On Wed, Sep 4, 2019 at 08:58 PM, Rune Broberg wrote:
The newly published 0.0.5 now allows saving/loading calibrations; and
2-port 1-path calibration as well. It still assumes perfect standards -
I'll work on those further in future releases. It has a slightly different
layout to allow more information from markers, and a mouse-controlled
marker as well (only controllable on the logmag displays though).
I look forward to hearing your feedback.
--
Rune / 5Q5R
Just tried .05, and it worked for excellent for me. Tried a calibration with 10 sweeps and the mouse marker.
One thing I noticed is that the calibration slot in the NanoVNA is still used when taking the calibration sweeps with your software. In my case this was really noticeable because I calibrated a small bandwidth before, and this was clearly visible when doing the load calibration sweep. I tried to "reset" the calibration on the NanoVNA and in your software, but this had no effect, the dip in the load sweep remained where it was calibrated before. I am unsure if this can have a negative effect on the accuracy of the calibration in your software. When I swept a load afterwards, I could not see any immediate negative effect.
One suggestion for improvement of your app could be averaging to reduce noise (by repeating the same frequency sweep a definable number of times and averaging each point of the different sweeps)
