RE: Maximum distance for SCART

[Nick Towers]

Hi Keith,

I like the idea of this remote power scheme - much neater than wall warts.
Can you let me know though what are the considerations using Cat5 for
power - eg what is resistance per metre and is resistance of per
plug/socket
connection significant? any inductance/capacitance considerations? Max
current? Max impedance/ internal resistance of source power supply? Do you
use a twisted or split pair or double up pairs so more current can be
handled? Question does not just relate to KAT5, but an indication of what
KAT5 could cope with in terms of max length of CAT5 etc would be useful.
Thanks

Nick

-----Original Message-----
From: Keith Doxey [mailto:<a
href="/group/kat5-users/post?postID=6y1s3QZzQWRbubVnVf5x8B36iQLp1RNa6E15ZlWwncUwG4TKUO8ppmyGEBflI9vSo0hGPD5vWdYHPMg">kat5users@d...</a>]
Sent: 08 December 2001 19:54 PM
To: <a
href="/group/kat5-users/post?postID=Rjxy4ANEuGTbqGEBB0dHWZpFWdrK1H1Uuo0MVXQK8jm2mtjNjdTIVP-jkMhgKWhHI7Ebhg7b4n-BwlnUdqU3Wi4">kat5-users@xxxxxxx</a>
Subject: RE: [KAT5] Maximum distance for SCART


NO !!!

Dont fit a jack to the faceplate. You will have to have a cable to the jack
and it will ONLY be useable for that purpose. By all means feed power from
a
remote power supply, but use CAT5 cable and RJ45.

At "Node 0" you can wire some wall warts to some spare ports on a
patch
panel and patch the power to whichever socket you wish. At the distant end
you get a CAT5 patch cord and cut it in half, fit a suitable 2.1mm DC power
plug to the cut end and plug the two CAT5 cables into the KAT5 module.

Keith

-----Original Message-----
From: andrew_richards_2000 [mailto:<a
href="/group/kat5-users/post?postID=0sFhJEI-PJc9-0cHxqF-54wdMtUqq5w_XGK0lM5HB7GYwxeH7HOQcKV26_DaOnkssdieIoCTo3m8vX7p78bJDBPyStWyjg">andrew.richards@b...</a>]
Sent: 08 December 2001 15:05
To: <a
href="/group/kat5-users/post?postID=Rjxy4ANEuGTbqGEBB0dHWZpFWdrK1H1Uuo0MVXQK8jm2mtjNjdTIVP-jkMhgKWhHI7Ebhg7b4n-BwlnUdqU3Wi4">kat5-users@xxxxxxx</a>
Subject: Re: [KAT5] Maximum distance for SCART


Keith

Hmm, I take your point.

I suppose I don't have a huge problem with an 'external' KAT5 box,
but I do presumably need to provide it with a 12v supply? Rather
than have separate transformers, I can present 12v at the wallplate
via jack plugs or similar, and make up a short lead to take that to
the KAT5 module. I know this results in a dedicated wallplate, but
as you say I would have had that anyway with a SCART socket on my
previous scheme.

Regards

Andrew







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