No , you will probably not notice any difference; my experience says
0.5 dB.
Unless the short-circuits impacted the functionality in such a way that
emission dropped also !
Gert Gremmen
From: Amund Westin [mailto:am...@westin-emission.no]
Sent: Wednesday 19 August 2015 11:55
To:
Free movement of goods throughout the EU. ;)
Gert Gremmen
-Original Message-
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Wednesday 19 August 2015 15:08
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Friday night conundrum
In message
Thanks Gert,
The test was carried out on an error free PCB. The shorts came up on the
next PCB production batch.
#Amund
Fra: ce-test, qualified testing bv - Gert Gremmen
[mailto:g.grem...@cetest.nl]
Sendt: 19. august 2015 14:07
Til: Amund Westin am...@westin-emission.no;
John (P)
Back in the office this afternoon...
Interpretation on Tags:
http://ec.europa.eu/enterprise/sectors/rtte/documents/interpretation_en.htm#h2-36
there's a TUV
QAhttp://www.tuv-sud.co.uk/uploads/images/1402569658987086360504/red-webinar-questions-and-answers.pdf
on the RED,,
In message 7a35c33bdc1b47e78c2167cf7c4a4...@sehste15d1be4.hs20.net,
dated Wed, 19 Aug 2015, Charlie Blackham char...@sulisconsultants.com
writes:
A: assume you mean devices similar to those used for RFID; readers
(including terminals, interrogators) and transponders (including tags,
A Declaration of Incorporation is only applicable to the Machinery Directive.
All other CE Marking directives applicable to a product must have a Declaration
of Conformity. I have seen some all in one documents that are titled as
Declarations of Incorporation but have compliance declarations
Hi Amund,
One impact of increasing the via clearance (increasing the anti-pad size) is
that the signals that are routed too close to the via may not have adequate
ground return. This can have Signal Integrity as well as EMI implications. I
would go through the layout to check such signals,
I write a single Declaration of Incorporation and include all applicable
directives, Machinery, EMC, RoHS, etc. The directives want all of the
declarations to be together but if memory serves they also allow individual
declarations to be bundled so you could also have a DoI bundled with a DoC.
Does anyone have experience with John Deere's JDQ 53.3 or JDQ 202? I'm looking
at the magnetic field collapse transient, and don't see a good way to do it.
The damping factor is incredibly low - it is a 450 V pulse at 1 MHz, that has
only dropped to 200 V after 10 us. We've got a CS116
All,I have seen two DoC with one shipment, one for the EMC portion and one for the LVD. Whenâ I asked why, the answer was for administrative purposes. Apparently it was easier for the company to manage changing
EN 61000-3-3:2008 is superseded by EN 61000-3-3:2013. What is the likelihood
a product that passes the 2008 version with wide margin would also pass the
2013 version? Are the differences that great? I'm ordering the 2013 version
to review for myself but would like to know how others are
I am currently evaluating a temperature control meter being powered by 120 Vac
MAINs to 61010-1 2010 edition. Would a 3A 250 Vac relay output be classified
as MAINs or secondary circuit? If one looks at definitions, MAINs circuits
purpose is to power the equipment and the relay circuit is not
In message
7B9D892F88F070469771832D78B3086E2CE57B05@013-BR1MPN1-013.MGDPBI.global.p
vt, dated Wed, 19 Aug 2015, Jim Hulbert jim.hulb...@pb.com writes:
EN 61000-3-3:2008 is superseded by EN 61000-3-3:2013. What is the
likelihood a product that passes the 2008 version with wide margin
would
I am currently evaluating a temperature control meter being powered by 120 Vac
MAINs to 61010-1 2010 edition. Would a 3A 250 Vac relay output be classified
as MAINs or secondary circuit? If one looks at definitions, MAINs circuits
purpose is to power the equipment and the relay circuit is not
Warning : Frivolous comment below:
Of course a shorted pcb will have a wonderful emissions profile!
You were Warned!!
Best Regards
Charles Grasso
Compliance Engineer
Echostar Communications
(w) 303-706-5467
(c) 303-204-2974
(t) 3032042...@vtext.com
(e) charles.gra...@echostar.com
(e2)
Hi Chas and the group,
I have noticed in my measurements that sometimes a signal via will
casuse significant radiated emissions not from the via itself but from
voltage generated between the planes. I have seen this effect at much
lower frequencies than via effects normally, at the resonant
Hello Experts,
I am looking for some clarification/understanding of the new postal
address requirement in the LVD 2014/35/EU.
Article 6 section 6 states: Manufacturers shall indicate on the
electrical equipment their name, registered trade name or registered
trade mark and the postal address
Amund,
Regarding your circuit board failures, were they due to Conductive Anodic
Filament (CAF) Formation from either the spacing of via holes or poorly
drilled holes (dull drill bits)? We may be having the same issue and
increasing the spacing from the drill hole to the inner layer copper as
In message 01d0da65$2272df10$67589d30$@westin-emission.no, dated
Wed, 19 Aug 2015, Amund Westin am...@westin-emission.no writes:
I can hardly see that this change will cause any major impact on the
radiated emission tests.
Do a 'pre-compliance' test and if there is no problem, document
Have previously done some radiated emission tests on a multi-layer PCB with
good results.
Now, all the via holes will change in the next layout revision. That's
because the original PCB had a lot of short-circuits between via holes and
inner layers, due to inaccurate process by the PCB
Hi RF fields can do a lot of interesting things. A few years ago, I jogged up
to the top of a hill near my house where there are a number of broadcast
antennae and other equipment. My MP3 player started to change songs and do
strange things. I suspect I was doing some impromptu radiated
On 8/17/2015 8:14 PM, Ted Eckert wrote:
Article 2, Section 2 (d) exempts the following.
Equipment the inherent nature of the physical characteristics of which is such
that: (i) it is incapable of generating or contributing to electromagnetic emissions
which exceed a level allowing radio and
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