Two differences that come to mind are - UL has power line cross tests not in EN.
UL protective earthing resistance tests for two minutes, EN one minute. Others?
David Gelfand
Regulatory Approvals
Memotec Communications Inc.
Montreal Canada
---
This
Peter,
The only widely used, potentially unsafe cabling for 802.x is shielded
twisted pair (STP) --- sorry, Europeans.
Since STP shield termination is undefined in 802.x; there is no prohibition
against connecting two pieces of Class 2 equipment, potentially connecting
dissimilar earth
Correction:
The Biconical antenna is a Tensor model 4104
not EMCO. Tensor changed it's name to EMCO.
This Bicon is same as EMCO 3104 and I do have
factory manual with antenna factors. No recent
calibration has been done.
---
This message is from the IEEE
Paul,
A STA is a Special Temporary Authorization issued by the FCC in accordance
with 47 CFR Part 5, ยง5.56.
It is only good for 6 months and can renewed once. You can apply for a STA
by going to the FCC website
https://gullfoss2.fcc.gov/prod/oet/index_els.html .
Regards,
Lou Guerin
Littlefeet,
Peter -
1) Agreed. Keep in mind that IEEE 802.3 compliant signals
are unearthed SELV and how SELV is derived in the power
source was not specified.
2) There are potential problems, but this is not to say
insurmountable. I doubt, however, that LAN cable meeting
Reinforced insulation
Amund -
For the most part, installation code issues, component
standard issues, power cross (overvoltage) testing and a
number of other items sprinkled throughout the standard.
You will need to buy a copy of the standard to get the full
picture. It is not simple enough to place in an e-mail.
An STA is basically a permit for operation not normally allowed a license
holder. However, RF immunity testing covers so many frequencies, at such
power, that unless the nearest town is over the horizon, and you have
jungle canopy overhead to absorb RF and keep from jamming satellites, I
think it
Paul:
STA stands for Special Temporary Authorization.
In my experience, it is a process for getting short-term (up to 6 month) FCC
authorization to operate a radio transmitter under either unusual
conditions, or conditions for which you don't have a currently valid
license.
For instance, I've
This month's Approval magazine has an article by Gary Davis of
Clare Instruments on EN50191 (March 2001) which apparently
covers safe electrical testing of products: equipment - methods -
procedures - competency etc. The legal clout with regard to
compliance in the UK will come from the
My company has a standard process for the reporting and follow up of alleged
safety incidents concerning our products. We are now attempting to create a
standard format for the final report to ensure that all of the necessary
aspects of the investigation are complete and adequately documented
Dear Folks,
It was recently suggested that an STA be on file with the FCC so that a
scan test can be done outside a screen room ?
Does anyone have any details on this STA process and who to contact to
complete this STA application.
Best Regards,Paul J Smith
--- David Gelfand gelf...@memotec.com wrote:
What directive covers this?
http://www.elderly.com/vintage/items/images/40U/40U-2712_headstock-back.jpg
David
I wonder if you could craft an Antiques Directive, or would that be a
logical anachronism?
Regards,
Ed
Peter, you can find these documents on line at
http://strategis.ic.gc.ca/sc_mrksv/spectrum/engdoc/spect1.html
http://strategis.ic.gc.ca/sc_mrksv/spectrum/engdoc/spect1.html
Perform a search on RSS to find the documents.
Richard Woods
--
From: Peter Merguerian
Amund,
I am going to be simplistic here (excuse me if I left something out)
.. . . primarily the differences are with mains voltage rating and the tests
that are involved (if you have 'universal input' they will test the
product - like temperature testing- at various input voltages) and national
It's an electric guitar, so I guess the CE mark will be there for the
EMC directive.
Rgds
Nick.
At 14:50 -0700 18/4/2001, Hans Mellberg wrote:
Toy Directive is my guess!!!
Hans
--- David Gelfand gelf...@memotec.com wrote:
What directive covers this?
Amund,
Major Differences are:
1. Overvoltage Test on TNV-1 and TNV-3 interfaces.
2. Components must meet US/Canadian component requirements.
3. Equipment (mainly permanently connected equipment) must meet the US
National Electrical Code and Canadian Electrical Code requirements.
4.
Dear All,
Can anyone identify what RSS139 and RSS210 standards stand for? It looks
like Canadian requirements for receiving and transmitting equipment. If so,
what are the equivalent FCC or other standards?
Thank you.
PETER S. MERGUERIAN
Technical Director
I.T.L. (Product Testing) Ltd.
26
Safety folks,
What are the major differences between UL1950 and EN60950 ?
Best regards
Amund Westin, Oslo/Norway ... still winter ... 25cm powder this morning...
--
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---
This
Safety folks,
What are the major differences between UL1950 and EN60950 ?
Best regards
Amund Westin, Oslo/Norway ... still winter ... 25cm powder this morning...
--
Get your firstname@lastname email for FREE at http://Nameplanet.com/?su
---
This
Perhaps the connector contains both mains and secondary circuits and does
NOT provide reinforced insulation between those circuits - or maybe not. In
any case the problem surrounding the connector can best be answered by the
engineer at UL who
determined the connector is the reason the output
Hi Gary,
Can you tell me the detail of your product. For EMC it will be ok for IT
product to Hong Kong. However it still have to comply the safety requirement
based on IEC 60950 (unless it operates less then 45V- i.e. extra low
voltage) based on the EMSD regulation for the HK government.
Hi Dave:
the UL report for the PSU, it states that the output is ELV, not SELV,
because of the connector interfacing the modules to the rack.
I don't see how a connector makes the difference
between ELV and SELV.
The terms ELV and SELV imply the energy is
derived from a hazardous
You should probably include the Philippines on the list as well.
I've heard anecdotal stories about people bringing their US appliances
to the Philippines, only to have them burn out when they plugged the
cord into the 216VAC NEMA wall socket.
Apparently, a common solution is to use a step-down
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