Set time at start of DAQ to 0

[MrNice]

I am using 'DAQ Assistant' (subVI) to measure some AI's I am then storing this data using 'write LVM'(subVI). I acquire for a length of time when a trigger is received, it then stores and waits for the next trigger where the process is repeated. When I look at the LVM file I see that the time axis doesn't start at 0 seconds. I think the time actually starts when I start the program running because as you look at the files sequentially the start time always gets bigger, although I am not sure as I am only using express vi's so it all quite elusive and clever and not in my control. In order for my time axis to start at 0 seconds what do I need to reset.

Nice

[MrNice]

From the lack of replys I may not be making any sense.

I have taken some anolog readings and they are in a Dynamic Data format associated with the analog values is time data I would like at the beginning of the acquisition for the time to read 0 and not some random time which I beleive is set at the start when I set the VI going

[minnellac]

It may be as simple as selecting Ignore Time Stamps when you right-click on your Waveform Graph. If that doesn't get you where you want to be, you can always convert the dynamic data type to a numeric array (Sig. Manipulation>from DDT) and do whatever you like with it at that point.

[PNHorn]

Hello,

I have had this post in my inbox for a few days and have been checking to see if you have posted further questions or if the posts from other users helped you out enough to get moving again with your project.

If you have sorted out your problems then that is great, if you are still having the problems then please feel free to post to this thread again and I will monitor the thread for your response. I can then look into this further for you. I'm still not quite clear on exactly what you are trying to do though, so maybe if you could post a piece of example code which shows the problem then I will be in a better position to advise you.

Best regards,

Peter H
Applications Engineer
National Instruments UK