PCIE-1816_1816H User Manual 44
Delay to Start Trigger Acquisition Mode
In delay to start trigger mode, data acquisition will be activated after a preset delay
number of SCAN CLKs has been taken after the trigger event. User can set the delay
number of SCAN CLKs by a 32-bit counter. Delay to start trigger acquisition starts
when the PCIE-1816/1816H detects the trig-ger event and stops when you stop the
operation.
Delay to Stop Trigger Acquisition Mode
When you want to acquire data both before and after a specific trigger event occurs,
users should take advantage of the delay to stop trigger mode. First designate the
size of the allocated memory and the amount of samples to be snatched after the
trigger event happens. The trigger acquisition starts when the first SCAN CLK signal
comes in. Once a trigger event happens, the on-going data acquisition will continue
until the designated amount of SCAN CLKs have been reached. When the PCIE-
1816/1816H detects the selected about-trigger event, the card keeps acquiring the
preset number of samples, and keeps them in the buffer.
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