Re: Step by step instruction on firmware upgrade?
Hi Sergei
I think you'd have a clearer idea if you used the PC software as this can
show you firmware info*. No version number but there is firmware build time
& date, so I think you could at least check if the firmware is changing.
Also the 2 trace aa firmware reportedly uses a larger font to the 4 trace.
*This is from an earlier post of mine:
"Apologies if this has already been suggested but pressing the FW info
button in NanoVNA 1.03 returns information on the Nano's firmware,
including build 'time'.
Might the build timestamp be usable as a way to tell the different versions
apart?
As a starter, my NanoVNA is a 2-trace 900MHz antenna analyser with build
time May 5 2019 - 08:35:00."
Best regards
Mike
73
Mike
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On Sat, 10 Aug 2019, 12:36 Sergei Moissejev, <sergei.mo@...> wrote: Thanks for answers.
I think need to bit clarify the issue which is: post-calibration I do not
see Smith diagram reacts to open/short/load as needed ans as seen on
multiple videos.
I did use BOOT pins and tried 3 last FW files - both aa (2 traces) and ch
(4 traces).
And I thought I'm using wrong firmware or this was not correctly flashed
for these reasons:
- when I power VNA after flashing I still see the same charts selects as
before with the same Start/Stop frequencies
- I also do see the same as before flashing reaction on load change
- Same marker 4 shown ass before flashing at the same position
Which suggests the user data (my settings + calibration details) are not
cleared and this is why I created the post thinking I'm doing something
wrong.
If interface change after flashing firmware is the only indication using
device only (I haven't checked with provided software on PC) that firmware
is actually installed,
then I'm confused with these settings persisted.
And I start thinking this could be just front-end issue which I need to
check with the magnifying glasses.
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Re: Step by step instruction on firmware upgrade?
...And I thought I'm using wrong firmware or this was not correctly flashed for these reasons:
- when I power VNA after flashing I still see the same charts selects as before with the same Start/Stop frequencies
- I also do see the same as before flashing reaction on load change.. Based on May 05, 2019 release notes, I think that nanoVNA_900_AA_20190505.dfu is required >>first<<, to clear user data. Others do not..
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Re: Step by step instruction on firmware upgrade?
Thanks for answers.
I think need to bit clarify the issue which is: post-calibration I do not see Smith diagram reacts to open/short/load as needed ans as seen on multiple videos.
I did use BOOT pins and tried 3 last FW files - both aa (2 traces) and ch (4 traces).
And I thought I'm using wrong firmware or this was not correctly flashed for these reasons:
- when I power VNA after flashing I still see the same charts selects as before with the same Start/Stop frequencies
- I also do see the same as before flashing reaction on load change
- Same marker 4 shown ass before flashing at the same position
Which suggests the user data (my settings + calibration details) are not cleared and this is why I created the post thinking I'm doing something wrong.
If interface change after flashing firmware is the only indication using device only (I haven't checked with provided software on PC) that firmware is actually installed,
then I'm confused with these settings persisted.
And I start thinking this could be just front-end issue which I need to check with the magnifying glasses.
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Re: Step by step instruction on firmware upgrade?
Serge, Have a look a some of my earlier posts with photos of how I soldered a small push switch from a cellphone to the BOOT solder pads on my unit. That way, I can place the unit into flash mode by pressing the switch, applying power and then releasing the switch. Everything you need is in the firmware repository that you'll find in the last 30 posts or so. You'll want the 20190722 or 20190802 version. Do a search for 'drive' and download everything. Look at my DFU post... /g/nanovna-users/message/381
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The only way this software would work is if it supports the very same serial interface command set of the nanoVNA. Look in the files section for the command ref doc
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On Fri, Aug 9, 2019 at 05:49 PM, Mike wrote:
Hello.
Can someone test if nanovna will work with
?
I use it with my old VNA, wonder if I could use with new device.
Thanks, Mike
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Re: Step by step instruction on firmware upgrade?
2 traces is fine. However, to get 4 traces will require a firmware change. The CAL process for 2 traces is no different than 4 traces. Of course you have no S21 measurement, but you may still follow same CAL procedure.
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Hello.
Can someone test if nanovna will work with ?
I use it with my old VNA, wonder if I could use with new device.
Thanks, Mike
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Step by step instruction on firmware upgrade?
Hi.
I got mine from ALI with 2 traces only with no manual and seems the only option to get 4 and then follow correct calbration procedure is to flash new decent firmware.
While I see discussion covered which firmware is good, but there were no instructions on how to you change it.
Can anyone share successful experience please?
Serge / M0TLN
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Re: Some basic load measurements
There are no mixers within the Si5351A. Mixers are SA612A: Some 600MHz energy may be intermodulation aliasing between 300MHz fundamental and 900MHz third harmonic, not just second harmonic by transfer function asymmetry.
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Re: Some basic load measurements
There are no mixers within the Si5351A. Whatever generated is done by fractional synthesis from the crystal clocks. There is another slightly different frequenc output that drive the mixer detectors. This is necessary as there are no antialiasing filters.Sent from my Samsung Galaxy smartphone.
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-------- Original message --------From: Oristo <ormpoa@...> Date: 09/08/2019 19:36 (GMT+01:00) To: [email protected] Subject: Re: [nanovna-users] Some basic load measurements Hi Peter -> Even harmonics are caused by asymmetry, right?? Is that something that can be controlled in this source chip?Yes, indirectly, by changing amplitude of signals into the mixer(dominant distortion contributor).
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Re: AliExpress and NanoVNA supplier get 5 stars
Mine took 3 weeks.?Sent from my Samsung Galaxy smartphone.
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-------- Original message --------From: g1dtf@... Date: 09/08/2019 19:16 (GMT+01:00) To: [email protected] Subject: Re: [nanovna-users] AliExpress and NanoVNA supplier get 5 stars How long did it take Guangyi0016 to ship your order. I have ordered one from them and still waiting for it to be shipped (the supplier is processing your order is the msg on AliExpress).
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Re: Some basic load measurements
Hi Peter - Even harmonics are caused by asymmetry, right? Is that something that can be controlled in this source chip? Yes, indirectly, by changing amplitude of signals into the mixer (dominant distortion contributor).
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Re: AliExpress and NanoVNA supplier get 5 stars
I ordered mine the last week of June.
5 days later, I contacted the seller and asked when they were shipping as I heard nothing at that point.
I got a reply back that they had just shipped it.
A few of us have ordered from that seller and have received the device in North America after about 3 weeks.
YMMV
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On Fri, Aug 9, 2019 at 01:16 PM, <g1dtf@...> wrote:
How long did it take Guangyi0016 to ship your order. I have ordered one from
them and still waiting for it to be shipped (the supplier is processing your
order is the msg on AliExpress).
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Re: AliExpress and NanoVNA supplier get 5 stars
How long did it take Guangyi0016 to ship your order. I have ordered one from them and still waiting for it to be shipped (the supplier is processing your order is the msg on AliExpress).
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Hello,
This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected]
group.
File: NanoVNA Calibration Considerations and Procedure_v1.0.pdf
Uploaded By:
alan victor
Description:
NanoVNA RF Calibration v1.0 pdf
NanoVNA RF Calibration Considerations and Procedure with references and introduction material for new users of the vector network analyzer (VNA).
You can access this file at the URL:
/g/nanovna-users/files/NanoVNA%20Calibration%20Considerations%20and%20Procedure_v1.0.pdf
Cheers,
The Groups.io Team
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Re: NanoVNA software on windows 10 x64?
I've only been using it for a week or so, but no problems on my Win 10 x64 machine (Win ver.1809). Have fun!
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New Touchscreen calibration procedure in Wiki
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NanoVNA Calibration Document
This document was created by Larry Goga. He extended and added excellent material
that began as Message# 233. The document primary objective is to serve as a reference
for new comers to the application of the Vector Network Analyzer (VNA) and assist in the
required calibration process.
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Re: Some basic load measurements
Even harmonics are caused by asymmetry, right? Is that something that can be controlled in this source chip?
Peter
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On Aug 9, 2019, at 7:20 AM, Warren Allgyer <allgyer@...> wrote:
Tuck
While the second harmonic is not used, it is very prominent in the output of the VNA. Please refer to my earlier S/A plot, repeated below. It is approximately the same level as the desired 3rd harmonic which, I admit is unusual.
WA8TOD
<08081.jpg>
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Re: Some basic load measurements
So this is a very busy chart..... apologies but I wanted to try to capture the whole thing in one visual.
There are three different sweeps captured here in peak hold mode. The traces are identified at the top. I chose the ranges so they could be overlayed without covering each other. The first range, 25 - 125 MHz (yellow) is measured at the fundamental with the second and third harmonic resulting ranges clearly visible.
The second range, 425 - 525 MHz (Purple) is stimulated by the fundamental in the 140 MHz range. Note the level of that fundamental is increased with respect to the Range 1 (Yellow) fundamental. Note also that the second harmonic in this case is significantly lower than the second harmonic of Range 1. I am not sure how that is accomplished.
Measurement output for the 725 - 825 MHz range is in Blue with its higher output in the 240 MHz region, also at elevated level and also with the second harmonic attenuated.
Sorry for the complexity but if you stare at this long enough the frequency generation scheme is very clear. The detection scheme..... not so much...... yet!
WA8TOD
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Oristo
Mike
F4WCV
Brent DeWitt
Warren Allgyer
