Laser Doppler Vibrometer Voltage & Conversion into Velocity.

[RahulP_cmu]

1.CSV/TXT Excitation Signal, Import waveform from file, 100 kHz sampling rate, Sine burst / Ricker / X-Hannes / Gaussian signals  
 2 LabVIEW Requirement: - Read transducer Signal CSV/TXT, write LDV response CSV/TXT  

3 LDV Measurement:  
- Voltage output proportional to velocity  
- Conversion using the sensitivity factor  
Formula: Velocity = Voltage / Sensitivity 

4. NI DAQ Requirements 

- Synchronous AO and AI acquisition  
- Hardware timed sampling  
- Minimum 100 kHz sampling rate  
- Trigger-based acquisition 

5.Data Logging (CSV export) 

6. Data Format (Transducer & LDV result extraction format) 

Time_s, Transducer_Source_Signal, Excitation_V, LDV_Voltage_V, LDV_Velocity_mm_s 

[Bob_Schor]

This is one of the strangest posts I've seen recently on the LabVIEW Forums, complete with unusual "formatting" (see my own examples earlier in this sentence) and a curious "listing of facts or subject matter" but no hint of a question or purpose or "help wanted".

I was able to open the code fragment, and was struck by a number of features I (at first) didn't recognize -- there were several "structures" I didn't recognize (one was called "Transducer Loop", but it clearly didn't "loop".  The "Aha" moment came when I realized it was an "anonymous" In Place Element Structure.  Makes no sense to me.  

I'm not sure what the Original Poster, RahulP_cmu, wants from us.  This reads like a "work-related Task", as opposed to a Homework Assignment.  I would suggest that the OP spend the time to learn "basic LabVIEW", including simple DAQmx tasks such as generating waveforms (D/A) and recording/plotting signals (A/D), ideally with a mentor who can illustrate good LabVIEW Style (including using sub-VIs for sub-Tasks and remembering to document VIs and sub-VIs).

Bob Schor

[RahulP_cmu]

Apologies, if my problem felt cluttered and unaligned, I am using analog output for transducer excitation of source signals my LDV is measuring the voltage from Specimen at specific locations.  I am trying to generate the CSV output file with the voltage, velocities for continuous samples. I am trying to give Ricker Pulse or X-Hannes wavelets using Signal generator, but transducer source signals are not observed in the LDV response. I am seeking help how to proceed for my problem. It would be great help if you can guide how to proceed for my case.