CCC processes

['Rich Nute']

Is there a good document (in English) on 
CCC processes?  How to do it?

Are there any agents in England who can 
assist or get CCC? 


Thanks for your help,
Richard Nute
San Diego

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RE: FCC Part 68 Gold Plating -- Ethernet Lan

[McDougal, Bret (SHC US)]

Thanks to everyone for the input!

Regards,

Bret 




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From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of John
Woodgate
Sent: Tuesday, July 01, 2008 1:05 PM
To: emc-p...@ieee.org
Subject: Re: FCC Part 68 Gold Plating -- Ethernet Lan

In message <6.1.0.6.2.20080701131509.03cc0...@pop.randolph-telecom.com>,

dated Tue, 1 Jul 2008, Joe Randolph  writes:


>That being said, I would be inclined to use gold plating, at least in a

>thin coating, to avoid the type of corrosion problems that FCC Part 68 
>was trying to address.

I suspect that any such connector that does not have gold plating may 
also have other characteristics that limit the number of insertions and 
withdrawals that can be expected without reliability issues.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to
stop it,
or natural variation is causing it, and we probably can't stop it. You
choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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RE: FCC Part 68 Gold Plating -- Ethernet Lan

[McDougal, Bret (SHC US)]

 
> I suspect that any such connector that does not have gold plating may 
> also have other characteristics that limit the number of insertions
and 
> withdrawals that can be expected without reliability issues.

This was my point to my counterpart in global procurement.  He says QM
labs have tested and determined it is not a problem all the way down to
15 or 16u".  But I haven't seen the report, so I don't know if that is
just one insertion, or more. :-)

Thanks,

Bret


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you for your cooperation.


From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of John
Woodgate
Sent: Tuesday, July 01, 2008 1:05 PM
To: emc-p...@ieee.org
Subject: Re: FCC Part 68 Gold Plating -- Ethernet Lan

In message <6.1.0.6.2.20080701131509.03cc0...@pop.randolph-telecom.com>,

dated Tue, 1 Jul 2008, Joe Randolph  writes:


>That being said, I would be inclined to use gold plating, at least in a

>thin coating, to avoid the type of corrosion problems that FCC Part 68 
>was trying to address.

I suspect that any such connector that does not have gold plating may 
also have other characteristics that limit the number of insertions and 
withdrawals that can be expected without reliability issues.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to
stop it,
or natural variation is causing it, and we probably can't stop it. You
choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

-

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Re: FCC Part 68 Gold Plating -- Ethernet Lan

[John Woodgate]

In message <6.1.0.6.2.20080701131509.03cc0...@pop.randolph-telecom.com>, 
dated Tue, 1 Jul 2008, Joe Randolph  writes:


>That being said, I would be inclined to use gold plating, at least in a 
>thin coating, to avoid the type of corrosion problems that FCC Part 68 
>was trying to address.

I suspect that any such connector that does not have gold plating may 
also have other characteristics that limit the number of insertions and 
withdrawals that can be expected without reliability issues.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to stop it,
or natural variation is causing it, and we probably can't stop it. You choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

-

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Re: HIRF Risk

[Derek Walton]

Hi Ed,

We have pushed our test capability to 3000 v/m right now, but that's 
only from 1 to 18 GHz. The limit is the chamber size, our chamber was 
built to test small boxes ( like shoe box size ). This chamber is mode 
tuned. We plan to make one big enough for DO-160 testing, but so far 
have no results to share.

For the very high fields, I would avoid the galvanized Steel panels, 
they lower the Q.

A big problem we faced was field probes for these levels: I still 
haven't found what I'd call the ideal probe.

We have only tested 1 box that was tested here at 200 v/m and went on 
for the very high fields ( 14 kV/m and higher ), it passed both places, 
so not a great data point I'm afraid.

Sincerely,

Derek Walton
L F Research

Price, Edward wrote:
> *I have had a fair amount of experience in making sure that military 
> systems can meet the MIL-STD-461 RS103 requirement of 200 V/M. 
> However, we are now seeing system requirements for levels from 
> MIL-STD-464 (and other places). These new requirements invoke immunity 
> to levels such as 8 GHz to 10 GHz at 21,000 V/M (peak pulse).*
> ** 
> *I would like to get an idea of the amount of risk involved in going 
> to that next level. Has anyone had any experiences with meeting the 
> 461 200 V/M and then trying for the 464 levels? Does equipment that 
> meets 461 usually meet those 464 levels? If not, what kind of failures 
> do you see (cable arcing, internal component destruction)?*
> ** 
> *Thanks in advance!*
> ** 
> *
> */Ed Price/*
> ed.pr...@cubic.com * WB6WSN*
> *NARTE Certified EMC Engineer & Technician*
> *Electromagnetic Compatibility Lab*
> *Cubic Defense Applications*
> *San Diego, CA  USA*
> *858-505-2780 (Voice)*
> *858-505-1583 (FAX)*
> */Military & Avionics EMC Is Our Specialty/*
> *
> -  
> This message is from the IEEE Product Safety Engineering Society 
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>
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>
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>
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>
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RE: HIRF Risk

[Price, Edward]

 


From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of John Woodgate
Sent: Tuesday, July 01, 2008 10:18 AM
To: emc-p...@ieee.org
Subject: Re: HIRF Risk

In message , dated Tue, 1 Jul 2008, 
Ken Javor  writes:


> Recall that coupling efficiency to circuits decreases with increasing 
>frequency. 21,000 V/m at 10 GHz couples the same level as 2100 V/m at 1 
>GHz, which is like 210 V/m at 100 MHz. But then you need to look at 
>modulation. Usually these high field intensities occur at short pulsed, 
>low duty cycle modulations. For these types of tests, you are usually 
>looking at flight critical equipment only.

Eliminating bird-strike by cooking the fowls at 100 m range? (;-)
-- 


That's an interesting marketing claim; we guaranty always hot pizza delivery.

Ed Price
ed.pr...@cubic.com WB6WSN
NARTE Certified EMC Engineer & Technician
Electromagnetic Compatibility Lab
Cubic Defense Applications
San Diego, CA  USA
858-505-2780 (Voice)
858-505-1583 (FAX)
Military & Avionics EMC Is Our Specialty

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Re: FCC Part 68 Gold Plating -- Ethernet Lan

[Joe Randolph]

On 7/1/2008, Bret McDougal wrote:



The question has come up whether there are any requirements on the gold
plating thickness for Ethernet Connectors (not used for telco interface),
similar to the requirements for 50u" of Gold for Telco connections.  



Hi Bret:

I suspect that the answer is no, although I would have to see IEC 60603-7,
which is the connector standard called out in clause 14.5.1 of IEEE 802.3-2002.

The reason that gold plating was called out in FCC Part 68 was that it is
common for non-gold-plated contacts to corrode over time, especially in humid
environments such as Florida, and introduce noise in a voice call.  Since FCC
Part 68 is "network harms based," the interpretation of "network harm" that
was used to justify this requirement was that it would reduce the number of
field service calls for noisy lines.

Since the FCC-style modular plugs and jacks have been widely adopted by other
countries and for other, non-telco applications such as Ethernet, there is
some chance that when the physical requirements for the connectors were copied
into these newer standards, the requirement for gold plating was copied along
with everything else.  So, I suppose you would have to check IEC 60603-7 to
see what it says.  Chances are that the gold plating is listed as an option,
rather than a mandatory requirement.

In any event, the IEEE 803.3 series is an industry standard and not a
regulatory standard, so even if gold plating is called out in IEC 60603-7, it
does not have the same regulatory significance that it does in FCC Part 68.

That being said, I would be inclined to use gold plating, at least in a thin
coating, to avoid the type of corrosion problems that FCC Part 68 was trying
to address.





Joe Randolph
Telecom Design Consultant
Randolph Telecom, Inc.
781-721-2848 (USA)
j...@randolph-telecom.com
http://www.randolph-telecom.com  

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Re: HIRF Risk

[John Woodgate]

In message , dated Tue, 1 
Jul 2008, Ken Javor  writes:


> Recall that coupling efficiency to circuits decreases with increasing 
>frequency. 21,000 V/m at 10 GHz couples the same level as 2100 V/m at 1 
>GHz, which is like 210 V/m at 100 MHz. But then you need to look at 
>modulation. Usually these high field intensities occur at short pulsed, 
>low duty cycle modulations. For these types of tests, you are usually 
>looking at flight critical equipment only.

Eliminating bird-strike by cooking the fowls at 100 m range? (;-)
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to stop it,
or natural variation is causing it, and we probably can't stop it. You choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

-

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Re: FCC Part 68 Gold Plating -- Ethernet Lan

[John Woodgate]

In message 
, 
dated Tue, 1 Jul 2008, "McDougal, Bret (SHC US)" 
 writes:


>The question has come up whether there are any requirements on the gold 
>plating thickness for Ethernet Connectors (not used for telco 
>interface), similar to the requirements for 50u" of Gold for Telco 
>connections. 

There may be something in the IEC 60603-7 series of standards, but of 
course the requirements are not necessarily enforced.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to stop it,
or natural variation is causing it, and we probably can't stop it. You choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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Re: HIRF Risk

[Ken Javor]

I see very little response at those frequencies and levels.  Recall that
coupling efficiency to circuits decreases with increasing frequency. 21,000
V/m at 10 GHz couples the same level as 2100 V/m at 1 GHz, which is like 210
V/m at 100 MHz. But then you need to look at modulation. Usually these high
field intensities occur at short pulsed, low duty cycle modulations. For these
types of tests, you are usually looking at flight critical equipment only. The
bandwidth of these subsystems is very slow relative to the duration of these
pulses.  You will see some issues, but very few in my experience. One thing
you need to do with flight and engine controls is superimpose a low frequency
modulation to which these systems can actually respond, like 1 or 3 Hz. This
is written up in the modulation section of the MIL-STD-461 appendix.
 
Ken Javor

Phone: (256) 650-5261





From: "Price, Edward" 
List-Post: emc-pstc@listserv.ieee.org
List-Post: emc-pstc@listserv.ieee.org
List-Post: emc-pstc@listserv.ieee.org
Date: Tue, 1 Jul 2008 09:47:45 -0700
To: 
Conversation: HIRF Risk
Subject: HIRF Risk

I have had a fair amount of experience in making sure that military systems
can meet the MIL-STD-461 RS103 requirement of 200 V/M. However, we are now
seeing system requirements for levels from MIL-STD-464 (and other places).
These new requirements invoke immunity to levels such as 8 GHz to 10 GHz at
21,000 V/M (peak pulse).

I would like to get an idea of the amount of risk involved in going to that
next level. Has anyone had any experiences with meeting the 461 200 V/M and
then trying for the 464 levels? Does equipment that meets 461 usually meet
those 464 levels? If not, what kind of failures do you see (cable arcing,
internal component destruction)?

Thanks in advance!

Ed Price
ed.pr...@cubic.com  
 WB6WSN
NARTE Certified EMC Engineer & Technician
Electromagnetic Compatibility Lab
Cubic Defense Applications
San Diego, CA  USA
858-505-2780 (Voice)
858-505-1583 (FAX)
Military & Avionics EMC Is Our Specialty
-  This
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emc-p...@daveheald.com 

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 http://www.ieeecommunities.org/emc-pstc

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HIRF Risk

[Price, Edward]

I have had a fair amount of experience in making sure that military systems
can meet the MIL-STD-461 RS103 requirement of 200 V/M. However, we are now
seeing system requirements for levels from MIL-STD-464 (and other places).
These new requirements invoke immunity to levels such as 8 GHz to 10 GHz at
21,000 V/M (peak pulse).
 
I would like to get an idea of the amount of risk involved in going to that
next level. Has anyone had any experiences with meeting the 461 200 V/M and
then trying for the 464 levels? Does equipment that meets 461 usually meet
those 464 levels? If not, what kind of failures do you see (cable arcing,
internal component destruction)?
 
Thanks in advance!
 
Ed Price
ed.pr...@cubic.com   WB6WSN
NARTE Certified EMC Engineer & Technician
Electromagnetic Compatibility Lab
Cubic Defense Applications
San Diego, CA  USA
858-505-2780 (Voice)
858-505-1583 (FAX)
Military & Avionics EMC Is Our Specialty
-  This
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RE: Power Spectral Density Measurement

[Grasso, Charles]

Grace – Maybe YOUR measurements are correct?

 



From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Grace Lin
Sent: Friday, June 27, 2008 8:01 AM
To: emc-p...@ieee.org
Subject: Re: Power Spectral Density Measurement

 

Dear Members,

 

Thank you very much to those whe have commented.

 

FYI.  We found out the data discrepancy was caused by a test fixture/board
(support test commands to set up channels and power level) and the length of
power lead (from EUT to DC power supply).  

Best regards,

Grace

 

On 6/18/08, Grace Lin  wrote: 

Dear Members,

 

I need your help to find out what may be wrong/inaccurate for the power
spectral density measurement per 47 CFR 15.247.

 

I was told the data I took was about 6 dB higher.  I follow the measurement
procedure (PSD Option 1) for the digital transmission system, published by the
FCC ( 

https://fjallfoss.fcc.gov/oetcf/kdb/for
s/FTSSearchResultPage.cfm?id=21124&switch=P).  The antenna port of the
transmitter was connected to the R&S ESU40 receiver (in spectrum analyzer
mode).  Data was taken with and without 30dB attenuators to avoid overload
issue.  RBW=3kHz, VBW=10kHz, Span=1.5MHz, Sweep=500s.  I couldn't figure out
where might be wrong.

 

Thank you and look forard to your instructions.

 

Best regards,

Grace


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RE: MIL-STD 461 vs. DSTAN 59-41

[Price, Edward]

About three years ago, I made a short table that lists the additional
requirements of DF 59-41 beyond 461E. It's not up to date, what with DF 59-411
& 461F existing now, but it still might be of some interest. I have already
sent a copy to Dave, but I will provide a copy to anyone else who would like
it.
 
Ed Price
ed.pr...@cubic.com   WB6WSN
NARTE Certified EMC Engineer & Technician
Lab Rat
Electromagnetic Compatibility Lab
Cubic Defense Applications
San Diego, CA  USA
858-505-2780 (Voice)
858-505-1583 (FAX)
Military & Avionics EMC Is Our Specialty




From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
david.cole...@selex-comms.com
Sent: Tuesday, July 01, 2008 8:07 AM
To: Barker, Neil; 'Powell, Doug'; emc-p...@ieee.org
Subject: RE: MIL-STD 461 vs. DSTAN 59-41



Thanks guys, but the question was not "where can I get copies of these
standards?", but a request for a technical comparison of the limits / levels /
methods embodied within them. 

Which as you can appreciate, is no small task. So not wishing to 
possibly
re-invent the wheel, I posed the question as I did. 

Best Regards,
Dave Coleman AIIRSM
SELEX Communications 


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RE: FCC Part 68 Gold Plating -- Ethernet Lan

[Grasso, Charles]

I haven’t seen one.

 



From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of McDougal, Bret
(SHC US)
Sent: Tuesday, July 01, 2008 7:52 AM
To: emc-p...@ieee.org
Subject: FCC Part 68 Gold Plating -- Ethernet Lan

 

The question has come up whether there are any requirements on the gold
plating thickness for Ethernet Connectors (not used for telco interface),
similar to the requirements for 50u" of Gold for Telco connections.  

 

I have not found any yet.  However, I am going to check with the safety agency
that does our approvals to see if they have any requirements that I missed
(but I doubt it).  

 

Does anyone else know of a gold plating thickness requirement for an Ethernet
Lan connection?

 

Best Regards,

Bret McDougal <><972-759-2478
Senior Manager  972-852-1001 (Fax)
PQA & ES bret.mcdou...@siemens.com
Siemens Home & Office Communications 
http://gigaset.siemens.com/provider/  

 

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RE: MIL-STD 461 vs. DSTAN 59-41

[david.coleman]

Thanks guys, but the question was not "where can I get copies of these
standards?", but a request for a technical comparison of the limits / levels /
methods embodied within them. 

Which as you can appreciate, is no small task. So not wishing to possibly
re-invent the wheel, I posed the question as I did. 

Best Regards,
Dave Coleman AIIRSM
SELEX Communications 




"Barker, Neil"  

01/07/2008 15:58
To
"'Powell, Doug'" , david.cole...@selex-comms.com,
emc-p...@ieee.org 
cc
Subject
RE: MIL-STD 461 vs. DSTAN 59-41






Also, all DEF STANs are available at http://www.dstan.mod.uk/
  
  
Neil Barker 
Manager 
Central Quality 
  
e2v 
106 Waterhouse Lane, Chelmsford, Essex, CM1 2QU, England 
Tel: +44 (0)1245 453616 
Mobile:   +44 (0)7801 723735 
Fax:+44 (0)1245 453571 
 www.e2v.com   
  
P Consider the environment: do you really need to print this e mail? 
  


From: Powell, Doug [mailto:doug.pow...@aei.com]
Sent: 30 June 2008 18:44
To: david.cole...@selex-comms.com; emc-p...@ieee.org
Subject: RE: MIL-STD 461 vs. DSTAN 59-41

All Mil-Stds are available at http://assist.daps.dla.mil/quicksearch/
  
  
  
  
-doug 




From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
david.cole...@selex-comms.com
Sent: Monday, June 30, 2008 2:15 AM
To: emc-p...@ieee.org
Subject: MIL-STD 461 vs. DSTAN 59-41 
  

Has anyone got (or know of) a comparison between DEFSTAN 59-41 and MIL-STD 461
(any versions, but preferably recent), that ideally covers the Land Use
aspects of the standards? 

I know the UK MoD will accept 461 tested equipment, but for an RFQ it is
better to respond with some technical argument why a read across is (or isn't)
feasible. 

Any help appreciated, 

Best Regards,
Dave Coleman AIIRSM 
 


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RE: MIL-STD 461 vs. DSTAN 59-41

[Barker, Neil]

Also, all DEF STANs are available at http://www.dstan.mod.uk/
 

Neil Barker

Manager

Central Quality

 

e2v

106 Waterhouse Lane, Chelmsford, Essex, CM1 2QU, England

Tel: +44 (0)1245 453616

Mobile:   +44 (0)7801 723735

Fax:+44 (0)1245 453571

 www.e2v.com  

 

P Consider the environment: do you really need to print this e mail?

 

-Original Message-
From: Powell, Doug [mailto:doug.pow...@aei.com]
Sent: 30 June 2008 18:44
To: david.cole...@selex-comms.com; emc-p...@ieee.org
Subject: RE: MIL-STD 461 vs. DSTAN 59-41



All Mil-Stds are available at http://assist.daps.dla.mil/quicksearch/

 

 

 

-doug





From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
david.cole...@selex-comms.com
Sent: Monday, June 30, 2008 2:15 AM
To: emc-p...@ieee.org
Subject: MIL-STD 461 vs. DSTAN 59-41

 


Has anyone got (or know of) a comparison between DEFSTAN 59-41 and 
MIL-STD
461 (any versions, but preferably recent), that ideally covers the Land Use
aspects of the standards? 

I know the UK MoD will accept 461 tested equipment, but for an RFQ it is
better to respond with some technical argument why a read across is (or isn't)
feasible. 

Any help appreciated, 

Best Regards,
Dave Coleman AIIRSM 




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Re: Mode Tuned RS?

[Ken Javor]

Elite Electronic Engineering Company in Downers Grove, IL (greater Chicago)
has a mode-tuned chamber you can drive a truck into. Literally.
 
Ken Javor

Phone: (256) 650-5261


> From: Cortland Richmond 
> Reply-To: 
> Date: Tue, 1 Jul 2008 09:10:45 -0400
> To: 
> Cc: "cortland.richm...@ge.com" 
> Subject: Mode Tuned RS?
> 
> I have a need to do DO-160/ED14 RS testing of a system with fairly large
> component EUT's.  It seemed to me that the best way to do this is in a
> mode-tuned chamber, but there seems a paucity of such in the field, and
> those I've found so far seem too small for the system I wish to test. Have
> any of our group a recommendation where to look?
> 
> Cortland
> KA5
> 
> -
> 
> This message is from the IEEE Product Safety Engineering Society
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> 
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FCC Part 68 Gold Plating -- Ethernet Lan

[McDougal, Bret (SHC US)]

The question has come up whether there are any requirements on the gold
plating thickness for Ethernet Connectors (not used for telco interface),
similar to the requirements for 50u" of Gold for Telco connections.  
 
I have not found any yet.  However, I am going to check with the safety agency
that does our approvals to see if they have any requirements that I missed
(but I doubt it).  
 
Does anyone else know of a gold plating thickness requirement for an Ethernet
Lan connection?
 
Best Regards,

Bret McDougal <><972-759-2478
Senior Manager  972-852-1001 (Fax)
PQA & ES bret.mcdou...@siemens.com
Siemens Home & Office Communications 
http://gigaset.siemens.com/provider/  




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RE: Mode Tuned RS?

[Price, Edward]

From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Cortland
Richmond
Sent: Tuesday, July 01, 2008 6:11 AM
To: emc-p...@ieee.org
Cc: cortland.richm...@ge.com
Subject: Mode Tuned RS?

I have a need to do DO-160/ED14 RS testing of a system with fairly large
component EUT's.  It seemed to me that the best way to do this is in a
mode-tuned chamber, but there seems a paucity of such in the field, and those
I've found so far seem too small for the system I wish to test. Have any of
our group a recommendation where to look?

Cortland
KA5


I think that General Dynamics in Tucson has a decent drive-in chamber. Also,
the US Army at White Sands Missile Range and the US Navy at Patuxent River.

OTOH, maybe you don't need a chamber quite that big?

Ed Price
ed.pr...@cubic.com   WB6WSN
NARTE Certified EMC Engineer & Technician
Electromagnetic Compatibility Lab
Cubic Defense Applications
San Diego, CA  USA
858-505-2780 (Voice)
858-505-1583 (FAX)
Military & Avionics EMC Is Our Specialty
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Re: EMC in the news: RFID & Medical

[John Woodgate]

In message <380-2200872113338...@earthlink.net>, dated Tue, 1 Jul 2008, 
Cortland Richmond  writes:


>I am coming to this late, but this is in line with results for LF 
>security devices versus implanted cardiac defibrillator/pacemakers, is 
>it not?

I don't think we have enough information to say. The whole field (pun!) 
is characterized by missing data.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to stop it,
or natural variation is causing it, and we probably can't stop it. You choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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Re: Mode Tuned RS?

[Derek Walton]

HI Cortland,

can you define "Big" for us please

Sincerely

Derek Walton
L F Research

Cortland Richmond wrote:
> I have a need to do DO-160/ED14 RS testing of a system with fairly large
> component EUT's.  It seemed to me that the best way to do this is in a
> mode-tuned chamber, but there seems a paucity of such in the field, and
> those I've found so far seem too small for the system I wish to test. Have
> any of our group a recommendation where to look?
>
> Cortland
> KA5
>
> -
> 
> This message is from the IEEE Product Safety Engineering Society
> emc-pstc discussion list.Website:  http://www.ieee-pses.org/
>
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>
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>   

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Mode Tuned RS?

[Cortland Richmond]

I have a need to do DO-160/ED14 RS testing of a system with fairly large
component EUT's.  It seemed to me that the best way to do this is in a
mode-tuned chamber, but there seems a paucity of such in the field, and
those I've found so far seem too small for the system I wish to test. Have
any of our group a recommendation where to look?

Cortland
KA5

-

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Re: EMC in the news: RFID & Medical

[Cortland Richmond]

I am coming to this late, but this is in line with results for LF security
devices versus implanted cardiac defibrillator/pacemakers, is it not?

Cortland
KA5S


> [Original Message]
> From: E. Robert Bonsen 
> To: 
> Date: 6/26/2008 5:39:08 PM
> Subject: Re: EMC in the news: RFID & Medical
>
> Published in the Journal of the American Medical Association:
>
> http://jama.ama-assn.org/cgi/content/short/299/24/2884
>
> $15 to download the article.
>
>
>  From the summary, no real info on the test process:
>
> *Design and Setting * Without a patient being connected,^ EMI by 2 RFID 
> systems (active 125 kHz and passive 868 MHz) was^ assessed under 
> controlled conditions during May 2006, in the^ proximity of 41 medical 
> devices (in 17 categories, 22 different^ manufacturers) at the Academic 
> Medical Centre, University of^ Amsterdam, Amsterdam, the Netherlands. 
> Assessment took place^ according to an international test protocol. 
> Incidents of EMI^ were classified according to a critical care adverse 
> events^ scale as hazardous, significant, or light.
>
>
> Regards
> --Robert
>
> E.Robert Bonsen
> Sr. Engineer
> Orion Scientific

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Re: Power Spectral Density Measurement

[John Woodgate]

In message 
<9d04b979323dcd428297dda95108893e0120c...@bb-corp-ex2.corp.cubic.cub>, 
dated Tue, 1 Jul 2008, "Price, Edward"  writes:


>It's a bit difficult to understand how the length of the power cable 
>affected the transmitter coaxial output port power spectral density? 

Perhaps the voltage drop on the cable sent the output into 
non-linearity.
-- 
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
Either we are causing global warming, in which case we may be able to stop it,
or natural variation is causing it, and we probably can't stop it. You choose!
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK

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RE: Power Spectral Density Measurement

[Price, Edward]

 




From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Grace 
Lin
Sent: Friday, June 27, 2008 7:01 AM
To: emc-p...@ieee.org
Subject: Re: Power Spectral Density Measurement


Dear Members,
 
Thank you very much to those whe have commented.
 
FYI.  We found out the data discrepancy was caused by a test 
fixture/board
(support test commands to set up channels and power level) and the length of
power lead (from EUT to DC power supply).  

Best regards,
Grace 
 
 

It's a bit difficult to understand how the length of the power cable affected
the transmitter coaxial output port power spectral density? 
 
Ed Price
ed.pr...@cubic.com   WB6WSN
NARTE Certified EMC Engineer & Technician
Electromagnetic Compatibility Lab
Cubic Defense Applications
San Diego, CA  USA
858-505-2780 (Voice)
858-505-1583 (FAX)
Military & Avionics EMC Is Our Specialty
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Russia + EMC

[reheller]

Can someone provide a thumbnail sketch on the process of importing a
wireless communication headset (such as those used at McDonald's et al)?
Are EMC/radio test reports from accredited test houses outside of Russia
accepted? Are markings required?

Thank you,
Bob Heller, 3M Company
St. Paul, MN 55107-1208
Tel:  651- 778-6336
Fax:  651-778-6252

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Regulatory Engineer seeking employment.

[David Heald]

Greetings all,

  After five years and a few months of hectic but rewarding work, I again find
myself seeking new employment.  

 

Fortunately for anyone who is seeking a senior level Regulatory Engineer or
Regulatory Team Leader, I have some great qualifications.  For the last five
years, I've spent my time in two pursuits:

1) Developing my ability to manage global approvals projects (often 90+
countries) for converged mobile devices.  These products were as complex as
co-located handheld and body-worn GSM / Wi-Fi / Bluetooth / GPS products, and
as simple as the radio modules inside them or the power supplies and cradles
that kept them operating.  This experience is spread between internal projects
and fully outsourced projects through Asia-Pacific ODMs, with total global
regulatory project budgets spanning the range between $5k to $1M+ USD.

2) Obtaining my MBA, which I have already started using via major process
redesigns (for those of you who use them or know what they are, I conceived
the idea for and led the design & implementation of an Agile PLM & SAP based
process to automate sales availability based on Regulatory approvals status
with the added bonus of country - based and revision controlled approvals
documentation and certificate storage).  

 

I got my start as an EMC engineer, but over my career I've also built
competencies serving as a Subject Matter Expert for Bluetooth SIG listings,
NEBS, PCI (Secure PIN entry for payment devices), and for a short time
Reliability & Availability.  

Also, despite not being an official SME, I've developed a working familiarity
with global RF, EMC, and Safety approvals requirements, including the
following:  HAC, DFS/TPC, SAR, PTCRB/CTIA, IEEE1725, GCF, RFID, China CCC /
SRRC / MII NAL, Korea MIC / RRL, Taiwan BSMI / DGT, Japan VCCI / MIC, Brazil
ITE & Mobile Phone approvals requirements, and much more...

 

I think I'll cut it there to keep in compliance with the list rules that I
remember having to enforce from time to time.  

 

If anyone knows of an opening or is interested in talking with me, I would be
very happy to hear from you.  

I can be reached at:

Tel: 631.513.3015

or via email by replying here.  (please be sure to reply only to me, not to
the entire group!)
 
I am presently located on Long Island, NY, but the culture here is not for me
so I will gladly consider relocation (including opportunities outside the USA,
if the opportunity seems right).  

 

Thanks and Best Regards,

-David Heald

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