Date: Wed, 18 Mar 98 12:25:25 -0800
From: ed.pr...@cubic.com
Subject: Re: RF Exposure
To:Kathy (Kate) M. MacLean k.macl...@aprel.com,
emc-p...@majordomo.ieee.org, m...@global.california.com,
t...@world.std.com
Cc:
--- On Wed, 18 Mar 1998 13:00:51 -500 Kathy (Kate) M. MacLean
k.macl...@aprel.com wrote:
Robert -
Saline only has been proposed (is not common) as a simulation for
body tissue (muscle), for which the SAR exposure limit is 4 W/kg.
For brain and organs, the limits are more strict, at
I saw a HP personal computer box with a symbol made of arrows in a
square with the letters nyce adjacent. What does this symbol mean?
hello Brian,
As far as your concerns to safety, you are right. In service areas (EN 60950)
no concern exists for mechanical safety.
Electrically there are some restrictions, that can be overcome using interlocks
or covers.
Your conclusions about the effectiveness of BeCU finger stocks is
hello Don ,
In my opinion the only reason for separating IO ground from Digital ground is
the ease of avoiding current through it.
If a RF current flows through a conducting IO ground plane some
voltage drop will occur. The voltage drop will actually give rise to CM
radiation on the
In addition to bloody fingertips, you might want to consider the
possibility of these broken off finger stock landing on circuits
and shorting something, that might, in turn, cause a hazard.
Contemplating the variety of abnormal test requirements for such a
Brian,
You have cited the only reference that might construe concern of these
fingers, however, I do not know what you mean by if correctly
designed-in. You also did not elaborate on the performance difference
between the 2 gasket materials.
Please
--- On Wed, 18 Mar 98 08:29:11 -0700 ron_pick...@hypercom.com wrote:
Ed,
Why don't you try your local department store. They have get them from
somewhere.
On the other hand, anyone know how to contact the Crash Test Dummy
University for recent
Robert -
Saline only has been proposed (is not common) as a simulation for
body tissue (muscle), for which the SAR exposure limit is 4 W/kg.
For brain and organs, the limits are more strict, at 1.6 W/kg. The
exact content of the simulation liquid will determine its
permittivity and
Date: Tue, 17 Mar 98 11:53:56 -0800
From: ed.pr...@cubic.com
Subject: RF Exposure
To:emc-p...@majordomo.ieee.org
Reply-to: ed.pr...@cubic.com
Looking for a supplier of mannequins (head, upper torso, whole
body?) to simulate and measure the
The term island means seperate from. There are
certainly some cases where this is necessary. As a
general rule, no one rule, IMO, can be stated for
all cases.
Isolating I/O ground from processor ground may not
mean the complete disconnection of the two. IOW, it
doesn't have to be done with
-
Subject: EMI gaskets
I am interested in hearing the experiences of anybody out there who has
had a need for using EMI gaskets, in particular between metal
faceplates of circuit packs in a Telecomms Sub-rack.
We have evaluated BeCu finger stock and foam covered with a metallised
fabric
Can someone point me to a consultant that understands the application of
the the EU's electrical codes on the installation of electrical cables
for business equipment in a commercial environment?
Is anyone familar with a book (in English) on the same subject?
Richard Woods
Sensormatic
Hello from Dayton the source of Aviation the Wright Bros.
Computer and Business Equipment Manufacturers Association
is what CBEMA stands for in historic literature.
This name has been changed to Information Technology Industry
Council. ITIC Technical Committee 3, of which Rich Nute is a
Hello All:
Is there any test lab or authority other than UL that publishes a Plastics
Recognized Component Directory? I am interested in finding ratings on
materials based on IEC standards rather than UL standards.
Thanks,
Mel PedersenMidcom, Inc.
Homologations
--- On Wed, 18 Mar 98 12:29:03 f...@netc.ie wrote:
Subject: EMI gaskets
I am interested in hearing the experiences of anybody out there who has
had a need for using EMI gaskets, in particular between metal
faceplates of circuit packs in a Telecomms Sub-rack.
We have evaluated BeCu
Ed,
Why don't you try your local department store. They have get them from
somewhere.
On the other hand, anyone know how to contact the Crash Test Dummy
University for recent graduates? :-
Best regards,
Ron Pickard
Don,
You'll open a can of worms with this one.
The worst problems I've seen with I/O were when the ground was isolated.
Why? Because the bypass capacitor return path was also isolated. I
actually had a (manufacturer name here) computer board where the last two
or three pins on one end of a
While reviewing the EMI mitigation techniques of our engineers, a few of
us have been debating the use of ground islands on a multilayer board.
The designs have one layer for Vcc, one for ground and 2 signal layers.
The Vcc layer is isolated into various islands. The debate involves the
Hello Kaan
If you are working for ce-marking and you are in professional audio equipment,
do not forget to check on
EN 55103 parts 1 and 2 .
see the list of harmonised standards as for today on
http://www.cetest.nl/emc-harm.htm
Regards,
Gert Gremmen
==
CE-test, qualified testing,
As a first pass, try balloons with mild saline solution. The skin effect
at those frequencies is shallow so bags o' water are close approximations.
- Robert -
On Tue, 17 Mar 1998 ed.pr...@cubic.com wrote:
Looking for a supplier of mannequins (head,
Santa Clara Product Safety Technical Committee (PSTC), March 24
April 28, 1998 Meeting Notices
Please mark you calendar and join us for the following meetings:
Joint Meeting of the Santa Clara PSTC
and
Bay Area Chapter of the System Safety Society
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