continuos adquisition

[Martincho]

hello.I knew Labview a week ago.
I want to make a continuos acquisition.I just want to store waveforms when it
excedd a limit(peak, RMS,etc).The problem is i can't find the way of store previus and post data.
My code analyzes data over only one buffer.Whata I'm looking for  is  like a  software  trigger
for store data with pretrigger and postrigger.
I need some idea.Sorry for my English.Thank you.

[tst]

Search the help and example finder (Help>>Find Examples) for shift registers. This should explain how to do this.

To learn more, I suggest you read the LabVIEW user manual. Also, try searching this site and google for LabVIEW tutorials. Here and here are a couple you can start with. You can also contact your local NI office and join one of their courses.
In addition, I suggest you read the LabVIEW style guide.

[Martincho]

thanks tst

Message Edited by Martincho on 07-27-2005 07:46 AM

[Chris_R.]

Hi Martincho,

What tst has told you is the best option for starting out (Thanks tst!).  You may also want to look at the DAQmx examples for different types of data acquisition also located in LabVIEW under "Help>>Find Examples..."  Once in an examples, you can select the File menu and select VI Properties.  In the "Category" pull down menu, select "Documentation."  This will tell you exactly what the VI does and usually includes directions on how to configure the example to work with your hardware.  The tutorials are a great way to start with the basics of LabVIEW and the courses we offer are a great way to learn LabVIEW for future application development.  If you have any questions, just let us know!  Best of luck to you!

Chris R.
Applications Engineer
National Instruments