ADLINK PXI-2006 - Manual (Page 59)

Operation Theory 49
Figure 4-19: Infinite iterative waveform generation with Post-trigger and
DLY2_Counter = 0 (Assuming the data in the data buffer are 2V, 4V, 2V, 0V)
Note:
1. When running infinite iterative waveform generation, set-
ting IC_Counter is ineffective to the waveform genera-
tion. It only makes a difference when setting stop mode
III, please refer to section 4.2.2.3.
2. How to set finite and infinite iterative waveform genera-
tion is not in-cluded in this manual. Please refer to soft-
ware manual for further in-formation.
Delay2 in Repetitive Waveform Generation
To diversify the D/A waveform generation, we add a DLY2
Counter to separate 2 consecutive waveforms in repetitive
waveform generation. The time between two waveforms is set
by the value of DLY2 Counter. The Delay2 counter starts to
count down after a waveform generation finishes, and the next
waveform generation starts right after it counts down to zero,
just as shown in Figure 21. This DLY2_Counter is 16-bits wide
and users can set the delay time in units of TIMEBASE (delay
time = DLY2_Counter/TIMEBASE) or in units of update period
(delay time = DLY2_Counter * UI_counter/TIMEBASE), such
that the delay time can reach a wider range
Stop Modes of Scan Update
You can call software stop function to stop waveform genera-
tion when it is still in progress. Three stop modes are provided