To Display Ccdf - Agilent Technologies 89410A Operator's Manual

Making Statistical Power Measurements

To display CCDF

This procedure shows you how to display the Complementary Cumulative
Density Function (CCDF). The procedure uses the analyzer's source to
generate random noise and to display the CCDF of the random noise.
1.
Preset the analyzer.
Press [ ], [
Instrument Mode
89410A: [
input section (0-10 MHz)
89441A: [
RF section (0-10 MHz)
Press [ ].
Preset
2.
Select the Vector instrument mode.
Press [ ] [
Instrument Mode
3.
Connect the analyzer's source to the channel 1 input.
4.
Set the source level to 0 dBm, select random noise, and activate the source.
Press [ ], [ 0 dBm.
Source level]
Press [ ], [
source type random noise
Select [ ].
source on
5.
Set the range to 10 dBm.
Press [ ] 10 dBm
Range
6.
Enable time-domain corrections.
Press [ ], [
System Utility
7.
Set the frequency span to 5 MHz to band-limit the random noise signal (this
turns on the analyzer's LO and zooms the time data).
Press [ ], [
Frequency span]
8.
Display the CCDF trace.
Press [
Measurement Data
CCDF (complementary cumulative density function) is a statistical
power-measurement that is the complement of CDF, as follows:
CDF: Probability (P
CCDF: Probability (P
= Instantaneous power
where:
P
inst
= Average power
P
average
5 - 2
], then press:
receiver
].
].
].
Vector
], [ ]
return
.
].
time domain cal on
, 5 MHz.
], [ ], [ ].
more choices CCDF ch1
≤ P )
inst average
≥ P )
inst average