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Re: edy555 design notes on CALIBRATION sets
Hi Mike-
This was a little unclear to me, but interesting. Are you saying thatExactly, 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" to automagically account for alligator clamps and subsequent readings only about DUTs subsequently clamped. More "ideal" might be SHORT using a length of wire clamped between alligators approximately the length of resistor and coil. Then the data you posted was for that inductor?Yes, one that is very liable to stray pickup. The attached image shows nanoVNA display for a frequency scan, and hopefully visible is an approximating circular segment Smith plot, as reactances should be. While component RLC values at intended application wavelength[s] are obviously of interest, observing Smith plots over a wider range can reinforce credibility or reveal anomalies. Having not been otherwise informed, nanoVNA reports 50 Ohms for that 51 Ohm resistor; I can live with 2% errors... IMO, 5 stored calibrations are none too many. |
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Re: NanoVNA-Saver 0.1.0
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 your efforts cheersBill kd5yyk
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On Wednesday, October 2, 2019, 10:48:41 AM CDT, Rune Broberg <mihtjel@...> wrote:
Hi Bill, The .exe file should work just fine on Windows 10. First startup can take a little while, maybe 10-20 seconds, but after that it should run fine. What happens when you try to start it? -- Rune / 5Q5R On Wed, 2 Oct 2019, 17:19 bill wright via Groups.Io, <chief6226= [email protected]> wrote: ? Is there a trick to get the 0.1. version .exe to work.? I am on a win 10. | | Virus-free. www.avast.com | |
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Re: errors of "error" models
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: 21 : The Mathematica Code and the Unpacked DERDEI Code : /g/nanovna-users/message/3290 we just uploaded the new, "unpacked" version of DERDEI at: Also allow us, please, to inform, facupov, the interested Common User that in order to avoid unnecessary complications, he has to take into account the following: (0.a/b) As it is detailed in the messages: Re: [Maxima-discuss] Maxima 5.38.1 64 bit build Windows From: <petrosez@gm...> - 2016-06-13 11:18:29 Re: [Maxima-discuss] Maxima 5.38.1 64 bit build Windows From: Gunter K?nigsmann <gunter@pe...> - 2016-06-14 06:44:35 the version 5.38.1 of [maxima] requires a bunch of hard to follow instructions for installation under wxpp32 or wxpp64. Therefore, we * e r r o n e o u s l y * suggested, what we had avoid to say, about this installation at: 2 : yza, Sep 21, 2019 : /g/nanovna-users/message/2802 and thus he should install the last * f u l l y * working 32-bit version 5.36.1 of [maxima] with [sbcl]: We are terribly sorry for the inconvenience. Please accept our apologies. (0.b/b) Note: He may need to also do the following: |Start|Settings|Control Panel|System|Advanced|Performance|Data Execution Prevention|(o) Turn on DEP for all programs and services except those I select:|Add|{X:\}{wxpp32}Program Files\ or{wxpp64}Program Files (x86)\Maxima-sbcl-5.36.1\bin\sbcl.exe| |Open| (1) He should unzip [DERDEI20191001.7z] to the default folder with name: [DERDEI20191001], in the root folder of a drive, which, if it is different than of our [K:], lets say [X:], then he has to edit [DERDEI-unpacked_20191001-600-1000.MC] and in the multi-lines beginning with /*10*/ up to /*15/ to replace every occurrence of K: by X: (2) He should skip | ignore any instructions given in the Documentation: regarding the file: [functions.txt], because all the contents of this file are now embedded into: [DERDEI-unpacked_20191001-600-1000.MC] at the aforementioned lines, and thus he should also ignore completely the file: [useless-MC-embedded-functions.txt], which was included into [DERDEI20191001.7z] just for the shake of completeness (3) He may execute sequentially, the 15 multi-line commands by Copy-Paste into [XMAxima] and Enter them one-by-one (4) He may omit the just informative multi-line commands beginning with: /*2*/, /*4*/, /*6*/, and /*8*/ (5) If he likes, then in just three 3 steps he can: (I) copy the whole content of [DERDEI-unpacked_20191001-600-1000.MC], then: (II) paste them to [maxima], and finally: (III) run it fully. (6) He may want to change the way in which the six 6 graphics windows are presented by [gnuplot] and to select between the "cascading" way, in which each window has to be closed, in order to appear the next one, or the simultaneous one, by following the instructions provided by the [Maxima 5.36.0 Manual: 12. Plotting][12.3 Functions and Variables for Plotting][System variable: gnuplot_view_args]: "In Windows versions of Gnuplot older than 4.6.3 the behavior of "~s -" and "-persist ~s" were the opposite; namely, "-persist ~s" made the plot window and the gnuplot interactive shell remain, while "~s -" closed the gnuplot shell keeping the plot window. Therefore, when older gnuplot versions are used in Windows, it might be necessary to adjust the value of gnuplot_view_args." (7) If he is indeed a [mathematica] user, then it is up to him to transfer -more-or-less "easily"- the graphics commands in the remaining just four 4 [maxima] multi-line commands beginning with: /*3*/, /*5*/, /*7*/, and /*9*/, to [mathematica], because: "Macsyma" [maxima] "was revolutionary in its day, and many later systems, such as Maple and Mathematica, were inspired by it" - at least, if not much more, more than that... Sincerely, gin&pez@arg 26 |
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Re: edy555 design notes on CALIBRATION sets
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 inductor?
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Mike WY6K "... somewhere in the distance, there's a tower and a light, broadcastin' the resistance, through the rain and through the night..." On Wednesday, October 2, 2019, 12:11:09 PM CDT, Oristo <ormpoa@...> wrote:
On Mon, Jul 29, 2019 at 11:59 AM alan victor wrote: if you desire to use the nanoVNA as a component measurement tool, like anLCR meter, conduct your measurments at say 1 MHz or even 50 kHz!OSL calibration and measurement for alligator clips, using axial lead 51 Ohm resistor LOAD 23 Ohms 7 uH @ 0.1 MHz 5.5 Ohms 6.6uH @ 1 MHz 40 Ohms 400mH @ 10-100MHz ? 57 Ohms 900pH @500-900MHz Actual measurements had more separation between DUT and nanoVNA than shown in image hopefully attached; it matters particularly for air-wound coils... LCR measurement <> |
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Re: edy555 design notes on CALIBRATION sets
On Mon, Jul 29, 2019 at 11:59 AM alan victor wrote:
if you desire to use the nanoVNA as a component measurement tool, like anLCR meter, conduct your measurments at say 1 MHz or even 50 kHz!OSL calibration and measurement for alligator clips, using axial lead 51 Ohm resistor LOAD 23 Ohms 7 uH @ 0.1 MHz 5.5 Ohms 6.6uH @ 1 MHz 40 Ohms 400mH @ 10-100MHz 57 Ohms 900pH @500-900MHz Actual measurements had more separation between DUT and nanoVNA than shown in image hopefully attached; it matters particularly for air-wound coils... LCR measurement <> |
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Re: NanoVNA-Saver 0.1.0
Hi Rune,There is a small bug in the serial connect routine.If I disconnect the Nano while scanning, I get the pop-up error and that's OK.If I then click on the Rescan button, the selected serial port disappears but the button underneath still shows "Disconnect".I think if there is no serial port shown, that should be reset as there is no recovery that I can see - 'Saver just hangs.
Regards,Larry |
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Re: NanoVNA-Saver 0.1.0
Here's the console output when when I hit the load cal button...
nick@LM19-2:~$ python3.7 ./nanovna-saver/nanovna-saver.py NanoVNASaver 0.1.0 Copyright (C) 2019 Rune B. Broberg This program comes with ABSOLUTELY NO WARRANTY This program is licensed under the GNU General Public License version 3 See for further details Settings: /home/nick/.config/NanoVNASaver/NanoVNASaver.ini Gtk-Message: 17:32:47.985: GtkDialog mapped without a transient parent. This is discouraged. I get the same Gtk-Message when I save a cal with or without the .cal extension. The cal files become visible if I give them a .cal extension. Files without the .cal extension are not visible in the object picker even when All Files is selected e.g. bnc_1 and bnc_2 are not visible to the object picker because they do not have the .cal extension. It is possible to save a cal file without the .cal extension in which case it is hidden from the object picker. Perhaps the save dialog should force a .cal extension e.g. by adding it automatically to the Name field? 73 Nick |
Oristo
bill wright
gin&pez@arg
WY6K Mike Watts
