amplitude of waveform chart

[Bildavid]

Hi Guys,

could you please tell me how to control the amplitude of a waveform chart . I want the amplitude to be in mV and i want to control the scale of numbers too .

Thank you

Bill David

[johnsold · Accepted solution]

Bill David,

Do you want to set it manually while developing the program or programmatically while running?

For manual start by turning off Autoscaling on the Y axis. Then just set the upper and lower endpoints to the values you want.

Programatically is similar except that you use Property Nodes.  Some of the properties have names which might be a bit confusing so you may need to do some exploration and trial.  Context Help and Detailed Help will be your friends.

Lynn

[Bildavid]

Dear johnsold

Thank you for the very fast reply . you answered my question .

Now i have another problem . I am seeing a signal on the waveform chart that is getting updated with time . but due to some options which i dont know,  the signal I am seeing  subsides at the left of the waveform chart . I want it to show me the signal but still giving me new results .

 I hope I made the idea clear .:)

Thanks alot 🙂

Bill David

[johnsold]

Bill David,

Not completely clear.  I am guessing that what you may be asking about is the way the time axis expands as the chart fills.

When the chart starts only a few points are shown. As more points are added the time axis changes to show all the points, up to the maximum number contained in the chart history buffer. I rarely use charts, so I am not sure of the details, but I think you can do something similar to the Y-axis. Turn off autoscaling and set it to show the entire chart history length. Again, some experimentation may be required.

Lynn