Boonton 4500B Peak Power Meter - Manual (Page 68)

Boonton 4500B RF Peak Power Analyzer
Getting Started 3-34
MENU ITEM EXERCISE
TIME (continued)
Time (Statistics)
Press the Time (Statistics) > Stat Mode menu key to determine how the captured > Stat Mode
data is plotted. The 3 choices are complementary cumulative distribution function (CCDF) the
default mode, cumulative distribution function (CDF, and probability distribution function (PDF).
The CCDF (also known as 1-CDF) plot presents the data as the percent of total samples above a
selected level.
The CDF plot presents the data in a running total by level which can be read by markers or
reference lines as the percent of total samples at or below a selected level.
The PDF plot presents the percentage of samples that lie within equal sized bins. The number of
bins per division can be specified. The PDF display is for interpretation and is not usually used to
make measurements.
Time (Statistics)
Press the Time (Statistics) > PDF Bars to select the number of bars that make
> PDF Bars up the PDF display. The bars correspond to sample data bins. Use any of the
data entry controls to enter 1 to 35 bars/Div.
Time (Statistics)
Press the Time (Statistics) > Term Settings menu key to display the termination > Term Settings
settings menu.
Time (Statistics)
Press the Time (Statistics) > Term Settings > Term Action to control the
> Term Settings measurement process when a terminal condition is met. Statistical measurements
> Term Action are often thought of as a single Start-Stop sequence. With the histogram cleared to zero, samples
are accumulated for a fixed sample total count or until available memory is full, when the
measurement automatically stops.
Term Action ―Stop‖ automatically stops the measurement when a terminal condition is met. .
Term Action ―Flush‖ automatically starts a new measurement when a terminal
condition is met.
Terminal Action ―Decimate‖ on detecting a terminal condition, automatically divides the
histogram and count by 2, and continues the measurement. This allows the measurement to run
indefinitely without overflow, but limits the lowest event probability that can be detected.
Time (Statistics)
Press the Time (Statistics) > Term Settings > Term Action > Term Time to set
> Term Settings a terminal condition in running time. Set ―Off‖ to disable running time as a
> Term Time terminal condition. Use any of the data entry controls to enter a time in seconds. Limits are 1 to
3600 seconds.