User`s guide

86 Chapter 3
Basic Digital Operation
Using the Dual ARB Waveform Player
Playing a Waveform
This procedure applies to playing either a waveform segment or a waveform sequence.
This example plays the waveform sequence created in the previous procedure.
1. Select a waveform sequence:
a. Press
Mode > Dual ARB > Select Waveform.
b. Highlight a waveform sequence (for this example, TTONE+MTONE) from the Sequence column of
the Select Waveform catalog, and press
Select Waveform.
The display shows the currently selected waveform
(for example, Selected Waveform: SEQ:TTONE+MTONE).
2. Generate the waveform:
Press
ARB Off On to On.
This plays the selected waveform sequence.
During the waveform sequence generation, the ARB and I/Q annunciators activate.
Editing a Waveform Sequence
This example shows how to edit waveform segments within a waveform sequence, and then save the
edited sequence under a new name. Within the editing display, you can change the number of times
each segment plays (the repetitions), delete segments, add segments, toggle markers (described on
page 97), and save changes.
NOTE If you do not store changes to the waveform sequence prior to exiting the waveform
sequence editing display, the changes are removed.
1. Press Waveform Sequences > Edit Selected Waveform Sequence, and highlight the first entry.
2. Press
Edit Repetitions > 100 > Enter. The second segment is automatically selected.
3. Press
Edit Repetitions > 200 > Enter.
4. Save the edited file as a new waveform sequence:
a. Press
Name And Store.
b. Press
Editing Keys > Clear Text, then enter a new file name (for example, TTONE100+MTONE200).
c. Press
Enter.
You have now changed the number of repetitions for each waveform segment entry from 1 to 100 and
200, respectively. The sequence has been stored under a new name to the Catalog of Seq Files in
the signal generator’s memory catalog.
For information on playing a waveform sequence, refer to page 86.
Adding Real-Time Noise to a Dual ARB Waveform
The signal generator with option 403 can apply AWGN (additive white gaussian noise) to a carrier in
real time while the modulating waveform file is being played by the Dual ARB waveform player. The
AWGN can be configured using front- panel softkeys. The
Carrier to Noise Ratio softkey allows you to
specify the amount of noise power relative to carrier power that is applied to the signal. The
Carrier