To: pronc...@cisco.com; james_al...@milgo.com
Cc: emc-p...@majordomo.ieee.org
Subject:RE: STP vs FTP Ethernet cables (2)
I guess this 150 ohms is from the combination of the 100 ohm
characteristic impedance and the 50 ohm output form equipment, like
) 846-3720
Fax (954) 846-6282
-Original Message-
From: Paolo Roncone [SMTP:pronc...@cisco.com]
Sent: Friday, September 07, 2001 5:28 AM
To: Meunier, Eric
Cc: emc-p...@majordomo.ieee.org
Subject: RE: STP vs FTP Ethernet cables (2)
Eric,
this 150 ohm story of STP
, 2001 9:04 AM
To: 'Paolo Roncone'
Cc: emc-p...@majordomo.ieee.org
Subject:RE: STP vs FTP Ethernet cables (2)
Paolo: Try this link to Quabbin wire company. It is a product
selector
guide with the types of wire used for different applications
: RE: STP vs FTP Ethernet cables (2)
Paolo: Try this link to Quabbin wire company. It is a product selector
guide with the types of wire used for different applications. All Ethernet
applications are 100 ohm characteristic impedance and only have overall
shields if shielded. Telecom cable (T1
AM
To: Doug McKean
Cc: EMC-PSTC Discussion Group
Subject:Re: STP vs FTP Ethernet cables (2)
Doug,
I re-paste the first part of the definition in IEEE 802.3 (2000):
1.4.249 shielded twisted-pair (STP)cable: An electrically
conducting
I read in !emc-pstc that Meunier, Éric eric.meun...@ca.kontron.com
wrote (in 5009AD9521A8D41198EE00805F85F18F0134036E@SEMBO111) about
'STP vs FTP Ethernet cables (2)', on Thu, 6 Sep 2001:
You may want to check if the FTP cable has a 100 Ohms characteristic
impedance which would make it compatible
I agree with Paolo, the definition refers to a shielded TWISTED-PAIR
cable. Note also that twisted pair is hyphenated. While the definition
might better have been worded to refer to 'one or more TWISTED-PAIRS,
each of which...' rather than 'elements' it is not difficult to argue
that the
Paolo Roncone wrote:
The reason of my inquiry is that we bought samples of STP and
FTP
cat.5 cables for 10bT ethernet applications from different vendors
and to
our surprise we discovered that both STP and FTP types have an
overall (external) shield made of aluminum foil, but no shields on
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