Hi Paolo,
I worked for a few years in the part of Bell Labs that was involved with
networking cable systems several years ago. I am suspicious of foil
shielded cables as it is difficult to properly terminate the foil shield
(360 degrees). I have had a foil shield crack and split if the cable is
This is a re-post with some corrections plus added some letters that got
lost on the way from the .pdf file.
Sorry for the inconvenience.
Hi all,
anybody out there can explain the difference between FTP (Foiled Twisted
Pair) and STP
Hi all,
anybody out there can explain the difference between FTP (Foiled Twisted
Pair) and STP (Shielded Twisted Pair) cables used for Ethernet links.
In Ethernet standard IEEE 802.3 (2000) I find only a definition of STP
(herebelow in copied and pasted from the standard - page 28):
In a
I read in !emc-pstc that Chris Chileshe chris.chile...@ultronics.co.uk
wrote (in 01c13473.83e6a9e0.chris.chile...@ultronics.co.uk) about 'CE
marking 'e' mark products', on Mon, 3 Sep 2001:
Most of my designs have been engineered for the 'e' mark i.e.
vehicle automotive EMC. This means the front
Hello Group,
Most of my designs have been engineered for the 'e' mark i.e.
vehicle automotive EMC. This means the front end is ISO 7637
(transients) compliant.
I now have a requirement to extend the operating environment to
any 12-30V DC power supply running off mains, in a bid to CE mark
Ron,
The Mains to Applied part isolation (Sub-clause 20.2, category B-a) is
typically achieved by selecting a power-supply that meets IEC 60601-1
requirement. This also helps meet Sub-clause 20.1, category A-a1 A-a2 of
the standard. Most medical grade Power-supplies will meet 4KV isolation,
Dear all,
I belive it should be Vol 43 No: 3.
However, I canot verify this because as of today have not received my copy
via snail-mail in Singapore.
:-(
Tim Foo,
(or just call me 'Tim')
ECE, School of Engineering,
http://www.np.edu.sg/ece/ Tel: + 65 460 6143
Ngee Ann
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