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Subject:RE: T3
Author: Seminsky; George gsemin...@nuera.com
List-Post: emc-pstc@listserv.ieee.org
Date: 2/8/01 7:54 AM
For whatever it is worth, I believe that T3 interfaces do not have to
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Subject:NRTL Listing Field Labeling in Oregon
Author: john_freudenb...@notes.teradyne.com
List-Post: emc-pstc@listserv.ieee.org
Date: 2/8/01 3:13 PM
I thought I'd expand this
Well, to be more clear, the difference between a DS3 interface and a T3
interface is simply that the T3 is intended to be used outside the
building. For example, Cisco Systems here in Austin has a T3 line which
connects us to the backbone provider at the telephone CO, about a mile
away.
When the local UL auditor was last on site, I gave a few comments about the
UL web site, and told them about some incorrect data. Was contacted (same
day) by a UL MIS-type that seemed very interested in my feedback. But, to
date, no action ahas been taken on my comments. Your best chances for
In the USA, most commercial aircraft systems are required to meet
RTCA/DO-160D. Environmental Conditions and Test Procedures for Airborne
Equipment (RTCA = Radio Technical Commission for Aeronautics). Both
emissions and susceptibility are covered in this document.
RTCA's web site:
RE: T3The line interface unit manufacturer (TDK) also says that T3 lines remain
in the building, so it would appear that it is considered SELV rather than TNV
therefore no power cross. Can anyone else back this up? Thanks to all for
your input!
Best regards,
David.
- Original Message
Is is just me, or is anyone else having trouble with UL's on line
point of sale of standards? This is not the place to provide a
detailed critique of the faults inherent in the service, but there
seems to be numerous broken links, no useable contact phone number
for customers from outside
I suggest you get onto your local Chapter of the EMC Society.
They should be bringing good free technical presentations
to you. One more avenue??
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This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Can anyone recommend suppliers that provide good, free seminars at the
manufacturer's site (USA) or long distance by Internet or similar means on
EMC and product safety design and test issues? I am aware of Instrument
Specialties and Schaffner.
Richard Woods
I've been asked to look at the requirements for an intercom system
intended for use in aircraft. The system is wired (i.e. no radio
link) and is self contained although it can also interface to the
flight radio so that the pilot can talk to air traffic control.
I am aware that there is an
Hello Group,
Can anyone suggest a UPS manufacturer/model that can provide 120watts of
continuos power for 4 hours? (approximately 500watts total power.)
Thanks for you help in advance.
Joe
Josiah P. Burch
Compliance Engineer II
Andover Controls Corporation
300 Brickstone Square
Andover,Ma
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Subject:February 2001 Meeting of Santa Clara IEEE EMC Chapter
Author: Neven Pischl npis...@cisco.com
List-Post: emc-pstc@listserv.ieee.org
Date: 2/7/01 5:19 PM
SCV EMC Society Meeting
Emerging standards for europe
Has anyone had any experience with safety approvals to UL 1950 of T3 interfaces
over coaxial cable - are power line cross tests required?
Thanks in advance,
David.
David Gelfand
Regulatory Approvals
Memotec Communications Inc.
Montreal Canada
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This
Greetings group,
Thank you all for your responses, they propmtly led me in the right
direction.
Now I can make myself useful and qualify more product. ;-)
Many thanks,
Jeff Bailey
Compliance Engineering
SST - A Division of Woodhead Canada
Phone: (519) 725 5136 ext. 363
Fax: (519) 725 1515
Hi all
I have been asked about approvals of electronic road signs and traffic
lights in EU. The system is mostly build of CE marked equipment, but I'm
not sure which standards to use for CE approval. Can some one help me ?
Kim Jensen
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