¿ªÔÆÌåÓý

Firmware update #tinysa


 

Hi Erik, installed the latest firmware update yesterday. when re calibrating the "hi-input" it turned out that this did not yield the desired result instead of e.g. -34.2 dBm I came to about -10 dBm actual power. The June fw version gave no problems and worked correctly, even after restoring the previous fw version everything worked well again.
It's not a big problem because uncalibrated gives the high input a fairly correct value. Despite that, I think it's worth noting.
73, the Wim PA0WFG


 

Wim,
How did you perform the high input, or did you calibrate the hi output?
--
------------------------------------------
For more info on the tinySA go to https://tinysa.org/wiki/


 

Hi Erik, The high input calibration is done with a nanovna as hf generator at 250 MHz (CW)
the output signal measured with the calibrated low input of the tinySA, that worked well and
the self test too.
Then put the vna signal on the high input. (Uncalibrated I had about 2 dBm margin of error)
After calibrating via the config menu (actual input level),the value turned out to be incorrect.
Every thing was done as your instruction video shows
At the end i loaded the previous fw version (1.3-265) and both inputs could be calibrated well.

Wim


 

Thanks, maybe something went wrong with the latest FW update. Let me check.
--
------------------------------------------
For more info on the tinySA go to https://tinysa.org/wiki/


 

I also noticed this error, even the error is in the adjustment of the LOW input and the HIGH input, but if you inform the calibration level exactly circa times, it will accept the correction in the fifth time.


 

Can you try if the new release solves the problems?
--
------------------------------------------
For more info on the tinySA go to https://tinysa.org/wiki/


 

Hi Erik,
I will test the new FW update later today.
BTW thanks for the nice job you did with this project and
your quick response for every one that had some questions.
73, Wim.


 

Here for me it was perfect. Wonder.
I just noticed that the automatic att of the HIGH channel doesn't seem to work, but it could be a problem with my square wave generator. But the problem I was having when calibrating, has been solved.
Thanks.


 

Hi Erik,
The new FW update is okay as far as I can see.
Calibration goes fine.
Thanks, 73 Wim.


 

My TinySA doesn't do the attenuator test. All other tests pass OK. Older versions work fine.

Bobby/N4AU