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X-axis time not showing absolute timestamp after separating waveforms using index waveform array

Hi,  

 

For a start  I am using labview 2011academic licence with NI9234 and cDAQ-9178.

I am trying to read, display and record signals from two isotronic accelerometers simultaneously for future signal analysis (FFT, etc).   I wish to display realtime waveforms vibration data at sampling rate of 10000Hz and display a final sampling waveform which takes approximately 40s.  I wish to then write these data onto a file.

The associated block diagram, vi attached.  I could display in real time each accelerometer by using loop iterations and index waveform array.  But I somehow could not display the correct time for x-axis for one of the wave graph. (print screen attached)   I could do it correctly for channel 0 but not for channel 1.  It remained at 8:00 AM.  This is despite having checked that both graph has similar x-axis settings.  I believe that I might have missed something somewhere but I could not make out of it.

 

Thank you in advance for pointing it out. 

 

Abu (Crawling)

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