152 Agilent X-Series Signal Generators User’s Guide
Basic Digital Operation (Option 653/655/656/657)
Waveform Sequences
Creating a Sequence
A waveform sequence can contain up to 1,024 segments and have both segments and other sequences
(nested sequences). The signal generator lets you set the number of times the segments and nested
sequences repeat during play back. But there is a difference between repeating a segment versus
repeating a nested sequence. Each segment can repeat up to 65,535 times, but no matter how many
times a segment repeats, it counts as a single segment. However each repetition of a nested sequence
counts as additional segments.
The maximum number of times that a nested sequence can repeat is based on the number of
segments in the nested sequence and the remaining number of allowed segments (1,024). For
example, with a sequence that contains 24 segments and one nested sequence with 4 segments, the
nested sequence is limited to 250 repetitions:
24 + (4 × 250) = 1,024 maximum number of segments per sequence
Even though there is a limiting factor on the maximum number of times that a nested sequence can
repeat, each segment within the nested sequence can repeat up to 65,535 times.
Example
Use the following procedure to create and store a waveform sequence using one repetition each of
two different segments.
Assumption: The waveform segments are in BBG media (volatile memory). For information on loading
waveform segments into BBG media, see page 148.
1. Select the first segment:
a. Press Mode > Dual ARB > More > Waveform Sequences > Build New Waveform Sequence > Insert
Waveform.
b. Highlight the desired waveform segment and press Insert.
2. Select the second segment:
a. Highlight the next desired waveform segment and press Insert.
b. Press Done Inserting
Waveform
Sequence
Sequence A
Sequence B
Sequence A
repeated 4x
Segment 1
Segment 2
Segment 3
2 segments
9 segments
11 segments
8 Segments
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