116 Chapter 3
Basic Digital Operation
Triggering Waveforms
NOTE In the real–time Custom mode, the behavior is reversed: when the gating signal is high, you
see the modulated waveform.
Using Segment Advance Triggering
Segment advance triggering enables you to control the segment playback within a waveform sequence.
The following example uses a waveform sequence that has two segments.
If you have not created and stored a waveform sequence, complete the steps in the sections,
“Creating Waveform Segments” on page 92, and “Building and Storing a Waveform Sequence” on
page 93.
1. Preset the signal generator.
2. Configure the RF output:
• Set the desired frequency.
• Set the desired amplitude.
• Turn on the RF output.
3. Select a waveform sequence for playback:
a. Press
Mode > Dual ARB > Select Waveform.
b. Highlight a waveform sequence file.
c. Press
Select Waveform.
4. Select the waveform trigger method and trigger source:
a. Press Trigger > Segment Advance.
b. Press
Trigger > Trigge r Se tu p and note that the Seg Advance Mode softkey displays the default
selection (Continuous), which is the selection used in this example.
c. Press
Trigger Source > Trigger Key.
Externally Applied Gating Signal
Gate Active = High
RF OutputModulating Waveform
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