TDMS File Write-High Sampling Rate.

[ANBARASAN]

Hi, 

    I am Acquiring data at 31 Mhz from PICO 2208B. Total Ram taken during acquisition is 900 MB. When I write the acquired data to TDMS file ram shoots up to 2000MB and throws error"Not enough memory to perform this operation".

How can rectify this issue.

[GerdW]

Hi Anbarasan,

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@ANBARASAN wrote:

I am Acquiring data at 31 Mhz from PICO 2208B. Total Ram taken during acquisition is 900 MB. When I write the acquired data to TDMS file ram shoots up to 2000MB and throws error"Not enough memory to perform this operation". How can rectify this issue.

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Don't collect this huge amount of data in RAM, but write instantly to a file (located on a fast SSD)…

[ANBARASAN]

Hi GerdW,

               Thanks for your reply. I am writing every 100 ms data to tdms file. I am Using SSD Hard disk.I could understand the word "instantaneously writing to file".Can you explain me.

[GerdW]

Hi Anbarasan,

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@ANBARASAN wrote:

I could understand the word "instantaneously writing to file".Can you explain me.

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I guess you don't understand what I meant with "instantaneously": instead of collecting data in an array you should write the data immediatly to a (TDMS) file. (Maybe it could help to use a producer-consumer pattern when your PICOscope reads the signal at 31MHz samplerate.)

You still haven't provided any code…