Keysight E8663D, Руководство пользователя

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Keysight E8357D/67D & E8663D PSG User’s Guide 253
Multitone Waveform Generator
Creating, Viewing, and Optimizing Multitone Waveforms
Creating, Viewing, and Optimizing Multitone Waveforms
This section describes how to set up, generate, and optimize a multitone
waveform while viewing it with a spectrum analyzer. Although you can view a
generated multitone signal using any spectrum analyzer that has sufficient
frequency range, an Keysight Technologies PSA high–performance spectrum
analyzer was used for this demonstration. Before generating your signal,
connect the spectrum analyzer to the signal generator as shown in Figure 9-1 .
Figure 9-1 Spectrum Analyzer Setup
To Create a Custom Multitone Waveform
Using the
Multitone Setup
table editor, you can define, modify and store
user–defined multitone waveforms. Multitone waveforms are generated by the
dual arbitrary waveform generator.
1. Preset the signal generator.
2. Set the signal generator RF output frequency to 20 GHz.
3. Set the signal generator RF output amplitude to 0 dBm.
4. Press Mode > Multitone > Initialize Table > Number of Tones > 9 > Enter .
5. Press Freq Spacing > 1 > MHz .
6. Press Initialize Phase Fixed Random to Random.
7. Press Done .
8. Press Multitone Off On to On.
9. Turn on the RF output.
The multitone signal should be available at the signal generator RF OUTPUT
connector.
Figure 9-2 shows what the signal generator display should look like after all
steps have been completed. Notice that the
M–TONE
,
I/Q
,
RF ON
, and MOD
ON annunciators are displayed and the parameter settings for the signal are
shown in the status area of the signal generator display. The multitone
waveform is stored in volatile ARB memory.