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Interface with 100R twisted pair cable
I have not seen it addressed before but what is the best technique to interface the Nanovna with a 100R differential interface?
By mailscreen@... · #17209 ·
Re: Recommended Firmware for Classic NanoVNA (Bad clone "white")
At message # 16998, OneOfEleven again provides access to your GitHub. There you will find your FW, which allows you to clear the configuration through the menu. You will also find the nanovna-app
By Igor - PY3IG · #17208 ·
Re: Recommended Firmware for Classic NanoVNA (Bad clone "white")
Yea I saw that, I unfortunately can't connect to the unit in terminal mode to execute a clearconfig command. I can't see a com port for the device on windows 7 using the virtual drivers. It's sitting
By Vince Rooney · #17207 ·
Re: Where did OneOfEleven go
I only got beeps to and no scanning on an older firmware release. Apparently OneOfeleven's program requires firmware that supports a newer data transfer mode. Roger
By Roger Need · #17206 ·
Re: Recommended Firmware for Classic NanoVNA (Bad clone "white")
Sometimes after a firmware upgrade people do a Clearconfig 1234 Console command using a terminal program. This clears up some problems.... Roger
By Roger Need · #17205 ·
Re: Auto-logging/extracting data over time (unattended measurement) #newbie
Hello, If your still interested, I might write some software to do this logging. It would be written in Keysight VEE and logged into MS Excel. I would prefer to take this outside the group. Let me
By pete.berquist · #17204 ·
Re: hard reset? #crash
I took the case apart and it turns out there is a small frame molded into the top case that encircles the lcd. In my case that small frame was a bit too thick. So the solution was to take a dremel
By diyer · #17203 ·
Re: hard reset? #crash
You are a genius Larry. I grabbed the 2 halves of the case separately and put tension on them as if I was trying to pull them apart and voila, it works again. I should have thought of this as before I
By diyer · #17202 ·
Re: Recommended Firmware for Classic NanoVNA (Bad clone "white")
Yea I purchased better a calibration kit for it. The one that came with it had a load of 51.6 ohms (not terrible). The new kit is 50.3 ohms on the load. It seems to be reading something with nothing
By Vince Rooney · #17201 ·
Re: Where did OneOfEleven go
Hi 1-11 Superb program.. the best I'v seen.. Very Nice Graphical and professional look... top functions, all we need Testing the 1.0.73 now on my NanoVNA Would it be connectable to NanoVNA-F ? or the
By Jempi ( ON7MA ) · #17200 ·
Re: Contact and Book Reference
It is an outstanding source for elder manuals from Tek, HP,...... larry
By Lawrance A. Schneider · #17199 ·
Re: hard reset? #crash
Sounds like you've got something pressing constantly on the touchscreen.? Remove the front cover over the LCD and see if the unit turns on ok.? On Sat, 5 Sep 2020 at 9:43 PM, diyer<m240zz@...>
By Larry Rothman · #17198 ·
Re: Recommended Firmware for Classic NanoVNA (Bad clone "white")
The smith chart shows around the centre but you've got nothing connected to port 0. It should be at the right side if port 0 is open?? Are you sure your 50 ohm calibration part is good? On Sat, 5
By Larry Rothman · #17197 ·
hard reset? #crash
Is there such a thing as a hard reset? A real switch somewhere, not the screen? Maybe remove battery and reinstall? My nanovna-h with ver 0.4.5-1 gfbbceca was working ok, occasional hang but on off
By diyer · #17196 ·
Re: Recommended Firmware for Classic NanoVNA (Bad clone "white")
Hi Larry, Yea that¡¯s the first thing I did. Ran through it a couple of times. The screen calibration seems to be a little wonky now too.
By Vince Rooney · #17195 ·
Re: Recommended Firmware for Classic NanoVNA (Bad clone "white")
That should be a stable release. Did you press the Reset menu button immediately before calibration? On Sat, 5 Sep 2020 at 8:40 PM, Vince Rooney<vince@...> wrote: Good Evening Everyone, I
By Larry Rothman · #17194 ·
Re: Recommended Firmware for Classic NanoVNA (Bad clone "white")
Good Evening Everyone, I just uploaded the latest release from 6-19-2020 (2020-06-19T23:08:21.000Z 9f940ce 202) and the traces are jumping all over the place. I tried recalibrating it and it didn't
By Vince Rooney · #17193 ·
Re: S11 Magnitude resulting into negative real part of impedance
In that respect, who remembers the articulated test ports for use with the 8510 VNA (now lusted after, discontinued, but still expensive - originally over $100k). Those were EXPENSIVE "cables"!!!!!!
By W0LEV · #17192 ·
Re: S11 Magnitude resulting into negative real part of impedance
Clearly the negative real part in this case is in error. As has been pointed out, calibration error is a very likely culprit. Here's one form of calibration error that does not seem to be widely
By Dana Whitlow · #17191 ·
Re: We started selling SAA2 with N-type RF connector and 4-inch display
I not see any reason use in SAA2 1024 not calibrated point mode for CPU send (this need a lot of ram) I test speed on H4 (on V2 result should be some) (thanks OneOfEleven for add points/sec measure):
By DiSlord · #17190 ·