The following bugs are in release 3.1.8 of vna/J.

  • In the data analysis dialog you can open two Smith-charts. When you move the cursor in one Smith-chart and then switch the focus to the other Smith-chart, the cursor is moved back to the starting frequency in both charts.s
  • Auto-scale checkbox is not stored to and restored from a preset file
  • There may be something wrong with the GD scale - has to be verified

"I spend a lot of time tuning filters so that the GD measurement option in V3.1.4 has been quite valuable - prior to this I had to export to Excel and calculate therein. I had updated the GUI to V3.1.5 about a month ago and found that the GD scaling has become unusable with the plot producing negative values and the auto/manual scaling just ramping to some impossible limit which you cannot alter to usable values. I reverted to V3.1.4 so as to enable the correct and very useable scaling.

Can you please confirm these last 2 updates have the observed GD error and perhaps enable a fix - I use XP Pro although I don't believe that this has anything to do with it.

Additionally, is there any reason why the GD function is not enabled on reflection (S11) data? You've probably no apparent reason for doing this (I suspect that a variation of this is used for cable length testing) but in fact it is a very useful parameter in passive filter work. Could this be enabled as it is the same calculation a the transmission (S21) data just a different data set?
"

These bugs will be fixed in the near future.

Here is wish-/feature -list for the upcoming version of vna/J:

  • Measuring the transfer impedance
  • Settings are saved at program termination and reloaded at start-up (selected scales, scan-range, ...)
  • S-parameter - Beside the regular db/angle format mag/angle is supported
  • TDR analysis
  • Cursor-frequency can be entered in the marker frequency field
  • When manually changing the frequency span, the marker frequencies should be retained if possible
  • Markers on the exported images can also print as vertical lines
  • Check on each window displayed, that it is in the visible area a screen (multi-screen problems)
  • Reflection group-delay requirement (S11, gd)
  • The selected frequency should be retained even when the Smith-Chart window looses focus
  • Identical file format (PNG) for all graphic exports
  • Colors for graphic export should be customizable
  • Table data in the cable lass dialog can be exported into XLS- or simple text format
  • Calculated values in the cable length dialog can be copied to the clipboard

The new version 3.1.7 of vna/J is released.

The application JAR can be downloaded from here as usual. The following updates are included in this version:

  • Bug fixed in preset loading
  • Group delay scale bugs fixed
  • Graphic export now also works for group delay data
  • Port extension now also works with negative lengths

 

Toshiyuki (JP1PZE) has again provided translations of vna/ manuals into Japanese.

The updated user guide can be found here and the new miniVNAtiny driver guide can be found here.

Or simply use the Documents menu to find all manuals.

 

The new version 3.1.6 of vna/J is released.

The application JAR can be downloaded from here as usual. The following updates are included in this version:

  • Erik, SM3HEW has again updated the Swedish translation
  • Tony, F4GTG has finished the French translation
  • Toshiyuki, JP1PZE has translated vna/J into Japanese
  • Fixed marker data in diagram export

 

The new version 3.1.5 of vna/J is released.

The application JAR can be downloaded from here as usual. The following updates are included in this version:

  • Erik, SM3HEW has updated the Swedish translation - thanks again for his dedication to the community
  • Tony, F4GTG has done the first translation to French - thanks for your work!
  • Bug fixed in calibration for miniVNA and miniVNApro
  • Bug in frequency calibration for miniVNAtiny corrected

 


You can buy the author a beer to support the further development of vna/J.

Please use this PayPal link.

Many thanks in advance for this donation!


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2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.

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