TDMS file size setting

[Jae1965]

Hi,

I have been programming temperature profile monitoring system. This application should run at least 40 days without stopping, so size of the measurement data file may be 50 mega bytes at least. During the programming, I noticed that performance of my application getting slower as the size of data file became over 6 mb. Would you please give me an comment why it happen and possible solution?

Here are more details,

1.       Choose write to measurement file vi has been chosen.

2.       File format-has to be .tdms.

Please see attached file for your better understanding.

 

Regards,

 

[Stephen_S.]

Hi Jae1965,

You are using Express VIs, which are nice because they are very easy to use, but are not the best choice for more in-depth applications such as the large and long data acquisition that you are doing. Instead, you will want to use the TDMS VIs, and for examples of how to use these, go to Help>>Find Examples...>>Fundamentals>>File Input and Output. Take a look at Write TDMS File.vi for a basic example, and if you are also using DAQmx to acquire data, take a look at something like Cont Acq&Graph Voltage.vi.

Regards,

Stephen S.