NI Oscilloscope Measurement Problem

[RS 485 Communication]

I have a very different problem regarding NI-5102 Oscilloscope Card

Problem 1:

This card is performing self test through the measurement & automation explorer. But through its driver program its showing failed. As there is self test vi in niscope.llb. It should return 0 for passed,
but its returning 1.And also from front panel of this card, its working well.


Problem 2:

Through front Panel of Oscilloscope i am able to see all the wave and also measure frequency, But through program it not giving any value, may be some settings are necessary for this problem. So u see this problem or if possible, u send a simple vi program for measurement of frequency of any wave (TTL pulse, sine wave).

Waiting for your response,

J
itendra :: mail me jitendra_hal@rediffmail.com

[Annette Perez]

Jitendra,

When running the niScope SelfTest.vi, you usually receive a message indicating that the device passed the test and you should also receive a number 0 in the test result indicator. If the board is not passing the test, make sure that no other programs are using the same device (like MAX or the Scope Soft Front Panel). Adding an niScope Error Handler after the niScope Close will help us have more information of what is happening. With the error code, you can then visit ni.com and look for any Knowledge Bases that talk about this issue in particular.

Regarding the second problem, there are some pretty good example programs on the web that show how to do frequency analysis using NI digitizers. I am including links to some of them. Hope this help
s!

Frequency Spectrum Analyzer for NI-SCOPE (NI 5911/NI 5112)

Frequency Response (step response method)

Annette Perez
Applications Engineering
National Instruments.