Re: help with driver issue for a newbie
Have you looked over in either of the nanovna-V2 forums? I just found this thread there: /g/NanoVNA-V2/topic/win_10_issue/77411380?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,80,77411380
On Monday, August 16, 2021, 12:40:41 p.m. EDT, Ray <boxman@...> wrote:
Hi All,
I am having a frustrating driver issue. It is all the more frustrating because at some point I succeeded in controlling my nanoVNA from various software packages from my laptop, and was all set to study the various options, choose the one most suitable for me, and get to work! But currently, the computer and the nanoVNA do not appear to talk with each other.
I have no idea of which nanoVNA v. 2 variant I have, but please see the attached photo. Under version, it states that the hardware was designed by OwoComm. I purchase it from Ali Express for $62.? I am trying to connect with a relatively recent Lenovo laptop running Windows 10 pro. It just did an update to version 20H2 (today) but I had the same problem before and after the update. I have the following symptoms:
1.? ? ? When I plug in the USB cable, the nanoVNA screen remains active.
2.? ? ? When I plug in or disconnect the USB cable, I get a characteristic dong from the laptop, but I do not observe any difference in the device manager display.
3.? ? ? What appears in the device manager display under ports is "STMicroelectronics Virtual COM port (COM4)" together with the yellow triangular warning icon, whether the nanoVNA is connected regularly, or in DFU mode, or disconnected (see attached screen shot).
4.? ? ? If I right click on this and look at properties, I get
a.? ? ? (general), "The device cannot start (Code 10). The specified request is not a valid operation for the target device
b.? ? ? (driver): driver version 1.4.0.0, driver date 2-Aug-13
c.? ? ? (Events): information: Device ROOT\PORTS\0000 requires further installation
I followed the procedure in Absolute Beginner's Guide to NanoVNA by Martin Svaco, 9A2JK, and in particular tried all of the methods suggested in the TROUBLESHOOTING THE DRIVER INSTALLATION section. Before today's update, I also used CCleaner to clean-up the registry. But all to no avail. I tried updating, uninstalling, reinstalling, the driver etc., but nothing alleviated the above described symptoms.
I would value any and all advice!
73,
Ray 4X1RB
From the home of
Prof. Emeritus Raymond (Reuven) Boxman
School of Electrical Engineering
Tel Aviv University
Cell:? ? ? +972 544 634 217
CEO Clear Wave Ltd.? ? ? ? ? ? ? ? <>
Scientific Writing Courses:? ? ? ? <>
|
help with driver issue for a newbie
Hi All,
I am having a frustrating driver issue. It is all the more frustrating because at some point I succeeded in controlling my nanoVNA from various software packages from my laptop, and was all set to study the various options, choose the one most suitable for me, and get to work! But currently, the computer and the nanoVNA do not appear to talk with each other.
I have no idea of which nanoVNA v. 2 variant I have, but please see the attached photo. Under version, it states that the hardware was designed by OwoComm. I purchase it from Ali Express for $62. I am trying to connect with a relatively recent Lenovo laptop running Windows 10 pro. It just did an update to version 20H2 (today) but I had the same problem before and after the update. I have the following symptoms:
1. When I plug in the USB cable, the nanoVNA screen remains active.
2. When I plug in or disconnect the USB cable, I get a characteristic dong from the laptop, but I do not observe any difference in the device manager display.
3. What appears in the device manager display under ports is "STMicroelectronics Virtual COM port (COM4)" together with the yellow triangular warning icon, whether the nanoVNA is connected regularly, or in DFU mode, or disconnected (see attached screen shot).
4. If I right click on this and look at properties, I get
a. (general), "The device cannot start (Code 10). The specified request is not a valid operation for the target device
b. (driver): driver version 1.4.0.0, driver date 2-Aug-13
c. (Events): information: Device ROOT\PORTS\0000 requires further installation
I followed the procedure in Absolute Beginner's Guide to NanoVNA by Martin Svaco, 9A2JK, and in particular tried all of the methods suggested in the TROUBLESHOOTING THE DRIVER INSTALLATION section. Before today's update, I also used CCleaner to clean-up the registry. But all to no avail. I tried updating, uninstalling, reinstalling, the driver etc., but nothing alleviated the above described symptoms.
I would value any and all advice!
73,
Ray 4X1RB
From the home of
Prof. Emeritus Raymond (Reuven) Boxman
School of Electrical Engineering
Tel Aviv University
Cell: +972 544 634 217
CEO Clear Wave Ltd. <>
Scientific Writing Courses: <>
|
Re: NanoVNA H / H4 / V2 / V2Plus / V2Plus4 firmware v1.0.69
#firmware
Obviously you haven't since the emails keep coming. On Mon, 16 Aug 2021 at 13:15, Knud Jorgen Olsen-Jensen via groups.io <vk2kjj@...> wrote: Stop sending the e-mail to me. I have even left the Group because I could
not stop the mails
CW4EVER
On 16 Aug 2021, at 19:31, Anton <om1aeg@...> wrote:
?Thank you for your reply DiSlord. I looked at both PCBs, 10R resistor for 3.3V I put in position R2 on "LCD" PCB, MOSI signals, MISO, SCLK are
available on H1 connector on "LCD" PCB. The problem will be to get the PB9
(CS) signal out of U303:46, directly from U303 pin, no trace on PCB.
|
See the bottom of each email for the link
toggle quoted message
Show quoted text
On Aug 15, 2021, at 20:10, Knud Jorgen Olsen-Jensen via groups.io <vk2kjj@...> wrote:
?Don¡¯t send me your emails
CW4EVER
On 16 Aug 2021, at 09:15, Charles KC6UFM <kc6ufm@...> wrote:
?Hi, Luciano...
I more or less (in my head) wrote off the "extra" resistance needed to make
the NanoVNA see a flat match as being to a combination of lead
resistance/reactance and operator error.
I think it's safe to assume that the transformer is actually a 49:1 ratio.
Thanks!
On Sun, Aug 15, 2021 at 3:48 PM Luciano Luciano <luciano.wdc@...>
wrote:
Hi Charles,
I get "suspicious" when I see small differences like this i.e. 50 ohm as
in this case. Assuming the black box is lossless, you should measure either
2450 or 2500 ohm if you load the other port (with coax connector, right?)
with 50 ohm... if you measure 2450 then it is a 49:1 transformer as you
correctly guessed in the first place! Of course easier to say (and write)
in theory than to actually do in practice.
Regards,
Luciano
On Sun, Aug 15, 2021, 6:15 PM Charles KC6UFM <kc6ufm@...> wrote:
Hello, All...
I recently had a need to measure an unknown matching transformer. As it
was
in a sealed enclosure with noth but the wire terminal and coax connector
exposed, and I didn't want to damage the enclosure, I pulled out my trusty
NanoVNA.
All I knew about the "black box" was that it was used with a
10-12-15-17-20m EFHW wire antenna. That made me assume it would be
somewhere in the range of a 49:1 ratio.
I pulled out my decade resistance box and dialed in 2450 ohms (50 ohms x
49) and put that between the output wire terminal and ground. I then
connected the NanoVNA to the coax input.
I then played with the decade box until I got a flat response from the
NanoVNA and the needed resistance to get there was 2501 ohms. Technically,
that makes the matching network about 50:1 ratio.
All of this told me what I wanted to know, but I'm wondering if there would
be an easier, more direct way of getting there with the NanoVNA.
I'm good with the idea that I may have just stumbled onto the right answer
in my madness.
Take Care & 73
--
de KC6UFM
Charles
--
de KC6UFM
Charles
|
Re: NanoVNA H / H4 / V2 / V2Plus / V2Plus4 firmware v1.0.69
#firmware
Stop sending the e-mail to me. I have even left the Group because I could not stop the mails You need go /g/nanovna-users/editsub and select No Email for disable receive group messages
|
Re: NanoVNA H / H4 / V2 / V2Plus / V2Plus4 firmware v1.0.69
#firmware
Stop sending the e-mail to me. I have even left the Group because I could not stop the mails
CW4EVER
toggle quoted message
Show quoted text
On 16 Aug 2021, at 19:31, Anton <om1aeg@...> wrote:
?Thank you for your reply DiSlord. I looked at both PCBs, 10R resistor for 3.3V I put in position R2 on "LCD" PCB, MOSI signals, MISO, SCLK are available on H1 connector on "LCD" PCB. The problem will be to get the PB9 (CS) signal out of U303:46, directly from U303 pin, no trace on PCB.
|
Re: Download NanaoVNA Labview
From the NI MAX web site: "NI MAX is only supported on Windows and MacOS, not Linux, and cannot be downloaded by itself. It is included with all NI drivers (NI-VISA, NI-DAQmx etc.) and NI System Configuration."
73, Don N2VGU
|
Re: NanoVNA H / H4 / V2 / V2Plus / V2Plus4 firmware v1.0.69
#firmware
Thank you for your reply DiSlord. I looked at both PCBs, 10R resistor for 3.3V I put in position R2 on "LCD" PCB, MOSI signals, MISO, SCLK are available on H1 connector on "LCD" PCB. The problem will be to get the PB9 (CS) signal out of U303:46, directly from U303 pin, no trace on PCB.
|
Don¡¯t send me your emails
CW4EVER
toggle quoted message
Show quoted text
On 16 Aug 2021, at 10:10, Knud Jorgen Olsen-Jensen via groups.io <vk2kjj@...> wrote:
?Don¡¯t send me your emails
CW4EVER
On 16 Aug 2021, at 09:15, Charles KC6UFM <kc6ufm@...> wrote:
?Hi, Luciano...
I more or less (in my head) wrote off the "extra" resistance needed to make
the NanoVNA see a flat match as being to a combination of lead
resistance/reactance and operator error.
I think it's safe to assume that the transformer is actually a 49:1 ratio.
Thanks!
On Sun, Aug 15, 2021 at 3:48 PM Luciano Luciano <luciano.wdc@...>
wrote:
Hi Charles,
I get "suspicious" when I see small differences like this i.e. 50 ohm as
in this case. Assuming the black box is lossless, you should measure either
2450 or 2500 ohm if you load the other port (with coax connector, right?)
with 50 ohm... if you measure 2450 then it is a 49:1 transformer as you
correctly guessed in the first place! Of course easier to say (and write)
in theory than to actually do in practice.
Regards,
Luciano
On Sun, Aug 15, 2021, 6:15 PM Charles KC6UFM <kc6ufm@...> wrote:
Hello, All...
I recently had a need to measure an unknown matching transformer. As it
was
in a sealed enclosure with noth but the wire terminal and coax connector
exposed, and I didn't want to damage the enclosure, I pulled out my trusty
NanoVNA.
All I knew about the "black box" was that it was used with a
10-12-15-17-20m EFHW wire antenna. That made me assume it would be
somewhere in the range of a 49:1 ratio.
I pulled out my decade resistance box and dialed in 2450 ohms (50 ohms x
49) and put that between the output wire terminal and ground. I then
connected the NanoVNA to the coax input.
I then played with the decade box until I got a flat response from the
NanoVNA and the needed resistance to get there was 2501 ohms. Technically,
that makes the matching network about 50:1 ratio.
All of this told me what I wanted to know, but I'm wondering if there would
be an easier, more direct way of getting there with the NanoVNA.
I'm good with the idea that I may have just stumbled onto the right answer
in my madness.
Take Care & 73
--
de KC6UFM
Charles
--
de KC6UFM
Charles
|
Don¡¯t send me your emails
CW4EVER
toggle quoted message
Show quoted text
On 16 Aug 2021, at 09:15, Charles KC6UFM <kc6ufm@...> wrote:
?Hi, Luciano...
I more or less (in my head) wrote off the "extra" resistance needed to make
the NanoVNA see a flat match as being to a combination of lead
resistance/reactance and operator error.
I think it's safe to assume that the transformer is actually a 49:1 ratio.
Thanks!
On Sun, Aug 15, 2021 at 3:48 PM Luciano Luciano <luciano.wdc@...>
wrote:
Hi Charles,
I get "suspicious" when I see small differences like this i.e. 50 ohm as
in this case. Assuming the black box is lossless, you should measure either
2450 or 2500 ohm if you load the other port (with coax connector, right?)
with 50 ohm... if you measure 2450 then it is a 49:1 transformer as you
correctly guessed in the first place! Of course easier to say (and write)
in theory than to actually do in practice.
Regards,
Luciano
On Sun, Aug 15, 2021, 6:15 PM Charles KC6UFM <kc6ufm@...> wrote:
Hello, All...
I recently had a need to measure an unknown matching transformer. As it was
in a sealed enclosure with noth but the wire terminal and coax connector
exposed, and I didn't want to damage the enclosure, I pulled out my trusty
NanoVNA.
All I knew about the "black box" was that it was used with a
10-12-15-17-20m EFHW wire antenna. That made me assume it would be
somewhere in the range of a 49:1 ratio.
I pulled out my decade resistance box and dialed in 2450 ohms (50 ohms x
49) and put that between the output wire terminal and ground. I then
connected the NanoVNA to the coax input.
I then played with the decade box until I got a flat response from the
NanoVNA and the needed resistance to get there was 2501 ohms. Technically,
that makes the matching network about 50:1 ratio.
All of this told me what I wanted to know, but I'm wondering if there would
be an easier, more direct way of getting there with the NanoVNA.
I'm good with the idea that I may have just stumbled onto the right answer
in my madness.
Take Care & 73
--
de KC6UFM
Charles
--
de KC6UFM
Charles
|
Re: Measuring S11 at input of RF power amplifier - could I calibrate "through" an attenuator?
On Sun, Aug 15, 2021 at 02:21 PM, Jim Lux wrote:
What's the ripple in the measurement from? A reduced SNR would give a
random error, not a periodic one, but maybe it's a manifestation of a
phase bias that is contributing more or less depending on the reflected
phase?
The attenuators affect more than S11 SNR when used in this fashion They are not exactly 50 ohms input/output impedance. Also the calibration errors will probably be greater as the DUT impedance is further away from 50 ohms. Roger Roger
|
Re: download the calibration from the NanoVNA
Don¡¯t send me your emails
CW4EVER
toggle quoted message
Show quoted text
On 16 Aug 2021, at 09:17, DiSlord <dislordlive@...> wrote:
?Need use any console software (like terminal, putty RealTerm)
You receive list of error tetm (used by nanoVna as calibration data)
'data 2' ED - error term directivity
'data 3' ES - error term source match
'data 4' ER - error term refrection tracking
'data 5' ET - error term transmission tracking
'data 6' EX - error term isolation
But NanoVNA Saver Use SOLT calibration data format, so you can`t use this calibration data in it.
|
Re: download the calibration from the NanoVNA
Need use any console software (like terminal, putty RealTerm)
You receive list of error tetm (used by nanoVna as calibration data)
'data 2' ED - error term directivity
'data 3' ES - error term source match
'data 4' ER - error term refrection tracking
'data 5' ET - error term transmission tracking
'data 6' EX - error term isolation
But NanoVNA Saver Use SOLT calibration data format, so you can`t use this calibration data in it.
|
Hi, Luciano... I more or less (in my head) wrote off the "extra" resistance needed to make the NanoVNA see a flat match as being to a combination of lead resistance/reactance and operator error. I think it's safe to assume that the transformer is actually a 49:1 ratio. Thanks! On Sun, Aug 15, 2021 at 3:48 PM Luciano Luciano <luciano.wdc@...> wrote: Hi Charles,
I get "suspicious" when I see small differences like this i.e. 50 ohm as
in this case. Assuming the black box is lossless, you should measure either
2450 or 2500 ohm if you load the other port (with coax connector, right?)
with 50 ohm... if you measure 2450 then it is a 49:1 transformer as you
correctly guessed in the first place! Of course easier to say (and write)
in theory than to actually do in practice.
Regards,
Luciano
On Sun, Aug 15, 2021, 6:15 PM Charles KC6UFM <kc6ufm@...> wrote:
Hello, All...
I recently had a need to measure an unknown matching transformer. As it was
in a sealed enclosure with noth but the wire terminal and coax connector
exposed, and I didn't want to damage the enclosure, I pulled out my trusty
NanoVNA.
All I knew about the "black box" was that it was used with a
10-12-15-17-20m EFHW wire antenna. That made me assume it would be
somewhere in the range of a 49:1 ratio.
I pulled out my decade resistance box and dialed in 2450 ohms (50 ohms x
49) and put that between the output wire terminal and ground. I then
connected the NanoVNA to the coax input.
I then played with the decade box until I got a flat response from the
NanoVNA and the needed resistance to get there was 2501 ohms. Technically,
that makes the matching network about 50:1 ratio.
All of this told me what I wanted to know, but I'm wondering if there would
be an easier, more direct way of getting there with the NanoVNA.
I'm good with the idea that I may have just stumbled onto the right answer
in my madness.
Take Care & 73
--
de KC6UFM
Charles
-- de KC6UFM Charles
|
Hi Charles,
I get "suspicious" when I see small differences like this i.e. 50 ohm as
in this case. Assuming the black box is lossless, you should measure either
2450 or 2500 ohm if you load the other port (with coax connector, right?)
with 50 ohm... if you measure 2450 then it is a 49:1 transformer as you
correctly guessed in the first place! Of course easier to say (and write)
in theory than to actually do in practice.
Regards,
Luciano
toggle quoted message
Show quoted text
On Sun, Aug 15, 2021, 6:15 PM Charles KC6UFM <kc6ufm@...> wrote: Hello, All...
I recently had a need to measure an unknown matching transformer. As it was
in a sealed enclosure with noth but the wire terminal and coax connector
exposed, and I didn't want to damage the enclosure, I pulled out my trusty
NanoVNA.
All I knew about the "black box" was that it was used with a
10-12-15-17-20m EFHW wire antenna. That made me assume it would be
somewhere in the range of a 49:1 ratio.
I pulled out my decade resistance box and dialed in 2450 ohms (50 ohms x
49) and put that between the output wire terminal and ground. I then
connected the NanoVNA to the coax input.
I then played with the decade box until I got a flat response from the
NanoVNA and the needed resistance to get there was 2501 ohms. Technically,
that makes the matching network about 50:1 ratio.
All of this told me what I wanted to know, but I'm wondering if there would
be an easier, more direct way of getting there with the NanoVNA.
I'm good with the idea that I may have just stumbled onto the right answer
in my madness.
Take Care & 73
--
de KC6UFM
Charles
|
Re: download the calibration from the NanoVNA
I do not understand what you mean. Do you mean the nanovna-saver.exe window
(mostly black with some status lines on it: I am not able to do a command
from there)?
Or is there some console within the NanoVNA-Saver window?
Or do I need to start a cmd.exe window and then?
Thanks for any help.
All the best,
Victor
Op zo 15 aug. 2021 om 15:52 schreef DiSlord <dislordlive@...>:
toggle quoted message
Show quoted text
Use console data command
data 2
data 3
....
data 6
|
Re: Download NanaoVNA Labview
I worked for PWA for decades and was the only engineer that used LabVIEW, now all the engineers do. It is very easy to learn (very friendly for EEs) and yes it is expensive. So I am glad to see that there is a free version of the IDE. National Instruments makes a huge profit from the hardware, not software, that it sells. Our department bought over $100, 000 worth of FPGA hardware a while ago. It is used world wide (CERN for one)! Having the commercial version installed on my laptop, now I'm curious just how much the free version can support for the budding developer, ie. can one develop an entire project or just a small VI? Does the version include MAX to experiment and simulate hardware devices instead of having to actually buy one? If this does included MAX, then one can make a project using simulated hardware devices in the Vi, and then simulate the device when running the VI.
wt1v
|
Re: Measuring a 1/4 wave balanced line
#cables
Great! Thanks. Any google search I attempted lead me to the RSGB website, which was a dead end for me. I did realize the forums were right here on groups.io, duh.
|
Hello, All...
I recently had a need to measure an unknown matching transformer. As it was
in a sealed enclosure with noth but the wire terminal and coax connector
exposed, and I didn't want to damage the enclosure, I pulled out my trusty
NanoVNA.
All I knew about the "black box" was that it was used with a
10-12-15-17-20m EFHW wire antenna. That made me assume it would be
somewhere in the range of a 49:1 ratio.
I pulled out my decade resistance box and dialed in 2450 ohms (50 ohms x
49) and put that between the output wire terminal and ground. I then
connected the NanoVNA to the coax input.
I then played with the decade box until I got a flat response from the
NanoVNA and the needed resistance to get there was 2501 ohms. Technically,
that makes the matching network about 50:1 ratio.
All of this told me what I wanted to know, but I'm wondering if there would
be an easier, more direct way of getting there with the NanoVNA.
I'm good with the idea that I may have just stumbled onto the right answer
in my madness.
Take Care & 73
--
de KC6UFM
Charles
|
Re: Measuring a 1/4 wave balanced line
#cables
[image: image.png] This should get you started. Dave - WLEV On Sun, Aug 15, 2021 at 7:40 PM Lou W7HV via groups.io <louandzip= [email protected]> wrote: On Sun, Aug 15, 2021 at 12:26 PM, David Eckhardt wrote:
Owen's posts can also be accessed on the RSGB sites. I subscribe to both
the "antennas" and the "antennas research" sites from RSGB.
Did a quick search for RSGB sites as described but didn't have any luck.
Could you provide a link or more info to help find them?
TNX
-- *Dave - W?LEV* *Just Let Darwin Work*
|
.png)
Donald S Brant Jr
Roger Need
Lou W7HV
