Hello Ken, thanks for the video. I believe the USB cable of STM32 is merely connected to the oscilloscope as a power source with no data running trough this cable. Isn't it ?
Correct. Whatever common mode currents are generated on the board will flow out along the outside of the cable shield. That's what we measure with the current probe.
Thanks. I have the test equipment and I appreciate your knowledge in applying them.
Hi Ken i am a hobbyiest and i was wondering if i can test EM r/a/t of some materials using a spectrum analyser and how to do so?
Hi Ken, Is there any solution to taking care of these harmonic signals during PCB or Layout designing?
will someone please tell that what should be S parameters for two ports orthogonal measuring near magnetic fild probe for without DUT?
I wonder what is the source of the 270 MHz? This particular board can go to a maximum of 180 MHz only.
It sure seems to be the system clock frequency. Maybe some harmonic of the clock? In any case, it's the dominant harmonic throughout the board...
The 270 MHz may be the third harmonic of the clock. I'll have to investigate further.
@@emc_guru 180 MHz / 2 = 90 MHz. 90 MHz *3 = 270 MHz
Hey how can I measure magnetic field of high frequency with Beehive Electronics 100B EMC Probe?
You can get this information from their web site: beehive-electronics.com/probes.html
Hello Ken, thanks for the video. I believe the USB cable of STM32 is merely connected to the oscilloscope as a power source with no data running trough this cable. Isn't it ?
Correct. Whatever common mode currents are generated on the board will flow out along the outside of the cable shield. That's what we measure with the current probe.