ADLINK PXI-2006 - Manual (Page 49)

Operation Theory 39
data. The total acquired data length = number of enable-chan-
nel * PSC_counter.
Figure 4-11: Delay trigger
Note: When the Delay_counter clock source is set to TIMEBASE,
the maximum delay time = 216/40M s = 1.638ms, and when
the source is set to A/D sampling clock, the maximum delay
time can be as higher as (216 * SI_counter / 40M ).
Post-Trigger or Delay-trigger Acquisition with re-trigger
Use post-trigger or delay-trigger acquisition with re-trigger
function in ap-plications where you want to collect data after
several trigger events. The number of scans after each trigger
is specified in PSC_counter, and users could program
Retrig_no to specify the re-trigger numbers. Figure 4-12 il-lus-
trates an example. In this example, 2 scans of data is acquired
after the first trigger signal, then the card waits for the re-trigger
signal (re-trigger signals which occur before the first 2 scans is
completed will be ignored). When the re-trigger signal occurs, 2
more scan is performed. The process repeats until specified
amount of re-trigger signals are detected. The total acquired
data length = number of enable-channel * PSC_counter * Re-
trig_no.