ted.eck...@apcc.com wrote:
Is it permissible to place electrical receptacles under the raised floor of
a computer room? Can power cords pass through openings in the raised floor
or do all power connections need to be in conduit? I have received two
opinions; one stating that receptacles
Fleury, Bill wrote:
Judging from the number of responses (0) I got to my question about EMI
problems from compactPCI backplanes I am assumiong that either no one uses
cPCI backplanes or I'm the only one that has experienced problems when
testing in this environment. I didn't think that ever
Tony:
I have sold these systems and also used them and they are good for graphing
a profile of a scanned board and giving the field intensity vs postion over
the board area. You can quickly find trouble spots using the computer
interface.
Ralph Cameron
- Original Message -
From: Tony
Dear All,
For a unit that transmits and/or recieves data over mains power lines, is
UL1950/IEC950 the correct standard?
Peter Merguerian
Managing Director
Product Testing Division
I.T.L. (Product Testing) Ltd.
Hacharoshet 26, POB 211
Or Yehuda 60251, Israel
Tel: 972-3-5339022 Fax:
Peter,
The Scope (1.1) of IEC 60950 is for mains or battery powered ITE.
If the product is mains/battery powered, then IEC 60950 could apply,
regardless of how it performs it's ITE function. However, there may also
be other applicable standards.
George
-- Forwarded by
Hi Paul,
Try FCC 97-114 Appendix C. It is entitled Guidance on Measurements for
Direct Sequence Spread Spectrum Systems. I think this is what you're
after.
Good Luck!
~
Sam Wismer
RF Approvals Engineer
LXE, Inc.
(770) 447-4224 Ext. 3654
Visit Our Website at:
Wait a minute!
Buying a board scanning system to evaluate different vendors for ferrites
and oscillators? My company doesn't have that kind of money to throw
around. These systems can cost 10's of thousands of dollars. Ferrite
beads cost about a dime for a dump truck load. If it costs
Luiz,
The applicable standards would depend on the product, e.g. whether it is
a laser printer (ITE) with the necessary fuser, or a hair dryer, or a coffee
maker. However, it is my understanding that most products involving heating
devices would require two components, i.e. a temperature
Paul, the DSSS version of the document was published as Appendix C to the
original final rule-making in FCC ET Docket 96-8. EdB
-Original Message-
From: Paul Slavens [mailto:paul_slav...@hotmail.com]
Sent: Wednesday, September 20, 2000 4:22 PM
To: emc-p...@ieee.org
Subject: DSSS
Depends. If the thermal cut out fails, can the product reach unsafe
temperatures? If yes then it is a protective device, if no then it isn't.
A standard that covers thermal cut outs is IEC60730. Thermal links are
covered by IEC60691.
Regards
Chris Colgan
EMC Safety
TAG McLaren Audio Ltd
Chris,
Don't get me wrong. I didn't read the full text of the application and
merely supported the utility of the EMSCAN system.
If you know of sources where you cn get ferrites, specifically ferrite
toroids for a dime a dump truck, I'd be interested. In the past two years my
costs for them
Conformity-Update for the week ending Sept. 15, 2000 is now available
at:
http://www.conformity-update.com
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
To cancel your subscription, send mail
Luiz -
Bimetal switched are used as manual and automatic reset thermal protectors
in electric motors, transformers. Very common and has been for many years.
Regards,
Peter L. Tarver, PE
ptar...@nortelnetworks.com
-Original Message-
From: jim_bac...@mail.monarch.com
Many of the cheap thermal circuit breakers listed under UL 1077
(Supplementary Protectors For Use In Electronic Equipment) are nothing more
than a bimetallic strip. Current is carried through the bimetallic strip
itself. As the current increases, the strip heats up and eventually opens
the
I am doing a graduate research project on the ESD opportunities that exist
in the telecom market, specifically cell phones and laptops that have LCD's
which are affected by ESD. Is this a market to look into, and what are the
requirements and trends that you see going on? What materials or
forwarding for luizboni...@ig.com.br
Reply Separator
Subject:Protection or Control?
Author: Luiz Claudio luizboni...@ig.com.br
List-Post: emc-pstc@listserv.ieee.org
Date: 9/20/00 9:59 PM
I have a question to those who are familiar with the
I know that most safety standards require the equipment to remain safe under
single fault conditions. In this case the single fault I would consider would be
that of failure of the thermostat (i.e short circuited)
The first thing to consider would be, can the failure of this device allow the
I recently completed a Brazilian compliance effort on a telecom device.
It was handled via a consultant with expertise in South American regulatory
requirements.
I was required to supply copies of existing test reports ( Part 68, Part 15,
applicable CTRs, and CB Scheme), electronic photos,
Ted's note said:
In addition, UL 1950 section 1.7.13 refers to thermostats. The standard
allows the thermostat to limit temperature, but they should not be used for
other purposes.
Actually, section 1.7.13 pertains only to marking and instructions related
to adjustable thermostats. It does
Hello:
RE:Susceptibility of USB ports to Industrial Environment test levels.
Does anyone have experience to the susceptibility of commercially available
PC's and mother boards at the industrial test levels?
For example RS232 and USB ports with the 1000 V EFT, 10V/M RF radiated, and 10V
RF
forwarding for ncc1...@nccrc.com
Reply Separator
Subject:FW: RE: Brazilian requirements
Author: Net Connection Corp ncc1...@nccrc.com
List-Post: emc-pstc@listserv.ieee.org
Date: 9/21/00 9:19 AM
TO: John Radomski
Product Compliance Engineer
Hello All..
Does anyone have a URL for the IRAM homepage .. in English ??
Thanks,
George
Hi George,
There is a link on the Safety Link (to IRAM). However, I expect there is
no English language link. When you are in Argentina - speak Argentine ;-)
An alternative:
Try AltaVista's translator at: babelfish.altavista.com and point it at
IRAM's URLs. The translation, although not
Yes prA14 did pass I have been reliably informed.
It will be interesting to see when it is going to be published in the OJEC.
John Cronin
From: wo...@sensormatic.com
Reply-To: wo...@sensormatic.com
To: emc-p...@majordomo.ieee.org
Subject: RE: A14 to EN61000-3-2 Did it pass?
Date: Mon, 18
George,
Their web site is :
www.iram.com.ar
Thanks
Kevin
--- George Sparacino
george.sparac...@bostonacoustics.com wrote:
Hello All..
Does anyone have a URL for the IRAM homepage .. in
English ??
Thanks,
George
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