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Re: Inductor S21 measurement using nanoVNA
I tried my nanovna as a spectrum analyzer and it is interesting.? Amplitude isn't calibrated.? I measured my signal generator and it shows me two responses fairly close together; I verified on my
By Bob Albert <bob91343@...> · #4199 ·
Re: Annotated nanoVNA menu diagram
> > I hope there will be no objection to me sharing > > HTML is in public domain > https://github.com/oristopo/nVhelp/blob/master/html/Hnano.htm
Re: Annotated nanoVNA menu diagram
Hi Larry - OK, I never dared press DFU and anyway added a slide switch for hard DFU, too often required for hangs.. OK, I see "CORRECTION", not "Calibration" Maybe raw data helps understanding impact
By Oristo · #4197 ·
Re: Annotated nanoVNA menu diagram
HTML is in public domain https://github.com/oristopo/nVhelp/blob/master/html/Hnano.htm
By Oristo · #4196 ·
Re: Annotated nanoVNA menu diagram
I wanted a printed chart that I can hang on my wall so I changed the color scheme. I hope there will be no objection to me sharing an ink-saving chart.
By W5DXP <w5dxp@...> · #4195 ·
Re: errors of "error" models
gin & pez @ arg; I am comforted that I seem to be approaching a conceptual understanding of your work. It has elevated my interest. I am responding to your question with an expanded definition that is
By Gary O'Neil · #4194 ·
Re: Annotated nanoVNA menu diagram
When you click the DFU menu button, you get the next menu with 2 items: Reset and Enter DFU and Cancel.? The full word:. Calibration is a switch that can be inverted text to show calibration is being
By Larry Rothman · #4193 ·
Re: NanoVNA parallel R measurement
Since ohms are obviously not watts, please give us the formula that you are using for that conclusion.
By W5DXP <w5dxp@...> · #4192 ·
Re: Annotated nanoVNA menu diagram
Hi Larry - I totally agree and can rearrange that on the tree.. Actually, I calibrate pretty often, nearly every time before measurement, to consider everything except DUT as "ideal". Yes, but my CSS
By Oristo · #4191 ·
Re: info update
Also, touch screen seems much less responsive than Gen Hu releases, and hung repeatedly (requiring power off/on) when trying to set START stimulus.. ... back to NanoVNA-H__900_ch_20191003.dfu
By Oristo · #4190 ·
Re: info update
It eventually hung at power-on for me WITHOUT doing touchscreen calibration, fortunately after capturing mostly legible menu screens. Took this opportunity to exercise starbuck5250's DFU-from-Hex
By Oristo · #4189 ·
Re: Inductor S21 measurement using nanoVNA
Hi, I replaced the cables with much shorter ones, and re-calibrated using these 2 new cables (see attached photos), and I am getting the same results. Not sure the cables interfere with the nanoVNA
By aa_talaat@... · #4188 ·
NanoVNA parallel R measurement
Hi, I am fairly new to RF and have been working in electronics as a hobby for decades, but have recently gone back to school and am working toward an engineering degree, either electrical or
By sean@... · #4187 ·
Re: Inductor S21 measurement using nanoVNA
Thank you for your response. During SOLT calibration, I included the two black coaxial cables, so I thought that this way, I neutralized any effect of the connecting cables. Can you please elaborate
By aa_talaat@... · #4186 ·
Re: Determining SOLT kit errors via basis pursuit
Ok, ya got me. Reading the introductions to the two papers left me going, huh? But I do hope it is easy, and that you do publish a simple method.
By Starsekr · #4185 ·
Re: errors of "error" models
36 : Primary AnyVNA Measurements 35 : Straight In The Heart of The Matter - 6 October 2019 : /g/nanovna-users/message/4177 @Gary O'Neil Hello Gary, Well, to start from the beginning,
By gin&pez@arg · #4184 ·
Re: Nano saver - Reading / Writing cal data
Particularly if NanoVNA-H V2 may have no touch screen or is controlled via BlueTooth or USB from mobile devices (as now by WebUSB app with recent Android versions)
By Oristo · #4183 ·
Re: Nano saver - Reading / Writing cal data
It would seem sensible to add a reciprocal command if at all possible. Anything to avoid having to physically manually enter long sequences is very desirable, especially as it's only possible to
By Martin · #4182 ·
Re: Nano saver - Reading / Writing cal data
Please have a look at the firmware. The "save" command saves the internally measured calibration data to the internal save location [0-4], recall is the reciprocal command to load calibration data
By Erik Kaashoek · #4181 ·
Re: Inductor S21 measurement suing nanoVNA
you're measuring your inductor through two transformers (coax cables). So, the capacitance shown on the display of NanoVNA is capacitance on the cable input, but not on the inductor. When you connect
By QRP RX · #4180 ·