Re: Signal level too low
#ultra
My mistake Input level at -7 dBm should be 280mVpp Input switch seems broken -- For more info on the tinySA go to https://tinysa.org/wiki/
By
Erik Kaashoek
·
#9696
·
|
Re: Signal level too low
#ultra
Also measure either side of R44, close to the mixer -- For more info on the tinySA go to https://tinysa.org/wiki/
By
Erik Kaashoek
·
#9695
·
|
Re: Signal level too low
#ultra
The input switch seems ok Lift the large shield between the two sma connectors Set LEVEL/ATTENTION to zero With same input signal measure the level at either side of C98 -- For more info on the tinySA
By
Erik Kaashoek
·
#9694
·
|
Re: Signal level too low
#ultra
Hello, thank you for the response. At 10MHz@-7dBm output from tinySA, I get the following data: - level indicated by Ultra: -17dBm - input pin ~120mVpp - C58 ~120mVpp - C24 ~100mVpp
By
sigxcpu@...
·
#9693
·
|
Re: Signal level too low
#ultra
Do you have a scope? If yes, can you input a 10MHz signal between -20dBm and 0dBm (such that it is well visible on your scope), you can use the tinySA to generate such a signal Remove carefully the
By
Erik Kaashoek
·
#9692
·
|
Signal level too low
#ultra
Hello, I've got a tinySA Ultra in December 2022 and all was good (tests & calibration at least). I also have a tinySA non-ultra. Yesterday while playing around, I've noticed that the signal level
By
sigxcpu@...
·
#9691
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
John, Thanks for the idea for that inexpensive signal generator. I saw Tony Albus demo one last year, but thought it wouldn't be accurate enough. You'd mentioned getting rid of that 0 ohm resistor.
By
T L
·
#9690
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
Using the 10Mhz cal output and one of the cheap Chinese MAX2870 PLL's sold at the different places (Amazon link only to show the model) modified to accept an external clock of 10Mhz gives me a 5.34Ghz
By
John Cunliffe W7ZQ
·
#9689
·
|
Re: Linux Mint USB
#tinysa
Are you in the dialout group? The error suggests you haven't got permissions to the device... Good Luck! Paul
By
Paul - AI7JR
·
#9688
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
Hi Erik and Kurt Thanks for the more 'manual' level calib. Certainly brings back memories of 'old time...' Will try it (ie.? play with) tomorrow. Be safe???? Joe
By
josephlevy
·
#9687
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
Hi Joe One detail I forgot to mention. In config set repeat to X10 to stabilized the marker level fluctuation Kind regards Kurt Fra: [email protected] <[email protected]> P? vegne af josephlevy via
By
Kurt Poulsen
·
#9686
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
Hi Joe You already got an answer from Eric, as the frequency must be 5.34GHz within 1KHz. However, the predefined harmonic offset is after a firmware update set to 10.5 and is not far away to what is
By
Kurt Poulsen
·
#9685
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
I've updated this page: https://tinysa.org/wiki/pmwiki.php?n=TinySA4.Harmonic to include a manual method to calibrate the harmonic jump in case you have a generator at 5.34GHz with lesser frequency
By
Erik Kaashoek
·
#9684
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
Hi Erik, I missed that one part in the tinysa.org wiki. Thanks. Unfortunately, I don't have an accurate 5.34GHz source. I can work with just the initial calibration and lower frequencies available. I
By
T L
·
#9683
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
Thanks Erik Jeff
By
G8HUL
·
#9682
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
Yes -- For more info on the tinySA go to https://tinysa.org/wiki/
By
Erik Kaashoek
·
#9681
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
Unfortunately it has to be very accurate, within 1 kHz, See https://tinysa.org/wiki/pmwiki.php?n=TinySA4.Harmonic Let me see if there is a possibility to relax this requirement. -- For more info on
By
Erik Kaashoek
·
#9680
·
|
Re: Linux Mint USB
#tinysa
Thanks Martin!
By
Ed Vignati
·
#9679
·
|
Re: "CALIBRATE above 5.34GHz" throws a "Signal level too low or not on frequency" error
#bug_report
Hi Erik. How accurate must? the frequency? be? I inject a 5.3420 (that's what my source steps manages) and abt.-20 dbm, and still get the 'Signal level too low or not on frequency'. TIA??? Joe.
By
josephlevy
·
#9678
·
|
Re: Linux Mint USB
#tinysa
Ed, Just remenber: Linux is really user-friendly. It's just very picky about who its friends are. Martin
By
Ho-Ro
·
#9676
·
|