analog output NI-6009

[mgiraldez]

Hi,

I would like to generate an analog signal that goes from 0 to 3.5 volts and then reset using the DAQ NI-6009.

I can do it manually using a DBL (I put a number and NI-6009 send this signal), but I would need that my script wolud do it automatically because I use this signal  to feed a MOSFET(operates as a load variable). How can I do?

Thanks in advance

[MikeS81]

Hi mgiraldez,

can you show what you have done so far? Where do you have problems?

Mike

[Mohammed.Ashraf]

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I can do it manually using a DBL (I put a number and NI-6009 send this signal),

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u mean in the Measurement and automation Explorer or in the DAQ Assistant

would you please make things more clear in order to know at which point you are stuck into ?

Regards...

[mgiraldez]

I want that in the output of my DAQ appears the same that "Referencia", but nowadays I can only send it manually, like in the script, and I must send it automatically.

I must send a signal that changes between 0-3.5 V automatically, not manually.

Thanks in advance

PS: There are some things that I put in the program and I don´t use, like the signal generator, because I don't know the way to create that signal (0-3.5V)

[MikeS81]

Hi mgiraldez,

how do you need it? You can use a wait inside the loop, to set when you want to change the value and you can use an array for different output values.

Mike

[mgiraldez]

Thanks Mike,

I need to click the Run button and then obtain that signal in the output.

The equation Mosfet that is
y = -1,8212x3 + 19,325x2 - 65,771x + 72,037

So, "x" could be my Output.Can I use a MathScript to generate that signal or i can't use it?

I don't understand the use of the array, You mean using 35 values of 0.1 V for example? How can I put this 35 values one after another?

Best Regards

[Coq_Rouge]

NI has a tool called "NI analog waveform editor" Since you are a beginner you may find the tool useful. It cost money. But you can download a 30 days trail here https://lumen.ni.com/nicif/us/evalanlwavedtr/content.xhtml. But remember this is just a tool for making the waveform as consecutive numbers. You still have to do some programming

[MikeS81]

Hi mgiraldez,

see the attached image please. It shows two solutions, but there are a lot more.

Hope it helps.

Mike

[mgiraldez]

Thanks Mike and Coq,

I though a lot of ways but seems that the MathScript is the best way to create it. But I have the last problem, how can i reset the signal when it reachs 3.5V? I though in a boolean, but i don't know if this is the best way.

Thanks 

[Coq_Rouge]

I think your problem is that you need some basic Labview skills. We have all been beginners sometime so that is OK. You will find some links here http://wiki.lavag.org/LabVIEW_tutorial for Labview tutorials