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Turning ON the statistics in DSOX3034A using commands.....

Question asked by malli_1729 on Sep 26, 2014
Latest reply on Nov 10, 2014 by malli_1729

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Hi,

We are doing noise measurement of power rails using DSOX3024A.

Process is :
Connect the rail's voltage to Scope.
Change the offset and vertical divisions to display waveform in Top 3 Divisions (approx)
Apply FFT
Put the statistics measurements ON wait for at least count to 1000
Then take the snapshot.

This we are trying to do using Remote Control using USB.

I can able to display the voltage rail in TOP 3 Divisions.
I can't able to Turn ON the Statistics measurements using commands.

Lines used for displaying the statistics(Note : dsoObj -> is the DSOX3034A Object returned by ResourceManager.get_instrument())
    dsoObj.write("MEASure:STATistics:DISPlay ON");
    dsoObj.write('MEASure:STATistics:RESEt')

I have Statistics Display on Screen   which doesn't got answer for this.

No one else has this question

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9 Replies

skaufma Sep 26, 2014 2:31 PM
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":MEAS:STAT:DISP 1" worked on my system to display the measurement menu on the screen. or you can try (using python):

dsoObj.write("MEAS:STAT:MCO 1000")
dsoObj.write("MEAS:STAT MCO")
count = float(dsoObj.ask("MEAS:RES?"))

while (count<1000):
count = float(dsoObj.ask("MEAS:RES?")

dsoObj.write("MEAS:STAT ON") # sets the RES? query to return all stats, or change this to whatever you want to measure.
data = dsoObj.ask("MEAS:RES?") # then you have a measurement string, comma separated.
data = data.split(',') #creates a list of meas type, min, max, mean, stdev, and ct
dsoObj.write("MEAS:STAT:RES") #resets the stats, counts = 0.
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- malli_1729 @ skaufma on Sep 29, 2014 12:12 AM
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  Hi,
  
  I think
  
  dsoObj.write('MEAS:STAT:DISP ON') and dsoObj.write('MEAS:STAT:DISP 1') are same.
  
  Both are not displaying the statistics.
  
  If i press Measure Button manually then only statistics display comes.
  
  Or As explained in the thread link i shared, if we are already in the measurement window and we have run the script then it is diaplaying.
  
  If we do Default Setup, then run the Script , then measurement statistics are not displayed....
  
  I have already enabled required measures
      dsoObj.write("MEASure:SOURce CHANnel1")
      dsoObj.write("MEASure:CLEar")
  
      dsoObj.write("MEASure:VPP CHANnel1")
      dsoObj.write("MEASure:VMAX CHANnel1")
      dsoObj.write("MEASure:VAVerage CYCLe,CHANnel1")
      dsoObj.write("MEASure:FREQuency CHANnel1")
  
  Edited by: malli_1729 on Sep 29, 2014 1:10 AM
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  - infinite.persistence @ malli_1729 on Sep 30, 2014 6:32 PM
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    Statistics are only displayed on screen when you are in the "Measurement Menu" or "Measurement Statistics Menu".
    
    Add *":SYSTEM:MENU MEASURE"* into your script to remotely navigate to the measurement menu, then you can take your screenshot.
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    - malli_1729 @ infinite.persistence on Oct 7, 2014 6:49 AM
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      Using command
      "dsoObj.write('SYSTem:MENU MEASURE');'
      
      i can able to go into M
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      - malli_1729 @ malli_1729 on Oct 19, 2014 11:22 PM
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        Few things i didn't get....
        
        I can't able to see this message completely, is every body has same experience...
        
        Any help will be helpful.....
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        infinite.persistence @ malli_1729 on Oct 21, 2014 3:45 AM
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        Which message do you mean?
        
        And yeah, your last messages seems to be truncated.
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        malli_1729 @ infinite.persistence on Oct 27, 2014 4:06 AM
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        Hi,
        
        I have solved other issues, like displaying statistics.
        
        I am waiting statistics count to reach above 500, then taking snapshot.
        I am facing issues in taking snapshot.
        
            # SAVE:PWD only goes to directly which is existing. it can't create
            # a directory
            dsoObj.write('SAVE:PWD "\usb\KATMAI"')
            dsoObj.write('SAVE:IMAGe:FACTors 1')
            dsoObj.write('SAVE:IMAGe:FORMat BMP24bit')
            #dsoObj.write('SAVE:IMAGe:INKSaver 1')
            dsoObj.write('SAVE:IMAGe:PALette COLor')
            #dsoObj.write('SAVE:IMAGe:PALette COLor')
            #dsoObj.write('SAVE:FILEname "sep07_test"')
            dsoObj.write('SAVE:IMAGe "sep08_test"')
        
        Here "dsoObj.write('SAVE:PWD "\usb\KATMAI"')" this command can't able to change the directory to KATMAI, it is saving the image in the base directory i.e usb\ itself.
        
        *Anything missing for this command to save image in usb\KATMAI directoty*
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        malli_1729 @ malli_1729 on Nov 10, 2014 12:25 AM
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        Any help??
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bret Sep 27, 2014 6:50 AM
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One thing to note is that "MEAS:STAT:DISP 1" enables measurement statistics, but there has to be a measurement installed in the first place. Something like:

:MEAS:FREQ CHAN1
:MEAS:STAT:DISP 1

If there are no measurements installed, MEAS:STAT:DISP has nothing to display.
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Turning ON the statistics in DSOX3034A using commands.....

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