Jim,
Almost all Japanese equipment that I have come across has been fitted with
Earth Leakage trip Circuit Breakers at the input of sensitivity 30mA. I
suspect that this may be a Japanese Industrial requirement but have no proof of
this. I have also seen Japanese CBs of earth leakage trip
Yup, but..
I tired pointing out to one of the RBOC's that there reliance on
OSHA NRTL was horribly inadequate because most of them - maybe all of them
had nothing in the scope of accreditation that indicated the could do any of
the EMC tests. The key to any certification is what the
Just curious here, Obviously, the question was asked, and my people have
responded. Is anyone actually counting or even seriously contemplating the
breakup. Just because a question was asked doesn't mean any action is going
on?
Gary
-Original Message-
From: Mark Hassebrock
Thought this was over by now;;; but since it continues, my vote is NO
split.
Mike Hopkins
mhopk...@keytek.com
-Original Message-
From: Mark Hassebrock [SMTP:mhass...@qualcomm.com]
Sent: Friday, March 17, 2000 3:46 PM
To: emc-p...@majordomo.ieee.org
Subject: Split or Not
Gary and Company,
You have a valid point, but incomplete historical data.The reason OSHA
blesses NRTLs is because the whole issue started because the National
Electrical Code used to state that the appliances (everything is an
appliance in the NEC!) placed into buildings be safety approved
I am looking for the appropriate European Ergonomic standard that addresses
the issue of manual lifting in the workplace. The US equivalent standards
are the NIOSH Work Practices Guide for Manual Lifting , OSHA 1910,
MIL-STD-1472 or MIL-HDBK-795.
Its my understanding that there are standards
Greetings All,
I feel EMC and Safety are joined at the hip so I vote NO Split.
Although some companies are fortunate to have dedicated people, I suspect
there
are many more of us that are required to wear multiple hats.
In my humble opinion, the real issue is the shear volume of mailings each
Hi everyone: Can anyone tell me what gets used in Japan in the way of
GFCI's? There are a few aspects to this question:
1. Is the trip criteria the same (line current minus neutral current 5mA =
trip)?
2. Are their unique Japanese GFCI's?
3. If so, does this have anything to do with the
Scott,
Sorry to hear about your experience but we have had great success using Spread
Spectrum Clock Generation (SSCG) since 1994 and have shipped many millions of
units.
Most PC's built over the last 2 to 3 years also use this technology.
For back ground information, see
Well put. This has been our experience.
Regards,
Naftali Shani, Nortel Networks, Dept. 0S45, MS 117/C1/M05
21 Richardson Side Road, Kanata, Ontario, Canada K2K 2C1
Voice +1.613.765.2505 (ESN 395) Fax +1.613.763.8091 (ESN 393)
E-mail: nsh...@nortelnetworks.com mailto:nsh...@nortelnetworks.com or
Theoretical explanation of how variable clock frequency reduces radiated
emission levels is given in US Patent 5,430,392
/netacgi/nph-Parser?Sect1=PTO1Sect2=HITOFFd=PALLp=1u=/netahtml/srchnum.
htmr=1f=Gl=50s1='5,430,392'.WKU.OS=PN/5,430,392RS=PN/5,430,392 Clock
system and method for reducing the
Please split the list, EMC should be stand alone.
-Original Message-
From: owner-emc-p...@ieee.org [mailto:owner-emc-p...@ieee.org]On Behalf Of
Rossi Giuseppe
Sent: Friday, March 17, 2000 5:17 PM
To: emc-p...@majordomo.ieee.org
Subject: R:EMC/PSTC/NEBS/TREG
absolutely not , please
To All:
Posted for Jason Armstrong of Garwood Laboratories, Inc. by
Ed Nakauchi
e...@garwoodtestlabs.com
-Original Message-
From: Jason jas...@garwoodtestlabs.com
To: Ed Nakauchi e...@garwoodtestlabs.com
List-Post: emc-pstc@listserv.ieee.org
Date: Friday, March 17, 2000 9:21 AM
Subject:
Hey All,
Keep in mind that although Bell Atlantic is often the pickiest, they are not
the only RBOC that flip-flops on the NRTL data issue on an annual basis. I
believe US West has taken their place on the NRTL Wagon this year. Bell
South weighs in on the issue regularly as well. I would not
Robert,
there are a couple of points that came up in your posts that I would like to
more fully understand.
1. ...the site under test is verified against the performance of the site on
which the antenna factors are calibrated.
I honestly don't get this point. The applicable standards (ANSI
Barry
You can also look at the UL Standard for Vacuum cleaning machines (UL1017).
The dielectric test on powered vacuum hoses also employed lead shot.
Kelly
At 10:03 AM 3/17/00 +0200, Peter Merguerian wrote:
Barry,
In my old days working for UL, we used lead shot to test the dielectric
Still can be done at an independent site. The Lab I use, ACME Testing,
here in Washington has accreditation to at least the radiated emissions
portions of the GR-, I have to check on the susceptibility, but I think so.
Even if that were not true. I believe that if your NRTL accepts the EMC
EN60601-1 (Medical Safety) Appendix C provides a list entitled Sequence of
Testing. This list is used during the course of the safety investigation on
the device. It follows as:
C24: Cont. leakage currents and patient auxiliary currents at operating temp
C25: Dielectric strength at operating temp
Robert, and the group,
Although I have only limited experience (1 instance) with dithered clocks, I
thought that I might share that experience with the group. I had a product
that was failing radiated emissions at one particular frequency with a
vertical antenna orientation. I tracked the problem
Hello All,
Does anyone know the equivalent of the US Environmental Protection Agency
(EPA) in Europe?
Thanks
Peter Merguerian
Managing Director
Product Testing Division
I.T.L. (Product Testing) Ltd.
Hacharoshet 26, POB 211
Or Yehuda 60251, Israel
Tel: 972-3-5339022 Fax: 972-3-5339019
e-mail:
Peter Merguerian wrote:
Dear All,
DO NOT SPLIT! I AM ALSO IN FAVOR OF MIGRATING TREG AND NEBS GROUPS INTO TO
THE EMC/PSTC LIST. ARE YOU ALL IN FAVOR?
Absolutely not.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee
John-
Actually, GR-1089 starts at 60 Hz (magnetic field) and 10 kHz (electric field
and conducted tests).
Penny Robbins
Telcordia Technologies
John Juhasz jjuh...@fiberoptions.com on 03/17/2000 08:23:25 AM
Please respond to John Juhasz jjuh...@fiberoptions.com
To: 'Collins, Jeffrey'
Hello Jim and Mihai,
According to IEC 60950 3rd. edition, Clause 2.10.5.3, the distance between
two adjacent tracks on the same inner layer of a printed circuit board is
treated as distance through insulation, and therefore 0,4 mm apply for
supplementary or reinforced insulation.
Your question
absolutely not , please split the list
I'm just intersted in EMC.
Ing. Giuseppe Rossi, Narte Certified Engineer
EMC manager
Centro Ricerche Fiat
Strada Torino 50
10043 - Orbassano (TO)
tel 011 90 83 114
fax 011 90 83 083
e-mail g.ro...@crf.it
--
Da:
I stand corrected regarding my response to Jeff Collins. The frequency range
starts at 10kHz.
Sorry if I misled anyone.
John Juhasz
Fiber Options
Bohemia, NY
-Original Message-
From: e...@itsqs.com [mailto:e...@itsqs.com]
Sent: Friday, March 17, 2000 9:23 AM
To: jjuh...@fiberoptions.com
Of interest, so I forward this to the group:
- Robert -
Robert A. Macy, PEm...@california.com
408 286 3985 fx 408 297 9121
AJM International Electronics Consultants
619 North First St, San Jose, CA 95112
-Original
I have some additional information to add to the recent thread concerning if
EN60065 or EN60950 apply to CCTV equipment for security use. As I reported,
EN 50132-2-1, the performance standard for black and white CCTV cameras for
security use, has been published in the OJ under the LVD. I should
Thanks Eric.
If you read on you see that Bell Atlantic must give 'prior' approval for
'alternate' test facilities.
Jeffrey was asking for documentation from a lab that has this 'prior' approval
and at the moment
DLS is the only one, I haven't checked for others, that I know that have a
letter
Try the europe wide exhibition, Electronica 2000 in Munich. 21-24 Nov.
http://www.electronica.de/englisch/index.html
Alan
-Original Message-
From: Peter Merguerian pmerguer...@itl.co.il
To: emc-p...@majordomo.ieee.org emc-p...@majordomo.ieee.org
List-Post: emc-pstc@listserv.ieee.org
Mihai,
In the past I have worked with many multilayer boards and have applied the
following criteria:
1) Most PC boards are made up of multiple layers (prepreg). This has to be
taken into consideration for traces on opposite layers of the board. In this
case you cannot use the 0.4mm
Jeffrey, the requirement that was for NRTL lab ( Bellcore
representative) for each section of GR-63 GR-1089, has been dropped. See
section 3.1.2 in the BA-NEBS-R10.
However, FCC data/frequency range for radiated emissions is
insufficient: You should have data based on GR-1089
Jeffey and Jay,
Bell Atlantic Specification RNSA-NEB-95-0003, Rev, 10 Issued January
26,2000 has removed the NRTL requirement,( see sections 1.6.1 and
3.1.2)
Regards,
Eric Petitpierre
Pulsecom
Herndon,VA
eric.petitpierre
__ Reply
All,
..and is this where all the problems are going to start!
Regards
Tony Reynolds
Pitney Bowes Ltd
NB This is not intended as a criticism of David Gelfand and/or his
company but just a comment on the implications of the
Folks:
EN 60204-1 also specifies an insulation resistance test.
Depending on the standard, they tell you the sequence of the various safety
tests.
For example, in EN 60204-1, clause 19.1 (the test clause) states:
When these test are performed, it is recommended that they follow the
sequence
Hi All,
This may not be the right forum so if not, please point me in another
direction.
Question: can anyone tell me what is Margin Testing as it is applied to
ATM, Frame Relay, Internet backbone type of equipment?
I do not have any more than that to go on right now. I do know some tiny bit
You have to be careful here Jeff. The frequency range for evaluation to
GR-1089 starts at 150kHz and goes up to 10 GHz. The FCC Part 15 testing
range is from 30MHz-1.0GHz.
The GR-1089 spec also contains Immunity requirements.
Further, the objective is to meet the spec with all covers, panels,
forwarding for mih...@trenew.pcnet.ro ... Jim
Forward Header_
Subject:Isolations on inner layers
Author: Mihai Vintila mih...@trenew.pcnet.ro
List-Post: emc-pstc@listserv.ieee.org
Date: 3/16/00 7:34 PM
Hello,
I have a question
Jeffrey,
DLS, here in Illinois, claims to have a letter from Bell Atlantic stating that
their EMC data will be accepted.
You can email Steve Grimes at DLS and ask him if they will give you a copy. (
sgri...@dlsemc.com )
Regards,
Jay Johansmeier
Regulatory Engineer
3Com Corporation
forwarded for Doug ... Jim
Forward Header_
Subject:Re: Mexico Regulatory Requirements
Author: Doug McKean dmck...@corp.auspex.com
List-Post: emc-pstc@listserv.ieee.org
Date: 3/16/00 5:27 PM
Last I heard:
1. You must get the testing completed
Nepcon UK 4-6 April, NEC Birmingham, UK
www.nepcon.co.uk
-Original Message-
From: pmerguer...@itl.co.il [mailto:pmerguer...@itl.co.il]
Sent: Friday, March 17, 2000 9:20 AM
To: emc-p...@majordomo.ieee.org
Subject: Component Supplier's Exhibition
Hello Group,
Could someone lead me
If you put TREG into it I'm off.
Jerry Roberton
NET Europe Ltd
Peter Merguerian wrote:
Dear All,
DO NOT SPLIT! I AM ALSO IN FAVOR OF MIGRATING TREG AND NEBS GROUPS INTO TO
THE EMC/PSTC LIST. ARE YOU ALL IN FAVOR?
Peter Merguerian
Managing Director
Product Testing Division
I.T.L.
Group,
Can anyone confirm that the RBOC's, particularly Bell Atlantic has agreed to
accept EMC FCC data from non NRTL's?
If this is true please provide any documentation to support this. (You know
a customer is going to want to see it)
Thanks in advance,
Jeffrey Collins
MTS, Principal
Hello Group,
Could someone lead me into the largest worldwide exhibitions for Component
Suppliers Exhibitions for Electrical and Electronic Equipment.
Thanks in Advance
Peter Merguerian
Managing Director
Product Testing Division
I.T.L. (Product Testing) Ltd.
Hacharoshet 26, POB 211
Or Yehuda
Dear All,
DO NOT SPLIT! I AM ALSO IN FAVOR OF MIGRATING TREG AND NEBS GROUPS INTO TO
THE EMC/PSTC LIST. ARE YOU ALL IN FAVOR?
Peter Merguerian
Managing Director
Product Testing Division
I.T.L. (Product Testing) Ltd.
Hacharoshet 26, POB 211
Or Yehuda 60251, Israel
Tel: 972-3-5339022 Fax:
Hello Barry,
you might check IEC 60851-5 (Test methods for winding wires) where Clause
4, (Test 13) uses the metal shot when determining breakdown voltages of a
twisted winding wire.
This test is also referenced in IEC 60950 Annex U.2.1.
mit freundlichen Gruessen/ best regards
Volker Gasse
Barry,
In my old days working for UL, we used lead shot to test the dielectric
strength properties of insulated wire connectors. I suggest you take a look
at the wire connector standards UL486 Series.
At 15:26 16/03/2000 -0600, barrym wrote:
I'm looking for reference to any standard which
Agilent Technologies Health Care Solutions Group has an opening for a
Regulatory Engineer to work in our safety test lab.
For a keen position as a Senior Quality Engineer, Regulatory Engineering,
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Select Jobs
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Last I heard:
1. You must get the testing completed in Mexico.
2. And you must get someone with a Mexican tax ID
to sign for your product. I.e. distributor, sales rep.
3. Translate everything into Mexican Spanish.
Not Castilian Spanish.
4. Only one place that I knew of at the time
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