Data acquisition and generation with PCI-MIO-16E-4 card help!!!!

[Le Trong Thao]

Hello,

I'm using a PCI-MIO-16E-4 card with labview7 (in using DAQmx)and I
would like to draw a frequency response.

My problem is: my program can run correctly in low frequency but, it
can't work correctly in high frequency (after 2KHz the signal is
false).
For verifying my program: I only try to generate and acquire a sweep
sine. I constate after 2KHz the sine I read dosn't resemble to a sine
I wrote.
Can you say me where is the problem?

Thank you.

Le Trong Thao.

[Dr._Imad]

my understanding is that you are generating a sine wave (on one of the anlogoutput channels) and you are trying to read the signal.
Since you can verify the signal at low frequency, but not at high frequency, it looks like you should increase the scan rate of the data acquistion (if you can, set it to 10 times the signal frequency)
You can also use an oscilloscope to verify the signal is what you really generated.

[Le Trong Thao]

"Dr. Imad" wrote in message news:<506500000005000000AD820100-1079395200000@exchange.ni.com>...
> my understanding is that you are generating a sine wave (on one of the
> anlogoutput channels) and you are trying to read the signal.
> Since you can verify the signal at low frequency, but not at high
> frequency, it looks like you should increase the scan rate of the data
> acquistion (if you can, set it to 10 times the signal frequency)
> You can also use an oscilloscope to verify the signal is what you
> really generated.


Thank you for your response.

I've tried to do it, and I've tried several other possibilities but it
doesn't work correctly.

In fact, I think the problem is in my program. Do you have a program
that works correctly? I f
ound examples in the help but they don't run
correctly.

Le Trong Thao.