Grace,
I believe you already have the answer on the bare minimum distance from
the quiet zone to the wall according to the emissions standards from
John Woodgate. However, that only answers what is required by the
standard as opposed to what spacing is needed to have an effective chamber.
Gener
CISPR 22 refers to CISPR 16-2 for the test method, so they should be identical.
Not sure where TDK gets the 30 cm limitation for floor mounted EUTs, but it
may be their interpretation of the third paragraph of Section 8.2 of CISPR
16-1-4, Edition 2.0.
No height scan, the antenna is position
Ghery,
How does the test method in CISPR 22 and the method in CISPR 16-2 differ or do
they concur with one another?
I was told by TDK that the floor absorber cannot be any taller than 30cm (12
inches) for testing emissions on floor mounted EUTs but the most common
absorber for Immunity testing
The Other Brian,
CISPR 22, Edition 5.0, Amendment 1 was published in 2005. It added limits for
radiated emissions from 1 GHz to 6 GHz, along with the test method.
The test method differs from ANSI C63.4. No height scan of the antenna is
performed unless the EUT is taller than the 3 dB b
Group,
In a large chamber, is emissions testing over 1GHz performed in a "Free Space"
setup with absorbers on the floor or it is performed with a reflective floor
as has been the method for FCC for years now? What is the current status in
this regards? Has a set test setup been established?
I
Thanks! I intially thought of EN60669-1. It does not contain a lot of data
processing circuits.
From: John Woodgate
To: emc-p...@ieee.org
Sent: Friday, December 7, 2007 4:49:38 PM
Subject: Re: dimming module
In message <735933.5135...@web58308.mail.re3.yahoo.com>, dated Fri, 7
Dec 2007, Shawn
The following seven new versions of Chinese GB standards for hand-held
motor-operated electric tools took effect September 1, 2007. A grace period
for trasition from an old version to a new version of standard ends August 31,
2008.
GB 3883.3-2007 (identical to IEC 60745-2-3:2006 Ed.2)
S
In message
<2a93eb060712100455l6ef003bcgb58dc16c84b35...@mail.gmail.com>, dated
Mon, 10 Dec 2007, Grace Lin writes:
> Clause 5 of EN 50147-2: 1996 states:
>
>"The vertical and horizontal polarization measurements in the rear
>position may be omitted if the closest point of the construction an
Dear Members,
Is there any minimum distance requirement between the edge of turntable (quiet
zone) and the tip of absorbers in a 3m semi-anechoic chamber (interior
metal-to-metal dimensions of 28'x18'x18')? I get an impression that one meter
is required. I didn't find this distance requirement
Amund
I would recommend the VR37 series from Vishay BC Components,
http://www.vishay.com/docs/28733/vr37.pdf
These were originally a Phillips product, and carry most of the
certifications you might require.
Best regards
Neil R. Barker CEng MIET HonFSEE MIEEE
Manager
Quality Engineering
e2v
Looking for 1 Mohm resistor to be installed between the phases in a
230V net filter.
Any recommandadtions (type, manufactur, etc) for such resistor?
Best regards
Amund Westin
OsloNorway
-
This message is from the IEEE Product Safety Engineering Society
emc-pstc discussion list.Website: htt
The following is a document received from the FCC concerning measurements
above a gig. Just thought it may be of interest to some.
Bob Heller
3M EMC Laboratory, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
==
Fede
Hi Sudhakar,
All electrical products will be involed in this regulation.
Company need to build up a recycle system to collect wasted eqipments
This regulation is only a concept, it doesn't mention annual fee...
Regards,
Zhang, Haifeng
发件人: Sudhakar Wasnik [mailto:sudhakar.was...@san
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