Re: [PSES] EN 62368-3:2017-02-15 power limits

2017-03-09 Thread JIM WIESE 
 RFT to an ICT network under certain condition.  The same 
way 60950-21 allowed RFT to be connected to a telecommunications network when 
it exceed TNV limits.   However section 5 never allows you to connect anything 
to an ICT network, so all of section 5 must by default be a ICT network?  This 
just seems logical!   The  ICT network includes all the equipment and cables 
and splices, and jack panels, and everything between the PSE and the PD.  So 
does everything in the network have to have industry standard connectors 
(nonproprietary connectors) for 62368-3 to apply

120 3.2.3
121 information and communication technology (ICT) network
122 metallically terminated transmission medium and its associated equipment and
123 communication cables
124 NOTE 1 to entry: The cable consists of two or more conductors intended for 
communication and/or power transfer
125 between the various pieces of equipment. The equipment may be located 
within the same or separate structures,
126 buildings or locations, excluding:
127 - the mains system for supply, transmission and distribution of electrical 
power, if used as a communication
128 transmission medium;
129 - a dedicated HBES/BACS network.
130 NOTE 2 to entry: This may include twisted pairs, and may include circuits, 
that are subjected to transients as
131 indicated by ID1 in Table 14 of IEC 62368-1:2014 (assumed to be 1,5kV).
132 NOTE 3 to entry: An ICT network may be:
133 - publicly or privately owned;
134 - subject to longitudinal (common mode) voltages induced from nearby power 
lines or electric traction lines.
135 NOTE 4 to entry: Examples of ICT networks are:
136 - a public switched telephone network;
137 - a public data network;
138 - an Integrated Services Digital Network (ISDN);
139 - a private network with electrical interface characteristics similar to 
the above.
140 NOTE 5 to entry: For information about circuit voltages and signals, which 
may be present, see Annex B of
141 IEC 62949.


“Industry standard” definition comment to TC108:


“Industry Standard” is not defined anywhere nor is an “industry standard 
defined connector”.  Can we please get these included to eliminate confusion.

Proposed solution I provided to TC108


If no better definition exists and if this is the intent, the following is 
suggested:

Industry Standard – A standard, practice, or document used and accepted widely 
by multiple customers, manufacturers, and observers within a given industry, or 
area of interest.  Generally, but not always, produced and accredited by a 
recognized standards development body.  Examples include IEC, IEEE, ANSI, etc

Industry Standard Connector – A connector whose mechanical dimensions, form 
factor, electrical configuration/pinouts and properties are defined in an 
Industry Standard.

“Proprietary Connector” comment to TC108:


There is no definition of what a “Proprietary Connector” is!!!  This revised 
sentence is creating all kinds of consternation in the telecom industry.  It is 
widely being interpreted in a manner that excludes (removes from the scope of 
62638-3) virtually all the equipment used in telecom RFT networks described in 
Section 6 as they typically have proprietary connectors, or no connectors at 
all when shipped.

Confusion exists as many readers agree that line 78 is talking about “industry 
standard connectors”, and thus “proprietary connectors” would be the converse 
of “industry standard”.

Other than the RJ connectors defined by the FCC in Part 68 such as RJ11, RJ45, 
RJ48, etc there are very few industry standard connectors used in the 
telecommunications industry.  They range from scotch lock to punch down, to 
wire wrap, to amp champ, to 710, 310, high density 2mm, etc but are generally 
not defined in an industry standard, they are proprietary and there are no 
defined electrical pinouts or properties.

Proposed Solution I provided to TC108


define “proprietary connector”, maybe just say a connector that is not an 
industry standard connector??

Jim Wiese
Senior Compliance Engineer

Office: 256.963.8431
Mobile: 256.714.5882
Email: jim.wi...@adtran.com<mailto:jim.wi...@adtran.com>
Web: www.adtran.com<http://s.bl-1.com/h/CoY1mz9?url=http://www.adtran.com>

ADTRAN
901 Explorer Boulevard
Huntsville, AL 35806 - USA

From: Richard Nute [mailto:ri...@ieee.org]
Sent: Wednesday, March 08, 2017 5:36 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: Re: [PSES] EN 62368-3:2017-02-15 power limits


Hi Chuck:

I have reviewed the IEC draft version of EN 62368-3, 108/639/CD.  As near as I 
can tell, the power limits depend on the components of the system such as wire 
size and connector ratings.  In some cases, the power can be as high as 100 
watts.  In other cases, the current is limited to 1.3 amperes.
There is no one answer to your question.

Best regards,
Rich


-

This message is from the IEEE Product Safety Engin

Re: [PSES] EN 62368-3:2017-02-15 power limits

2017-03-09 Thread John Woodgate 
RE:  Myself and another gentleman who helped with the ITU-T K.50 revision are
now on TC-108 trying to get this resolved for the RFT industry.
 
There is an important point here. If you don't take part in standards work in
your field, others will write standards that apply to your products, and you may
very well not like the result.
 
 
With best wishes DESIGN IT IN! OOO - Own Opinions Only
 <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates
Rayleigh England
 
Sylvae in aeternum manent.
 
From: JIM WIESE [mailto:jim.wi...@adtran.com] 
Sent: Thursday, March 9, 2017 5:57 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] EN 62368-3:2017-02-15 power limits
 
To add to Rich's answer which is correct;
 
I am very involved in this now, and at the recent TC108 US TAG meeting in NC,
the US committee unanimously voted no as this standard has so many technical
issues, especially relating to RFT.  I personally had comments in regards to
almost every line of the text except possibly section 5.  A lot of the issues
was with problems trying to blend consumer ES1/ES2 with telecom ES1/ES2, and
Telecom service provider only RFT.  In addition there have been very long email
threads amongst some of the members regarding all kinds of issues that relate to
scope, definitions, when section 5 does or does not apply, the fact that in some
instances RFT can be at ES2 voltage limits, and not always ES3 (TNV was limited
to 60Vdc in North America, so RFT-V starts at 60Vdc in NA, not 120Vdc), etc.  We
did not have time to go over more than a few of those comments I submitted to
the US Tag due to time constraints, so I am not sure of their status.  
 
The stuff that is not aimed at Telecom powering circuits and RFT is not too bad,
if you can figure out the scope and definitions section the limits align with
industry standards.  So no surprises there.
 
 
 
The following info is only if you care about telecom and RFT powering issues in
62368-3 (section 6). 
 
The problem with section 6 (RFT) which is essentially the old 60950-21, is that
62368-3 is not synced up with other industry standards covering RFT such as
those from Telcordia, ATIS/ANSI, or the newly revised ITU-T K.50 12/16.  K.50
was recently updated 12/16 and is in prepublished state.  For some history, K.50
is where 60950-21 got its RFT stuff originally, K.50 did not have input from the
users or manufacturers of RFT-V (other than getting the Telcordia Class A3
voltage and current limits).  As such 60950-21 was significantly flawed.  It
also missed vital safety information, and was not updated as the Telcordia and
ATIS/ANSI standards covering RFT were updated.  Right after 60950-21 was
published UL had to publish a work around called UL 2391, so that RFT (line or
span powering) equipment could still be Listed, as 60950-21 was incompatible
with the equipment and service providers networks/practices.  Because the
service providers and manufacturers of span/line powering equipment were not on
the safety committees the attempts to get 60950-21 repaired never occurred, it
still has major problems and many manufacturers still have to rely on UL 2391 to
get Listings (But UL 2391 disappears in June 2019 along with 60950-21).  The a
couple years ago 60950-21 propagated the problems into the 62368-3 draft, and
because there were not telecom span power experts or service providers on the
committee no one knew to fix it.  Myself and another gentleman who helped with
the ITU-T K.50 revision are now on TC-108 trying to get this resolved for the
RFT industry.
 
Recall that K.50 and 60950-21 discussed that RFT-V was for use in North America
(it was the Bell system of using span power from Telcordia GR-1089-CORE), and
RFT-C was from Deutsche Telecom in a DIN standards) and is stated as for Europe.
One main change in K.50 was to make RFT-C "outside North America" instead of
restricting it to "Europe".  Another was the adoption of the Telcordia
GR-1089-CORE Class A2 for new equipment as this was something the service
providers started demanding as early as 2000.  The Class A2 thing was adopted in
the recent ATIS/ANSI standards and K.50 adopted it as well, so hopefully 62368-3
will get that updated as well.  Another change in K.50 was to eliminate a
"double fault" test which violates safety principles.
 
K.50 also explains why reinforced insulation or anything other than functional
insulation is not necessary.  The reason is that the RFT is never allowed past
the point of demarcation, and the consumers telecom equipment is already Listed
or approved by the safety standards to withstand much worse events on the OSP
cables.  And the GFCI required would trip in a fault scenario anyway.  So there
are several levels of hazard based safeguards in place without burdening the
equipment with spacings requirements that don't exist in the network anyway.  
 
Most changes in K.50 are to RFT-V and clarifatory, so if you meet the old
60950

Re: [PSES] EN 62368-3:2017-02-15 power limits

2017-03-09 Thread JIM WIESE 
ent into K.50 to 
get it lined up with the prevailing industry practices the relevant industry 
standards for RFT.

So hopefully that will be listened to and other countries will vote no and fix 
62368-3 so it can get published appropriately based on the new ITU-T K.50.

Jim Wiese
Senior Compliance Engineer

Office: 256.963.8431
Mobile: 256.714.5882
Email: jim.wi...@adtran.com<mailto:jim.wi...@adtran.com>
Web: www.adtran.com<http://s.bl-1.com/h/CoY1mz9?url=http://www.adtran.com>

ADTRAN
901 Explorer Boulevard
Huntsville, AL 35806 - USA


From: Richard Nute [mailto:ri...@ieee.org]
Sent: Wednesday, March 08, 2017 5:36 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: Re: [PSES] EN 62368-3:2017-02-15 power limits


Hi Chuck:

I have reviewed the IEC draft version of EN 62368-3, 108/639/CD.  As near as I 
can tell, the power limits depend on the components of the system such as wire 
size and connector ratings.  In some cases, the power can be as high as 100 
watts.  In other cases, the current is limited to 1.3 amperes.
There is no one answer to your question.

Best regards,
Rich

From: Chuck August-McDowell [mailto:chu...@meyersound.com]
Sent: Wednesday, March 08, 2017 1:49 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: [PSES] EN 62368-3:2017-02-15 power limits

Greetings from Berkeley,

I am curious to know the power limits described in the draft standard EN 
62368-3:2017-02-15.
Titled; Audio/video, information and communication technology equipment - 
Safety -- Part 3: DC power transfer through communication cables or ports
Any information would be helpful.

Thank you,


Mr. Chuck McDowell
Compliance Specialist
Meyer Sound Laboratories Inc.
2832 San Pablo Ave.
Berkeley, CA 94702-2204
Direct: 510-540-4670
Phone 510-486-1166 Ext. 270
Fax 510-486-8356
Email cmcdow...@meyersound.com<mailto:cmcdow...@meyersound.com>


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Re: [PSES] EN 62368-3:2017-02-15 power limits

2017-03-09 Thread Chuck August-McDowell 
Thank you for the reply's

Chuck McDowell
Compliance Specialist
Meyer Sound Laboratories Inc.
Direct: 510-540-4670

From: Chuck August-McDowell [mailto:chu...@meyersound.com]
Sent: Wednesday, March 08, 2017 1:49 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] EN 62368-3:2017-02-15 power limits

Greetings from Berkeley,

I am curious to know the power limits described in the draft standard EN 
62368-3:2017-02-15.
Titled; Audio/video, information and communication technology equipment - 
Safety -- Part 3: DC power transfer through communication cables or ports
Any information would be helpful.

Thank you,


Mr. Chuck McDowell
Compliance Specialist
Meyer Sound Laboratories Inc.
2832 San Pablo Ave.
Berkeley, CA 94702-2204
Direct: 510-540-4670
Phone 510-486-1166 Ext. 270
Fax 510-486-8356
Email cmcdow...@meyersound.com


NOTICE: This email may contain confidential information. Please see 
http://www.meyersound.com/confidential/ for our complete policy.
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>

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Re: [PSES] EN 62368-3:2017-02-15 power limits

2017-03-09 Thread Erick Latvala 
You can go to the IEC public commenting section of their website 
http://www.iec.ch/comment/, login, and view IEC draft standards that are open 
to public comments (can even sign up for an email notification when new ones 
are open to public comments).  The entire draft standard for IEC 62368-3 is 
viewable (cannot download).  Commenting for IEC 62368-3 appears to close 
tomorrow (March 10th), so I believe access will be taken away after that.

Erick Latvala, P.E. | Product Safety Specialist
3M Medical Department | Hardgoods Regulatory Engineering
Product Safety Laboratory
3M Center, 235-BE-03 | St. Paul, MN 55144-1000 | United States
Office: +1 651 733 2948
ejlatv...@mmm.com<mailto:ejlatv...@mmm.com>
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: Thursday, March 09, 2017 03:59
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [EXTERNAL] Re: [PSES] EN 62368-3:2017-02-15 power limits

The prEN document is only a formal notice at present, not the proposed 
standard. The underlying IEC standard is still at the CDV stage. You may be 
able to get a copy from BSI under the new scheme for public comments. The 
document reference is 108/675/CDV.

With best wishes DESIGN IT IN! OOO - Own Opinions Only
www.jmwa.demon.co.uk<http://www.jmwa.demon.co.uk/> J M Woodgate and Associates 
Rayleigh England

Sylvae in aeternum manent.

From: McBurney, Ian [mailto:ian.mcbur...@allen-heath.com]
Sent: Thursday, March 9, 2017 8:53 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: Re: [PSES] EN 62368-3:2017-02-15 power limits

Does anyone know where I can obtain or purchase a copy of this draft standard?
A source in the UK would be preferable.

Many thanks;

Ian McBurney
Design & Compliance Engineer.

Allen & Heath Ltd.
Kernick Industrial Estate,
Penryn, Cornwall. TR10 9LU. UK
T: 01326 372070
E: ian.mcbur...@allen-heath.com<mailto:ian.mcbur...@allen-heath.com>


From: Richard Nute [mailto:ri...@ieee.org]
Sent: 08 March 2017 23:36
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: Re: [PSES] EN 62368-3:2017-02-15 power limits


Hi Chuck:

I have reviewed the IEC draft version of EN 62368-3, 108/639/CD.  As near as I 
can tell, the power limits depend on the components of the system such as wire 
size and connector ratings.  In some cases, the power can be as high as 100 
watts.  In other cases, the current is limited to 1.3 amperes.
There is no one answer to your question.

Best regards,
Rich

From: Chuck August-McDowell [mailto:chu...@meyersound.com]
Sent: Wednesday, March 08, 2017 1:49 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: [PSES] EN 62368-3:2017-02-15 power limits

Greetings from Berkeley,

I am curious to know the power limits described in the draft standard EN 
62368-3:2017-02-15.
Titled; Audio/video, information and communication technology equipment - 
Safety -- Part 3: DC power transfer through communication cables or ports
Any information would be helpful.

Thank you,


Mr. Chuck McDowell
Compliance Specialist
Meyer Sound Laboratories Inc.
2832 San Pablo Ave.
Berkeley, CA 94702-2204
Direct: 510-540-4670
Phone 510-486-1166 Ext. 270
Fax 510-486-8356
Email cmcdow...@meyersound.com<mailto:cmcdow...@meyersound.com>


-


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 
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Attachments are not permitted but the IEEE PSES Online Communities site at 
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Jim Bacher <j.bac...@ieee.org<mailto:j.bac...@ieee.org>>
David Heald <dhe...@gmail.com<mailto:dhe...@gmail.com>>
Allen & Heath Ltd is a registered business in England and Wales, Company 
number: 4163451. Any views expressed in this email are those of the individual 
and not necessarily those of the company.
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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 
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All emc-pstc postings are archived and searchable on t

Re: [PSES] EN 62368-3:2017-02-15 power limits

2017-03-09 Thread John Woodgate 
The prEN document is only a formal notice at present, not the proposed standard.
The underlying IEC standard is still at the CDV stage. You may be able to get a
copy from BSI under the new scheme for public comments. The document reference
is 108/675/CDV.
 
With best wishes DESIGN IT IN! OOO - Own Opinions Only
 <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates
Rayleigh England
 
Sylvae in aeternum manent.
 
From: McBurney, Ian [mailto:ian.mcbur...@allen-heath.com] 
Sent: Thursday, March 9, 2017 8:53 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] EN 62368-3:2017-02-15 power limits
 
Does anyone know where I can obtain or purchase a copy of this draft standard?
A source in the UK would be preferable.
 
Many thanks;
 
Ian McBurney
Design & Compliance Engineer.
 
Allen & Heath Ltd.
Kernick Industrial Estate,
Penryn, Cornwall. TR10 9LU. UK
T: 01326 372070
E: ian.mcbur...@allen-heath.com <mailto:ian.mcbur...@allen-heath.com> 
 
 
From: Richard Nute [mailto:ri...@ieee.org] 
Sent: 08 March 2017 23:36
To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> 
Subject: Re: [PSES] EN 62368-3:2017-02-15 power limits
 
 
Hi Chuck:
 
I have reviewed the IEC draft version of EN 62368-3, 108/639/CD.  As near as I
can tell, the power limits depend on the components of the system such as wire
size and connector ratings.  In some cases, the power can be as high as 100
watts.  In other cases, the current is limited to 1.3 amperes.  
There is no one answer to your question.
 
Best regards,
Rich
 
From: Chuck August-McDowell [mailto:chu...@meyersound.com] 
Sent: Wednesday, March 08, 2017 1:49 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> 
Subject: [PSES] EN 62368-3:2017-02-15 power limits
 
Greetings from Berkeley,
 
I am curious to know the power limits described in the draft standard EN
62368-3:2017-02-15.
Titled; Audio/video, information and communication technology equipment - Safety
-- Part 3: DC power transfer through communication cables or ports
Any information would be helpful.
 
Thank you,
 
 
Mr. Chuck McDowell
Compliance Specialist 
Meyer Sound Laboratories Inc.
2832 San Pablo Ave.
Berkeley, CA 94702-2204
Direct: 510-540-4670
Phone 510-486-1166 Ext. 270
Fax 510-486-8356
Email  <mailto:cmcdow...@meyersound.com> cmcdow...@meyersound.com
 
 
-

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
<emc-p...@ieee.org <mailto:emc-p...@ieee.org> >
All emc-pstc postings are archived and searchable on the web at:
http://www.ieee-pses.org/emc-pstc.html
Attachments are not permitted but the IEEE PSES Online Communities site at
http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used
formats), large files, etc.
Website: http://www.ieee-pses.org/
Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe)
<http://www.ieee-pses.org/list.html> 
List rules: http://www.ieee-pses.org/listrules.html 
For help, send mail to the list administrators:
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For policy questions, send mail to:
Jim Bacher <j.bac...@ieee.org <mailto:j.bac...@ieee.org> >
David Heald <dhe...@gmail.com <mailto:dhe...@gmail.com> > 
Allen & Heath Ltd is a registered business in England and Wales, Company number:
4163451. Any views expressed in this email are those of the individual and not
necessarily those of the company. 
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This message is from the IEEE Product Safety Engineering Society emc-pstc
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This message is from the IEEE Product Safety Engineering Soc

Re: [PSES] EN 62368-3:2017-02-15 power limits

2017-03-09 Thread McBurney, Ian 
Does anyone know where I can obtain or purchase a copy of this draft standard?
A source in the UK would be preferable.

Many thanks;

Ian McBurney
Design & Compliance Engineer.

Allen & Heath Ltd.
Kernick Industrial Estate,
Penryn, Cornwall. TR10 9LU. UK
T: 01326 372070
E: ian.mcbur...@allen-heath.com


From: Richard Nute [mailto:ri...@ieee.org]
Sent: 08 March 2017 23:36
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] EN 62368-3:2017-02-15 power limits


Hi Chuck:

I have reviewed the IEC draft version of EN 62368-3, 108/639/CD.  As near as I 
can tell, the power limits depend on the components of the system such as wire 
size and connector ratings.  In some cases, the power can be as high as 100 
watts.  In other cases, the current is limited to 1.3 amperes.
There is no one answer to your question.

Best regards,
Rich

From: Chuck August-McDowell [mailto:chu...@meyersound.com]
Sent: Wednesday, March 08, 2017 1:49 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>
Subject: [PSES] EN 62368-3:2017-02-15 power limits

Greetings from Berkeley,

I am curious to know the power limits described in the draft standard EN 
62368-3:2017-02-15.
Titled; Audio/video, information and communication technology equipment - 
Safety -- Part 3: DC power transfer through communication cables or ports
Any information would be helpful.

Thank you,


Mr. Chuck McDowell
Compliance Specialist
Meyer Sound Laboratories Inc.
2832 San Pablo Ave.
Berkeley, CA 94702-2204
Direct: 510-540-4670
Phone 510-486-1166 Ext. 270
Fax 510-486-8356
Email cmcdow...@meyersound.com<mailto:cmcdow...@meyersound.com>


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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 
<emc-p...@ieee.org>

All emc-pstc postings are archived and searchable on the web at:
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Attachments are not permitted but the IEEE PSES Online Communities site at 
http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used 
formats), large files, etc.

Website:  http://www.ieee-pses.org/
Instructions:  http://www.ieee-pses.org/list.html (including how to unsubscribe)
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Re: [PSES] EN 62368-3:2017-02-15 power limits

2017-03-08 Thread Richard Nute 
 

Hi Chuck:

 

I have reviewed the IEC draft version of EN
62368-3, 108/639/CD.  As near as I can tell, the
power limits depend on the components of the
system such as wire size and connector ratings.
In some cases, the power can be as high as 100
watts.  In other cases, the current is limited to
1.3 amperes.  

There is no one answer to your question.

 

Best regards,

Rich

 

From: Chuck August-McDowell
[mailto:chu...@meyersound.com] 
Sent: Wednesday, March 08, 2017 1:49 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] EN 62368-3:2017-02-15 power limits

 

Greetings from Berkeley,

 

I am curious to know the power limits described in
the draft standard EN 62368-3:2017-02-15.

Titled; Audio/video, information and communication
technology equipment - Safety -- Part 3: DC power
transfer through communication cables or ports

Any information would be helpful.

 

Thank you,

 

 

Mr. Chuck McDowell

Compliance Specialist 

Meyer Sound Laboratories Inc.

2832 San Pablo Ave.

Berkeley, CA 94702-2204

Direct: 510-540-4670

Phone 510-486-1166 Ext. 270

Fax 510-486-8356

Email  
cmcdow...@meyersound.com

 

 


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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:
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Attachments are not permitted but the IEEE PSES Online Communities site at 
http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used 
formats), large files, etc.

Website:  http://www.ieee-pses.org/
Instructions:  http://www.ieee-pses.org/list.html (including how to unsubscribe)
List rules: http://www.ieee-pses.org/listrules.html

For help, send mail to the list administrators:
Scott Douglas 
Mike Cantwell 

For policy questions, send mail to:
Jim Bacher:  
David Heald: