ADLINK PXI-2502 - Manual (Page 30)

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• Operation Theoreym
Timebase, external input (AFI-1), or General Purpose Timer/Counter
Output 0/1.
Post-Trigger or Delay-trigger Acquisition with retrigger
Use post-trigger or delay-trigger acquisition with retrigger when users want
to perform repeated scans with respect to the repeated triggers. Figure
4.1.4 illustrates an example. Two scans are performed after the first trigger
signal, and then wait for the next trigger signal. When the trigger signal
occurs, it performs 2 more scans.
When re-trigger function is disabled, only one trigger signal would be ac-
cepted after retrigger
NOTE: Retrigger signals asserted during scan process will be ignored.
(NumChan_Counter=4, PSC_Counter=3)
Acquisition_in_progress
Scan_start
AD_conversion
Scan_in_progress
Acquired & stored data
(3 scans)
Operation start
Trigger
Figure 4.1.2 Post trigger