Yes. It is called the CEN/CENELEC/ETSI Bulletin. It is published by in
Europe and does exactly what you require.
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Subject: OJ Review Service?
Author: Non-HP-trob (t...@ckc.com) at HP-ColSprings,mimegw5
Punch like a sieve i.e. one hole for each pin insted of a large cut-out. That
reduces the inductance of the power/ground plane. The increased noise coupling
in insignificant compared to the lost benefits of the low plane inductance.
Besides, you reduce the current flow capacity and create
One of the problems on a typical PC is the software its running. If you are
running anything under Windows, then you have the randomness of the housekeeping
functions of the windows OS. Old Billionaire Billy has incorporated many
big-brother features that he won't tell us about and is the
It is not the random amplitude and phase changes that causes the peak,
average or teh quasi-peak readings to vary. Peak is the maximum
reading obtained, period. Average and quasi-peak are filtering
functions with respect to time and they will vary by the content of
the
This is why I like this email service. I learn so much! Thanks to all
of the contributors
Hans
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Subject: Re: Tetanization and fibrillation (was GFI history)
Author: richn-at-sdd
You forgot two major assumptions:
1) The impedance of the water and
2)the impedance of the human in water.
In water, the human has orders of magnitude of lower impedance, and therefore,
the majority of the current will flow through the human assuming there is a path
to ground. It is
Item Subject: COMB Generators
There are several manufacturers with Antenna Research Associates (ARA)
being one of them. Theirs looks like a baby bicon with a calibrated
output.
Hans
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Subject:
I once inherited an outdoor aluminum ground plane 10m OATS. The
contraction and expansion was quite evident and out of spec. We ended
up sawing slots to relieve the TCE warp. The slots 12 inches each, 8
of them per 4'x8' section were aligned in the same direction as to the
Item Subject: Re:RE: test equipment
There is a good way to separate UUT emissions from ambient emissions.
Use 2 antennae. Place the 2nd antenna at least 3x farther away from
the EUT than the 1st antenna. Then use an a/b N-connector switch and
you can then switch between a/b
You may wish to contact Mr. Bob Weiner (310) 545-1190
(71020@compuserve.com) he is a consultant specializing in lasers.
Hans Mellberg
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Subject: LED Safety
Author: Non-HP-WW (w...@dolby.com) at
The FDA Guide for Compliance, answers all your questions. There are
some exemptions to labelling requirements if you are using a class I
OEM unit inside your product. (like a PC, it doesn't repeat the
warnings on the outside).There are no special treatment for test
This post is slightly off topic:
Is anyone familiar with a BBS similar to this concerning
Reliability/QA/Statistical issues?
Thanx in advance
Hans Mellberg
Local Multipoint Distribution Systems
HP, Cupertino CA
Item Subject: We have, under development, a large piece of equipment which
You have a classic case on when to apply the TCF route for comliance.
Contact your friendliest NB of your choice for help. E-mail me for more detailed
information if you wish
Hans Mellberg
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Item Subject: cc:Mail Text
Item Subject: cc:Mail Text
Thank you all who responded. I had failed to mention that this printed
wiring spark-gap has a slot in between the sharp points (electric field
enhancers to facilitate breakdown) and yes, the solder mask is removed so
that only bare copper shows. The creepage is fully
I believe Crown manufactures commercial amplifiers that can be used in
this range.
Good Luck, Hans.
__ Reply Separator _
Subject: Re: Amplifier for RS101 (MIL-STD-462D)
Author: Non-HP-owner-emc-pstc
Item Subject: Low profile Turntable - Help
Yes, contact Sunol Sciences Corporation in Pleasenton CA, (510) 485-9260.
Best Regards
Hans
__ Reply Separator _
Subject: Low profile Turntable - Help
Author: Non-HP-owner-emc-pstc
Those materials, commonly known as polybrominated or polychlorinated
dibenzofurenes, were listed in the hazardous materials directive in a
subsequent OJ release from the original date. I have somewhere a copy of it
but since my move, I have not seen it lately. I will try and get the
directive
Again I will direct your attention to the Guide to the implementation of
Community harmonization directives based on the new approach and the global
approach published by the the European Communities, ISBN 92-826-8584-5.
Under section II, 1. Placing on the market, page 20,
The following are
Raychem Corporation, (Menlo Park, CA) used to make a portable shrink
wrap unit that sensed the corona discharge of the heater wires.
Perhaps the technology used in that project may give you a direction.
Hans
__ Reply Separator
Item Subject: cc:Mail Text
subscribe
I have heard of a case that was levied a fine at Italian customs for not having
the proper CE paperwork in order. Also, that in Germany, especially at computer
shows, the BZT or someone like that, will inspect and randomly ask for samples
to be tested.
Just rumours
Hans
You can view all the labs registered with the FCC and NVLAP approved in the
FCC's public access lins (BBS) at (301) 725-1072
Good luck
__ Reply Separator _
Subject: NVLAP approved test Lab
Author: Non-HP-owner-emc-pstc
You might want to track dowm Chuck Green of the greater San Jose area, formerly
with IMI who was their EMI Engineer. He might know the survivors of these
products.
Hans
__ Reply Separator _
Subject: Re: Spread spectrum clock oscillator
Item Subject: IEC 22G/21/CDV(11-1995)
George,
IEC 22G is the IEC Technical committee on Semiconductor power converters
for adjustable speed electric drive systems. I suspect that the document
you mention may be an internal committee document. Contact the IEC for more
info.
Hans
The answers to all the raised questions and much more can be found in the
official European Commission's:
Guide to the implementations of Community harmonization directives based
on the new approach and the global approach
It is published by the European Commision, Office for Official
Randall;
The routing of 1GHz traces has many obstacles. Following are a few (not an
exhaustive list)
1) dielectric constant value variance
2) cross talk
3) source termination
4) source impedance
4) end-line termination
5) common mode generation
6) component inability to handle 1GHz signals
7)
EN60704 is the CENELEC version of IEC 704. IEC 704 is titled Test Code for
the determination of airborne acoustical noise emitted by household and
similar electrical appliances
I suspect that the are making an unresonable request!
Hans Mellberg
EMC Consultant
__
You can order it from ANSI (212) 642-4900
__ Reply Separator _
Subject: EN414 RISK ANALYSIS FORM IN ENGLISH
Author: Non-HP-owner-emc-pstc (owner-emc-p...@majordomo.ieee.org) at
HP-Boise,mimegw2
List-Post: emc-pstc@listserv.ieee.org
Item Subject: cc:Mail Text
Author: HANS MELLBERG at non-hp-santaclara,om4
List-Post: emc-pstc@listserv.ieee.org
Date:01/09/97 02:03 PM
Hello fellow professionals!
Are there any special safety or EMC marks or declarations required for the
following countries that are different from the
Probably the best filter for the OJ is the CEN/CENELEC/ETSI Bulletin which
for about $400/year only reports matters of our interest plus telecom. The
OJ is about $700/year and mostly deals with other subjects of no interest
to us, and occasionally with standards stuff. The CEN/CENELEC/ETSI
Check 47 CFR part 2 sections 803, 805, 806, 807 and 809. Essentially if your ISM
equipment is classified as a radio frequency device or digital device and
not selling to the US goverment you must comply with the technical requirements
of part 15, or part 18. Part 18 section 121 allows for
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