Problem with Waveform Chart updating

[yasmain62]

Hi!

I have written a LabVIEW project for 8510.
I have a problem with the waveform chart not updating the data incoming to it.

that is, Y axis does not update according to 8510 display format.

May you help me?

[RavensFan]

You need to attach more than that.  The .lvproj is only a top-level file that describes the VI's that make up the project.  It is not the VI's themselves.

[yasmain62]

sorry

I atached agaim all VI.

[yasmain62]

sorry

[yasmain62]

I atached agaim all VI.

[moderator1983]

I can't see any waveform chart in the VI that your shared...!!!

Anyways, if your waveform chart gonna be attached to "Trace Array Output 2" indicator (of the VI that you shared), then in that case you may also need to tell, whether you're getting desired output in this indicator or not...??
If not, then share the string resulted from "VISA Read".

[yasmain62]

my waveform at trace array output 2 is the same as 8510 network display, but Y and X axis are not frequency (in Hz unit) and power level ( in dB unit). that is, Y axis is the range of -100 dB to 0dB in real ( in 8510 network display) but Y axis at this output is the range of 0.00001 to 1.

why??

[RavensFan]

It seems to me that you need to convert the numbers from .00000001 to 1 into the dB equivalents using ratios and the log function.

[moderator1983]

Try this:

http://zone.ni.com/reference/en-XX/help/371361J-01/lvanls/spectrum_unit_conversion/

If you don't want to use inbuilt VI, and want to make your own comversion logic... You may want to refer:

http://www.rapidtables.com/convert/power/dBm_to_Watt.htm

[yasmain62]

Hi

I Try this:

http://zone.ni.com/reference/en-XX/help/371361J-01/lvanls/spectrum_unit_conversion/

Apparently, The vertical axis scale in my wavegraph is corrected, but the horizontal axis is Time or Point (samples), How do I change it to frequency?

thanks

[yasmain62]

Hi

I Try this:

http://zone.ni.com/reference/en-XX/help/371361J-01/lvanls/spectrum_unit_conversion/

Apparently, The vertical axis scale in my wavegraph is corrected, but the horizontal axis is Time or Point (samples), How do I change it to frequency?

thanks

[moderator1983]

Hi,

Do you want to change the label???

1. Just right clicl your graph

2. in the properties window go to 'Scales' tab

3. select the Axis, and change the name.

Is this the solution regarding your issue....

Or

do you want to change the domain from Time or Frequency...??

[yasmain62]

I want to change domain from time to frequency