Order analysis tools with NI 4472

[MiamiVipul]

Hello:

I'm new to Labview and I have used Vibration toolkit for ablut an year. I recently purchased the Order Analysis Toolkit and trying to run my first example with no luck so far.

I have NI4472 DSA card, two analog displacement sensors connected to two analog input channels, and an encorder with one pulse per revolution, connected to External Trigger input. I have been using this hardware setup for all my vibration related testing using vibration toolbox.

When I tried to use NI Examples (Eg. Vector Reference Signal Processing (Analog Tacho, DAQmx), or any of the NI Order Analysis examples), I could not locate my device under "DSA Device" selection box (see attached figure). It does not list my device or the analog input channels, as it used to do in vibration toolbox.

Will you please explain how to get these examples running with my hardware. Even a simple example would greatly help.

Thank a lot.

Vipul.

[Travis_W]

Hi Vipul,

Starting with the example programs is definitely the way to go.

Can you see your 4472 under NI-DAQmx Devices in Measurement in Automation Explorer? 
If so, then it should be selectable from the drop-down menu in the example you are trying.

If not, then there is a problem.  Make sure that you have NI-DAQmx Installed and that the installation includes "LabVIEW 7.x Support."  I noticed that the VI in the screenshot you sent was not executable, so this may well be the issue.

Go here to download the latest version of NI-DAQmx.
If you already have DAQmx installed, but no support for it in LabVIEW 7.1, then you can go to
Start>>Control Panel>>Add/Remove Programs
then select "National Instruments Software" and choose to change.
From the list, select NI DAQmx X.X, and choose to modify.
In the feature tree, choose to include support for LabVIEW 7.1.

If none of the above helps you out, let me know.  I definitely want to make sure you get up and running with the OAT.

Cheers,
Travis W

[MiamiVipul]

Hi Travis:

Thanks a lot for the reply. Actually, I have support for Labview 7.1 (see figure) as I was using my DSA with vibrations toolkit. This problem is only with the new Order Analysis Toolkit, as I cannot use any of the examples came with the help. I can easily pull any other example from help in Vibrations toolkit and run without any modification.

I went into the code and modified Order Power Spectrum (Analog Tacho, DAQmx). VI and oax_AI Config (DAQmx).VI files, as shown in my attached figure. Again, I simply opened  oax_AI Config  and deleted and imported oax_Config AI Channel (DAQmx).VI . This way, it started showing unbroken arrow. I lost the DAQmx Buffer part and I do not know the impact of it. Looks like a hard way to start running the examples! But is there any other way? Do I have to download the latest DAQmx and re-install it?

Any help is highly appreciated.

Thanks.

Vipul. 

[dsb@NI]

Is it possible that the Order Analysis example VIs might have been mass compiled while DAQmx was not installed? If DAQmx appears to be installed correctly (and that seems to be the case if you can run other DAQmx examples), you can uninstall the Order Analysis Toolkit and then reinstall it. The examples should then be ready to use. If not, let us know.

[MiamiVipul]

Hi Doug:

Thanks for the quick reply.

I downloaded the latest DAQmx and installed it, and then reinstalled the OAT. Now everything works fine.

Thanks.

Vipul.