Hello All:
We are attempting simultaneous monitoring of 9 sound channels (AI) via a
6025E board, at close to the maximum sampling rate (200 kHz). We are
interested in registering the content of all nine 50ms buffers upon
triggering (the appearance of a sound spike in one of them), but our
problem is that we do not know a priori which channel will produce the
trigger (they are all equivalent). It seems as if in order to use
hardware triggering one must pass to the Analog Input VI's the channel
where the trigger is expected, rather than a list of them. The brute
force solution (to read the buffer continuously and do a software search
for the trigger) is giving us at best an 8% dead time, which is a bit
too high for our application.
Be
ing newcomers to Labview we are at a loss for a solution. Any tips
towards illuminating VI examples will be most appreciated!
Many thanks in advance,
Juan =:-)
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I have sent my cat on an errand of mercy,
a few coins and a note around his neck
to the Pope. My doubts tell me he is lounging
in a bar waiting for the King to die.
Stephen Dobyns
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Juan I. Collar
Groupe de Physique des Solides CERN
Universite Paris VII Denis Diderot EP Division
2 Place Jussieu, Tour 23 Geneve 23
75251 Paris 05 CH-1211
France Switzerland
E-mail: collar@gps.jussieu.fr E-mail: collar@mail.cern.ch
331-44 27 82 37 (W)
4122-767 8365 (W)
331-43 54 28 78 (Fax)
331-45 35 49 74 (H)
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