Programming questions?

Hi again you guys.

as I said earlier, I'm new to LV and my English is not the best...

I'm building a VI to acquire analog signals of 4 pressure transducers... I have

I need the data acquired on an Excel (table) and the table of waveform on a data sheet file...

The data exported to excel file must be 2 values every second, and I get something like... 700 samples per second... what turns my file very large excel... and 1 time for each channel column, I just need 1 column of time on all channels...

Another question: the values for the x-axis (the value 0 to 300 seconds) when I run the program it into something else that I have Don t really know what is...

To the end, I Don t know how to automatically export a datasheet file waveform graph in elapsed time (this happens with excel export)...

Can anyone, please, teach or show me how to solve this problems?

Sorry for my bad English...

Best regards

You need to adjust the sample rate on the data acquisition phase.  Double-click the assistant DAQ, down to the lower right box and enter a different number in the speed box (Hz).  You are currently 1 k = 1000 samples/s.  If you need only 2 samples per second, change that to two.  You can also phone in number 2 for the entry called 'rate' on the DAQ assistant.

If I were you, I would use the VI of file extent write instead of exporting data to Excel.  He will write a file with a *.lvm extension.  But if you double-click on the file and say open with Excel, Excel can read very well.  You can find this feature under Meas Express-output-write file.   Place one of them on a block diagram, and then read the help about it.

Craig

Tags: NI Software

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