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Possible bug in Polymorphic AI Single Scan?

I'm trying to use the AI Single Scan VI to read a set of 3 analog input
channels (2 differential, 1 rse) under LabView 6i, but I'm having some
strange problems. The output is polymorphic, so I select the output type I
want by popping up and going to "Select Type" and picking the output style
I'm looking for.

Here's the problem: I cannot get the Single Scan to reliable return Scaled
& Binary data at the same time! Either "Scaled" or "Binary" mode works, but
when I select "Scaled & Binary" it only returns data in one of the two
arrays--the other is left empty. What's more, the array which contains data
seems to depend on the _last_ way I had the VI configured (i.e. if I do
"Binary" and then "Scaled & Binary"
it returns the binary data but NOT the
scaled, while conversely if I start with "Scaled" and then select "Scaled &
Binary" it's the scaled data that gets returned properly.)

This looks to me like it might be a bug in LabView 6i. I haven't
exhaustively tested it, but what I'm doing isn't exactly complicated, and I
was able to do the same thing back in Labview 5.x.x with no difficulty. Is
there something I'm doing wrong?

Justin Goeres
Indio Systems, Inc.
Pleasanton, CA
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Justin,

This sounds like an issue that was reported in NI-DAQ 6.8. It has since been fixed in NI-DAQ 6.9. I would recommend updating your NI-DAQ driver and see if that fixes the problem. You can download NI-DAQ 6.9 from www.ni.com/softlib.nsf/. Hope this helps.

Regards,
Erin
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