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Transitional Acquisition Mode
When the logic analyzer is operating in the Transitional Acquisition
mode, it samples the data at regular intervals, but it stores data in
memory only on transitions in the signals. A time tag that is stored with
each sample allows reconstruction of the samples in the Timing
Waveforms display.
Transitional timing always samples at a rate of
100
MHz
(10
n&le). This provides maximum timing resolution even in
records that span long time windows. Time covered by a full memory
acquisition varies with the number of pattern changes in the data. If
there are many transitions, the data may end prior to the time window
desired because the memory is full. However, a prestore qualification
in your logic analyzer insures that data will be captured and displayed
between the left side of the screen and the trigger point.
Figure
18-3
illustrates Transitional acquisition, comparing it to
Traditional acquisition.
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0165UM6
Figure 18-3. Transitional vs. Traditional Acquisition
Timing Trace Specification
Menu
18-4
HP 16528/1653B
Front-Panel Reference
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