Agilent Technologies E8247C PSG CW - Manual (Page 187)

Chapter 8 177
Multitone Waveform Generator
Creating, Viewing, and Optimizing Multitone Waveforms
To Determine Peak to Average Characteristics
This procedure describes how to set the phases of the tones in a multitone waveform and determine the peak
to average characteristics by plotting the complementary cumulative distribution function (CCDF).
1. Press
Mode > Multitone > Initialize Table
>
Number of Tones
>
64
>
Enter
.
2. Press
Freq Spacing
>
20
>
kHz
.
3. Press
Initialize Phase Fixed Random
to Fixed.
4. Press
Done
.
5. Press
Apply Multitone
.
6. Press
More (1 of 2) > Waveform Statistics > Plot CCDF
.
You should now see a display that is similar to the one shown in Figure 8-7 . The CCDF plot displays the
peak to average characteristics of the waveform with all phases set to zero.
Figure 8-7 CCDF Plot with Fixed Phase Set
7. Press
Mode Setup > Initialize Table
.
8. Press
Initialize Phase Fixed Random
to Random.
9. Press
Random Seed Fixed Random
to Random.
Peak
Power