Mike / all.
You seem to have forgotten Amplifier Research has competing equipment to the
one that you work for.
Frank
- Original Message -
From: Mike Hopkins michael.hopk...@thermo.com
To: 'Bill Flanigan' bflani...@ameritherm.com;
emc-p...@majordomo.ieee.org
Sent: Wednesday, October 30,
Try McMaster-Carr on-line at www.mcmaster.com a wonderful engineering supplier.
Whatever they have you can have one, tomorrow, just pay with a credit card.
If you have REAL money to spend try www.cole-palmer.com
Best Regards
Ted Rook, Console Engineering, ext 4659
Please note our new
don't you stick the probes in the outlet with the knob set to 'OHMS'? (;o)
sorry couldn't resist it.
don't try this at home folks.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web
Hi Gert:
I made the comment about the UK based on the following information:
http://www.emctla.org/Tech%20Notes/technical_guidance_note_33.htm
2) I found the standard referred to at:
http://www.hmso.gov.uk/si/si1992/Uksi_19922372_en_1.htm
See section 20.
PS: I love the Brits - who else would
Hi Folks
Just a few clarifications
a) The UK exemption to the EMC Directive applies only to purely military
equipment, but not to commercial equipment used in a miiltary environment or
to dual use equipment for both military and commercial use. Therefore, it
would be correct for a customer to
You could buy a Radio Shack hand held unit, but I don't know if you can
trace calbration.
Check out Vaisala Products at
http://www.vaisala.com/thumbnail.asp?Section=5444
Best regards,
-doug
Douglas E. Powell
Compliance Engineer
Advanced Energy Industries, Inc.
Fort Collins, CO 80535 USA
David,
An interesting test, but of course this only characterizes the line at a
single frequency. It might be useful to check line impedance at other
frequencies as well, say to the 40th harmonic...? Possibly some modern
line analyzers can do this but it seems to me I once had a working setup
Some years ago I managed to quiet a similar problem by routing the IDE
cables flat against and along the chassis, and holding it/them tight with
plastic clips; that gave free bypass capacitance for the common-mode
currents. I DID have to specify exactly how the cables were to be folded
and
You all know what I mean. After many years I still seem to get them wrong.
I should have just written between 16 and 75A.
Oh well.
Josh
-Original Message-
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Wednesday, October 30, 2002 11:36 AM
To: emc-p...@majordomo.ieee.org
I read in !emc-pstc that Robert Macy m...@california.com wrote (in
000801c28045$01fc35c0$b7775142@robertmacy) about 'Measuring AC Line
Impedance' on Wed, 30 Oct 2002:
Do you have the liberty to share your report - or details and results with
the group?
The results apply only to that particular
These days, there are a number of combination testers on the market that
will perform tests to both IEC 61000-4-5 and 61000-4-11. Thermo KeyTek has
one for just under $10k that also does EFT and Mag fields for the same
price Other manufacturers have similar units - prices depend on things
Patrick,
The UK military has their own standard for EMC. It is Defence Standard 59-41
part 3.
Ross
-Original Message-
From: plaw...@west.net [mailto:plaw...@west.net]
Sent: Wednesday, October 30, 2002 10:49 AM
To: EMC-PSTC
Subject: CE marking/testing of military equipment
I have a
I read in !emc-pstc that Spencer, David H david.spen...@usa.xerox.com
wrote (in 052106A55179D611B34300096BB02E3F8B93@USAMCMS4) about
'EN61000-3-3 -3-11 off topic a bit!' on Wed, 30 Oct 2002:
Having looked into EN61000-3-11, there is a big difference from EN61000-3-3.
The scope of 3-3 refers to
I read in !emc-pstc that Bill Flanigan bflani...@ameritherm.com wrote
(in FB6565868403D511952800D0B78483C43C83FF@AMERITHERM_PDC) about
'EN61326:1997 Planning' on Wed, 30 Oct 2002:
A few questions about compliance to EN 61326. Guidance requested from my
emc-pstc colleagues
What happened in
There is no ground to beieve that military equiment is to be excluded
in any country in Europe. This is definitely not the case in the
Netherlands.
Regards,
Gert Gremmen
ce-test, qualified testing
Rotterdam, The Netherlands
http://www.ce-test.nl
-Original Message-
From:
I read in !emc-pstc that Hans Mellberg emcconsult...@yahoo.com wrote
(in 20021030165345.86510.qm...@web40911.mail.yahoo.com) about
'Question on Receiver EMI testing..' on Wed, 30 Oct 2002:
That reminds me of a set-top b-b receiver I was testing long ago. While it met
all
the class B specs both
I read in !emc-pstc that lfresea...@aol.com wrote (in 5005ED58.70AA8862
.0bdf9...@aol.com) about 'EN61000-3-3 -3-11' on Wed, 30 Oct 2002:
Out of interest, what happens for equipment over 75 amps?
You ALWAYS have to discuss the connection of such a load with your
electricity supplier. This is
I read in !emc-pstc that Joshua Wiseman jwise...@printronix.com wrote
(in F503CB4657AFD4119B9400508BB0D654030C9FCC@irvmail.misirvine.printron
ix.com) about 'EN61000-3-3 -3-11' on Wed, 30 Oct 2002:
Other than that the scope is meant for equipment that is 16A and 75A.
No, get those pesky
I read in !emc-pstc that Spencer, David H david.spen...@usa.xerox.com
wrote (in 052106A55179D611B34300096BB02E3F8B94@USAMCMS4) about
'Measuring AC Line Impedance' on Wed, 30 Oct 2002:
Any comments or input would be welcome.
It's how I do it. It comes as a surprise to some people that the
Do you have the liberty to share your report - or details and results with
the group?
- Robert -
Robert A. Macy, PEm...@california.com
408 286 3985 fx 408 297 9121
AJM International Electronics Consultants
101 E San Fernando,
Greetings fellow EMC'ers..
We are looking for a quality outdoor Temperature/Humidity meter for our open
area test site. Any recommendations?
Thanks!
Randy Flinders
Electromagnetic Compatibility Engineer
Emulex Corporation - We Network Storage
3535 Harbor Blvd.
Costa Mesa, Ca. 92626
Dear Colleagues,
I would like to know if anyone has experience in quieting an IDE interface
and if there are any good design guides.
Here is the scenario:
I have a system that has a HDD and DVD on the IDE interface. My system
clock runs at 54MHz and I am having problems in the 120-125MHz
The real world lives in the near field.
Bob Heller
3M Product Safety, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
=
It has been my experience that both the US and European Military have the
option to waive commercial EMI and safety requirements. Additionally they have
MIL-Stds, MOD (Ministry of Defense) and other military standards they may
choose to require. For our products which are COTS, (Commercial Off
I have a customer asking for CISPR 22 test results on a commercial power supply
intended for use in military equipment in Europe.
I've heard the UK excludes military equipment from CE marking. Do other
countries also exclude military equipment from the EMC Directive?
If CISPR standards are not
As I no longer will be doing testing from my house and will be using third party
labs instead, I will no longer have a need for these instruments and
components. If
interested, please view the list at:
www.members.aol.com/hmellberg/Instruments_for_sale.txt
=
Best Regards
Hans Mellberg
Follow up
Having just completed an ton of work on this using input I got around here
(thanks to Don Borowski, Patrick Lawler, Joe Randolph and John Woodgate).
I believe we have characterized the AC mains of our facility.
As a sanity check/ technical check can any
That reminds me of a set-top b-b receiver I was testing long ago. While it met
all
the class B specs both rad and susc., when placed on top of a TV there were
interference issues because of the close proximity! (both from the TV and from
the
set-top!)
Depending on your application, you may
I read in !emc-pstc that richwo...@tycoint.com wrote (in 846BF526A205F8
4BA2B6045BBF7E9A6A04675901@flbocexu05) about 'Dual band transmitter' on
Wed, 30 Oct 2002:
I have a dual band transmitter that I must test per FCC Part 15. The device
operates simultaneously at 13.56 MHz and 915 MHz and there
Having looked into EN61000-3-11, there is a big difference from EN61000-3-3.
The scope of 3-3 refers to products rated 16 amps or less per phase.
There is no per phase specification in EN61000-3-11. Only this in the
title: equipment with rated current 75 A. Further, the scope does not
specify
In a message dated 10/30/2002 10:54:53 AM Eastern Standard Time,
jwise...@printronix.com writes:
I have a copy of 61000-3-11 and it says that you must test to 61000-3-3. If
you fail this test you can come back and test to 61000-3-11. Other than that
the scope is meant for
equipment
Alan,
I have a copy of 61000-3-11 and it says that you must test to 61000-3-3. If
you fail this test you can come back and test to 61000-3-11. Other than
that the scope is meant for equipment that is 16A and 75A.
Josh
Josh Wiseman
EMC/Product Safety
-Original Message-
From:
A few questions about compliance to EN 61326. Guidance requested from my
emc-pstc colleagues
What happened in Amendment 2; I have the standard to +A1
Immunity:
EN 61000-4-5 [Imm'y Surge] what kind of equipment is needed to
conduct this test?
EN 61000-4-11[Imm'y Voltage
Charles,
I have seen this before during an immunity test. It happened on a commercial
product (not ours) on the IF and LO circuitry during a CE Mark test.
Specifically, it happened with the feedback trace of an LO PLL used for the
IF. The PLL circuitry was unshielded and a small band of
I read in !emc-pstc that alan.hud...@amsjv.com wrote (in 39082109301020
02/A00813/MULDER/120AF2550700*@MHS) about 'EN61000-3-3 -3-11' on Wed,
30 Oct 2002:
G'Day!
Anybody know if EN61000-3-3 (fluctuations flicker for equipment
drawing 16A) will be *replaced* by EN61000-3-11 (fluctuations
I have a dual band transmitter that I must test per FCC Part 15. The device
operates simultaneously at 13.56 MHz and 915 MHz and there is one external
antenna for each band; however the output is time muxed such that
transmission occurs on only one band at any given time. In order to minimize
the
The RoHS Directive comes into effect in July 2006. It will not be
possible to import Ni Cads into Europe after this date.
Everyone else is designing or already has designed out these batteries.
There are plenty of alternatives that can readily be used and it is
advisable to use one of these.
Hi Charles,
I have seen some other replies but I understood your question differently. Are
you trying to test the receiver or is it simply a remote front end for your
measurement set? I don't know anything significant about the first, but if it
is the latter then the receive head should be
I can not see that -3-11 will replace -3-3. The titles indicate that the
standards have different scope. In the latest EMC OJ (August 10 2002) there
are no indications that -3-11 will supersede -3-3.
Amund
-Opprinnelig melding-
Fra: owner-emc-p...@majordomo.ieee.org
G'Day!
Anybody know if EN61000-3-3 (fluctuations flicker for equipment
drawing 16A) will be *replaced* by EN61000-3-11 (fluctuations flicker
for equipment drawing 75A) on 1st Dec 2003?
Or are the scopes different and hence both will exist?
Regards
Alan
(Apologies - this is the second sending of this query - I used the wrong
emc-pstc address the first time - D'oh!)
G'Day!
I've been looking at EU Directives for transmitters for the first time,
and have got confused. Some questions:
Q1)
--
For radio transmitting equipment, as covered by
Kim Friends
Sorry for the delay in responding to this enquiry, but I have been on
vacation and only returned to work this morning.
However.
Having been involved in quite a number of recent large bids and contracts in
the UK for both civilian and military use, I can say with some
Hypothetical:
Should a receiver mounted on an antenna be lit up
during an emissions test? The receiver down-converts
the received signal??
Sure. It has oscillators whose emissions might cause interference. Even if
not required by law (Part 15 and receiver above 960 MHz not a radar
detector) it's
Adding a bit to Ken's comments. I agree, but I have seen many times when
surprise emissions have been created by equipment that was never supposed
to do that. Even a simple receiver can have a spurious problem, and I have
encountered complicated receivers where T/R switches or electronic clamping
Greetings,
The scope of the RoHs and WEEE Directives states that the Directives apply
to equipment specified in Annex 1A of the WEEE Directive. Annex 1B of the
Directive gives specific products under the categories in Annex 1A.
Category 8 is Medical Devices. Included in this category is
I'm not going to claim to be an expert on this one, but this is my two
cent's worth. From the point of view of what rf might leak from the EUT, it
seems that an LO or IF would be the main concerns. I don't see how the
absence/presence of a receivable signal would affect LO emissions. The
Group,
A hypothetical question for you...
Should a receiver mounted on an antenna be lit up
during an emissions test? The receiver down-converts
the received signal??
Thanking you all in advance..
Best Regards
Charles Grasso
Senior Compliance Engineer
Echostar Communications Corp.
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