vibration analysis using swept sine

[firaol]

I have NI cDAQ-9172 chessis,(NI 9263 for Analog output to amplifier and Ni 9233 for anlalog input from the accelerometers.), power amplfier, electrodynamic shaker

and two accelerometers that measure the relative accelaration of my spciemen placed on the shaker table.  I have tried to use "getting started with swept sine  "Sound and vibration toolkit. Can anyone please suggest the right VI to start with ?( the one that best suited to my application and easier to modify ).  How can I use sound vibration toolkit with the modules I have ?Any ideas are welcome.

[dsb@NI]

Are the accelerometers connected such that one of the accelerometers is mounted to the table and the other to the device under test (DUT)? If so, I would expect the Getting Started with Swept Sine example to work for your application with no code changes. If both accelerometers are mounted to the DUT, then you need to use an example (such as SVXMPL_Baseband FRF (DAQmx AI and AO).vi) that can readily support frequency response measurements with multiple responses, or you could run the swept sine example twice - once to measure the FRF1 (accelerometer1/acquired stimulus) and once again to measure FRF2 (accelerometer2/acquired stimulus).

If you can attach a diagram of the measurement system (especially to indicate whether both accelerometers are used to measure acceleration response or whether one accelerometer is used to measure the excitation acceleration applied to the DUT), we can help you to use the Sound and Vibration examples. Are you using the current version of the Sound and Vibration Toolkit (5.0)?

[firaol]

Thank you so much for your help.

One accelerometer is connected to the shaker table while the other one is connected to the top of the specimen. I have attached that test setup  diagram.

MY problem is then how to use example given in Sound vibration toolkit, I am a new user of labview. When I tried to run the test I get error that says''Error200170- the physical channel doesn't exist in the device."

I configured  the Ao exitation channel  to be channel AOo of NI 9263. However I don't know how I can configure  my AI response channel  to be channels  from NI 9233 device that measures the acceleration. I think that is my problem. Can you please help me use the example given?

 I am using labview 8.2 and  the latest Sound and Vibration toolkit.

Firaol

[firaol]

I am using Sound Vibrarion toolkit 4.0. and labview 8.2

[dsb@NI]

Swept Sine was improved in SVT 5.0 to add support for AI and AO subsystems on separate modules. We can work on upgrading your Swept Sine VIs to allow for AO on the 9263 and AI on the 9233. Before we do that, please review the datasheet for SVT 5.0 (which you can get to from www.ni.com/soundandvibration). I don't want to burden your time upgrading 4.0 VIs if an upgrade to SVT 5.0 is imminent.

[firaol]

Thank you once again. Can you please upgrade it and attach the VI? 

[dsb@NI]

Please send me an email at doug.bendele@ni.com, so I can send you the changed VIs.