Re: Request for help: can you measure and report the MCU frequency?
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I see the peak at 191.571MHz, so a MCU clock frequency of 47.89275MHz Karl Heinz Kremer
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On Mon, Sep 28, 2020 at 7:51 AM Erik Kaashoek < erik@...> wrote: For an improvement of the modulation I'd like to have some data on the spread of the 48MHz MCU clock
The MCU clock frequency can be measured using these settings.
Reset tinySA
span=4MHz
freq=192MHz
display/calc/aver 16
The small signal somewhere below -90dBm is the 4th harmonic of the MCU clock.
Please post the frequency of this signal divided by 4.
If you do not see an MCU clock spur you can try the 2nd harmonic (96MHz) or 3rd harmonic (144MHz)
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