ADLINK PXI-2006 - Manual (Page 60)

50 Operation Theory
for timed waveform gen-eration, which means when it is to stop
the waveform generation. You can apply these 3 modes to stop
waveform generation no matter infinite or finite waveform gen-
eration mode is selected.
Figure 4-20 illustrates an example for stop mode I, in this mode
the waveform stops immediately when software command is
asserted.
In stop mode II, after a software stop command is given, the
waveform generation won’t stop until a complete single wave-
form is finished. Take Figure 4-21 for an example, since
UC_counter is set to 4, the total DA update counts (that is,
number of pulses of DAWR signal) must be a multiple of
4.(update counts = 20 in this example)
In stop mode III, after a software stop command is given, the
waveform generation won’t stop until the performed number of
waveforms is a mul-tiple of IC_Counter. Take Figure 4-22 for an
example, since IC_Counter is set to 3, the total generated
waveforms must be a multiple of 3(waveforms = 6 in this exam-
ple), and the total DA update counts must be a multiple of
12(UC_counter * IC_Counter). You can compare these three
figures to see their differences.
Figure 4-20: Stop mode I (Assuming the data in the data buffer are 2V, 4V,
2V, 0V)