ADLINK PXI-2006 User Manual

Page 56

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46

Operation Theory

Figure 4-15: Post trigger waveform generation (Assuming the data in the

data buffer are 2V, 4V, 6V, 3V, 0V, -4V, -2V, 4V)

Delay-Trigger Generation

Use delay trigger when you want to delay the waveform gener-
ation after a trigger event. In Figure 4-16, DA_DLY1_counter
determines the delay time from the trigger signal to the start of
the waveform generation. DLY1_counter counts down on the
rising edge of its clock source after the trigger condition is met.
When the count reaches 0, the counter stops and the DAQ/
PXI-20XX starts the waveform generation. This DLY1_Counter
is 16-bit’s wide and users can set the delay time in units of
TIMEBASE (delay time = DLY1_Counter/TIMEBASE) or in
units of update period (delay time = DLY1_Counter *
UI_counter/TIMEBASE), such that the delay time can reach a
wider range.

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