Right.
But still reduces the screening
of your chamber from 100 dB or so
to 30...40 and thus may cause problems
with immunity testing.
That brings me to a related subject:
The risks that go with RF energy leaking out.
Well if you are in the middle
of Texas, that may not be such a problem.
Aircraft VOR (vhf omni-range) frequencies are from 108-118 MHz.
Aircraft COMM to tower 116-152 MHz.
Glideslope signal is 329-335 MHz.
Marker Beacon is at 75 MHz.
DME is 960-1215 MHz.
These have been around forever. There may be newer stuff I haven't listed.
Ken Javor
Phone: (256) 650-5261
Hi Gert,
ILS (Instrument Landing System) operates in the VHF band (108-118 MHz).
There is also DME (Distance measuring equipment) which operates in the
960-1215MHz band.
Mvg,
Willem Jan Jong
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Gert
Gremmen
Sent: donderdag 15
Hi again,
Covering comments since I last posted - yes chokes may provide sufficient
attenuation for the purpose - but to confirm this all the possible issues need
to be considered.
With a waveguide beyond cut off, filling the hole with a dielectric
effectively increases the frequency that it
Sorry - errata
where I said filling the hole with a dielectric effectively increases the
frequency that it will pass that should read filling the hole with a
dielectric effectively decreases the frequency that it will pass
regards
Tim
Tim Haynes A1N10
In message
201048ea81ba0745aca78e4cc883900104290...@desmdswms201.des.grplnk.net,
dated Thu, 15 Jan 2009, Haynes, Tim (SELEX GALILEO, UK)
tim.hay...@selexgalileo.com writes:
Strangely, there is a UK Statutory Instrument regarding Suppressed
Radiation which dictates the limits of radiation
Gert:
I don't think you'll find a list of important frequencies . If there were such
a thing it would be like the terrorist handbook on how to bring down an
airliner. I can tell you a lot of EMI immunity goes into every Boeing
airplane.
Fred Townsend
From:
John, All,
The table at the bottom of my early e-mail IS from the Statutory
Instrument - It is THE SCHEDULE referred to in the SI and is published
(in the paper format) along with the SI.
If you are looking at a web version, you should find a link to the
schedule.
John, I will send the HTML
Further to my last e-mail,
http://www.opsi.gov.uk/si/si1989/Uksi_19891842_en_1.htm
Is the Statutory Instrument, at the bottom of which is a link with the
word continue that links to the table at
http://www.opsi.gov.uk/si/si1989/Uksi_19891842_en_2.htm
Regards
Tim
SELEX Sensors and Airborne
In message
201048ea81ba0745aca78e4cc883900104290...@desmdswms201.des.grplnk.net,
dated Thu, 15 Jan 2009, Haynes, Tim (SELEX GALILEO, UK)
tim.hay...@selexgalileo.com writes:
John, I will send the HTML pages that I downloaded from Ofcom under a
plain cover J
Thanks.
--
OOO - Own Opinions
In message 860439.96457...@web83107.mail.mud.yahoo.com, dated Thu, 15
Jan 2009, FRED TOWNSEND ftowns...@sbcglobal.net writes:
I don't think you'll find a list of important frequencies . If there
were such a thing it would be like the terrorist handbook on how to
bring down an airliner. I can
This approach compels good practice; some radiated susceptibility tests
approach oven level at peak power.
Cortland
KA5S
- Original Message -
From: Haynes, Tim (SELEX GALILEO, UK)
mailto:tim.hay...@selexgalileo.com
To: emc-p...@ieee.org
Sent:
Worldwide aviation frequencies are still a matter of public record. The
most critical frequencies that come to mind where you are would be those
used in Instrument Landing System/Glide Slope operation, sometimes linked
to flight controls for fully automatic landings, and those just above 1 GHz
- Original Message -
From: Gert Gremmen g.grem...@cetest.nl
I believe *your* focus should be directed towards:
can my design be used in such amounts that
a considerable amount of otherwise spoiled energy
can be saved, and can a small effort on our companies
side contribute to the
I saw written...
Considering the fact that if device is used in heated location than
reducing its power (active and stand-by) saves no energy I came to:
Let's start from reducing outdoor devices stand-by mode ? ;-)
Piotr Galka
On that basis, we should also consider reducing the power (active
All,
I've seen various implementations of WEEE statements in user manuals.
Some contain 20+ language translations of a short statement regarding how to
recycle your product, while others have just a passing mention in a single
language (I presume the entire manual is translated in this case but
David
There may be a number of reasons for this:-
1. To ensure that the disposal instructions can be understood in the countries
in which the product is marketed.
2. To include different contact details for the compliance schemes that the
manufacturer may belong in each of the different
The implementation of the directive is down to the “producer” within the
individual member state in accordance with member state legislation. Article
10 of the directive is the base requirement
http://www.epeat.net/Docs/EU%20WEEE%20Directive.pdf
Some mfrs whether or not they have legal
Certainly the multi-lingual approach is in line with explicit criteria other
directives and regulations such as RTTE, MD, REACH, CLP where communication to
an end user in a Member State is envisioned.
In WEEE Art 10.4 Member States appear to be given the possibility of laying
down criteria for
And while the Directive applies to household and professional equipment,
Article 10 states in part “Member States shall ensure that users of
electrical and electronic equipment in private households are given the
necessary information…” so does that mean B2B or professional equipment
does not
In message
f51035525f51b14d9b6e90f85793591324ea5...@pysxmb02.dialogic.com, dated
Thu, 15 Jan 2009, Daniel Roman dan.ro...@dialogic.com writes:
And while the Directive applies to household and professional
equipment, Article 10 states in part ?Member States shall ensure that
users of
A business should be cognizant of it’s legal obligation regarding the
disposal of all its waste so yes. For WEEE they may have taken on the
obligation for disposal when they purchased the EEE or they may have retained
the right to take-back by the supplier.
I have a question about the c-tick mark for Australia and New Zealand.
My company’s hardware products are typically racks of IT equipment that are
largely integrations of other companies’ products, i.e., servers, switches,
storage, UPS, etc. We test and apply the c-tick mark on our products on
So that's kind of like design validation by the customer, right? Build
it, ship it, let the customer figure out what works and how? I know a
few companies that work like that, why not the EU Commission?
Scott Douglas
John Woodgate wrote:
In message
In message 496f8d24.5050...@ptcnh.net, dated Thu, 15 Jan 2009, Scott
Douglas sdoug...@ptcnh.net writes:
So that's kind of like design validation by the customer, right? Build
it, ship it, let the customer figure out what works and how? I know a
few companies that work like that, why not the
All,
Does anyone know of a certification standard (e.g., UL, EN) that may exist for
terminal block accessories. I am specifically curious about jumper bars used
to bridge the continuity of adjacent terminals.
I've gotten a few hits on Google related to ATEX considerations, but my focus
is
Have you looked at the -7-x parts of the EN 60947 series of standards
(e.g. EN 60947-7-1)?
Nick.
At 16:12 -0600 15/1/09, lauren_cr...@amat.com wrote:
All,
Does anyone know of a certification standard (e.g., UL, EN) that may
exist for terminal block accessories. I am specifically curious
In message
of578743b6.7a8d8e56-on8625753f.0078b192-8625753f.007a0...@amat.com,
dated Thu, 15 Jan 2009, lauren_cr...@amat.com writes:
Does anyone know of a certification standard (e.g., UL, EN) that may
exist for terminal block accessories. I am specifically curious about
jumper bars used to
Hello Lauren,
These are the likely standards.
ANSI/UL 1059 http://ulstandardsinfonet.ul.com/scopes/scopes.asp?fn=1059.html
, Terminal Blocks
http://ulstandardsinfonet.ul.com/scopes/scopes.asp?fn=1059.html
IEC 60947-7-1 http://ulstandardsinfone
Jim,
Below is part of the exemptions from the new labelling notice.
7 A spare part that has:
(a) identical specifications to the device it is to replace; or
(b) the same radiofrequency emission characteristics as that device
8 A component, except a component that is an assembly of components
Peter,
Excellent! Thanks.
Jim
__
James L. Knighten, Ph.D.
EMC Engineer
Teradata Corporation
17095 Via Del Campo
San Diego, CA 92127
858-485-2537 – phone
858-485-3788 – fax (unattended)
From: peter merguerian
Jim,
I would agree with Peter's advice. Item 7 is the relevant exemption (under
Schedule 2 of the EMC Labelling Notice) providing, as Peter say, it is only
supplied as a spare part for the original equipment.
Best regards,
Kevin Richardson
Stanimore Pty Limited
Compliance Solutions for
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