TDMS write

[nripen]

How to write the time(in column) in fpga module.( i m using cRIO- 9025 along with NI 9219 and NI 9223 for data acquistion)

[crossrulz]

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@nripen wrote:

How to write the time(in column) in fpga module.( i m using cRIO- 9025 along with NI 9219 and NI 9223 for data acquistion)

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What do you mean "time in FPGA module".  The FPGA doesn't care about time.  Or do you mean the RT Module?  What exactly are you trying to do?

[nripen]

Actually I want to save the data(acquired using NI 9219 from a thermal sensor) in TDMS format (RT mode). I am able to save the amplitute(voltage), but i want to save the time duration for the saved data so that i can plot Amplitute Vs Time.

[crossrulz]

Your FPGA should be sampling at a steady rate.  So all you really need is the time you told the FPGA to start sampling.  Since you are saving to a TDMS, I would just set the start time and sample rate as metadata and just save the channel data as it comes in.  You can build up the time in a post processing or let a tool (like DIAdem) to it for you.

[nripen]

Respected sir

Can u pls send me a VI for this purpose. I think loop timer will do that. If i set the loop timer as 100 micro seconds, then the time between each data will be 100 micro second. pls let me know whether my approach is correct or not.