USB 6008 + waveform chart with time in miliseconds on X axis

[gomya]

I am interested in plotting a graph of pressure in bars Vs time in milliseconds. I will be giving one analog signal ( pressure ) and 5 - 6 digital signals ( also connected to analog i /p terminal of  USB DAQ 6008 and the exe ( developed using labview ) should be able to plot it accordingly. From this plot , I should be able to conclude a few things like the time duration in milliseconds for which any particular digital signal was ON or the actuation pressure reached in particular time etc.

Thus i used a waveform chart , read data from USB 6008 and was able to plot it on waveform chart. But I am not able to change the X axis scale to miliseconds ( which is my main requirement ) and i am not interested in using absolute time like 10:21:30 etc..

Please advise

thanks in advance ,

gautam

[Craig_D]

Gautam,

One way you could do this is to convert from dynamic data type to strip away timing and then use the chart's property node for the x scale multiplier as a function of the acquisition rate to display the scale in milliseconds as shown here.

Regards,

Craig D

Applications Engineer

National Instruments

Message Edited by Craig D on 07-18-2007 06:51 AM

Message Edited by Craig D on 07-18-2007 06:51 AM

Message Edited by Craig D on 07-18-2007 06:52 AM

Message Edited by Craig D on 07-18-2007 06:53 AM

[gomya]

Dear Mr. Craig ,

I have yet to thank you for your reply. I was out of town for quite some time where I could not see my mails.

I did return just a day ago!!

I will try the method you suggested soon and will write back to you.

best regards ,

gautam

[smk4357]

I am trying to run the video you posted, I could not.

I am having problem using USB 6008 to plot the weveform chart with the x axis scale in miliseconds. I hope your video would help me.  Could you please post it again? Thank you.