Faraday cages and cables

Thanks guys - that's been very helpful!


I'd been reading something that was attempting to categorize different types of cables - basically into co-ax, 'unbalanced' (e.g. plain multicore) and 'balanced' (twisted pair) - but things then seemed to get into a bit difficulty when it came to screened twisted pair cables (S/FTP etc). I was wondering if things might be easier to describe if screening and twisting could be described just as techniques for reducing interference that could then be applied in various combinations within a single cable, rather that something that defined the type of the cable overall. A TV Co-ax, a 2-core microphone cable and a 25-core screened cable for the old RS 232 system, being fundamentally the same - just differing in the number of cores. Then in things like S/FTP cables both techniques are applied together. Similarly in the likes of SCART cables where some cores may be protected by screening, but not others.


  - Andy.

Thanks guys - that's been very helpful!


I'd been reading something that was attempting to categorize different types of cables - basically into co-ax, 'unbalanced' (e.g. plain multicore) and 'balanced' (twisted pair) - but things then seemed to get into a bit difficulty when it came to screened twisted pair cables (S/FTP etc). I was wondering if things might be easier to describe if screening and twisting could be described just as techniques for reducing interference that could then be applied in various combinations within a single cable, rather that something that defined the type of the cable overall. A TV Co-ax, a 2-core microphone cable and a 25-core screened cable for the old RS 232 system, being fundamentally the same - just differing in the number of cores. Then in things like S/FTP cables both techniques are applied together. Similarly in the likes of SCART cables where some cores may be protected by screening, but not others.


  - Andy.