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Pocket-Sized 6 GHz 1 TS/s ET Scope
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joeqsmith:
From the manual:

--- Quote ---When vector trace mode is disabled, the full distribution of the measured signal is displayed with
intensity grading.

--- End quote ---
While you have described how to calculate the voltage for a given time, you do not explain how this full distribution is derived.   Can you provide more details?  Are you still working with the same set of data from the R command?  If so, do you still toss out the same outliers? 


--- Quote ---... if the signal is single-valued at each point in time.
--- End quote ---
   
I assume that this full distribution is needed to see the multiple points in time. 


--- Quote ---When vector trace mode is enabled, the channel is drawn with one continuous line that follows
the average of the measured sample distribution. The standard deviation will be shown as a band
around the trace, indicating of the noise level.
--- End quote ---
I assume this standard deviation is also looking at the same full distribution.   
SJL-Instruments:

--- Quote from: joeqsmith on February 25, 2024, 04:32:54 pm ---From the manual:

--- Quote ---When vector trace mode is disabled, the full distribution of the measured signal is displayed with
intensity grading.

--- End quote ---
While you have described how to calculate the voltage for a given time, you do not explain how this full distribution is derived.   Can you provide more details?  Are you still working with the same set of data from the R command?  If so, do you still toss out the same outliers? 

--- End quote ---
The full probability density function (PDF) is obtained by numerically differentiating the CDF data from the R command. You can implement this with a finite difference. Nothing is tossed out.


--- Quote from: joeqsmith on February 25, 2024, 04:32:54 pm ---
--- Quote ---... if the signal is single-valued at each point in time.
--- End quote ---
   
I assume that this full distribution is needed to see the multiple points in time. 


--- Quote ---When vector trace mode is enabled, the channel is drawn with one continuous line that follows
the average of the measured sample distribution. The standard deviation will be shown as a band
around the trace, indicating of the noise level.
--- End quote ---
I assume this standard deviation is also looking at the same full distribution.   

--- End quote ---
Yes, the full distribution is required for multivalued signals such as eye diagrams.
The standard deviation can be calculated from the PDF. The software calculates it directly from the CDF for numerical efficiency (integration by parts), but it gives equivalent results.
joeqsmith:

--- Quote ---... we'll see if it's possible to reliably detect when the signal is single-valued.
--- End quote ---

Based on your last response, your previous post makes more sense.  So, you assume if the vectors are turned off that the user is looking at multi-value points and hence, turn off the math calculations.  It's not that you can't calculate them assuming it is single value points, you just don't, at least for now.   

Much more clear to me now.  Thanks.
SJL-Instruments:

--- Quote from: joeqsmith on February 24, 2024, 06:10:19 pm ---For example basic horizontal would be frequency, period, rise/fall, width, duty cycle ...  Trends would be min,max, p-p, avg, std-dev...   (histograms would also be nice) See attached for example.   Adding basic measurements is a pain.  Having the ability to save the settings has been very useful but not a work around.     

--- End quote ---
We have just released v2.5.11 of the software which contains these features. Histograms are scheduled for next update, but for now the measurement history can be exported as a CSV.

Changelog (https://www.sjl-instruments.com/software/):
- Allow measurements to be edited
- Track measurement statistics (min/max/avg/pp/stdev/etc.)
- Export measurement data
- Add pulse width measurements
- Quick add all standard horizontal/vertical measurements for a channel
- Quick remove all measurements for a channel
- Automatic reconnect if scope is unplugged
- Color picker for min/max
- Bugfix: Brightness slider does not respond smoothly at low update rate
- Bugfix: Attenuation does not update when acquisition stopped
- Bugfix: Measurements loaded improperly from settings file when measurements exist
joeqsmith:
Looks like the actual changelog was not updated.   

Nice job with the new release. 
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