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NI 4451 and circular buffered acquisition (newbi)

I need to acquire data from a single channel with a NI 4451
board and a BNC-2140 interface. I tried to run examples for
continous acquisition and i noted that the process stopped when
the data collected size is the same of buffer size (the graph of
the data stopped to display new samples) but the while loop of
the reading process is still working (the iteration goes on if i
probe it). I would like to use intermediate VI`s because i need
to perform a simultaneous acquisition-generation process with
the same while loop. I tried to use AI multi-point vi inside a
while loop to realize a continous acquisition but it seems to
be not good for my needs. thanks for your help


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