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#bug_report CSV save with dBuV #bug_report

 

Hi everyone,

I'm encountering an issue when trying to save and later recall a spectrum acquired in dBuV using the TinySA Ultra.

Although I configure the TinySA Ultra to use dBuV as the measurement unit and the exported CSV files correctly display frequency and dBuV values (even if units are not reported in the csv, the values are coherent), the device misinterprets the loaded CSV data as dBm by default. This results in incorrect and out-of-range dBuV readings upon loading.

Is there a way to instruct the TinySA Ultra to interpret the CSV file's amplitude values based on the current unit setting (dBuV) instead of assuming the data was exported in dBm?

For reference, I'm using the latest firmware available for the TinySA Ultra.

Thank you for your assistance!

Best regards,
 

There is currently no solution to this problem.
Will need to find so time for this....
--
Designer of the tinySA
For more info go to

 

Got to agree on no solution ?
dBuV has long been the most inconsistent, confused, annoying and useless metric in RF Tech?
 

On Tue, Jan 21, 2025 at 09:49 AM, Bruce Akhurst wrote:
dBuV has long been the most inconsistent, confused, annoying and useless metric in RF Tech?
That may be true in your experience, but for both military and commercial compliance testing, dBuV/m for radiated measurements and dBuV for conducted measurements are the standard units.
?
Herb
 

dBuV has long been the most inconsistent, confused, annoying and useless metric in RF Tech
That may be true in your experience, but for both military and commercial compliance testing, dBuV/m
for radiated measurements and dBuV for conducted measurements are the standard units.

dBuV is fine and well defined, it is dBu (ie without the V) that is confusing and inconsistent.

Jeff
 

Yes, dBuV i and dBuV/m is a standard for EMC like EN55032 used for multimedia devices.

?

At 50 Ohms, there is an offset of 107, which suggests it may be relatively straightforward to manage.

Additionally, simplifying the process by including units of measurement (e.g., MHz, dBμV) in the first line of the CSV file can enable the system to automatically recognize the data upon future reloads.

Omitting units from the CSV may cause issues, particularly if the file name does not clearly reflect its contents.

The TinySA is an impressive product, but with a few adjustments, it could reach an even higher level of excellence.

My 2 cents

NH
 

Jeff? So would you take a request for (e.g.) a 0dBuV level signal to be referring to the generator EMF setting or the terminated PD ?

Tip? Correct answer is its differently defined in Japan to USA and Europe is forced to clarify

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