Have you the DFU mode driver installed? The normal series port emulator is? used by the Windows programs that communicates the nanoVNA with the PC, such as nanoVNA sarver, but for updating the firmware you need a DFU mode driver that can be downloaded from the same ST website.
I was struck with? DfuSe_Demo until I realized this.
Regards,
Ignacio EB4APL
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El 26/03/2020 a las 2:22, James Bolm escribi¨®: I received a NanoVNA-H, firmware version 0.4.5-1-gfbbceca, Build Time: Dec 26 2019 - 19:32:31 today. Finding that there is new firmware, I read the WIKI and downloaded STSW_STM32080 from the ST website to facilitate the firmware upgrade. When I run DfuSe_Demo_V3.0.6_Setup.exe, it leads me through a few screens to enter my name, and then start the install. It immediately returns a screen with the message that "The wizard was interrupted before DfuSe V3.0.6 could be completely installed. Your system has not been modified. To complete installation at another time, please run setup again." I am running the setup program as an administrator, and have tried running it from the command line, also as administrator, again with no success.
Has anyone else had this problem, and if so, have you found a resolution?
Thank you,
Jim
--
El software de antivirus Avast ha analizado este correo electr¨®nico en busca de virus.
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I agree...? I'm just saying my calculator says the original circuit is closer...
If I was to change anything I'd swap the 11-ohm resistor with an 8.97-ohm 1% and I'd have a 49.998 impedance...
?
73 Dallas, KD4HNX
Whatever you do, don¡¯t fall victim to?¡°paralysis by
analysis.¡± Go ahead and buy/build one and start?
tinkering with it. This is a learn by doing hobby.
No politician or scholar assured your freedoms.
A Soldier, Sailor, Marine, or Airman did!
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On Thursday, March 26, 2020, 06:42:47 AM EDT, John Baines via Groups.Io <jbaines@...> wrote: These calculated values are correct if, and only if, the actual resistor values are exactly as marked which they will not be. 73 John M0JBA On 26 Mar 2020, at 10:31, Dallas KD4HNX via Groups.Io <mylastname@...> wrote:
That's not what my calculator says...
4.2 circuit:91 ohms in parallel with 51+11+51
take 1/91 + 1/113 = 1/x and that comes to 50.4068 ohms...
When I do that to circuit 4.2.1 I come up with 50.64 ohms...
73 Dallas, KD4HNX
Whatever you do, don¡¯t fall victim to ¡°paralysis by
analysis.¡± Go ahead and buy/build one and start
tinkering with it. This is a learn by doing hobby.
No politician or scholar assured your freedoms.
A Soldier, Sailor, Marine, or Airman did!
? ? On Wednesday, March 25, 2020, 11:30:27 PM EDT, RFy <gpdxdveil@...> wrote:
H4 F303 variant PCB artwork updated to 4.2.1 : Update the schematic diagram, the impedance of ch1 is closer to pure 50 ohms
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These calculated values are correct if, and only if, the actual resistor values are exactly as marked which they will not be.
73
John
M0JBA
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On 26 Mar 2020, at 10:31, Dallas KD4HNX via Groups.Io <mylastname@...> wrote:
That's not what my calculator says...
4.2 circuit:91 ohms in parallel with 51+11+51
take 1/91 + 1/113 = 1/x and that comes to 50.4068 ohms...
When I do that to circuit 4.2.1 I come up with 50.64 ohms...
73 Dallas, KD4HNX
Whatever you do, don¡¯t fall victim to ¡°paralysis by
analysis.¡± Go ahead and buy/build one and start
tinkering with it. This is a learn by doing hobby.
No politician or scholar assured your freedoms.
A Soldier, Sailor, Marine, or Airman did!
On Wednesday, March 25, 2020, 11:30:27 PM EDT, RFy <gpdxdveil@...> wrote:
H4 F303 variant PCB artwork updated to 4.2.1 : Update the schematic diagram, the impedance of ch1 is closer to pure 50 ohms
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That's not what my calculator says...
4.2 circuit:91 ohms in parallel with 51+11+51
take 1/91 + 1/113 = 1/x and that comes to 50.4068 ohms...
When I do that to circuit 4.2.1 I come up with 50.64 ohms...
73 Dallas, KD4HNX
Whatever you do, don¡¯t fall victim to?¡°paralysis by
analysis.¡± Go ahead and buy/build one and start?
tinkering with it. This is a learn by doing hobby.
No politician or scholar assured your freedoms.
A Soldier, Sailor, Marine, or Airman did!
toggle quoted message
Show quoted text
On Wednesday, March 25, 2020, 11:30:27 PM EDT, RFy <gpdxdveil@...> wrote:
H4 F303 variant PCB artwork updated to 4.2.1 : Update the schematic diagram, the impedance of ch1 is closer to pure 50 ohms
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Moderated
Re: Another off-topic about Smith chart
It's just 1/x but flipped and shifted ;)
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Moderated
Re: Another off-topic about Smith chart
"Smith Chart : In this computer era, this extremely high-effort demanding,
highly-inaccurate, old-time graphics tool became completely obsolete,
because it is a totally useless one in every other aspect except that one
of "just take-a-look demo" - or of fancy impression making to unsuspected,
innocent, inexperienced beginners, of course"
Don't know where this idea comes from but it's bollocks. Looking at a smith chart I can instantly get a "feel" of the characteristics of a circuit. There is a reason that when asked to troubleshoot measurements I'll always request to see the smith chart first rather than the logmag plot. I can easily tell apart under-coupled vs over-coupled magnetic loop antennas looking at a smith chart, but they look identical on a logmag plot. Logmag + phase has all the information in theory, but it would take me some minutes of thinking to tell if the magloop is under-coupled or over-coupled. Of course, if I want to know the 10dB bandwidth of the antenna I'll look at logmag instead, there is a time and place for everything.
btw the impedance scale of the middle line on a smith chart is (1+x)/(1-x). It compresses [0, infinity) into [-1, 1]. If you think in terms of reflection coefficient rather than impedance, then the scale of the smith chart is linear and it's nothing more than a polar plot.
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Moderated
Re: Another off-topic about Smith chart
Oooh, si tacuisses ! You try to make believe to be way above it, but: Is that "innocent, unexperienced beginner" perhaps your own point of view? This computer era definitely did not come into existence without many thousands of people that used the Smith Chart. Some people don't have the desire to know more about RF applications than just to watch TV or play games etc. (where others used the Smith Chart for them so they can do that). If that describes you: That's fine: It is your own choice. Just click away. But if you earnestly want to advance in RF design, read on: Obviously you don't know SimSmith: It combines highest design value with comparatively little learning effort, is extremely accurate: both numerically (more accurate digits than you will ever need), graphically highly zoomable, it has a huge number of possible and most useful applications, and is so very flexible, that you even can use it for innovative challenges that perhaps nobody ever did before. It's not perfect, but it is probably the best any Smith Chart user can get. Hans, DJ7BA -----Urspr¨¹ngliche Nachricht----- Von: [email protected] < [email protected]> Im Auftrag von Carey Fisher Gesendet: Donnerstag, 26. M?rz 2020 04:09 An: [email protected]Betreff: Re: [nanovna-users] Another off-topic about Smith chart For people actually designing RF equipment, the Smith Chart is a valuable tool. On Wed, Mar 25, 2020 at 3:10 PM pez@arg <petrosez7@...> wrote: Smith Chart : In this computer era, this extremely high-effort
demanding, highly-inaccurate, old-time graphics tool became completely
obsolete, because it is a totally useless one in every other aspect
except that one of "just take-a-look demo" - or of fancy impression
making to unsuspected, innocent, inexperienced beginners, of course
-- Carey Fisher careyfisher@... -- Diese E-Mail wurde von Avast Antivirus-Software auf Viren gepr¨¹ft.
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On Wed, 25 Mar 2020 18:22:14 -0700, you wrote: I received a NanoVNA-H, firmware version 0.4.5-1-gfbbceca, Build Time: Dec 26 2019 - 19:32:31 today. Finding that there is new firmware, I read the WIKI and downloaded STSW_STM32080 from the ST website to facilitate the firmware upgrade. When I run DfuSe_Demo_V3.0.6_Setup.exe, it leads me through a few screens to enter my name, and then start the install. It immediately returns a screen with the message that "The wizard was interrupted before DfuSe V3.0.6 could be completely installed. Your system has not been modified. To complete installation at another time, please run setup again." I am running the setup program as an administrator, and have tried running it from the command line, also as administrator, again with no success.
Has anyone else had this problem, and if so, have you found a resolution?
Thank you,
Jim
What operating system? WIN10 (and WIN7) protects some folders against modifications. Create a directory in the root and name it as you wish, e.g. as C:\MyName and do the install there. w.
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H4 F303 variant PCB artwork updated to 4.2.1 : Update the schematic diagram, the impedance of ch1 is closer to pure 50 ohms
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Moderated
Re: Another off-topic about Smith chart
For people actually designing RF equipment, the Smith Chart is a valuable
tool.
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Show quoted text
On Wed, Mar 25, 2020 at 3:10 PM pez@arg <petrosez7@...> wrote: Smith Chart : In this computer era, this extremely high-effort demanding,
highly-inaccurate, old-time graphics tool became completely obsolete,
because it is a totally useless one in every other aspect except that one
of "just take-a-look demo" - or of fancy impression making to unsuspected,
innocent, inexperienced beginners, of course
--
Carey Fisher
careyfisher@...
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I received a NanoVNA-H, firmware version 0.4.5-1-gfbbceca, Build Time: Dec 26 2019 - 19:32:31 today. Finding that there is new firmware, I read the WIKI and downloaded STSW_STM32080 from the ST website to facilitate the firmware upgrade. When I run DfuSe_Demo_V3.0.6_Setup.exe, it leads me through a few screens to enter my name, and then start the install. It immediately returns a screen with the message that "The wizard was interrupted before DfuSe V3.0.6 could be completely installed. Your system has not been modified. To complete installation at another time, please run setup again." I am running the setup program as an administrator, and have tried running it from the command line, also as administrator, again with no success.
Has anyone else had this problem, and if so, have you found a resolution?
Thank you,
Jim
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Re: Wich one the get ? nanoVNA F or H4
Hi Kell,
The unit you purchased is the latest version of the 2.8 inch Nanovna.
The H4 version has the same RF and operating system design but with a 4inch display and a uP with larger flash memory for about $15 more. The F is different in terms of its uP and operating system and its twice the price but has a full metal enclosure.?
There is a recent thread on the pros and cons of each in the forum.?
Personally, as a starting point, I would get the H4 version as it is useful up to about 1.3GHz. If you want cutting edge (hobbiest) technology, you should go for the V2 that goes up to 3GHz - BUT - the current version only has a 2.8inch display.?
Your call.?
On Wed, 25 Mar 2020 at 7:53 PM, Kell Bodholt<Kbodholt@...> wrote: Wish I would have subscribed to this nanovna@... site before buying.? Live and learn.? I just ordered and received today a ¡¾Upgraded¡¿AURSINC Vector Network Analyzer 10KHz -1.5GHz HF VHF UHF Antenna Analyzer Measuring S Parameters, Voltage Standing Wave Ratio, Phase, Delay, Smith Chart(Latest Version REV3.4) from Amazon.? On the back is a sticker NanoVNA-H, H/W version 3.4, 50k-1.5GHz. So based upon what I reading here what I bought is not the latest (-F or -H4) is my assumption accurate, excluding the V2 and/orSAA2 I see posted above ?? Should I return and get the -F or -H4?
The display is rather small, assuming 2.3" and I can barely read the SWR values with my reading glasses.? If I was to return this and get the 4" screen -F or -H4 is the actual font size larger?
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Re: Wich one the get ? nanoVNA F or H4
Wish I would have subscribed to this nanovna@... site before buying. Live and learn. I just ordered and received today a ¡¾Upgraded¡¿AURSINC Vector Network Analyzer 10KHz -1.5GHz HF VHF UHF Antenna Analyzer Measuring S Parameters, Voltage Standing Wave Ratio, Phase, Delay, Smith Chart(Latest Version REV3.4) from Amazon. On the back is a sticker NanoVNA-H, H/W version 3.4, 50k-1.5GHz. So based upon what I reading here what I bought is not the latest (-F or -H4) is my assumption accurate, excluding the V2 and/orSAA2 I see posted above ? Should I return and get the -F or -H4?
The display is rather small, assuming 2.3" and I can barely read the SWR values with my reading glasses. If I was to return this and get the 4" screen -F or -H4 is the actual font size larger?
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Re: NanoVNA-V2 from Tindie
I also just received notice from USPS that the S-A-A 2 is in transit. With any luck I should receive it within a few days. I placed my order on the 8th of March, so given the current state of affairs with COVID-19 I can't really complain about the transit time. Other members who ordered around the 8th will probably also start receiving postal delivery notices.
I look forward to putting the device through its paces when it arrives.
- Herb
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Re: NanoVNA-V2 from Tindie
On Wed, Mar 25, 2020 at 02:22 PM, Rune Broberg wrote:
Hi all,
An S-A-A 2 device is on its way to me, and I will update nanovna-saver
as soon as possible when I get it. I am sorry for having taken so long to
get a new version up, but real life has interfered. :-/
=================================================================
Rune, Good to hear from you. Oristo has also been curiously absent of late. I'm hoping real life means your NanoVNA-saver efforts resulted in a commercial opportunity you couldn't turn down. I am also waiting for delivery of an S-A-A 2, as is Kurt and a few other members. Time will tell when delivery occurs.
Glad to hear you anticipate adding support of the S-A-A 2 to NanoVNA-saver. I haven't investigated how many of the NanoVNA console commands are duplicated, or how increased measurement points via USB transfer are performed (maybe like the NanoVNA raw scan command?).
On an un-related topic, were you ever able to figure out the coding for the NanoVNA-F "capture" command? My own efforts at a python script using the "capture" command have proved fruitless. The NanoVNA-H and NanoVNA-H4 follow ch045's original script but the NanoVNA-F seems to need some extra handling.
Regards,
- Herb
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Moderated
Re: Another off-topic about Smith chart
The Smith chart assumes that the impedances have been "normalized". Just divide by 50 to get one in the center Bob On Wed, Mar 25, 2020, 8:05 AM vaclav_sal via Groups.Io <vaclav_sal= [email protected]> wrote: An off - topic question to any math wiz knowledgeable about Smith chart.
There are oodles of stuff about Smith chart, but I have not be able to
find
WHAT is the actual scale of the coordinates.
For example
real axis ( R +j0) goes from "zero" (left) to center of the chart - MOST
of the time
designated as "one" .
Therefore - what is the scale between 0 and 1 - linear or log?
( No need to discuss log(0))
It PROBABLY makes no difference, but IMHO log scale would "loose" some
visual
precision.
Please, no sermons / references about what is Smith chart , how to use it
etc.
Sorry to post here , but I have limited choice.
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Moderated
Re: Another off-topic about Smith chart
Thanks for the reference.
Not bad first response, appreciate that very much.
Cannot say much about the rest of them.
In future I will limit my posts to
"how much is 1 and 1 " , asking to avoid sermons is futile.
Interestingly (?) on FIRST page you wrote "The chart is constructed in a rectilinear system
instead of polar..."
I am not going to dispute that...
Will try both linear and log , but I think the linear is really easier on the eye.
Many thanks.
73 AA7EJ
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Re: NanoVNA-V2 from Tindie
Hi all,
An S-A-A 2 device is on its way to me, and I will update nanovna-saver
as soon as possible when I get it. I am sorry for having taken so long to
get a new version up, but real life has interfered. :-/
--
Rune / 5Q5R
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On Wed, 25 Mar 2020, 20:51 hwalker, <herbwalker2476@...> wrote: On Wed, Mar 25, 2020 at 12:21 PM, Holger M¨¹ller wrote:
Subject has arrived to me today. Hope I find some time to check and test
it with NanoVNA-Saver soon.
============================================
Holger,
Glad to hear V2's are finally starting to make it to their
destinations. I hope its performance lives up to expectation. My
understanding is there is a forked version of NanoVNA-saver that you have
to use with the -V2. The release at Rune's GitHub site will not work with
the -V2.
There is a native VNA software application for the -V2 called NanoVNA-QT
that should work out of the box, after you install the appropriate driver.
I don't know if you received a copy with your shipment or if you have to
download it yourself. You can only perform firmware updates from the
native application so you will want to install it at some point anyway.
I don't have a -V2 so the above is what I have gathered from reading
about it.
- Herb
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Moderated
Re: Another off-topic about Smith chart
Thank you for the suggestion, from which I see now that
I have to correct what I wrote, as follows : for the newcomer,
the whole Great Idea of that very difficult to learn Smith Chart
is just of historic interest, an obsolete one, nowadays - imho,
of course.
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Dallas N4DDM
OwO
James Bolm
Robert Malsbury