Re: Typed 0000 in the 'internals' menu and now the tinySA ultra freezes immediately after boot
Are you running the latest FW?
The only thing left is to load a very old FW (maybe the oldest Ultra FW you can find) and then load the latest FW. THis will force a reset of any preset and config data saved.
--
Designer of the tinySA
For more info go to
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Re: Typed 0000 in the 'internals' menu and now the tinySA ultra freezes immediately after boot
Level indicators did not turn red. I have tried this maneuver many times over the last couple of days and the behavior is as stated above in every case
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Re: #tinysa #ultra Leveling TinySA Ultra with damaged LNA
#tinysa
#ultra
Yes
--
Designer of the tinySA
For more info go to
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Re: #tinysa #ultra Leveling TinySA Ultra with damaged LNA
#tinysa
#ultra
Thanks! So, if i am geting around -35.6dBm from CAL output - i should be good to go?
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Re: #tinysa #ultra Leveling TinySA Ultra with damaged LNA
#tinysa
#ultra
It is impossible to complete the detailed calibration process without an functional LNA as it is used in various places
However you can do a simple level calibration that should be sufficient for the 0-800 Mhz range using CONFIG/MORE/LEVEL CORRECTION/INPUT LEVEL
--
Designer of the tinySA
For more info go to
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Re: #tinysa #ultra Leveling TinySA Ultra with damaged LNA
#tinysa
#ultra
Leveling process enables it in some steps. To, well, level it. 30 §Ñ§á§â§Ö§Ý§ñ 2025 §Ô. 10:07:26 GMT+08:00, "Hugen via groups.io" <hugen@...> §á§Ú§ê§Ö§ä:
You just need to turn off LNA in the menu.
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Re: #tinysa #ultra Leveling TinySA Ultra with damaged LNA
#tinysa
#ultra
You just need to turn off LNA in the menu.
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Re: Typed 0000 in the 'internals' menu and now the tinySA ultra freezes immediately after boot
Did the level indicators turn red?
--
Designer of the tinySA
For more info go to
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Re: Typed 0000 in the 'internals' menu and now the tinySA ultra freezes immediately after boot
Sorry, forgot to mention that was the first thing i tried. Result: system boot, scroll frequency top left screen until reach max or min. Upon slider release,? freezes immediately
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Re: Typed 0000 in the 'internals' menu and now the tinySA ultra freezes immediately after boot
Pressing the jog wheel to the side while restarting should work.
After starting this way the level indicators at the top and bottom left side of the screen should be in red font. If this is not the case the pressing to the side was not recognized
--
Designer of the tinySA
For more info go to
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Typed 0000 in the 'internals' menu and now the tinySA ultra freezes immediately after boot
backstory: was trying to unlock a new tinySA ultra to go above 800mhz.? I forgot the menu location and code but figured i'd give it a try.? found 'expert config -> internals' menu and typed in 0000 as a guess.? after that the unit was frozen.? power cycle, system boots then immediately freezes.? if i hold the slider left or right while booting, the unit will scroll frequencies until the slider is released then immediately freezes.??
?
I have tried to no avail:
flashing new and old firmwares.??
reset via tinysa app (windows)?
open and unplug battery then retry.?
?
any ideas?
?
thanks
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Re: How to apply frequency-dependent Antenna Factor
On Fri, Apr 25, 2025 at 12:13 AM, Mihai wrote:
Is this useful and/or correct?
If so, it means that a measurement in dBuV can be used directly in a formula with AF (in dB/m) and formula is an addition, not a subtraction
? ?The technote is correct.? The antenna factor is added to the measured level to convert from dBuV to dBuV/m or V to V/m.
?
Assuming LNA is disabled in TinySA, preamp gain is 0 dB?
?
? ?Preamplifier gain refers to an external preamplifier.? The LNA is internal to the TinySA and its gain is automatically corrected for, so it is not a factor in the formula. Most likely you will need to enable the LNA or use an external preamplifier to lower your noise floor below whatever regulatory limit you are using.
? ?To correct for all factors in the above formula, create a compound table that includes antenna factor, cable loss and external preamplifier gain.
I one wants to convert from dBuV/m to V/m, there are formulas:
? ?No need to convert. Choose LEVEL:UNIT:Vrms and enter your compound table for the TinySA to display measured levels in V/m. Choose LEVEL:UNIT:dBuV and enter your compound table to display measured levels in dBuV/m instead.
?
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Re: How to apply frequency-dependent Antenna Factor
Is this useful and/or correct?
If so, it means that a measurement in dBuV can be used directly in a formula with AF (in dB/m) and formula is an addition, not a subtraction
Assuming LNA is disabled in TinySA, preamp gain is 0 dB?
?
?
?
I one wants to convert from dBuV/m to V/m, there are formulas:
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Re: How to apply frequency-dependent Antenna Factor
Have any of you managed to use the TABLE TRACE with AF values?
I have my antenna's AF table/graph, but the unit is dB/m (Attenuation Coefficient)
dB/m (meter), not like dBm (decibels per milliwatt)
?
I see that TABLE TRACE expects a table of fixed measurements (with linear interpolation) in the selected unit of measurement (under LEVEL menu) and shows a curve
I believe that the SUBTRACT option is useful if TABLE TRACE is computed for the same unit of measurement...
Is it ok to fill the TABLE TRACE with dB/m values as if they are in dBm? It seems strange to me...
What are the formulas to go from signal power (dBm) to electric field (V/m) or power density (W/m2), including the AF values?
Please help!
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#tinysa #ultra Leveling TinySA Ultra with damaged LNA
#tinysa
#ultra
I?damaged?my?LNA,?and?now?can't?finish?leveling?process.?Is?there?any
way?to?bypass?LNA-related?stuff,?while?i?am?waiting?for?IC's?to?arrive?
Maybe?desoldering?it?and?bypassing?would?be?benificial?
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On Thu, Apr 24, 2025 at 12:11 AM, R. Maris wrote:
Suggested addition (when the suggestion is right): switch off LNA before, because the attenuator is not active when LNA is selected.
Done
--
Designer of the tinySA
For more info go to
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Please add something to the following sentence in the fault finding page:
> If all above tests are OK, set the internal attenuation to 2, 4, 8 and 16 dB (see picture below). Suggested addition (when the suggestion is right): switch off LNA before, because the attenuator is not active when LNA is selected.
BTW: in my case, only the LNA was defective. Unsoldering such an IC is very easy using two soldering irons.
On Fri, 28 Feb 2025 14:59:02 +0100, R. Maris via groups.io <spin.in.het@...> wrote:
Yesterday I have executed the steps on this page. The hint regarding the 0 Hz vertical line is especially helpful. In my case, this vertical line is present, and as such, no complex repair is to being expected. The attenuation function is okay. LNA is clearly defect and because the test signal shows only -55 dBm on the spectrum, the switch should be defective, too. Thus I'd have to replace the switch and the LNA, not the attenuator.
Section Fault finding with oscilloscope: I don't find L1 and L7 (HW 0.4.5.1).
BTW: I now believe what "LOW OUTPUT" on top of the screen means: the bottom connector, not something like low level voltage.
In general I se need to implement any changes to this page.
Rob
On Wed, 26 Feb 2025 13:47:28 +0100, Erik Kaashoek via groups.io <erik@...> wrote:
I've added a page to the wiki describing some steps for manual fault finding.
Could some of the users that have (had) problems with their HW have a look at this page and check if it helps them locating the probable faulty component(s)
?
--
Designer of the tinySA
For more info go to
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Re: TinySA Ultra doesn't go to menu pressing jog
Hi,
problem solved cleaning the flat cable from screen to PCB and
moving battery back to right side, in order it doesn't touch the
flat cable when closing the box.
I hope it will work for years.
Bye,
Maurizio
?
Il 21/04/2025 18:18, Maurizio ha
scritto:
toggle quoted message
Show quoted text
I updated firmware to latest release today and everything was
fine.
I was in config menu and I connected with the supplied cable
RF and CAL connectors, to perform a selftest.
As soon as I did it the yellow trace disappeared and pressing
the jog is doing nothing: no menu on the right
?
I am able to put system in DFU and tried to program again
formware 3-4 times. Everything seems ok but as soon as I switch
on TinySA Ultra as usual, non measure line is displayed and
pressing or sliding jog does nothing.
?
I opened the case and plugged off the battery but no way.
?
Any other suggestion?
?
Many thanks,
?
?
Maurizio I2NOY
?
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TinySA Ultra doesn't go to menu pressing jog
I updated firmware to latest release today and everything was fine.
I was in config menu and I connected with the supplied cable RF and CAL connectors, to perform a selftest.
As soon as I did it the yellow trace disappeared and pressing the jog is doing nothing: no menu on the right
?
I am able to put system in DFU and tried to program again formware 3-4 times. Everything seems ok but as soon as I switch on TinySA Ultra as usual, non measure line is displayed and pressing or sliding jog does nothing.
?
I opened the case and plugged off the battery but no way.
?
Any other suggestion?
?
Many thanks,
?
?
Maurizio I2NOY
?
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Hi everyone and thanks for all your suggestions and contributions.
Sadly NOT the battery as I have a strict regime of checking the LiPo's in all my 'gadgets' there are so many..lol!
RF Explorers, Nano VNA's, RF-8000, plus many handy-talkies...phew.
I took another look at the TinySA's flexi-pcb connector and whilst there didn't seem any sideways 'play' in the mating of the ribbon cable, after several attempts (clamping with a left side bias and then a right side bias) I have managed
to get the beast to come back to life.
So as Erik and others have suggested my device may have a problem with the flexi-pcb connector alignment, though there is nothing obvious! (even under my SMT microscope!)
I have ascertained that my instrument was supplied by Zeenko (as recommended by Erik) and I am now in contact with my UK supplier to resolve this issue.
I have no idea how many genuine Tiny SA's have been sold around the world and guess I have just been unlucky in getting one that has developed such a weird fault?
Thanks once again everyone, it's great to have such a helpful resource :-)
Happy Easter everyone.....
Dave
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Maurizio