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Re: NanoVNA Saver - Display Smith Cart
Doesn't Saver display it by default? Look at the button in lower left for "Display Settings..." Then, in the dialog, you can set the plot formats.. >
By Jim Lux · #30136 ·
NanoVNA Saver - Display Smith Cart
I can see the SMith Chart on my H4. Is there a way to see it on my PC (W11 64bit)
By Charlie N2MHS <ucfargis1@...> · #30135 ·
Re: Menu Structure Map for V1.2.14? #firmware #menu
Hello Martin, Thank you very much for the detailed description. My print out of the SMITH menu is: SMITH LIN LOG REIM RX RLC GB GLC RpXp RpLC <- BACK I think this discussion is of still on topic. I
By Rudi · #30134 ·
Re: Menu Structure Map for V1.2.14? #firmware #menu
Well Rudi, the FW is organised as a tree in ui.c. The top menu is called "menu_top". This construction above searches all lines of ui.c (that I had read into the python variable ui and that I iterate
By Ho-Ro · #30133 ·
Re: Menu Structure Map for V1.2.14? #firmware #menu
Hello Martin, Thank you very much for your quick help. With the source code from github it works now without flaw :-) It is amazing what you can do with Python, if you know how to use it :-) I like
By Rudi · #30132 ·
Re: Menu Structure Map for V1.2.14? #firmware #menu
Hi Rudi, I have no clue what goes wrong o your side, I copy/pasted the code here from the group and it works fine. (I suspected that the forum SW did some strange formatting) As a quick check add
By Ho-Ro · #30131 ·
Re: Firmware Differences
S parameter - just complex number, no unit Range from -1 to 1 (real and imaginary part) Show how change reflect/thru signal in amplitude / phase from reference S11 = reflect / reference Re Im format
By DiSlord · #30130 ·
Re: How to use my NanoVNA-H4 to test resonant frequency of a tower?
Rudy Severns often has some useful input on this sort of thing: https://rudys.typepad.com/files/some-notes-on-measuring-tower-resonances.pdf
By Jim Allyn - N7JA · #30129 ·
Re: How to use my NanoVNA-H4 to test resonant frequency of a tower?
Don't know of any reason why it wouldn't work. However ... I'm guessing the wire vertical is NOT grounded at the base of it, but the tower is? That may have some effect on it. Maybe if you could test
By Jim Allyn - N7JA · #30128 ·
Re: How to use my NanoVNA-H4 to test resonant frequency of a tower?
This thread had me thinking and wondering if anyone has successfully determined the resonant frequency of a tower using a Nano? At a friend's recommendation I constructed a 1' x 2' loop and this
By Mike W9RE · #30127 ·
Re: Firmware Differences
Even imaginary numbers have units. This seems to be 0.644 of in_phase A/D full scale + 0.0532 of quadrature A/D full scale. SherpaDoug, WA1UWP
By Douglas Butler · #30126 ·
Re: Firmware Differences
Many thanks! I now understand it just means "(644/1000) + (53.2/1000)", just as in milliNumber nothing more than that thus the "644m + 53.2m" notation is totally appropriate, IMHO. -- Thanks Again!
By Tom VA7TA · #30125 ·
Re: Menu Structure Map for V1.2.14? #firmware #menu
Hello Ho-Ro, Thank you very much for this great improvement of your nanoVNA menu-map program :-) I am working with MacOS Mojave, and tried it now with Python 3.9. The files ui.c and plot.c are from
By Rudi · #30124 ·
Re: Menu Structure Map for V1.2.14? #firmware #menu
Now available on GitHub: https://github.com/Ho-Ro/NanoVNA-D/raw/NanoVNA-H-noSD/parse_menu.py
By Ho-Ro · #30123 ·
Re: Firmware Differences
m - milli u - micro M - mega G - giga And so on Re Im value - just complex number 644m + 53.2mj = 0.644 + 0.0532j
By DiSlord · #30122 ·
Re: Firmware Differences
Additional: Re Im - base measured value All other values calculated from it
By DiSlord · #30121 ·
Re: Firmware Differences
Greetings, Not that I have any real need to know but I am just curious what the "m" abbreviation stands for in the raw data example of "644m + 53.2m"? Does it happen to represent milliVolts RMS,
By Tom VA7TA · #30120 ·
Re: Firmware Differences
Base Smitch diagram value: Re Im https://en.wikipedia.org/wiki/Smith_chart#/media/File:Smith_chart_explanation.svg Also Re Im more universal for S11 and S21 some (so i use it as default) R+jX
By DiSlord · #30119 ·
Re: Firmware Differences
The chart setting defaults to the value it was set to at the last Save (for a given slot), so you can set it the way you like.
By Stan Dye · #30118 ·
Re: Menu Structure Map for V1.2.14? #firmware #menu
Then the menu parser doesn't make sense at all. It is a development tool living in my local source code git repository that is a fork from DiSlord's GitHub. But nevertheless, I made some code
By Ho-Ro · #30117 ·