Send for excellent items to DAQ to 10 kHz

Hi all

I am very new to LV and would like to help with my application.  I enclose a copy of my current VI and a sample data file.

What I do seems simple enough for me but I had a few problems with the implementation.  Basically, I have a worksheet and I need the values in this file on my output data acquisition card, so I can use the 'signal' on some external hardware.  My blood must be 10 kHz, which I know can be accomplished using a timed loop and my 6036 E series DAQ (pcmcia) clk signal.  The main problem I have had is how to get each item in the spreadsheet to appear "outside the loop" so the acquisition of data can be accessed. If the acquisition of data is inside the loop, then he gets during each iteration and turns far too slow.

Any input will help, thanks in advance and I would like to know if there is anything else I can provide.

-Joe

You do not use any type of operation of loop to set the synchronization of data acquisition. You pass the table in its entirety to the DAQ Assistant and you configure the DAQ Assistant for a sampling frequency. When you place a single point at a time to a DAQ hardware, using on-demand synchronization and you would be very difficult to get the sample rate you want. The time between samples would also be very variable due to the synchronization of windows non-determinisme.

You do not use the Index Array function for each element of the array. The only way to stop the loop is to click on the button abandon, you weren't getting anything out of the loop. Even if you had configured the loop to complete accorinding to the size of the array, you will only get the last element. Using the Index Array function on the 2D Board, you will get a line or entire column.

Tags: NI Hardware

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