ADLINK USB-1903 - Manual (Page 68)

54 Operation
After two trigger signals, as specified in Trig_Counter, no more
trigger signals will be accepted unless a trigger reset command
is executed. For more information on the Iterative Waveform
Generation in this example, please see the next section.
Figure 4-16: Post-Trigger or Delayed-Trigger with Retriggering
Iterative Waveform Generation
You can set the IC_counter to generate iterative waveforms
regardless of the trigger mode used. The IC_counter stores the
iteration number, as shown in the following two examples.
WARNING:
Start trigger signals asserted during waveform generation will
be ignored.
WARNING:
When the IC_counter is disabled, waveform generation will
continue until the counter is reset.
UC_Counter = 3
3 update counts and 2 iterations
UC_count = 3, IC_count = 2, Trig_count = 3, DLY1_count disabled, DLY2_count
disabled
Trigger
DAWR
WF_in_Prog
Wave
Ignored
Single waveform