Bluetooth power levels
The transmitter powers for Bluetooth are quite low, although there are three
different classes of output dependent upon the anticipated use and the range
required.
Power Class 1 is designed for long range communications up to about 100m
devices, and this has a maximum outp
testing at 50 mT.
-Original Message-
From: McCallum, Andy [mailto:andy.mccal...@mottmac.com]
Sent: 06 July 2018 10:27
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] EN62311 - Human Exposure to Electromagnetic Fields
Hi Bernd
It’s a mess but at this time no one seems to want to address
-Original Message-
From: Dürrer Bernd [mailto:bernd.duer...@wilo.com]
Sent: 06 July 2018 09:53
To: McCallum, Andy ; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: AW: [PSES] EN62311 - Human Exposure to Electromagnetic Fields
Hello Andy,
Thank you for pointing out the ICNIRP limits: Actually, I recently
nder the LVD.
Michael.
From: McCallum, Andy [mailto:andy.mccal...@mottmac.com]
Sent: 05 July 2018 15:33
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: Re: [PSES] EN62311 - Human Exposure to Electromagnetic Fields
Be surprised if any LVD could cause EMF larg
Be surprised if any LVD could cause EMF large enough to pose a danger to Human
Health. Intentional transmitters maybe, a rare beast to create those levels
unintentionally at less than 1000V.
Andy
From: John Woodgate [mailto:j...@woodjohn.uk]
Sent: 05 July 2018 10:28
To: EMC-PSTC@LISTSERV.IEEE.O
See Keith Armstrongs many papers on this for example:
https://www.emcstandards.co.uk/files/design_techniques_for_emc_1999_part_2_cables_and_connectors.pdf
Andy
From: Ken Javor [mailto:ken.ja...@emccompliance.com]
Sent: 13 June 2018 15:01
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Automot
The manufacturer needs to consider which environment they are targeting. BS EN
50121-4 for the railways has some particularly harsh immunity requirements
which exceed the standard heavy industrial immunity requirement in EN 61000.
From: John Woodgate [mailto:j...@woodjohn.uk]
Sent: 24 May 2018 2
Anyone have any experience of this standard? Do any lighting systems get close
to the ICNIRP limits?
Any thoughts welcome
Andy
-
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussion list. To post
John
There are a number of volumesof ITU Directives concerning the protection of
telecommunications lines against harmful effects from electric power and
electrified railway lines. I think volume 3 might be most useful but its some
time since I looked at these. The maths is very involved.
“htt
John
TC 106 is for human exposure I was thinking of EMC issues - seems a gap here.
Andy
-Original Message-
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: 03 April 2017 09:45
To: McCallum, Andy ; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] Active Implantable Medical
Hi
Just had a brief scan of the standard and it doesn’t appear to cover immunity
to DC Magnetic fields. I would have thought that many patients fitted with
these devices would be having on going medical treatment such that they may
require MRI scans, where they could be subject to magnetic fiel
More testing
-
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussion list. To post a message to the list, send your e-mail to
All emc-pstc postings are archived and searchable on the web at:
http://
Email test
-
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussion list. To post a message to the list, send your e-mail to
All emc-pstc postings are archived and searchable on the web at:
http://ww
Testing
-
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussion list. To post a message to the list, send your e-mail to
All emc-pstc postings are archived and searchable on the web at:
http://www.i
Testing email setting
-
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussion list. To post a message to the list, send your e-mail to
All emc-pstc postings are archived and searchable on the web at
Hi
Should all DoC be updated now to reflect the new EMC directive? The Blue Guide
in section 2.10 suggests DoC for old directive are still valid but then goes on
to say:
“As of their entry into force, the EU Declaration of conformity will need to
include the reference to the new Directives for
Grace
No a compliant report should not be issued.
You will need to investigate the problem with the DC motor and resolve the
issue.
Regards
Andy
From: Grace Lin [mailto:graceli...@gmail.com]
Sent: 22 November 2016 14:46
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Incidental Radiators per F
John I think the American secret service have enough work to cope with!
From: John Allen [mailto:john_e_al...@blueyonder.co.uk]
Sent: 08 November 2016 11:11
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Automated vehicles.
Mike
That’s an “interesting” concept: maybe one could also do the op
Does anything have to change for the introduction of these systems? Just leave
all responsibility to the human driver. For routine driving the automatic
system should reduce accidents and in exceptional circumstances the driver has
to choose what to do. The driver is responsible all the time.
Th
Most (well a lot) railway signalling is now software controlled. The first
Solid State Interlocking (SSI) was introduced in the UK in the 1980's. Its
widely used around the world.
Andy
-Original Message-
From: Nick Williams [mailto:nick.willi...@conformance.co.uk]
Sent: 05 August 2016
Hi
The old EMC Directive 2002/108/EC was brought into UK law by the Statutory
Instruments (SI) 2006 No. 3418. As of the 16 April the New EMC Directive
2014/30/EU replaced 2002/108/EC. However, I can find no reference for a new SI
bringing in the new directive.
Will a new SI be enacted? If so w
Hi All
ETSI 300 330 uses the term H Field Strength Density - which I have not come
across before. It appears to mean the H field strength measured in a particular
resolution bandwidth on the spectrum analyser.
Can anyone confirm that please?
Any help much appreciated.
Regards
Andy
-
John
Is there anything stopping the device producing noise when it is out of the
water? If not I would look to test it as for any normal device.
Regards
Andy
-Original Message-
From: John Allen [mailto:jral...@productsafetyinc.com]
Sent: 18 May 2016 22:19
To: EMC-PSTC@LISTSERV.IEEE.OR
Rich
If you have not done a risk assessment previously it can be daunting - where do
you draw the line with "what if".
In the UK rail industry an example could be "What happens if the train is hit
by a comet". Answer everyone dies. So what mitigation can you do - run trains
in tunnels deep in r
: [PSES] FW: EMCTLA - White Paper - Modes of Operation for EMC
Testing
In message
,
dated Fri, 11 Sep 2015, "McCallum, Andy"
writes:
>The EMC test house association has produced a white paper for
>discussion on Modes of operation for EMC testing. Be interested to hear
>yo
All
The EMC test house association has produced a white paper for discussion on
Modes of operation for EMC testing. Be interested to hear your comments – I can
provide a pdf copy on request. The abstract reads:
Abstract:
The EMC testing industry is mature but test labs are simply not testing
p
John
EMF can affect things as well as living tissue
http://www.icnirp.org/cms/upload/publications/ICNIRPstatgdl.pdf
Electromagnetic interference from low-intensity
static magnetic fields has been observed to affect the
operation of pacemakers, particularly those with magnetic
switches, and other
Charles/Joe
Yes I was referring to homeplug. Thanks your advice I will follow EN 60950.
Regards
Andy
From: Grasso, Charles [mailto:charles.gra...@echostar.com]
Sent: 23 June 2014 20:19
To: McCallum, Andy; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] EN-61000-6-4
Andy - Are you referring to
cents worth.
Enjoy the weekend,
Chet Summers
Compliance Engineering
Schneider Electric
chet.summ...@schneider-electric.com<mailto:chet.summ...@schneider-electric.com>
From: McCallum, Andy [mailto:andy.mccal...@mottmac.com]
Sent: Friday, June 20, 2014 2:30 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
All
Why are telecommunications port emissions so much higher than AC power ports?
Regards
Andy
-
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussion list. To post a message
[mailto:j...@jmwa.demon.co.uk]
Sent: 11 June 2014 13:39
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Automotive Directive 2004/104/EC and EN 55012
In message
,
dated Wed, 11 Jun 2014, "McCallum, Andy"
writes:
>But the difference is only 2dB - I don't see the point.
Poli
14 12:28:44 +0100,
"McCallum, Andy" wrote:
> Can anyone explain the difference in the limits between the directive and EN
> 55012.
EN 55012 is intended to protect off-board receivers, and 2004/104/EC (and ECE
R10, CISPR 25, and OEM standards) are intended to protect on-board rec
All
Can anyone explain the difference in the limits between the directive and EN
55012.
Regards
Andy
-
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussion list. To post a message to the list, se
Brian
I had some trouble importing equipment from USA a few years ago - for a
relatively small fee it was sorted out by http://www.techintl.com/ (Charles
Green I think his name was). They provided a UK address for the US manufacturer.
Hope that helps.
Andy
From: Charlie Blackham [mailto:char.
All
Seems to be a serious shortage of EMC engineers in the UK at present. I have
had numerous requests recently but being new in my post I am not looking to
move at present. Please pass on the info below to anyone who may be interested
or contact me off list for any more details.
Regards
Andy
dated Fri, 31 Jan 2014, "McCallum, Andy"
writes:
>The rectifier is in fact 12 pole in this case giving harmonics at
>600Hz.
>
>We will look to replace the loop system.
I don't really understand that. You originally asked what the field strength
would be at a c
: [PSES] Audio Frequency Induction Loop
In message
,
dated Fri, 31 Jan 2014, "McCallum, Andy"
writes:
>It's a UK based Tram - single conductor wire. Traction current return
>via the running rails.
I have now checked and the 15 μT value at 10 m from the track in EN
50121-3 is r
uency Induction Loop
In message
,
dated Wed, 29 Jan 2014, "McCallum, Andy"
writes:
>Sorry the quoted limits from the installer of the Afil system are from
>BS EN 60118-4:1998 : I will read the 2006 and see if there have been
>any changes.
There have been; the installer really sho
@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Audio Frequency Induction Loop
In message
,
dated Mon, 27 Jan 2014, "McCallum, Andy"
writes:
>EN50121-2:2006 states in Table C1 that the typical magnetic field from
>a 750V catenary railway drawing 1000A at 10m is 15 micro Teslas
>(150
...@jmwa.demon.co.uk]
Sent: 24 January 2014 16:29
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Audio Frequency Induction Loop
In message
,
dated Fri, 24 Jan 2014, "McCallum, Andy"
writes:
>Anyone aware of any interference from Trams (750V DC Overhead Catenary
>Systems, max c
Hi
Anyone aware of any interference from Trams (750V DC Overhead Catenary Systems,
max current 1000A) on AFIL systems (EN 60118-4:2006). From my very basic
calculation you need a significant separation distance (in excess of 25m). Any
previous studies or examples would be most helpful.
Regard
41 matches
Mail list logo
