RE: shielded data cables

1999-08-24 Thread Grant, Tania (Tania)

J. Benary,

You use shielded data cables when you don't pass EMC with unshielded data
cables.   There are no standards that say you must use them.   However,
there are many books, magazine articles, and various lectures on EMC that
provide you design guidelines under what conditions shielded cables can
improve your EMC performance.

Tania Grant,   tgr...@lucent.com tgr...@lucent.com  
Lucent Technologies, Communications Applications Group


--
From:  Price, Ed [SMTP:ed.pr...@cubic.com]
Sent:  Tuesday, August 24, 1999 11:00 AM
To:  'emc-p...@majordomo.ieee.org'
Cc:  'j.benary'
Subject:  FW: shielded data cables


Posted for j.benary [jben...@netvision.net.il]:
 
 
 
 

:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)
Ed Price
ed.pr...@cubic.com
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA.  USA
619-505-2780 (Voice)
619-505-1502 (Fax)
Military  Avionics EMC Services Is Our Specialty
Shake-Bake-Shock - Metrology - Reliability Analysis
:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)

 -Original Message-
 From: j.benary [SMTP:jben...@netvision.net.il]
 Sent: Tuesday, August 24, 1999 11:17 AM
 To:   emc-p...@majordomo.ieee.org
 Subject:  shielded data cables
 
 Need information about shielded data cables. are there any standards,
 specifications. when it is must to use?.
 thanks.

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Temperature Measuring of Magnetic Components

1999-08-24 Thread Kamran Mohajer

Hello EMC-PSTCers,

I wonder if anyone knows of the method of measuring temperature limits on 
magnetic components.  I happen to get involved in this and found that my 
results are different than the vendors result by as much as 10-15 degrees on 
measuring on a same magnetic component.  Even applying the thermocouple to 
different location on a coil seems to give you different results.  Is there a 
method that I should be following to measure temperature with thermocouples 
methods, not change of resistance, on magnetic parts such as transformers, 
coils, etc.? 

Thanks,

 
***
Kamran Mohajer
DSL Compliance Lead
Cisco Systems, Inc.
Phone(408)-525-6121
Fax(408)527-0495
kmoha...@cisco.com
***

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RE: Concrete as an insulator??? -- and now FCC/FAA

1999-08-24 Thread Mike Hopkins

If I'm not mistaken, there IS an FAA regulation prohibiting the use of cell
phones in airplanes -- I have the regs at home and will look it up.

Mike Hopkins
mhopk...@keytek.com

 -Original Message-
 From: miksher...@aol.com [SMTP:miksher...@aol.com]
 Sent: Tuesday, August 24, 1999 11:13 AM
 To:   gmcintu...@packetengines.com; ed.pr...@cubic.com; emc-p...@ieee.org
 Subject:  Re: Concrete as an insulator???
 
 
 In a message dated 8/23/1999 5:05:26 PM Central Daylight Time, 
 gmcintu...@packetengines.com writes:
 
  Does anybody know why the FCC - not the FAA has regulations
  against using a cell phone in a private airplane. It is a little more
  obvious for a commercial airplane that use the fuselage as a return path
  from various equipment bays but private plans aren't wire that way - I
 don't
  think.
  There was a comment made that it interferes with the Cell system in some
  manner, any clues? 
 
 Stated reason I've always heard, and which makes sense to me: one triggers
 
 multiple cells once one is airborne, which messes up a system that is 
 designed to hand off a call cell to cell, based on signal strength and an 
 assumption that the phone is on the ground.
 
 Mike Sherman
 FSI International
 
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RE: Concrete as an insulator???

1999-08-24 Thread POWELL, DOUG

Don,

In this instance we are operating in the range from 200-800 kHz; the output
is used in a plasma process and so after ignition it will be from 800V to
possibly 1500V depending on the chemistries.  The concrete idea was going to
be used for mounting purposes and also as a coil form.  The engineer found
that the permeability and dielectric constant was okay for his application
(there's a couple of parameters no one brought up in this thread so far).
For his purposes this engineer views the concrete as nearly non-permeable
and almost equivalent to an air-core inductor.  The windings need to carry
several hundred amps of peak current at the resonant switching frequency.
The concrete inductor core is similar to a torus with a major diameter of
about 12-14 and a minor diameter of about 4.  The winding are wrapped with
4 flat braid in sleeving.  It just seems that there should be another
substance that is more suited to the application without getting into a lot
of expense.  

Don't know if this changes the discussion but it will be interesting to see
what else comes out of this thread.



-doug

===
Douglas E. Powell, Compliance Engineer
Advanced Energy Industries, Inc.
1625 Sharp Point Dr.
Fort Collins, Colorado 80525 USA
---
970-407-6410  (phone)
970-407-5410  (e-fax) 
mailto:doug.pow...@aei.com
http://www.advanced-energy.com
===






-Original Message-
From: Don Diego [mailto:zorro_1...@yahoo.com]
Sent: Monday, August 23, 1999 5:34 PM
To: Egon H. Varju; EMC-PSTC
Subject: RE: Concrete as an insulator???



Doug,

It sounds to me like this may be a good time to supply more information
to the group.  High power, 200 kW, at what frequency?  Are we talking
13.56 MHz, 27.12 MHz, 40.68 MHz or are we discussing 18 GHz?

Just thought that this may change the discussion a tad.


--- Egon H. Varju e...@varju.bc.ca wrote:
 
 
 Just to add a bit of trivia to this discussion,
 concrete increases
 substantially in conductivity in the presence of
 ionizing radiation (x-rays,
 gamma rays).  This is well known and documented in
 the nuclear hardening
 community.  This is an indication of an inherent
 population of free charge
 carriers in concrete (be they water-based, or
 other).
 
 Hmm ...  So, not only will we have to keep the
 garden hose away from that 
 200 kW power supply, but it may also need a warning
 label:  FOR USE ONLY 
 IN NUCLEAR-FREE ZONES.
 
 Egon :-)
 
 __
 
 Egon H. Varju, PEng
 E.H. Varju  Associates Ltd.
 North Vancouver, Canada
 
 Tel:   1 604 985 5710 HAVE MODEM
 Fax:  1 604 273 5815 WILL TRAVEL
 
 E-mail:  e...@varju.bc.ca
  var...@csa.ca
 __
 
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RE: PC Power Supply w/ PFC

1999-08-24 Thread Peter Merguerian

John,

Try Nemic Lambda,  Israel. I am sure they or one of their 
subsidiary cmpanies around the world can help you out. If you 
need specific names of people, let me know. 
 
 John,
 When you find one, post the vendor here on the list.
 -we looked for one also, but with ATX wiring, and could not find one that
 had international compliance.  The vendor is Sunpower model SAP 6300P.  It
 is CE marked and specifically marked with 'passes harmonics' and standard,
 but there is no international compliance markings (or UL).  The vendor is
 aware of the harmonics issue.  I don't have a model number for the straight
 pc version supply.  I have tested this supply and I can tell you it is much
 cleaner than the non-pfc counterpart.
 
 Since I had to probe this supply with thermocouples for the heating test, I
 examined the innards and saw that the PFC circuitry is actually a module and
 is more of an optional upgrade.  The case of the supply was not intended for
 this upgrade, but the circuit board of the supply did have a connector where
 the PFC module wiring was connected.  The mounting of the module was a bit
 ad hoc.  Interestingly, the vendor offered to upgrade the other supplies we
 had on hand in the lab.
 
 Kyle
 
 
  
   -Original Message-
   From:   John Radomski [SMTP:john_radom...@inter-tel.com]
   Sent:   Tuesday, August 17, 1999 12:34 PM
   To: emc-p...@majordomo.ieee.org
   Subject:PC Power Supply w/ PFC
 
 
   We are looking for a supplier of 300 Watt PS2, PC power supplies
 that have PFC
   (Power Correction Factor).
   Here is the spec:
 
   It must comply with: EN 60950 (safety approval required), EN
 50082-1, EN
   61000-3-2/3, CISPR 22 (or EN 55022).
 
   REQUIRED RATED INPUT: 220-240VAC, 50-60Hz, 3.5A (auto ranging power
 supplies
   with input ratings from
100VAC, are
 accepted)
 
   OUTPUT: +5VDC  30A; -5VDC  0.5A; +12VDC  12A; -12VDC  0.5A
 
   John Radomski
   Compliance Engineer
   Inter-Tel Integrated Systems,
   Chandler, Arizona, USA
   john_radom...@inter-tel.com
 
 
 
 
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PETER S. MERGUERIAN
MANAGING DIRECTOR
PRODUCT TESTING DIVISION
I.T.L. (PRODUCT TESTING) LTD.
HACHAROSHET 26, P.O.B. 211
OR YEHUDA 60251, ISRAEL

TEL: 972-3-5339022
FAX: 972-3-5339019
E-MAIL: pe...@itl.co.il
Visit our Website: http://www.itl.co.il

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FW: shielded data cables

1999-08-24 Thread Price, Ed

Posted for j.benary [jben...@netvision.net.il]:
 
 
 
 

:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)
Ed Price
ed.pr...@cubic.com
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA.  USA
619-505-2780 (Voice)
619-505-1502 (Fax)
Military  Avionics EMC Services Is Our Specialty
Shake-Bake-Shock - Metrology - Reliability Analysis
:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)

 -Original Message-
 From: j.benary [SMTP:jben...@netvision.net.il]
 Sent: Tuesday, August 24, 1999 11:17 AM
 To:   emc-p...@majordomo.ieee.org
 Subject:  shielded data cables
 
 Need information about shielded data cables. are there any standards,
 specifications. when it is must to use?.
 thanks.

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RE: Fixed Installation

1999-08-24 Thread Campi, Mike

Per EN 60950 and UL 1950, Section 1.2.3. If it requires a tool to move it
then it is considered fixed equipment. If the equipment has wheels and can
be moved by the user without using tools then it is considered movable
equipment. From your description below it sounds like you have fixed
equipment. 

Mike Campi


-Original Message-
From: rehel...@mmm.com [mailto:rehel...@mmm.com]
Sent: Tuesday, August 24, 1999 5:56 AM
To: emc-p...@majordomo.ieee.org
Subject: Fixed Installation





I have questions concerning a manufacturing system. The system comprises of
about a dozen pieces of integrated equipment that take up about 12 x 6 x 6
meters and it has a total continuous current draw of 250 kilowatts (408,
3-phase). The equipment will not be sold and only used internally within
the same company that is the manufacturer. It is the first of a very
limited number of systems (roughly 5). My first impression is that this
system can be considered a fixed installation under the EMC Directive and
therefore is exempt from the EMC Directive (at least that's my
interpretation of section 6.5 of the Guidelines on the EMC Directive).

However, after a year or so, the system may be torn down, shipped to a
different manufacturing facility within the same company and reassembled.

First of all, am I correct in considering this a fixed installation? And
does it remain a fixed installation even if it is moved?

Does it fall under the EMC Directive? Does it require a TCF?

Or should I only be concerned with emission levels in situ?



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EMC Testing of Equipment Built In-House

1999-08-24 Thread jrbarnes


About a week ago one of the participants on this mailing list asked whether
  equipment built in-house, for a company's

internal use, had to be safety and electromagnetic compatibility (EMC) tested.
  I just started reading Tim Williams' book EMC for Product

Designers (second edition) this morning, and on page 15 came across the
  following statement under Scope, requirements, and

exceptions for EMC Directive 89/336/EEC:

 Taken into service

 Taking into service means the first use of a product in the EU by its
  final user.  If the

 product is used without being placed on the market, if for example the
  manufacturer is

 also the end user, then the protective requirements of the Directive still
  apply.  This

 means that sanctions are still available in each member state to prevent
  the product from

 being used if it does not comply with the essential requirements or if it
  causes an actual

 or potential interference problem.  On the other hand, it should not need
  to go through

 the conformity assessment procedures to demonstrate compliance (article 10,
  which

 describes these procedures, makes no mention of taking into service).  Thus
  an item of

 special test gear built up by a lab technician for use within the campany's
  design

department must still be designed and installed so as not to cause or suffer
  from

interference, but should not need to follow the procedure for aplying the CE
  mark.



  John Barnes   Advisory Engineer

  Lexmark International



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GeldKarte Approval

1999-08-24 Thread carlos . perkins

Hello everyone,

Does anyone out there have any experience with cashless approvals in
Germany?

We have a product that may (or may not) need GeldKarte approval for use in
the German market.  All the specifications I have been able to get are in
German, and the translations do not make it clear if we need approval or
not.

Help!

Many thanks,

Carlos Perkins
Compliance Manager - MEI



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Resend: IEC65 or IEC950 ?

1999-08-24 Thread sbtan



Hi,

This is a resend . Wonder does any one has the answer.

Thanks in advance !



Hi,

I have been troubled by some standard issue and sincerely hope that someone
could share their experience with me.

My company is selling multimedia products which is classified as Information
Technology Equipment(I.T.E.).
We used to OEM AC/DC adapter  to be bundled with our I.T.E. products.
So happen that one of the vendor tested his China  AC/DC power adapter to
GB8898(which is equivalent to IEC65) rather than GB4943(equivalent to IEC950)

My doubts are :
1)  Can I still declare my product as I.T.E., if it is bundled with adapter
tested to GB8898(IEC 65) rather than
 GB4943(IEC950) ?
2) Will there be any legal issue that I may face by using  IEC65 tested  adapter
for I.T.E. products ?
3) Wonder is the testing criteria of IEC65  more stringent than IEC950 ?


Thanks in advance !
Jess





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Equipment Produced in Series

1999-08-24 Thread Peter E. Perkins


PSNet, et al,

Again we get into wordsmithing...  It's pretty simple...  Equipment
is either custom made, one-at-a-time, or multiple copies are made...  If
you make one-of-a-kind custom machines you need to fully test each machine
for compliance since there is no other machine made which can represent
this machine...  If you make more than one of each machine then you are
series manufacturing and you only need to type test to show compliance... 
Seems to me that you would want to claim series manufacturing, if possible,
to simplify the certification testing needed...  

- - - - -

Peter E Perkins
Principal Product Safety Consultant
Tigard, ORe  97281-3427

+1/503/452-1201 phone/fax

p.perk...@ieee.org  email

visit our website:

http://ourworld.compuserve.com/homepages/peperkins

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Medium pressure mercury lamps

1999-08-24 Thread Janne Engström

Hi all EMC experts,

We are going to test a new product for EMC within short.
The product is equipped with one or more UV-lamps
Medium pressure mercury lamps 
Does anybody have any experience in these lamps?
Will they generate any EMC-emissions?

Thanks in advance for any info!

Janne Engstrom


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FW: Equipment Produced in Series

1999-08-24 Thread Arun Kaore

Our interpretation of series produced equipment is that of bulk
manufactured units where the CISPR 80-80 rule applies. It could generally be
Group 1/2 Class A/B bulk produced lab meters, household/light commercial
medical diagnostic gear etc. 

Equipment not produced in series could imply (say Group 2 Class A) heavy
industry items such as massive industrial induction/microwave ovens, billet
heaters etc which are unique contract jobs, which will probably never be
tested on a test site, but because of the complexities of the installation
will be tested in situ. 

These are the types of jobs where one forgets about the use of LISNs and
shudders at the thought of using a HV probe. 

Cost of such stringent EMC testing will almost inevitably be built into the
contract. 

Regards

Arun Kaore
EMC Engineer

ADI Limited
Systems Group
Test  Evaluation Centre
Forrester Road, St Marys NSW 2760
P O Box: 315, St Marys NSW 1790

Tel: 61 2 9673 8375
Fax: 61 2 9673 8321
Email: kao...@sg.adi-limited.com.au mailto:kao...@sg.adi-limited.com.au 

-Original Message-
From:   rehel...@mmm.com mailto:rehel...@mmm.com
[mailto:rehel...@mmm.com] mailto:[mailto:rehel...@mmm.com] 
Sent:   Tuesday, 24 August, 1999 6:19
To: emc-p...@majordomo.ieee.org mailto:emc-p...@majordomo.ieee.org 
Subject:Equipment Produced in Series




CISPR 11 talks about .equipment produced in series.. Has anyone
seen a definition of what equipment produced in series actually means? Is
there a time period involved? Does it have to be produced daily, weekly, or
monthly? Is a batch of 10 pieces of equipment produced once a year produced
in series? Does it have to be made on an assembly line?
The reason I ask is that CISPR 11 goes on to say All equipment not produced
in series shall be tested on an individual basis. If it is not produced in
series then every one made must be tested. What is equipment NOT produced in
series?



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RE: Concrete as an insulator???

1999-08-24 Thread Don Diego

Doug,

It sounds to me like this may be a good time to supply more information
to the group.  High power, 200 kW, at what frequency?  Are we talking
13.56 MHz, 27.12 MHz, 40.68 MHz or are we discussing 18 GHz?

Just thought that this may change the discussion a tad.


--- Egon H. Varju e...@varju.bc.ca wrote:
 
 
 Just to add a bit of trivia to this discussion,
 concrete increases
 substantially in conductivity in the presence of
 ionizing radiation (x-rays,
 gamma rays).  This is well known and documented in
 the nuclear hardening
 community.  This is an indication of an inherent
 population of free charge
 carriers in concrete (be they water-based, or
 other).
 
 Hmm ...  So, not only will we have to keep the
 garden hose away from that 
 200 kW power supply, but it may also need a warning
 label:  FOR USE ONLY 
 IN NUCLEAR-FREE ZONES.
 
 Egon :-)
 
 __
 
 Egon H. Varju, PEng
 E.H. Varju  Associates Ltd.
 North Vancouver, Canada
 
 Tel:   1 604 985 5710 HAVE MODEM
 Fax:  1 604 273 5815 WILL TRAVEL
 
 E-mail:  e...@varju.bc.ca
  var...@csa.ca
 __
 
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RE: Question on top 6 frequencies

1999-08-24 Thread mdarula

Yes, Charles you are basically correct.  At the USCEL meeting both Art Wall
and Don Hariman further clarified the proper interpretation of  ANSI C63.4
by re-stating that a full investigation must be performed on the final site
and this site must meet NSA.  However, this clarification is just that, a
clarification.  It is NOT a changed in ANSI C63.4 nor a revision of ANSI
C63.4.  It was also stated that  individuals, labs or manufactures whom have
chosen to used the frequency list method in the past can not used this
clarification as a justification to their accreditation for practicing the
frequency list method in the past.
I personally hope this clarification will help level the playing field by
forcing labs to follow the standards they are accredited to follow and test
to the intent of standard instead of looking for short cuts that compromise
the quality of the measurement.  Their are many labs out their and I can
only hope this will separate the labs that are serious about EMC from the
labs that are compromising the creditability of our industry.

Mark Darula
CKC Laboratories
NW Regional Manager
503 693-3543
http://www.ckc.com

-Original Message-
From: owner-emc-p...@majordomo.ieee.org
[mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Grasso, Charles
(Chaz)
Sent: Sunday, August 22, 1999 7:33 PM
To: 'EMC Group'
Subject: Question on top 6 frequencies



Hello...

I need a rumor confirmed or quashed. I have heard that
at a recent USCEL meeting in Seattle, the existing
procedure of  reporting only the top 6 freqs is
no longer considered acceptable.

Can any one confirm this?

Thank you
Charles Grasso
StorageTek
2270 Sth 88th Street
Louisville CO 80027
Tel: (303)673-2908
Fax(303)661-7115


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Re: Canadian language requirements

1999-08-24 Thread RPickard


Hi Mat,

One source for such information would be the Canadian Consumer Packaging
and Labelling Act. Its C-38 and cost about USD$5.00, if memory serves. As
the name implies, it deals with product labeling, including languages. You
can order it from the Canada Communication Group, tel: 819-956-4802. Or, it
can also be downloaded off of the internet at:

http://canada.justice.gc.ca/FTP/EN/Laws/Title/C/index.html  (look for C-38)

Start with Section 6, BILINGUAL REQUIREMENTS AND EXEMPTIONS.

I'm sure you'll find what you need in there. However, as with all
government documents, its filled with legalese. Please keep in mind that
product marking is ultimately the manufacturer's responsibility.

Best regards,
Ron Pickard
rpick...@hypercom.com





Aschenberg, Mat   

Matt.Aschenberg@echostTo: Emc-Pstc (E-mail) 
emc-p...@ieee.org  
ar.comcc:  

Sent by:   Subject: Canadian 
language requirements  
owner-emc-pstc@majordom 

o.ieee.org  





08/23/99 09:40 AM   

Please respond to   

Aschenberg, Mat   









Where can I find the language requirements for Canada? Is there a website
that would have the legal documentation on it?

Is it true that all product markings must be in french, and english to be
sold in Quebec?

Mathew Aschenberg
Agency Engineering
EchoStar Technologies Corporation
90 Inverness Circle East
Englewood, CO 80112
(303) 706-5064
(303) 799-6406 (Fax)



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Concrete Problems

1999-08-24 Thread Price, Ed

Following up on the subject of concrete efflorescence, here's a site:

http://seal-it.sk.ca/alkali.htm

Ed

:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)
Ed Price
ed.pr...@cubic.com
Electromagnetic Compatibility Lab
Cubic Defense Systems
San Diego, CA.  USA
619-505-2780 (Voice)
619-505-1502 (Fax)
Military  Avionics EMC Services Is Our Specialty
Shake-Bake-Shock - Metrology - Reliability Analysis
:-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-)


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