Script to automate plots

[cbac...@emc-testcenter.com]

Hi Michael,

I have a Folder with 30 similar measurements. For each of them I have to make the same 5 Plots.

For example:

VSWR of port1, show S1,1 only, Y Scale from 0 to 2, X Scale from 0 to 12 GHz, Format: magnitude only, incluiding U95

VSWR of port2, show S2,2 only, Y Scale from 0 to 2, X Scale from 0 to 12 GHz, Format: magnitude only, incluiding U95

Impedance of port1, show S1,1 only, Y Scale from 30 to 80 Ohms,  X Scale from 0 to 12 GHz, Format: Mag Phase,  incluiding U95

Impedance of port2, show S2,2 only, Y Scale from 30 to 80 Ohms, X Scale from 0 to 12 GHz, Format: Mag Phase,  incluiding U95

S21, Format: Mag Phase,  in Mag log and Phase unwrap, Y Scale from 0 to -20 dB ,Freq log. X Scale from 0 to 12 GHz, Format: magnitude only, incluiding U95

If I do this by hand, it is very time consuming and also a source of errors and incosistencies. As I have to select always the same settings and also the folder to save the Image each time. So I would like to write a script where I can set all the fixed parameters for each plot and save the plot afterwards in a given path.

How can I set the conversion, format and X and Y scales in a script?

Thanks and regards

Cecile

[Michael Wollensack METAS]

Hi,

you could use graph settings (VNA Tools / Data Explorer / Setup / Open or Save Settings) and generate a gset-files for each plot.

> VSWR of port1, show S1,1 only, Y Scale from 0 to 2, X Scale from 0 to 12 GHz, Format: magnitude only, incluiding U95

So the gset-File for the above example would look like this:

<?xml version="1.0"?>

<VnaGraphSettings xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

  <NRows>1</NRows>

  <NColumns>1</NColumns>

  <Parameters>

    <VnaParameter>

      <NumRcv>b</NumRcv>

      <NumPort>1</NumPort>

      <DenRcv>a</DenRcv>

      <DenPort>1</DenPort>

      <SrcPort>1</SrcPort>

    </VnaParameter>

  </Parameters>

  <Conv>None</Conv>

  <MonteCarlo>false</MonteCarlo>

  <Format>Mag</Format>

  <AutoScaleX>false</AutoScaleX>

  <AutoScaleY>false</AutoScaleY>

  <FreqLog>false</FreqLog>

  <Magnitude>VSWR__lin</Magnitude>

  <Phase>Phase_180</Phase>

  <TimeDomainMode>Band_Pass_Impulse</TimeDomainMode>

  <TimeDomainWindow>Normal_Kaiser</TimeDomainWindow>

  <UncFormat>U95</UncFormat>

  <InteractionMode>None</InteractionMode>

  <Cursor1>false</Cursor1>

  <Cursor2>false</Cursor2>

  <NormMode>Value</NormMode>

  <XScaleMin>

    <double>0</double>

  </XScaleMin>

  <XScaleMax>

    <double>12000000000</double>

  </XScaleMax>

  <YScaleMin>

    <double>0</double>

  </YScaleMin>

  <YScaleMax>

    <double>2</double>

  </YScaleMax>

</VnaGraphSettings>

or you generate your plot using for example MATLAB and load and plot the data there.

>> d = LoadSParamDataAsStruct('Example_01.sdatb')

d = 

  struct with fields:

               Frequency: [1×667 double]

                   Ports: {'1'}

                  PortZr: [1×1 LinProp]

    FrequencyConversions: {[1×1 struct]}

                    Data: [667×1×1 LinProp]

>> plot(d.Frequency, get_value(abs(d.Data(:,1,1))))

Hope this helps.

Regards

Michael

[cbac...@emc-testcenter.com]

Hi Michael,

Thanks, in the gSet File is there a possibility to set the "Norm:" field to "Mean" when I have several curves in one plot? Unfortunately this is not saved when I hit "save Settings". I tried to write "Mean" instead of "Value" in the XML of the gSet file, but I get error when opening it.  The other way around when I have "Mean" set in the "Norm:" field and I open an gSet file where I had set "None" before it does not change back eighter. So it seems it just doesn't load any value for the "Norm:" field. Is there a way to fix it?

Thanks and Regards

Cecile

[Michael Wollensack METAS]

Hi,

at the moment in the gset-file the norm is not saved and there is no workaround. 

The reason for it is that the number of norm items changes based on the selected data.

Regards

Michael