You are comparing the Ultra with a, in the video, a 2.8 inch tinySA Basic.
The Ultra has at least 4 dB lower noise floor and the basic does 4 times averaging
This explains the difference in noise you see at the bottom of the trace.
?
Below screen capture uses TRACE/CALC/AVER 4
?
?
Compare this to the tinySA Basic with the same input signal
?
?
?
?
?
?
--
Designer of the tinySA
For more info go to
