Is it possible to purchase a TinySA now?. I realize that it could be
preliminary versions, but I think that all traffic in the group is too
much for a very reduced group of beta testers.

Regards,

Ignacio EB4APL


--
El software de antivirus Avast ha analizado este correo electrónico en busca de virus.

Been there, done that

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On 5/19/20 11:25 PM, erik@... wrote:

Everything in tinysa-saver now only uses the tinysa name and (if I did not make any mistakes) you should be able to install it on your system next to having nanonvna-saver.
You can also download the repo and run it directly from the commandline
python tinysa-saver.py

???? Yep, it works now.? Thanks a bunch!? I like being able to get it on the "big screen."? These old eyes don't like that small stuff anymore.? I had to get headband-type magnifier with 5 different lenses to solder some surface mount stuff recently.

Jim,

Everything in tinysa-saver now only uses the tinysa name and (if I did not make any mistakes) you should be able to install it on your system next to having nanonvna-saver.
You can also download the repo and run it directly from the commandline
python tinysa-saver.py

Remember:
- In display setup: close all views except "S21 Gain" and check "enable lines"
- Set tinySA in low or high input mode as tinysa-saver can not do this.
- One sweep contains 290 points and you can set as many segments as you like
- Any manual tinySa setting like attenuation or RBW has to be done on the tinySA itself. Nothing available yet in tinysa-saver. But as these are by default in automatic mode everything should work.
- Make sure you keep the start/stop frequencies in the selected low/high mode range

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I cloned the tinySA repo, then attempted to install just as I had installed NanoVNA-Saver in the past, substituting "tinySA-saver" for "NanoVNA-Saver"? in the command.? It didn't install.? Looking through the files, I see that everything in them is still named NanoVNA-Saver. If I install this, will it uninstall any previously installed versions of NanoVNA-Saver (which, of course, many of us have)?? Does it retain all the original NanoVNA-Saver functions, so that one program now works for both SA and VNA?

A new measurement example is added to demonstrate the dynamic range of the tinySA in measuring harmonics coming from a transmitter

For those using Linux
Multiple segments is now working in tinySA-saver


The tinySA data is in the S21Gain (dB) graph. Suggest to remove all other displayed charts except S21 Gain
Make sure you set the tinySA in high or low input mode before running tinySA-saver
Screen capture works. See "manage"/"screenshot"
Apart from making the data visible I did not do ANYTHING to make it robust

That did it!

Cool, I'll give it a shot.? Thanks, Allison.

I used dfu-util and it worked.? Linux Mint 18.3.

Command line used.
?$ sudo dfu-util? -a 0 -s 0x08000000:leave -D ch.bin

I was going to use the ST software but due to screw up on their end never
got it to down load.

dfu-util is in the? debian/ubunto/mint package system.??
Make sure the cable is valid for data and your groups allow the connection.

Allison
-----------------------------------------
Please post here, direct emails go to a dead letter box.

Has anybody been able to update the firmware from Linux?? I downloaded and installed the software from ST.? I have not been able to get the GUI to run at all.? I am able to connect from the commandline, but when I try to download the firmware to the tinySA, it tells me I must connect first.? I am running Linux Mint 19.3 Cinnamon.? Any help?

The tinySA does a double conversion with a first high IF at 433MHz for its low input IF? range (till 350MHz). Performance is more then sufficient for measuring spectral purity of HF transmitters. The high range, till 960MHz, is not a harmonic mode like nanoVNA but uses a separate direct conversion IQ mixer to a IF of 700kHz. Hence the very different performance.
An experimental tinySA using harmonic modes and SW mirror elimination was able to reach above 4GHz with reduced sensitivity but this is not ready for wide use.
More technical details in the wiki?

My guess would be limitations of the spectral purity of the local oscillator. (I haven't seen the hardware design.)

The two ranges suggest that it works similarly to the NanoVNA: a signal source is being used to generate frequencies up to 320 MHz, and the third harmonic of that source is used for the higher frequency range. Enabling an even higher range to 1.5 GHz would require using the fifth harmonic of the LO or switching to a different LO design.

As those of you have used the original NanoVNA (probably just about everybody here) know, the dynamic range is severely limited on the highest range, the one that extends coverage to 1.5 GHz. That's because you're going way beyond what the Si5351A is intended to do. It is still useful for many applications of a VNA, but a dynamic range of 40dB is too low for most of the things you use a spectrum analyzer for. It's not enough, for example, to use it to detect non-compliance with FCC spectral purity requirements for transmitters. TinySA will not be a lab grade instrument and as such is probably not adequate for full compliance testing; you'll still need verification by a better equipped lab for that. But it can serve as a way of finding non-compliant designs.

Hoping to shed some light on the tinySA possibilities I created a wiki measurement example on IQ balance tuning in a single side band transmitter.

Implemented, see wiki

Herb,

The commands you recognize are the same as the nanoVNA. The returned data per trace is only one number as the power measurement is scalar and not a vector
Next to the nanoVNA level commands there are a number of low level commands. These can be used to scan any amount of points in one scan.

If you enable the tinySA.exe output logging you will see the commands used.

On Mon, May 18, 2020 at 05:28 AM, John P wrote:

.. But wait, there's more! We are slowly but slowly implementing a complete serial command handler that when complete should allow you to do anything that you can do with the touch screen. We are also re-arranging the touch screen menus into a more logical hierarchy and will eventually provide the capability to set everything vis the web interface!

=======================================
? ? I'm uncertain how the help file John posted correlates to the console commands list that Erik provided by sending the "help" console command to the tinySA.

- Herb