Please could someone explain to me some of the components on this tutorial

[funcooker]

http://cnx.org/content/m13711/latest/

http://cnx.org/content/m13711/latest/

Hi I am trying to carry out this VI curve tutorial,

http://cnx.org/content/m13711/latest/

Hi I am trying to carry out this VI curve tutorial,

I have everything set up but I am really having trouble with the Block diagram I am meant to be copying.

http://cnx.org/content/m13711/latest/

Hi I am trying to carry out this VI curve tutorial,

I have everything set up but I am really having trouble with the Block diagram I am meant to be copying.

For example, how do I know which daq assistant is the input and which the ouput and then why is there 3 and not 2?

http://cnx.org/content/m13711/latest/

Hi I am trying to carry out this VI curve tutorial,

I have everything set up but I am really having trouble with the Block diagram I am meant to be copying.

For example, how do I know which daq assistant is the input and which the ouput and then why is there 3 and not 2?

also the N in a blue box and the I in a blue box in the top left and bottom left corner, I have no idea what these are.

http://cnx.org/content/m13711/latest/

Hi I am trying to carry out this VI curve tutorial,

I have everything set up but I am really having trouble with the Block diagram I am meant to be copying.

For example, how do I know which daq assistant is the input and which the ouput and then why is there 3 and not 2?

also the N in a blue box and the I in a blue box in the top left and bottom left corner, I have no idea what these are.

Please help its really important I do this.

http://cnx.org/content/m13711/latest/

Hi I am trying to carry out this VI curve tutorial,

I have everything set up but I am really having trouble with the Block diagram I am meant to be copying.

For example, how do I know which daq assistant is the input and which the ouput and then why is there 3 and not 2?

also the N in a blue box and the I in a blue box in the top left and bottom left corner, I have no idea what these are.

[Gak]

I think you should read Labview fundamentals before trying to build this example.

Get familiar with labview functions.

[F._Schubert]

Also LabVIEW has a help. This should give you an explanation what N and I stand for.

Hint: Try Ctrl+H.

Felix

[funcooker]

Yeah but if I just put in

"n" I guess I am going to get about 10,000 results.

Couldn't someone point me in the right direction?

[smercurio_fc · Accepted solution]

You've pretty much been pointed in the right direction. The LabVIEW Help explains the for-loop, so I'm not going to bother explaining what the "N" and the "i" is for by simply regurgitating the manual, which NI engineers spent a LONG time writing for the benefit of others to learn. Hint, hint.

As for the DAQ Assistant questions:

1. How do you know which DAQ assistant is the input and which is the output? Well, the little triangles on those icons tell you that. If the little triangle is on the left, pointing into the icon then it's an input. If the little triangle points out of the icon then it's an output. Ergo...
2. Why are there 3? The last one outside the loop makes sure that the output is turned off by writing all zeros.

[ajmartin]

Badger,

Definitely follow everyone's advice and take the free tutorials on the NI web site. It will be much easier to learn that way. As far as help is concerned when looking at a VI , you should always have the "show context help" window open. It is under the "Help" tab! With this window open , move your cursor over the "N"  terminal A help Box opens,  and a "tip strip" shows also. Now select the "Detailed Help" from the box. Every thing you want to know about the "For Loop" is revealed.

Alan

[funcooker]

Hi again,

right so I have done what you all said and gone and read a book on LabView fundamentals, "introduction to data aquisition with LABVIEW by RH king"

it has answered my questions about the for loop and most of the rest, the thing I am now having trouble with is the pink lines coming from the DAQ assistant, I have tried all the options, generate signal, aquire, sine wave, digital, continuous samples, N samples but I can't get a pink line, all I can get in that location is a gray "error out", is this all it is, just connect error out to error in.

Also another thing that is confusing me is, just before the graph, that component between the last division and the graph indicator, I am having trouble identifying.

Sorry to keep badgering on about this one but I need to get this example completed for work.

[F._Schubert]

Pink wire: pink wires are general clusters. The color of the error cluster changed to the brown/green you see on your computer. The tutorial was propably written in LV7.1 where the error cluster was still pink.

The function you search is 'bundle'.

Felix