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Chapter 4 139
Making Measurements
Making the Power Stat CCDF Measurement
Changing the View
The View/Trace key is not available for this measurement.
Changing the Display
The Display key allows you to control the desired trace and line displays
of the power statistics CCDF curves. The currently measured curve is
always shown. See Figure 4-13 on page 137 for an example of a power
statistics CCDF measurement display.
•
Store Ref Trace - Allows you to copy the currently measured curve as
the user-definable reference trace. The captured data will remain
until the other mode is chosen. Pressing this key refreshes the
reference trace.
•
Ref Trace - Allows you to toggle the reference trace display function
between
On and Off.
•
Gaussian Line - Allows you to toggle the Gaussian line display
function between
On and Off.
The
Span X Scale key accesses the menu to set the desired horizontal
scale.
•
Scale/Div - Allows you to enter a numeric value to change the
horizontal display sensitivity. The range is 0.10 to 20.00 dB with
0.01 dB resolution. The default setting is 2.00 dB.