Please help the Newbie

[GTOzoom16]

This may sound dumb to all you pro's out there 😜
but I am new to Labview and need help creating a small application.

what I need is a simple application(as simple as possible) that outputs a certain voltage over time.(through DAQmx(analog output)) like in the picture in the attachment

Thanks for all your help

-sorry if this is too much to ask

[mikeporter]

Check out the examples that ship with LV. Search for anakog output and you will find several that will either do what you need or will with a bit of tweaking.

Mike...

[Ryan_V[DE]]

GTOzoom16,

    Mike is right, we have some great examples out there. To find them in LabVIEW, go to Help -> Find Examples. In the tree under the Browse tab, go to Hardware Input and Output -> DAQmx -> Analog Generation -> Voltage. Two examples that sound like they would help you are "Gen Mult Volt Updates-SW Timed.vi" and "Gen Voltage Update.vi."

Hope this helps,
Ryan V.
National Instruments

[GTOzoom16]

thanks for all your help, but It looks like everything in the examples section just generates sine waves. What I was hoping to get was just linear progression over a given period of time.

thanks again

[Will.D]

Try using the "Simulate Arbitrary Signal" express vi.  You can specify points (x,y coords) with which it will generate a function.

[tbob]

Here is a simple vi to build a ramp signal.  Put your code to write to the DAQ inside this loop and use the value of the top shift register as the DAQ input.  You should initialize the DAQ before the loop, write to the DAQ inside the loop, and close the DAQ after the loop.  If your DAQ is the kind that you must write an entire buffer of data (like a 1D array), then call the Start DAQ function, then you can use build array to build an array of data inside the loop (or use enable indexing on the loop output tunnel), and send the array to the DAQ (write DAQ, then start DAQ) after the loop.

[GTOzoom16]

tBob,



That was Exactly what I was looking for!



thanks alot

Message Edited by GTOzoom16 on 08-11-2005 07:59 AM