How to write multiple entries with KHz sampling frequency in a file outside the loop?

Hello

I am able several entries of string tension using the wizard DAQ (1 sample on request) and it is placed inside a timed loop of frequency 1 KHz.

This timed loop is placed inside an another while loop.

Problem is with writing data to a file, although I can see 100 samples of 100 ms in the graphics cable to the out of the way, but the extent of writing to output file stores either only from 19 to 20 samples per second (when he wrote inside the timed loop) or does not store any (if placed outside the timed inner loop).

I tried to set up producer consumer structure but in the loop of the consumer, I can't write the data in queue to a file saying data type mismatch. I placed the loop starting queue item and consumer out both loops and the element of queue inside the timed loop exit DAQ fed to the queue item.

Can you please help me solve this problem file writing?

I haven't looked so writing code from the top of the head, but access to the files is slow, and if you open and close the file, it is quite slow. What do you usually do it write to the file at a slower pace, for example once per second and write all the 1 k samples at a time. Try and also keep Ref file open during the test.

/Y

Tags: NI Software

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