This is an excellent and very readable cable and connector EMC reference
www.emcstandards.co.uk/files/part_2_text_and_graphics_21_may_09.pdf
It covers many of the most important cable and connector EMC design
and construction practices including:
EMC relative effectiveness of various cable shield types
The importance of 360 degree shield bonding to connectors
The importance of 360 degree connector bonding to shielded enclosures
The importance of 12 inch minimum physical separation of cables
carrying low level signals from those carrying high level signals,
for example:
- physical separation of cables carrying low level and very low level signals
*low level digital signals
*very weak signals connected to radio receivers
- from cables connected to high level signal sources and AC power
*coaxial cables connected to radio transmitters
*cables connected to AC power mains
73
Frank
W3LPL
----- Original Message -----
From: "K9YC" <jim@audiosystemsgroup.com>
To: "rfi" <rfi@contesting.com>
Sent: Tuesday, January 16, 2024 2:58:05 PM
Subject: Re: [RFI] USB Cable Shield Resistance was: Re: [N1MM+] open question
about RFI & USB
On 1/16/2024 2:36 PM, Clay Autery wrote:
> IME, range from "not measurable with commonly available equipment/technique
My 40 year old Fluke 8060A will get down below 0.1 Ohms.
The issue is not shield resistance, but rather 1) whether it is a shield
or a wire, 2) the quality of the shield, and 3) where it is connected on
both ends.
73, Jim K9YC
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|