Raspberry Pi 4 EMI measurments

[olo111]

Raspberry Pi 4 with stock power supply, plastic case.

Rpi with 64-bit Yocto running mpd.

Wifi on, BT off, I2S on.

9kHz-30MHz: first pic.

and 30MHz-300MHz: second pic.


Measurements were taken with Rohde Schwartz ESRP-3.


Comments are welcome 🙂

 

[roderickvd]

Very interesting. Anyone have similar measurements of the RPi 3? That could dispell (or affirm) talks of the RPi 4 having higher (audio) noise than the RPi 3.

Did some quick Googling but could not find any graphs.