National Instruments and others offer GPIB to F.O. adapters.
--- Luke Turnbull wrote:
>
> Group,
>
> Does anyone know where I can buy filtered bulkhead connectors for running
GPIB
> cables through screened room walls. Approximate cost?
>
> Alternatively, does anyone know suppliers and cost f
What are the unique testing requirements for a power-line based LAN (i.e. the
information is transported on the powerlines within a home as an example) for
CE
mark? Would the power line harmonics be an issue? ANy unique set-up besides a
couple
of devices exchanging info?
Hans Mellberg
What are the unique testing requirements for a power-line based LAN (i.e. the
information is transported on the powerlines within a home as an example) for
CE
mark? Would the power line harmonics be an issue? ANy unique set-up besides a
couple
of devices exchanging info?
Hans Mellberg
While on the topic of cameras, does anyone make a fiberoptic version of a
surveilance camera?
--- richwo...@tycoint.com wrote:
> We enclosed our camera in screen mesh, but we had to verify that the
> enclosure did not affect the calibration of the room. We test up to 10V/m
> with no problems.
>
For a 2.4GHz SRD, I believe that this is now harmonized. Are individual country
notifications still required?
Thanks in advance
Hans Mellberg
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As a matter of fact the local SCV EMC society paper next week is about EM
radiation
>from fiber optics. No, not from the glass or plastic itself!, but from the
metalized
reflector coating and also from the proximity of the Tx diode next to the
connector.
Actually measurable radiation!
--- John Wo
wrote:
> In Belgium, some areas have 3phase 230V without null (delta).
> Some older houses still have single phase 130V (230 x SQRT 3), probably
> derived from 230V somehow.
> Andre
>
>
> >From: Hans Mellberg
> >Reply-To: Hans Mellberg
> >To: rehel...@mmm.co
No, 230V are not available in three phase. The 220/230/240V ARE derived from
three
phase voltages which are normally 380V or 415V and will converge somewhere
around
400V per phase.
--- rehel...@mmm.com wrote:
>
> What three-phase voltages are commonly available in Europe? Is 230 VAC
> three-phas
Does anyone know if this listing is on the web?
Thanks in advance
Hans Mellberg
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This message is from the IEEE EMC Society Product Safety
Technical
, relocation or
immigration assistance are NOT offered.
send c/o
Hans Mellberg
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This message is from the IEEE EMC Society Product Safety
Technical
Aren't we already using symbols not in 417 such as the Hazard Warning
(exclamation
in a triangle) which is an international(except US) road hazard sign?
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Flexible circuit boards have been used in standard and hi-rel circuits
successfully
for at least two decades or more!
--- Brodie Pedersen wrote:
>
>
> I have a design team looking at using a bendable circuit board in order
> for a certain fit in a plastic housing. Do any of you have informat
But if you analyze the grammatical construction of :
"and he or his authorised representative established within the Community"
That can be interpreted as follows:
"he" is established within the community and in that absense, "his authorized
representative" is established within the community.
Question,
Can 2.4GHz wireless phones be marketed in EU as SRD? Is there a chart or
document
similar to FCC's part 2.106? for frequency allocations in EU?
Thanks in advance
=
Best Regards
Hans T. Mellberg, Consultant
Regulatory, High Speed, EMC and Power Design Services
By the Pacific Coas
Meeting Notice:
The SCV IEEE/EMC and the Product Safety Society
present:
An Overview of Recent Developments in Nanotechnology.
Time: 5:30 Social, 7:00 Presentation
Place: Applied Materials Building 27,
3135 Kifer Road, Santa Clara CA.
All Welcome, No entrance fee, IEEE membership not
requi
Does anyone know anything about this proposed standard? any weblinks?
Thanks in advance
Hans Mellberg
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WE HAVE A NEW MEETING LOCATION...
Meeting Place: Applied Materials Building 27,
3135 Kifer Road, Santa Clara, CA 5:30-8:00pm
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast next to Silicon Valley,
Santa Cruz, CA, USA
>
> Stephen R. Irving
> Project Electrical Engineer
> Lutron Electronics, Co. Inc.
> +1 (610) 282 - 6468
> +1 (610) 282 - 7324 [Fax]
>
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast ne
As I no longer will be doing testing from my house and will be using third party
labs instead, I will no longer have a need for these instruments and
components. If
interested, please view the list at:
www.members.aol.com/hmellberg/Instruments_for_sale.txt
=
Best Regards
Hans Mellberg
often have to test beyond the limits if
your
clientel is to remain satisfied!
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast next to Silicon Valley,
Santa Cruz, CA, USA
office:831-454-9450, cell:408-507-9694, fax:831-454-
;)
> >
> >Ghery
> >
>
> But I always thought that money was power. Maybe you meant 63 dB$.
>
> Ed
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast next to Silicon Valley,
Santa Cruz, CA, USA
offic
Milliard (F/Nrw/Dan.) or miljard (Sw.) stands for Billion.
--- Ken Javor wrote:
>
> Excellent point. Don't the Brits refer to 1,000,000,000 as a milliard, or
> is that continental usage only?
>
> --
>
=
Best Regards
Hans Mellberg
Regulatory Complianc
I no longer have a need for these instruments and are for sale:
Velonex V3300 EFT and Burst Generator
HP 8620C Sweep Oscillator, 2-18 Ghz with 8612A RF section
Contant me for details
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific C
stings are archived and searchable on the web at:
> > http://ieeepstc.mindcruiser.com/
> > Click on "browse" and then "emc-pstc mailing list"
> >
>
>
> ---
> This message is from the IEEE EMC So
I am designing a PCI card that requires the use of several on-board dc-dc
converters
for 24V, 48V and a varialble V. Any suggestions to sources are greatly
appreciated,
Thanks in advance
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pac
ant to say Maxwell, but can't be sure.
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast next to Silicon Valley,
Santa Cruz, CA, USA
office:831-454-9450, cell:408-507-9694, fax:831-454-0755
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>
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What, if any, requirements does Vietnam have for EMC, Safety and telco for
DSL/E1/T1
type of products?
Thanks in advance
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast next to Silicon Valley,
Santa Cruz, CA, USA
408-507-
> For policy questions, send mail to:
> Richard Nute: ri...@ieee.org
> Jim Bacher: j.bac...@ieee.org
>
> All emc-pstc postings are archived and searchable on the web at:
> http://ieeepstc.mindcruiser.com/
> Click on "browse" and then "
is not usually referred
to as
by "the order" of; It simply is the first, second, third etc harmonic of the
fundamental. A harmonic frequency does NOT imply a multiplier of, but one that
sympathetically resonates with the fundamental.
=
Best Regards
Hans Mellberg
Regulatory
"stinger")
Split phase (three or four wire)
Y (four and five wire)
Hope this stirrs the pot
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast next to Silicon Valley,
Santa Cruz, CA, US
Visit our website for details:
www.scvemc.org
Hans Mellberg
Chair,
Santa Clara Valley Chapter of IEEE's EMC Society
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast next to Silicon Valley,
Santa Cruz, CA, US
tly working on his second book.
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast next to Silicon Valley,
Santa Cruz, CA, USA
408-507-9694
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Regrettably and out of respect for National events, the annual Social Event and
Festivities are hereby cancelled.
Our sincere condolences to those with affected families.
The Technical presentation program will resume as usual on the second Tuesday of
October.
Regards
Hans Mellberg
Chair
searchable on the web at:
> http://www.rcic.com/ click on "Virtual Conference Hall,"
>
> ---
> This message is from the IEEE EMC Society Product Safety
> Technical Committee emc-pstc discussion list.
>
> Visit our web site at: ht
Does anyone have the text of article 27.4 of IEC 61558-1? That is the only
portion I
beed. Its a transformer standard and about a hot filament test?
Thanks in advance
=
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast nex
Fellow listers;
If you are aware of a laboratory(ies) in the SF Bay Area that can perform safety
testing on transformers, please email me off-list with contact info.
An urgent situation warrants a quick turn-around.
Thanks in advance
=
Best Regards
Hans Mellberg
Regulatory Compliance &
efficiency of the adopting staff. The benefits
seem
endless.
Bravo to a piece well written albeit some references of cities on the wrong
coast.
Best Regards
Hans Mellberg
Electromagnetic Compatibility Systems Design Consultant
In Beautiful Santa Cruz, California,
United States of America
nature then there will be minimal
attenuation.
If the source resembles an electric field antenna (less likely at lower
frequencies)
then the usual shielding formulae may apply since they are primarily based on
E-fields to some extent and you will have attenuation.
=
Best Regards
Hans
> IT would be interesting to use this forum to do a quick & dirty survey.
> Granted we can only hit where engineers feel like making measurements, &
> when they do, but it would be interesting...
>
> Daren A. Nerad
> EMC Engineer
>
=
Best Regards
Hans Mellberg
R
;
> Thanks,
>
> Max Kelson
> Evans & Sutherland
=
Best Regards
Hans Mellberg
Regulatory Compliance Consultant
and Design Services
By the Pacific Coast next to Silicon Valley
Santa Cruz, CA, USA
408-507-9694
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on.org
> Dave Healddavehe...@mediaone.net
>
> For policy questions, send mail to:
> Richard Nute: ri...@ieee.org
> Jim Bacher: j.bac...@ieee.org
>
> All emc-pstc postings are archived and searchable on the web at:
> http://www
Toy Directive is my guess!!!
Hans
--- David Gelfand wrote:
>
> What directive covers this?
>
> http://www.elderly.com/vintage/items/images/40U/40U-2712_headstock-back.jpg
>
> David
>
>
> ---
> This message is from the IEEE EMC Society Product Safety
SCV EMC Society Meeting
"Emerging standards for Europe"
Tuesday, February 13, 2001
The February meeting of the Santa Clara Valley EMC Society will be held at SGI
in Mountain View, 1600 Amphitheatre Pkwy., building 40, in the Presentation
Center above the lobby.
The social gathering will start a
Tuesday 7:30pm, January 9th, 2001
at SGI, Mountain View, CA
(snacks and refreshments from 5:30pm)
The Basic Physics of Electromagnetics Without Abstract Mathematics
by:Scott Bennett (retired)
Please visit our website for details:
http://www.scvemc.org
---
At 01:40 PM 1/2/01 -0700, Kenneth McCormick wrote:
Thanks guys...BUT, I am not trying to convince UL that I am correct. This
is all internal to the company I am working with.
There are at least four chemical compositions that "qualify" for the term
"petroleum spirits" You can find their spec
it would help to know where it is located
At 08:28 AM 12/21/00 -0800, Jim Bacher wrote:
I (not my employer) have a 8ft x 8ft x 9ft, copper screen room that I need
to get rid of. If you know of a University who would like to have one,
have them contact me. They are welcome to have it for free
The HP application notes are pretty handy for that such as
95-1 S-parameter Techniques
154 S-parameter Design
and there are a lot more specific to network analyzers
They also have tutorials:
http://www.tm.agilent.com/classes/ProdSearch?md=br&view=Tutorials&letter=a&l
anguage=eng&locale=US
Free food and soft-drinks will be available till theyre gone, starting at
5:30pm!
Everyone interested in the topis is invited to attend.
This month's meeting of the Santa Clara Valley Chapter of the IEEE EMC Society
is presenting:
Richard Nute, who will give us a presentation on equipotentiali
ussion list.
>
> To cancel your subscription, send mail to:
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> with the single line:
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>
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> Jim Bacher: jim_bac...@mail.monarch.com
> Michael Garretson:
For sale;
1) Single phase 15A LISN, 9kHz-80MHz
2) Tilt antenna tower base for square mast
3) Antenna holder "trolley" with air piston for h and v polarization for square
shaft mast.
4) Velonex V-3300 EFT and Burst generator.
Contact me off-list for more details.
___
I have been using Diala-X by Shell which was the
replacement for PCB dielectric oil. It has an MSDS.
=
Best Regards
Hans Mellberg
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Could someone please give me the url of the archives
of this list? I used to have it but it got deleted a
while back. Thanks in advance
=
Best Regards
Hans Mellberg
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proximation for silicon based
semiconductors. If your product is specified at a
maximum ambient of 40C as most are, then you must
allow for the thermal rise above that. It may very
well have to be labeled and/or deemed inaccessible to
operator (meaning more labels, tool access etc.)
=====
Best Regards
you do not
have to go to 25GHz then you can use their 3/8" or
1/2" for even lower loss (and less flexibility) but
the high frequency performance begins to deteriorate.
That particular type of coax is corugated and uses
closed cell dielectric material to minimize
hygroscopic affinity.
bility. He also
teaches electromagnetics (on a part-time basis) at
SFSU.
=
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Hans Mellberg
EMC Consultant
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Michael Garretson:
> pstc_ad...@garretson.org
>
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> Richard Nute: ri...@ieee.org
>
>
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Hans Mellberg
EMC Consultant
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.
--- Doug wrote:
>
> Perhaps it's because I've never understood ...
>
> How exactly does one do ambient cancellation at an
> OATS?
=
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Hans Mellberg
EMC Consultant
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Middle East College and Loma Linda
University.
Bertram holds a Ph.D. in Engineering, as well as an MS
and BS in Mathematics, Chemistry and Computer Science,
and has published several textbooks, a multitude of
scientific research papers and has 2 patents pending.
=
Best Re
the Silicon
Graphics Café Iris, Building 5, on 2025 Stierlin
Court in Mountain View, CA.
For additional information and directions visit our
website:
www.scvemc.org
=
Best Regards
Hans Mellberg
EMC Consultant
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The meeting is open to everyone and is free of charge.
Some food and drinks are offered for purchase prior to
the meeting.
visit our website for driving directions.
www.scvemc.org
=
Best Regards
Hans Mellberg
EMC Consultant
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a contibuting author to the Electronics Packaging
Handbook, 1999 (CRC/IEEE Press).
=====
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Hans Mellberg
EMC Consultant
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This message is
speaking of garbled use of units, How many buy
hardrives in bits? everyone I hear says "bytes" as in
a 10 megabyte HD. They even abbreviate is as 10 MB
when it should be called a 10 Megabit drive (10 Mb)
with little b as big B is for Byte.
=
Best Regards
Hans Mellberg
EMC
some EMI filters and havily involved in
TVSS (surge suppressors) and power strip in the last
few years.
=
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Hans Mellberg
EMC Consultant
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Yahoo! Shoppi
Does anyone recall when the first hot-swap disk drive
was used? I recall something in the early 80's for
govt and industry by some company named phase-four? or
something like that.
=
Best Regards
Hans Mellberg
EMC Consultant
__
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For those of you that missed the presentation by Dr.
Richard Wheeler and/or requested copies of his
presentation on Simultaneous Switching Noise in the
z-direction.. can view the paper on his website:
www.wheeler.com
=
Best Regards
Hans Mellberg
EMC Consultant
per computers,
mainframes and workstations.
-Bipolar and CMOS circuit, process and equipment
design.
-High-speed networking: physical layer and OS
interface.
-Authored 14 patents and a technical paper.
-Ph.D. in E.E. and Solid State Physics. He can be
located at: http://www.wheeler.com
=
he welding process. Apparently the
welding process emissions interfered with "listening"
efforts of western intelligence as the plant was near
the east/west border of cold-war Europe. This resulted
in the legal implementation of VDE class A limits.
=====
Best Regards
Hans Mel
scvemc.org
=
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Hans Mellberg
EMC Consultant
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To cancel your subscription, send mail to majord...@iee
There is somewhere a HP app note on how to perform CISPR average
measurements (by calculating the VBW vs frequency). It was written for
the 8566/8568 analyzers Its about 15 yrs old but someone on this list
should have it. I lost mine and I don't recall the exact title. What I
do, is to use a VBW o
TEC in Mountain View is now producing a 1-6 GHz pre-amp for EMC
applications. SMA or N. Call John Fisher Jr. for details at 800-TEC-DOES
===
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Hans Mellberg
EMC Consultant
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--- Benoit Nadeau wrote:
>
> Bonjour de Montreal,
>
> In another life, I was working for a EMC Test lab
> and we always used the
> step by step procedure which was in the ESD
> Standard. We tested using this
> procedure for years and we did encounter some
> products who failed at low
> level E
The most knowledgeable person on 40-200+ GHz is Mr. Chuck Oleson
(408-778-0491) of OLM Inc. in Morgan Hill CA. I suggest you contact him
for informed answers.
===
Best Regards
Hans Mellberg
EMC Consultant
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. Most EMC engineers have seen those GHz harmonic
emission when processors of 400MHz and higher are used.
===
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Hans Mellberg
EMC Consultant
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-
This
Thank you Ron Pickard;
I find the "Reference to EMC Books" compilation extremely usefull and I
would like to seek your permission to publish it in our local chapter's
monthly publication, "Spectral Lines" serving the SF Bay Area IEEE EMC
community.
Best Regards
Hans
; give up parking space -
> > which is sure to irate somebody. The roof gets a
> little hot, but that only
> > gives you the opportunity to work in your cutoffs,
> and showing up to a
> > meeting with the suits dressed like this is always
> good for a laugh!
> > Gary
rt and Scott:
>
> I agree that the fundamental is the First Harmonic.
>
> Now, to muddy things up some more, how does all this
> discussion square with calling the fundamental Fo?
>
> ;-)
> Ed
>
snip
===
Best Reg
The other part of the discussion revolved around
> even and odd harmonics.
>
> One side says that even harmonics are lower
> amplitude than the odd
> harmonics, the other side says odd harmonics are
> lower amplitude than even
> harmonics.
>
> All discussions assumed non-sinu
ments and exact
wording.
Hans
===
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Hans Mellberg
EMC Consultant
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To cancel your sub
ge. I
reccomend less than 20% for good results.
Best Regards
Hans Mellberg
---"Ing. Gert Gremmen" wrote:
>
> I just connected a wire of approx 30 cm (10") at the end of a 50 ohm
coax
> between core and shield) and plugged into
> my Lecroy scope (1M) . I put a 10 dollar e
in conditions, the charge may not
even built up enough to create any effects.
Hans Mellberg
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This message is coming from the emc-pstc discussion li
areas of the polymer to coins of different voltages. While separating
two charged surfaces from each other, the voltage rises significantly
since the capacitance is being reduced and the conservation of charge
must be preserved which is the basis for tribolectric voltage
generation.
Hope that helps
Hans
A certain German sports car using a certain German fuel injection
system could be made to malfunction in an amuzing way (not to the
sports car operator though!) such as backfire, sputter, smoke, flames
from exhaust pipe, etc., by tractor-trailer operators with their CB
lin-amps when keying on and
The settop CATV and cable-modem I worked on a couple of years ago both
had tuners. Our client in Europe insisted on the EN50013 and ..20 as
they clearly met the requirements.
That was two years ago.
Hans
---Tommy wrote:
>
> Hellow Group.
>
> I confuse the standard of Digital Set-Top Box LUCCE
88 matches
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