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Re: [RFI] tvi by a scart cable

To: Martin Sole <hs0zed@csloxinfo.com>
Subject: Re: [RFI] tvi by a scart cable
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Sun, 27 Feb 2011 09:36:27 -0800
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
On 2/27/2011 8:17 AM, Martin Sole wrote:
> It's a fairly common domestic AV interface cable used in Europe and Asia.
> Though not unknown in the USA its referred to there as an EIA multiport
> connector:
> http://en.wikipedia.org/wiki/SCART

Thanks Martin.  The photo of the cable in this link shows unshielded 
parallel wires. That's two parts of a recipe for disaster. ALL balanced 
cables, and ALL unshielded cables should have a twisted pair for each 
signal circuit.

It is also common for round cables that are expected to be shielded to 
have poor shields. Some of these cables have no shield at all, only a 
conductor to provide a DC path between the two ends.

Kostas -- if you still have that bad cable, perhaps you can cut it open 
and learn what the cable is. Twisted pairs?  Is there a shield?  If so, 
how is the shield constructed?  Braid? Foil? Braid plus foil?  How heavy 
is the braid?

Also, try to measure with an Ohmmeter -- if there is a shield, to what 
pin(s) is it connected?  Study the link above to see what is expected to 
be the pin wiring.

73, Jim K9YC

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