2 graphs in a single waveform and different signals

[jinio]

hi everyone,

I am working on a load cell device and interfacing the with PC with Labview. I want to plot input and output waveform on the same graph. SO that I can compare the phase difference between them. I also want to use different signals like sine, square, trianngle as my input signal to see the system response with different signals. How can I do that? pls reply urgently..

jinal......

[Craig_D]

Jinal,

This would really depend on the frequency of the signals that you input/output and the DAQ device you are using.  Usually, you would read your output back into an input channel, but, of course, there will be some degree of latency between your output and input from your external circuit and from the fact that the signals will be multiplexed in (unless you have a simultaneously sampled board).

I would check out example finder for the synchronization examples in Hardware Input Output -> DAQmx -> Synchronization -> Multi-Function as a starting point.

Regards,

Craig D
Applications Engineer
National Instruments