Hi, I'm trying to create a program which can read and continuously display two channels ( force and acceleration).I'm using a DAQ card NI PXI-4472B.Please take a look at the attached file. ( It's made in Labview 8.5.1). The problem which occurs is the following:If I connect my laptop to the NI DAQ equipment and I run the program, both of the graphs do not continuously show the acquired data. Every 6 seconds they update and show a plot with the data acquired in those 6 seconds. Now I would like that from the moment the trigger level is reached, both of the graphs start displaying the data in continuously. ( So whenever a force or acceleration is measured it has to be displayed on the Force-graph). All of the acquired data has to remain in the graphic for about 10-15 seconds. After those 15 seconds the program should automatically stop. Any hints of tips how I can do this? Btw, did I set the right properties for the DAQmx trigger? 'Force' is connected to ai0, 'Acceleration' to ai1 Thanks! Dries

The reason you get an update every 6 seconds is that the way you have programmed it. You have a sample rate of 10000 samples per seconds and then request 60000 samples. Basic arithmetic says 60000 Samples/10000 Samples/sec equals 6 seconds. So, decide how fast you really want the display to update and set the number of samples based on that. You are also using a graph incorrectly if you want the previous samples to remain on the screen. The graph discards old data with every write to it. You want to use a chart and you will need to set the history (right click option) to the number of samples you will be taking. If you want the acquisition to automatically stop, you can use the Elapsed Time function.

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Continuously 2chan daqmx display

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Yeah, I tried using a constant ( Dev1/ai0 ) as source, but that didn't work.

If I use a control as source, it does not display the available channels in the list.

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Continuously 2chan daqmx display

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