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Because of the problems with 1.2.14 missing the read from SD menu, I downloaded 1.2.19 and attempted to save my cal files again. They saved without errors, but when I try to read them I get format error.

Please advise what is most recent version that supports writing and reading from the SD card.

Thanks

A user has the nanovna H4 with this display defect. Suggestions before switching to a new display?
Igor.

On Mar 4, 2023, at 7:11 PM, robert miles <bob@...> wrote:

?I found the youtube videos by W2AEW on the nanovna to be excellent. He does one on updating the H4 from a dfu file

#320: How to update the NanoVNA-H4 firmware using Windows 10 and .DFU file ( )
youtu.be ( )

( )

Coupled with the beginners guide supplied by Roger et al it should get you going.
Regards
Bob
GM4CAQ

On 4 Mar 2023, at 8:32 pm, Steve Bowers <bowxyz@...> wrote:

? That¡¯s great! Much obliged!

Thanks
Steve

On Mar 4, 2023, at 12:39 PM, Roger Need via groups.io
<sailtamarack@...> wrote:

?On Sat, Mar 4, 2023 at 09:24 AM, Steve Bowers wrote:

I¡¯m trying but I¡¯m getting some erratic information. I¡¯m sure it¡¯s

user error.

I put a copy of the Absolute Beginner's Guide on my Box account for you to
download. Download button in upper right hand corner. Here is the link.

Roger

<hqdefault.jpg>

On Fri, Mar 3, 2023 at 05:54 PM, Siegfried Jackstien wrote:

if you calibrate the cable out then all should show near similar results
.. not??

measure without cable calibration can not work good so question is ...
did you calibrate out that 3m cable??

if calibrated (and calibration IS LOADED ALSO!!) then nanovna_app shows
near perfect results compared to internal calibration

only slight variations depending how high you have set averaging in the
device

higher average gives smoother curves but also a more exact calibration ...

dg9bfc sigi

This was a comparison of how well each one calibrated the same cable and measured a 1K DUT. A new calibration using the same cal loads was done at the end of the 3M cable for each test and then they were compared. The results for NanoVNA App, NanoVNA Saver and Standalone VNA should all be very close because they all are all calibrated the same and used the same 1K SMD resistor as the DUT. Averaging was not used in these tests - just one sweep.

The standalone NanoVNA-H4 and NanoVNA Saver gave very similar results. NanoVNA did NOT do well. As "btomek" pointed out in hos first post there is something wrong with the NanoVNA App calibration algorithm.

Try it your self and see what you get and post your results...

Roger

Because of the problems with 1.2.14 missing the read from SD menu, I downloaded 1.2.19 and attempted to save my cal files again. They saved without errors, but when I try to read them I get format error.

Please advise what is most recent version that supports writing and reading from the SD card.

Thanks

On 4 Mar 2023, at 8:32 pm, Steve Bowers <bowxyz@...> wrote:

? That¡¯s great! ?Much obliged!

Thanks
Steve

On Mar 4, 2023, at 12:39 PM, Roger Need via groups.io
<sailtamarack@...> wrote:

?On Sat, Mar ?4, 2023 at 09:24 AM, Steve Bowers wrote:

I¡¯m trying but I¡¯m getting some erratic information. ?I¡¯m sure it¡¯s

user error.

I put a copy of the Absolute Beginner's Guide on my Box account for you to
download. ?Download button in upper right hand corner. ?Here is the link.

Roger

Hi david
I am not at home right now so not near my laptop but this might help?

On 2 Mar 2023, at 4:44 pm, David Reams <dwr.kj4de@...> wrote:

???It looks like it is conflicting with another port. Below is what I am
seeing on my laptop:


[image: image.png]

[image: image.png]

It appears that it is trying to conflict with Port 3. What is the best

way

to solve the port contradiction?

Again, thanks for your help!!!

David

On Wed, Mar 1, 2023 at 4:36?€?AM robert miles <bob@...> wrote:

Hi David
If you right click on the STM Device in dfu mode and select properties.
Go to update driver.
Browse to the install directory for the STM software ( prob in programs
x86) and press enter.
That should fix it.
Other thing to check is that the com port assigned to the STM USB driver
is correct and not clashing with another in device manager.

Worked for me with W10 on 64 bit machine.

On 1 Mar 2023, at 12:35 am, David Reams <dwr.kj4de@...> wrote:

???I am still unable to get the nanoVNA to assign a port. I have

Windows 10

and the nanoVNA will not automatically assign a port and the program
suggested above does not assign a port. When I place the nanoVNA in DFU
mode it does show "STM Device in DFU Mode". under Universal Serial bus
Controllers. Otherwise it shows "Unknown device" if not in DFU mode. No
port assignment is indicated at all. I might be having a problem with
the nanoVNA equipment itself. When not connected to a PC, the device

works

fine.

Maybe this problem can be solved, but if there is, in fact, a problem

with

the device, no solution would be forthcoming.

Again, thanks for all of your help!!

David
.

On Tue, Feb 28, 2023 at 1:31?€?PM Roger Need via groups.io

<sailtamarack=

[email protected]> wrote:

On Mon, Feb 27, 2023 at 06:33 PM, David Reams wrote:


Can you give me some more information on the STM boot loader and a

source to

download?

David,

There are two different drivers required when using a NanoVNA-H or
NanoVNA-H4. One is required to get a COMxx: port so that your PC can
exchange data with a NanoVNA. The other driver is required when you

want

to do firmware updates on your device.

COM port driver
---------------------

With Windows 10 and Windows 11 the required driver will be installed

by

Windows when you connect your NanoVNA to a USB port. With Windows 7

and

Windows 8 you have to manually install the driver and then plug in

your

NanoVNA. If Windows 10 fails to install the driver (rarely happens)

you

can use the Windows 8 driver. You can check that the driver is

working

by

plugging in and turning on your NanoVNA and then going into Device

Manager

and looking under ports to get the COM port number that has been

assigned

If you power off the NanoVNA the COM port should disappear from Device
Manager. I have put a copy of the drivers on my BOX account for you

to

download. Here is a link where you can download it >>

Unzip and select the 32 or 64 bit version for your computer.

Firmware Upgrade driver
---------------------------------
This driver is only required when you want to upgrade your firmware.

It

does not assign a COM port when the NanoVNA is plugged in and in DFU

mode.

DFU mode is activated in different ways depending on your device and

the

firmware installed. Old devices had to be put in DFU mode by opening

the

case and shorting the Boot0 and DFU pins. In other cases DFU was

accessed

by a Menu selection. DFU mode on the -H4 is activated by depressing

the

rocker switch down and powering on the anoVNA. When in DFU mode the

screen

will be black. You can check that the driver is installed correctly

by

looking under USB controllers and seeing if it shows that your device

is in

DFU mode (see attached screenshot). I have posted a link to the DfuSe
package on my Box account for you. It will install the DFU driver and

the

DfuSe firmware upgrade application.

The Absolute Beginners Guide in the file section of this group tells

you

how to install the DFU drivers that are needed for firmware update and

how

to install the latest firmware.

/g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_6.pdf

You don't have to register to get the DFU program and drivers. I have

put

a copy on my Box account for you...


Roger

<image.png>
<image.png>

On Mar 4, 2023, at 12:39 PM, Roger Need via groups.io <sailtamarack@...> wrote:

?On Sat, Mar 4, 2023 at 09:24 AM, Steve Bowers wrote:

I¡¯m trying but I¡¯m getting some erratic information. I¡¯m sure it¡¯s
user error.

I put a copy of the Absolute Beginner's Guide on my Box account for you to download. Download button in upper right hand corner. Here is the link.


Roger

On Mar 4, 2023, at 12:15 PM, Chris Gardner via groups.io <seaman98@...> wrote:

?No problem, enjoy your H4!

On Mar 4, 2023, at 11:17, Steve Bowers <bowxyz@...> wrote:

?Awesome!! Much obliged!!!

Thanks
Steve

On Mar 4, 2023, at 10:57 AM, Chris Gardner via groups.io <seaman98@...> wrote:

?Greetings, May I suggest that you obtain a copy of this document (Absolute Beginners Guide). I am sure you will find the information there.

Log In ( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )
groups.io ( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )
apple-icon-180x180.png ( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )

( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )
73¡¯²õ

On Mar 4, 2023, at 09:25, bowxyz@... wrote:

? Help. Newly purchased Nano VNA H4 March 2, 2023.

I've read several posts on the H4 model about firmware and each mention
identifying the proper version and the URL that is listed. Mine does not
have a URL listed. Version is 1.1.01 [p:401, IF20k, ADC:384k, Lcd480x320.
Build Time Dec 30, 2021.

I'm sure there are probably newer versions but I am unsure as to the
process to properly update.

Any help would be greatly appreciated.

<apple-icon-180x180.png>

On Mar 4, 2023, at 11:32, Igor - PY3IG <igor.jobim@...> wrote:

?A user has the nanovna H4 with this display defect. Suggestions before switching to a new display?
Igor.





<FB_IMG_1677946840700.jpg>

On Mar 4, 2023, at 11:17, Steve Bowers <bowxyz@...> wrote:

?Awesome!! Much obliged!!!

Thanks
Steve

On Mar 4, 2023, at 10:57 AM, Chris Gardner via groups.io <seaman98@...> wrote:

?Greetings, May I suggest that you obtain a copy of this document (Absolute Beginners Guide). I am sure you will find the information there.

Log In ( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )
groups.io ( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )
apple-icon-180x180.png ( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )

( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )
73¡¯²õ

On Mar 4, 2023, at 09:25, bowxyz@... wrote:

? Help. Newly purchased Nano VNA H4 March 2, 2023.

I've read several posts on the H4 model about firmware and each mention
identifying the proper version and the URL that is listed. Mine does not
have a URL listed. Version is 1.1.01 [p:401, IF20k, ADC:384k, Lcd480x320.
Build Time Dec 30, 2021.

I'm sure there are probably newer versions but I am unsure as to the
process to properly update.

Any help would be greatly appreciated.

<apple-icon-180x180.png>

On Mar 4, 2023, at 10:57 AM, Chris Gardner via groups.io <seaman98@...> wrote:

?Greetings, May I suggest that you obtain a copy of this document (Absolute Beginners Guide). I am sure you will find the information there.

Log In ( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )
groups.io ( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )
apple-icon-180x180.png ( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )

( /g/nanovna-users/files/Absolute%20Beginner%20Guide%20to%20The%20NanoVNA/Absolute_Beginner_Guide_NanoVNA_v1_5.pdf )
73¡¯²õ

On Mar 4, 2023, at 09:25, bowxyz@... wrote:

? Help. Newly purchased Nano VNA H4 March 2, 2023.

I've read several posts on the H4 model about firmware and each mention
identifying the proper version and the URL that is listed. Mine does not
have a URL listed. Version is 1.1.01 [p:401, IF20k, ADC:384k, Lcd480x320.
Build Time Dec 30, 2021.

I'm sure there are probably newer versions but I am unsure as to the
process to properly update.

Any help would be greatly appreciated.

<apple-icon-180x180.png>

On Mar 4, 2023, at 09:25, bowxyz@... wrote:

? Help. Newly purchased Nano VNA H4 March 2, 2023.

I've read several posts on the H4 model about firmware and each mention
identifying the proper version and the URL that is listed. ?Mine does not
have a URL listed. Version is 1.1.01 [p:401, IF20k, ADC:384k, Lcd480x320.
Build Time Dec 30, 2021.

I'm sure there are probably newer versions but I am unsure as to the
process to properly update.

Any help would be greatly appreciated.