,
Barry Ma
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Original Text
From: ed.pr...@cubic.com, on 10/7/98 9:34 AM:
From: Bailin Ma b...@namg.us.anritsu.com
Subject: RE: Grounding of screen room
Date: Tue, 6 Oct 98 14:35:43 PDT
To: emc-p...@ieee.org, TREG t...@world.std.com
Cc: Mekonen Buzuayene
Hi Group,
Do you know where I should go for renting a EFT/B Generator to run
EN61000-4-4 Test?
Thank you.
Best Regards,
Barry Ma
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Hi Lauren,
It is my understanding that properly grounding the screen room is important
in Conducted emission test and have little effect on Radiated emission
test. The way you described is a very good and simple method for evaluating
the shielding effectiveness (SE) of the screen room. The
Hi Michael,
(1) On the cover of NIS 81 I found NAMAS Executive, National Physical Lab,
Teddington, Middlesex, TW110LW, England Tel: 081-943-7140 Fax:
081-943-7134, Telex: 262344 NPLG
(2) Try http://physics.nist.gov/cuu/Uncertainty/index.html
Best Regards,
Barry Ma
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Hi,
Ed Price said: I have heard of active cancellation equipment which can
generate a phase shifted image of the offending signal and locally radiate
this signal so as to create a limited null zone. How big of a null zone,
the uniformity of cancellation, the stability and agility of the
Hi all,
I have a hypothetical question about the compliance liability.
A: PC maker
B: Monitor maker
C: Customer
Suppose C got injured due to the explosion of the monitor when he was using
the computer. A purchased large volume of monitor from B. The whole PC,
including the monitor, was shipped
Yes Douglas, CB scheme is only related to Safety and has nothing to do with
EMC and Telecom. --Barry Ma.
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Original Text
From: Douglas Mckean dmck...@corp.auspex.com, on 9/15/98 5:36 PM:
Well, this has been rather informative, but
the CB scheme as I understand it is specific
about
Page 18, ANSI C63.4-1992
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Original Text
From: Muriel Bittencourt de Liz mur...@inep.ufsc.br, on 9/15/98 10:33
AM:
Hello
I'd like to know if anyone could pass me the schematic of the LISN used
for CISPR22 measurements, with the value of inductors, capacitors and
resistors.
Thanks
ANSI 63.4
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Original Text
From: PostOgFjarskiptast: hjalmar arnason hjal...@pta.is, on 9/10/98
11:04 AM:
Greetings everyone,
I'm in the middle of building an OATS ( open area test site ) for radio
transm. equipment and quite of lot of questions keep coming up which I
can't answer.
Hi Roger,
Just a reminder.
3/1/98 to 7/1/01 is the transition period of time for EN50082-1:1997 to
replace EN50082-1:1992 and others.
Best Regards,
Barry Ma
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Original Text
From: roger...@astec-asia.com, on 9/9/98 2:59 PM:
To:
If I want to certify my product to meet the
in the Generic standard
takes
preceident over the criteria in the basic standard, so there really is no
conflict even though they do differ.
--
From: Bailin Ma[SMTP:b...@namg.us.anritsu.com]
Reply To: Bailin Ma
Sent: Thursday, September 03, 1998 12:17 PM
To: emc-p
It also depends on the cabinet design. I dealt with a desktop case a few
years ago. The design idea is that the top pressure would make the case
more tighten. It did not need additional fingerstocks even though the
cabinet metal was as thin as others.
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Original Text
From: PRYOR
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Original Text
From: Mekonen Buzuayene@MMDILAB@ACUS, on 9/4/98 9:51 AM:
To: Bailin Ma@MMDILAB@ACUS
Hello Barry,
I agree with both of your respondents indicating that first the generic
standard is open for interpretation and secondly that the generic standard
has precedence over
Hi group,
There is a paragraph of 6 Performance criteria on Page 5 of EN
50082. It describes Performance criterion A, B and C.
On the other hand, there is a paragraph of 9 Test results and test
report in 1000-4-2, 1000-4-3, 1000-4-4, 1000-4-5, 1000-4-6 and so on. It
asks us to
Hi,
It seems to me that there is a misprint with my copy of IEC 1000-4-2:1995.
Page 33
2) temporary degradation or less of should be corrected to
2) temporary degradation or loss of
In other words, less = loss
What do you think of this?
Radiated Electromagnetic Field from Digital Radio Telephones - Immunity
Test
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Original Text
From: miksher...@aol.com, on 7/21/98 7:11 AM:
Quick question: what's the title/subject matter of ENV 50204?
thanks!
Mike Sherman
FSI International
miksher...@aol.com
or
msher...@fsi-intl.com
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Original Text
From: Chase Wurz cw...@email.msn.com, on 7/21/98 8:46 AM:
To:
Cc:
Q: I have similar question. Those Accelerated Stress Tests (AST) are
significantly important for the satellite and space shuttle designers.
Are they of the same importance to those electronic systems
And, the Reliability Engineering issues are DESCRIBED on any web sites?
Thanks.
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Original Text
From: Tony Reynolds reyno...@pb.com, on 7/7/98 1:23 PM:
Does anyone know if there is a Reliability Engineering group similar
to this EMC/Safety group currently on the
I agree. Thanks for the organizers.
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Original Text
From: Douglas Mckean dmck...@corp.auspex.com, on 6/2/98 2:24 PM:
To:
I'd just like to say that it was nice to
finally put some faces to the names.
Thought it went very well.
Hi Gert,
As far as I know, most of test labs think more than 1 meter is a reasonable
length of cable in the real life. They don't use at least 3 meters. But I
agree with what you said about low frequency emission.
Regards,
Barry Ma
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Original Text
From: Ing. Gert Gremmen
Hi,
Is anybody kind enough to give me a hint where I should go to find
information on how to calibrate antenna factors of three antennas by using
those three antennas themselves.
Thank you.
Best Regards,
Barry Ma
408-778-2000 x4465
408-778-0239 Fax
Hi All,
To have better repeatability of measurements on our internal Open Area Test
Site (OATS) and compare the measurements between different test sites, we
would like to buy a Comb Generator. Does anybody have related experience
and knowledge about the product?
Thank you very much in
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