tinySA and noise source

Combining the tinySA with a noise source enables quick measurement of components over a wide frequency range. This is demonstrated using an attenuator and a home made filter
For more info visit tinysa.org/wiki

[@aduedc]

Thanks for posting this clip. I want to use this noise source and TinySA, to find out the self resonant frequency of the capacitors. As you know the real capacitors are RLC circuits, so at resonant they should have minimum attenuation. if you use two SMA on a board with ground and attach the cap in between two SMA center point you should be able to measure the self resonant frequency on tinySA. My setup is going to be noise source, followed by capacitor followed by 30dB attenuation followed by TinySA.

[@ascaniosobrero]

Great indeed. Using the noise source of the NooElec Ham It Up device, I could verify the efficacy of the notch filter from FM broadcasting for SDR devices. It shows -20 dB from 86 to 112 MHz, which means 100 times attenuation. Simple, quick and effective.

[@JohnTarbox]

Thank you for this video. I have a tinySA and a noise source but did not know that it would do normalization.

[@julio3000]

Muy buen vídeo espero verle con más detenimiento por que so se para que usa el generador de ruido

[@M0XYM]

Excellent! Thank you.

[@fabiobig1]

Boa noite Erik, ótimo analizador

[@erikas6874]

Thank you for this great video. I just wonder about something. When you distribute the noise levels using the channel power function, does it really sum up the total noise input power, with respect to noise outside the frequency range of the TinySA? For example, if we have a even distribution of noise from DC to (let's say) 10GHz, isn't it possible to damage the input attenuator even if the sum of channel power tell us that the power is within the limit? Sorry for perhaps asking a stupid question.

[@ErikKaashoek]

Good question. Yes, so you should ensure input power is low enough so you do not need the internal input attenuator

[@sammin5764]

Perfect 👍

[@robertdixon8238]

Excellent! Could you provide a link or part number for the noise source that was used in the video? Thanks. What vesion of the firmware supports the averaging and calibration?

[@ErikKaashoek]

The exact model I have is no longer available, but I guess any of the cased versions will do as long as it goes to 2GHz to ensure it is sufficiently flat. The 1GHz noise sources are much less flat. All recent firmwares do support averaging and normalization

[@robertdixon8238]

@@ErikKaashoek Thanks for the information.

[@tandemkayaker]

Great video as always Erik! When it comes to tinySA Ultra the maximum input power is only 6dBm and that combined with the bigger bandwidth is making this noise power consideration even more important. Now, on the Ultra the upper frequency limit is 800MHz in normal mode and in the Ultra mode it changes to 3GHz but it can be used higher than that. Thus, what frequency band do we have to integrate the noise power over to figure out if the input mixer in the tinySA Ultra will be overloaded or not? 800MHz? 3GHz? Or even higher? Any input in this matter is very much appreciated! Thank you!

[@ErikKaashoek]

Please post questions like these in the support group at groups.io/tinysa This will benefit more people

[@tandemkayaker]

I just posted this question to the tinySA group also.

[@eugengrzondziel1706]

Thank You very much! The explantation is excellent. Have You got printable to-do lists for measuring procedures? I am 70 and my memory is not so good. 73 de DM5GE

[@ErikKaashoek]

Unfortunately no

[@eugengrzondziel1706]

@@ErikKaashoek No problem! thanx for video!

[@ac4nl]

Greetings .. Resolution Bandwidth (RBW) effect on Channel Power Values ? I noticed you used the AUTO RBW setting during your video... Thanks

[@ErikKaashoek]

The power per Hz is summed over the total channel so RBW impact is eliminated