electronics
Operation 4530 Series RF Power Meter
3.11.5 Statisticl Menu.
The Statisticl menu is used to configure data acquisition and measurement parameters for statistical mode
operation. Statistical mode is a special operating mode that acquires a very large sample population, and
analyzes the distribution of power levels rather than the measuring power in the time domain as is done in
conventional power meters. This mode uses peak power sensors only, and is useful for measuring signals
that don’t have a periodic or predictable time component on which to trigger.
Main Menu > Statisticl > Horz Span
Select the horizontal display span for the Statistical Mode graph display. Note that display scaling does not
affect the statistical mode measurement in any way. Full power and probability resolution are available in all
settings.
Range: 1 to 100% in a 1-2-5 sequence.
Default: 100%
Remote Command: DISPlay:%SPAN <n>
Main Menu > Statisticl > % Offset
Select the horizontal display offset for the Statistical Mode graph display. Note that display scaling does not
affect the statistical mode measurement in any way. Full power and probability resolution are available in all
settings.
Range: 0 to (100 - HorzSpan) %
Default: 0%
Remote Command: DISPlay:%OFST <n>
Main Menu > Statisticl > Stat Mode
Select the Statistical Mode display presentation format.
CDF Stat Cumulative distribution function. The measurement is the probability that the
power will be below a particular level. This results in the highest probabilities
corresponding to the highest power levels. The peak power is at 100.0% CDF,
which will appear on the right side of the graph display. (Default)
1 - CDF Inverse (complimentary) CDF, also known as CCDF. The measurement is the prob-
ability that the power will be above a particular level. This results in the lowest
probabilities corresponding to the highest power levels. The peak power is at
0.0% CCDF, which will appear on the left side of the graph display. This display
presentation is generally easier to use, since changing the span will have the effect
of zooming in on the peak power area
Distribut Probability distribution histogram. A bar-type histogram is displayed. Ten bars
are displayed, which represent an equal spread of ten power ranges across the
current vertical span setting. When log units are in use, each histogram bar will
span an even number of dBm. For linear units, each bar spans an even number of
milliwatts.
Remote Command: CALCulate:MODe <CDF, 1-CDF, DIST>