[RFI] USB Cable Shield Resistance was: Re: [N1MM+] open question about RFI & USB

[Clay Autery]

IME, range from "not measurable with commonly available 
equipment/technique to < 1 Ohm @ 5vdc nom.

Clay E. Autery, Jr.
KY5G

On 1/16/2024 8:32 AM, Pete Smith N4ZR wrote:
> Interestingly, I just tested the shielding on a USB A to USB C cable I 
> have, which looked like it should be fine, with a transparent jacket 
> over woven shielding and a big ferrite bead - about 1 meter long, and 
> measured 2.7 ohms - not good.  What should be consider to be the upper 
> permissible shield resistance?
>
> Moving this issue to the RFI reflector now...
>
> 73, Pete N4ZR
>
> On 1/16/2024 5:01 AM, Janez Majdic via groups.io wrote:
>> Maybe also good to read:
>> https://www.yoctopuce.com/EN/article/usb-cables-shielding-matters-as-well 
>>
>>
>> Regards, Janez - S51J
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