Why can't i reach the required sampling frequency?

Question

Hi every one,
I've got troubles
with my program. I wanted to measure signals from PT100 and
thermocouples, but whereas my card (NI SCXI 1102B card for the
thermocouple, and a PCI-6220 card for the PT100) can support 333kS/s, I
can't go faster than 40S/s approximatively  (I use the optimizing timed
loop rate.vi, and the part of my program in the attached file, can't
run faster than 300ms, which decrease my acquisition frequency).
Is it hardware or software issue? What are my error?
cheers
R.Muller
hardware configuration:
windows XP professionnel
version 2002
service pack2
AMD Athlon(tm) XP2400+
2.00 GHz,  960 Mo RAM
LabVIEW 7.1
Attachments:
optimisation.vi ‏56 KB

Answer 1

Duplicate: http://forums.ni.com/ni/board/message?board.id=4170&thread.id=25933
Aurélien J.
National Instruments France
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