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What is the Z range of the NanoVna? I characterized a 500 ohm pot with another Z instrument with the pot set to 500 ohms. At 10 MHz the pot looked something like a resistance 480 ohms with about 80

Hello Rune- First, thanks for the very useful NanoVNA-Saver application! Earlier in this thread you mentioned setting the data rate at 115200 bps. This is 2nd hand information- somewhat anecdotal- but

Herb, You nailed it!? I did the reset and calibration and now the unit works! I am not so delighted with what I see, as it isn't that close to my static measurements.? However, the unit now behaves

Thanks for asking the question. I am familiar with them methods of old. Like sala nimi outlined. The R ch and the A and B ch's are down converted to a low IF and these are applied to the inputs of

Hi Bob, You will find everything in the forum Wiki and Files. Calibration is probably required, please read the latest manual on how to do it. There you can get answers to many possible questions. I'm

I haven't looked in detail at the nanoVNA method, but normally you would mix down to a low frequency and do IQ sampling. This is a complex number that can easily be converted into a magnitude and

I understand how a (Wheatstone) bridge gets a voltage or magnitude relative to reactance difference. But how does it get the phase of the that vector. I think there are some hard ways of getting that

Bob, One other thing to try before you start looking at the hardware. The first NanoVNA I bought came pre-calibrated and was ready to go out of the box. A second cheaper NanoVNA that I bought came

Any time you push new F/W to the device it is good practice to re-cal the touchscreen. Now, with that said, I just updated one of my units and found the touch surface was still calibrated. So - if you

Hmm. Can newly installed firmware detect that it has never been touch screen calibrated and automatically start in TOUCH CAL the first time?

Good day, When I began this process of working with the NanoVNA, I was not certain how the cal standards were being treated. Since the completed cal showed a perfect open, short and termination, I was

Larry, thanks for the encouraging information.? Where do I get the schematics?? What could be wrong with the bridge?? Where do I find it?? Pictures would help. I don't have much to lose at this

Bob, It sounds like the bridge circuit on CH0 is bad and the nano is not seeing any reflected energy to measure.Don't throw it away, just do a little troubleshooting - the schematics are

Rune, forgive me if you aren't the guy to whom I should ask this. I purchased a nanoVNA recently and it isn't working as I think it should.? Regardless of terminations I always get a dot at the right

Hi Mike- Exactly, IMO "calibration" should reflect actual measurement configuration More specifically, SHORT was by clamping alligators together and OPEN was by unclamping them. I want nanoVNA "CAL"

On Mon, 29 Jul 2019 at 16:59, alan victor <avictor73@...> So at this point, create the best short, open and 50 ohm load... the Perhaps there is a transaction issue, but the source code I

RuneSorry for the alert? Win10 was trying to protect me from the download.I deleted? and then reloaded. This time it gave me a functional app.? Now all is well.I will test on thanks you so much for

26 : Correction of Maxima Version and "Unpacked" DERDEI Code - also @Jose Luu : /g/nanovna-users/message/3278 - Hello, Allow us, please, to inform you that, as we already promised at:

This was a little unclear to me, but interesting.? Are you saying that you used the 51 ohm resistor held by the jaws of the alligator clips for calibration?? Then the data you posted was for that

Hi Bryan, I'm aware of the issue. I don't know if it can be turned off via the serial console - thus far, my advice to users has been to not put the device in TDR mode when using it with