RE: DIY Equipment and Calibration

[Lothar Schmidt]

If you do your own calibration you need to follow the requirements in ISO 17025 
for calibration labs. This requires that you calculate your measurement 
uncertainty, where a test alb is only estimating the uncertainty.

Best Regards
Lothar Schmidt
Director Regulatory & Antenna Services

CETECOM Inc. 
411 Dixon Landing Road
Milpitas, CA 95035
Phone +1 (408) 586 6214
Fax   +1 (408) 586 6299
emaillothar.schm...@cetecomusa.com 

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From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Spencer, David H
Sent: Thursday, December 11, 2008 8:14 AM
To: emc-p...@ieee.org
Subject: RE: DIY Equipment and Calibration

Larry,

For EMC calibrations done in house, I don't think you "have" to write a
procedure if the standard calls out the procedure. 
Clearly if you are doing something unique, or a calibrating a unit which
does not have parameters covered in a standard you need a written
procedure.  

With our Quality Manual, we use the KISS frame of mind for everything.  

If a given reference standard calls out the procedure, we simply
reference that procedure as our process for calibration.
Why would you write a procedure for NSA or LISN verification when it's
called out in C63.4, CISPR 16, or CISPR 22?

An assessor would have a hard time writing a deficiency on that account
(provided you actually use the standard as the process).

Any assessors willing to comment?


Dave Spencer

 


From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Larry
Stillings
Sent: Thursday, December 11, 2008 10:50 AM
To: emc-p...@ieee.org
Subject: RE: DIY Equipment and Calibration

One other thing to add to this thread (as we just went through an audit)
is
you will need to write a test procedure for the calibration (preferably
with
pictures of the calibration setup).

Larry Stillings 


From: rehel...@mmm.com [mailto:rehel...@mmm.com] 
Sent: Thursday, December 11, 2008 10:45 AM
To: emc-p...@ieee.org
Subject: RE: DIY Equipment and Calibration

I believe that you will also need your calibrating equipment traceable
to a
National Standards group such as NIST in the US.

Bob Heller
3M EMC Laboratory, 76-1-01
St. Paul, MN 55107-1208
Tel:  651- 778-6336
Fax:  651-778-6252
==


 

 "Spencer, David

 H"

   

 Sent by:  

 emc-p...@ieee.org
cc 
 

 
Subject 
 12/11/2008 08:04  RE: DIY Equipment and Calibration

 AM

 

 

 

 

 





Chris,

I've built several CDN's.  Repaired both CDN's and LISN's.   Never
messed
with building an EM clamp.   Too much hassle IMO.

As far as calibration,  I try to calibrate as much as is practical "in
house".All the LISN's, ISN's, CDN's, cable loss, amplifier
performance,
etc etc .  But in reality those "calibrations" are just "verifications".
To perform those verifications most people are lacking a network
impedance
analyzer.  The test jigs or setups are easy to build or cheap to
purchase.

Regarding an accrediting organization accepting the results,  you'll
need a
process.  You can't go wrong by referencing CISPR 16 et. al.  in that
respect.   You'll need the verification data. AND, you'll need the
measurement uncertainty.
The last item, you can gather from your impedance analyzer accuracy
specifications (and calibration report) and the test jig VSWR & losses.

As for where you can send you in-house built test items,  most any
ISO17025
test lab which calibrates EMC or similar devices can perform the
calibration.


Regards

David Spencer
EMC Engineer
Xerox Corp.

  From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
  cmander...@micron.com
  Sent: Wednesday, December 10, 2008 5:00 PM
  To: emc-p...@ieee.org
  Subject: DIY Equipment and Calibration



  I'm aware of some people making their own CDN's and LISN's among
  other things and I have few questions about that.
  1) Has anyone tried to build their own EM Injection clamp?
  If so, were you able to find a ferrite supplier that sold
  half-ring cores?
  2) Is it acceptable to calibrate your own equipment?
  If so, how do accrediting bodies view this, and what
  documentation will they want to see?
  If not, does anyone have suggestions about where in the US
I
  can send such homemade equipment for calibration (preferably
Western
  US to save on shipp

Re: Revision of the WEEE and RoHS directives

[Lauren_Crane]

Nick, 

Yes. These proposed revisions to WEEE and RoHS are very interesting. 

Some of what I see; 


*   RoHS has its "own scope" now. Essentially the Annex from WEEE has been
pulled into RoHS. 
*   For WEEE the situation is reversed - It now points to RoHS for scope. 
*   The RoHS "spare parts" exemption is changed and, I think, eroded. Three
scenarios provide exemption- military equipment; components of out-of-scope
equipment that "fulfills its function only if part of that equipment"; and
equipment not intended to be placed on the market as a single functional or
commercial unit" - all rather vague concepts that will, no doubt, require much
guidance and source much debate. 
*   RoHS contains a new criteria prohibiting the "big 6" RoHS materials from
spare parts for the repair or reuse of EEE (ref art. 4.1) 
*   There is a new Annex III with 4 materials list and a very confusing 
linkage
of these materials to risk assessment and the REACH candidate list in Art. 4.7 
*   RoHS is now a CE Marking directive (sigh) 
*   RoHS takes steps to make it clear that importers are "manufacturers"
(regardless of whether there is an OEM external to the EU). 
*   Use exemptions in RoHS annex V and VI are extended to be exemptions also
>from REACH authorization criteria (once any get crafted). 
*   The definition of "homogeneous material" is now defined in RoHS. 


*   WEEE has exemptions similar to RoHS. 
*   Both directives now kindly give a nod towards REACH and essentially say
"Yep, you gotta do REACH too." 
*   Scope of WEEE is now explicitly on waste from private households or 
users
other than private households (this seems to be all users). I guess WEEE was
just silent on this point prior. 
*   EN 50419 is now "the" reference for the ex-bin symbol (one of the few 
cases
where a directive mandates the use of a standard). 


=== 
I am particularly interested in how RoHS's new treatment of integrated parts
would apply in the following scenario 

A large scale stationary industrial tool (LSIT), say a printing press,  is
imported to the EU. It might be considered an "electrical tool" but is exempt
because of the LSIT exemption in Annex I.6. 
The printing press has a power supply in it. The power supply manufacturer
also happens to market their supply in the EU as a single commercial unit. 
The printing press manufacturer has no intention of marketing the power supply
as a separate commercial unit, but they do provide it as a spare part in their
support supply chain. 
Must the printing press company ensure the power supply is RoHS compliant as
an industrial control instrument (controlling voltage)? 

Regards, 
Lauren Crane 
Product Regulatory Analyst
Corporate Product EHS Lead
Applied Materials Inc.
Austin, TX 512 272-6540 [#922 26540]

- External Use -

Save paper and trees!  Please consider the environment before printing this
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Nick Williams  
Sent by: emc-p...@ieee.org 

12/12/2008 04:38 AM To
emc-p...@ieee.org 
cc
Subject
Revision of the WEEE and RoHS directives



  



I'm sure many readers here will be interested in the information at 
the following location:

http://europa.eu/rapid/pressReleasesAct
on.do?reference=IP/08/1878&format=HTML&aged=0&language=EN&guiLanguage=en

Nick.

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RE: Argentina Power plug

[Silvia Diaz Monnier]

Dear Kristiaan,

the plug in Argentina is similar to Australian, but not the same. The
dimensions are different and the polarity is opposite.

The "N" marking is needed and should be on neutral pin, the neutral pin is
the one at left, looking at the pins on plug in this position:   \   /

In the following page you can see a picture:
http://www.cambre.com.ar/popup_image.php?image=3100.jpg

In this other page there is a picture of Australian plug, please notice that
the pin marked with "L" should be marked with "N" in Argentina (the N-pin is
the same in 2-pin plug and 3-pin plug):
http://www.kropla.com/!i.htm

Regards,
Silvia
__
Eng. Silvia Díaz Monnier
NATIONAL INSTITUTE OF INDUSTRIAL TECHNOLOGY
R & D Center of Telecommunications
Electronics and Computer Science
 
Te (+54 11) 4724-6369/6390
Fax (+54 11) 4754-5194/4064
silvi...@inti.gob.ar
___
0800 444 4004 | www.inti.gob.ar




De: Carpentier Kristiaan [mailto:kristiaan.carpent...@thomson.net] 
Enviado el: Viernes, 12 de Diciembre de 2008 11:26 a.m.
Para: emc-p...@ieee.org
Asunto: Argentina Power plug

Hello Group,

External Class II Power supplies for Argentina have an Australian like plug.
Some are marked with "N" on the 1 pin, some with "N" on the other pin.
Does some-one know if the "N" marking is needed and on which pin?  

Vriendelijke groeten, meilleures salutations, mit freundlichen Gruessen,
Best regards,
 
Kristiaan Carpentier
Regulatory & Approvals
Thomson Telecom Belgium
Prins Boudewijnlaan 47
B-2650 Edegem, Belgium.
Tel.: +32 3 443 6407
Fax: +32 3 443 6632
E-mail: kristiaan.carpent...@thomson.net
 

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Argentina Power plug

[Carpentier Kristiaan]

Hello Group,

External Class II Power supplies for Argentina have an Australian like
plug.
Some are marked with "N" on the 1 pin, some with "N" on the other pin.
Does some-one know if the "N" marking is needed and on which pin?  

Vriendelijke groeten, meilleures salutations,
mit freundlichen Gruessen, Best regards,
 
Kristiaan Carpentier
Regulatory & Approvals
Thomson Telecom Belgium
Prins Boudewijnlaan 47
B-2650 Edegem, Belgium.
Tel.: +32 3 443 6407
Fax: +32 3 443 6632
E-mail: kristiaan.carpent...@thomson.net
 

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Re: Wimax

[Charles Blackham]

Steve

Suitable Harmonised EMC standards for WiMAX can be found in the EN 301
489-x series under the R&TTE Directive:

EN 301 489-1 and EN 301 489-4 for Fixed
EN 301 489-1 and EN 301 489-23 for Mobile

regards
Charlie

> Are there any applicable compliance standards for Wimax, specifically
> focused on Electromagnetic Compatibility for the EMC and R&TTE
> Directives?  I don't recall seeing anything that was harmonized but, are
> there publications from work groups or technical groups that would be
> available?
>
>
>
> Steve O'Steen
>
> Advanced Compliance Solutions, Inc.
>
> sost...@acstestlab.com 
>
> 770-831-8048 ext. 210
>
> www.acstestlab.com 
>
>
>
>
>
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Re: Wimax

[reheller]

There are none specifically for Wimax (to my knowledge) but there are for
the frequencies that it uses.

Bob Heller
3M EMC Laboratory, 76-1-01
St. Paul, MN 55107-1208
Tel:  651- 778-6336
Fax:  651-778-6252
=


   
 "Steve O'Steen"   
To 
 Sent by:   
 emc-p...@ieee.org  cc 
   
   Subject 
 12/11/2008 02:56  Wimax   
 PM
   
   
   
   
   




Are there any applicable compliance standards for Wimax, specifically
focused on Electromagnetic Compatibility for the EMC and R&TTE Directives?
I don’t recall seeing anything that was harmonized but, are there
publications from work groups or technical groups that would be available?

Steve O'Steen
Advanced Compliance Solutions, Inc.
sost...@acstestlab.com
770-831-8048 ext. 210
www.acstestlab.com


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Revision of the WEEE and RoHS directives

[Nick Williams]

I'm sure many readers here will be interested in the information at 
the following location:

http://europa.eu/rapid/pressReleasesAction.do?reference=IP/08/1878&format=HTML&aged=0&language=EN&guiLanguage=en

Nick.

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