Publication No. 980935 Rev. A
3152B User Manual
EADS North America Test and Services
Operation 3-21
Waveforms
download memory segments to the 3152B.
For maximum flexibility, you may download waveforms to the
3152B from your own program. The following example shows how
to clear the partition table and set up three memory segments of
4,000, 1,000, and 64 sample points:
First, clear the entire memory partition table to eliminate any
fragmented segments. Use the delete command as follows:
trac:del:all
Removes the entire partition table and
allows you to define new segments.
Next, define the waveform memory segments by specifying each
segment number and its length:
trac:def 1,4000
Defines the length of segment #1 to be
4,000 sample points. Waveforms
downloaded to this segment must
have exactly 4,000 sample points.
trac:def 2,1000
Defines the length of segment #2 to be
1,000. Waveforms downloaded to this
segment must have exactly 1,000
sample points.
trac:def 3,64
Defines the length of segment #3 to be
64. Waveforms downloaded to this
segment must have exactly 1,000
sample points.
This completes the setup for the three memory segments.
Alternatively, you may use the following command to create the
entire partition table at once:
segm <array>
Downloads the entire memory partition
table to the instrument in one
operation.
Once you have defined the waveform memory segments, the next
step is to specify the active segment. This sets up the following
conditions:
1) The next time you download data to the 3152B, it will go to the
active segment (the 3152B will accept downloaded data only if a
segment is designated as active).
2) The waveform contained in the active segment will appear at
the output the next time you turn on the output.
3) The SYNC output is associated with the active segment. This is
not important in arbitrary mode, but in sequenced mode, the
segments may be arranged in any order. Therefore, the location
of the sync signal is important because it may appear at the
middle of the sequence and not with the first segment.
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