Problem with waveform chart

[akbar1167]

Hello friends.

I'm in learning lab view and have some questions.

I get a signal with an Analog to Digital converter (an Atmega 32) and send data to com port .

I convert my data to real value in voltage and time .

But i have problem with show wave form in different frequency .

By Increase of frequency , waveform chart can not draw my data Clearly.

What i do to show data in different frequency ?

Thanks .

[Tushar_Jambhekar]

in your code www.hlcgroup.ir.vi is missing can you post that vi as well

[akbar1167]

Hello .

thanks for your notice.

I get my cod from Here. and Here

this block need to hardware for give output . (a DAQ V2.0)

like this picture :

If you don't have a A/D hardware please only tell me how I can do my test ?

I want to create a simple oscilloscope.(for low frequency).

[Ben]

Interfacing with hardware is seldom easy. That is why I lean toward NI stuff since they have made there stuff resonably simple and they have good supprt.

When interfacing with hardware from others, we have to look fo rthe manufacuer of the hardware to provide enough support to get started.

So I suggest you contact whoever makes your device and get some examples from them.

Hopefully they have heard of LV and have drivers.

Otherwise, ther is no guarentee it will be possible.

If English is not your primary language, plese feel free to post in both English and your native language. We have contributors that can handle most languages so do not let English get in the way.

Ben

[akbar1167]

thank's ben .

this is my problem ....

i need to x axis scaling .

[Joseph_Loo]

I suggest you change the scale factor on the chart or graph or in your VI.

[akbar1167]

How i change the scale factor on the graph ?

i don't work with property node.

help me.

[Joseph_Loo]

Right click on the graph and select property. Select Scales. Select Time (X-Axis). You can set the multiplier value to whatever you want.

Since you are using graphs, the plot will always look like that because of your limited area you are plotting with. You will need to enable the scaling portion (see visible items on the graphj).

Personally, for your application I would use chart instead.

[akbar1167]

this is my output by waveform chart ...

and this is property node of x scale of wave form chart ...

which section i have select ?

[Joseph_Loo]

You want the x-scal multiplier.

Is your chart in seconds or points? If it is in points, you do not have enough refinement on your sampel. Are you sure that you are using a chart form or a graph? They do work different.