With all this talk about visualization, I thought I'd toss in my bit.
Here at Datex-Ohmeda we have a small NC mill sometimes used by the RD
group to make small prototype parts, but it often sits idle. Since I have
a spectrum analyzer and a variety of small dimension H and E field probes
I've
RE: EMSCAN (was TV nostalgia/EMI sniffer goggle)
- Original Message -
From: Frank Krozel
To: George Stults ; 'Ehler, Kyle' ; 'Ken Javor' ;
emc-p...@majordomo.ieee.org
Sent: Wednesday, August 08, 2001 12:17 PM
Subject: Re: EMSCAN (was TV nostalgia/EMI sniffer goggle)
Hi George:
You are
- Original Message -
From: Frank Krozel
To: emc-p...@majordomo.ieee.org
Sent: Wednesday, August 08, 2001 12:37 PM
Subject: IEEE EMC Society Website Problem ( FTP'ing)
Hi all:
I am responsible for our local chapter website, and I have been attempting
to FTP news to our membership,
Hi all:
I am responsible for our local chapter website, and I have been attempting to
FTP news to our membership, but my password doesn't seem to be working.
My past contact, dwesterv...@ieee.org is bouncing as well.
Anyone out there have any information on who I need to contact on this issue???
RE: EMSCAN (was TV nostalgia/EMI sniffer goggle)Hi George:
You are most correct the earlier units did only have frequency coverage to
1.0Ghz, but the newer units go up to 2.7Ghz.
Frank Krozel
Frank Krozel
TEL: 630-924-1600
FAX: 630-924-1668
MOBILE: 630-258-5421 (24/7)
TEL: 630-653-9090 Home
John:
I thought I had lost your original statement about CE not having a bearing
on Quality. I would agree also. The statement was made, as I recall, in some
article in Compliance Engineering. Not that UL is a quality mark or RU or
FCC 15 etc. Quality is highly dependant on how your marketing
The sheet material you linked is for DC magnetic fields and it is made by
Magne-Rite® ( http://www.magnerite.com/ http://www.magnerite.com/ ).
Since it uses Ni particle movement I doubt it will even get close to 30Mhz.
One other question, how does one sniff with their eyes?
-doug
We have found the limited resolution of EMCscan to limit (!) its usefulness -
it can't pinpoint IC level problems, for example. Although marketed for
emissions work, it is not usually the best tool if you are hunting down
radiated emissions, since its response to (large) differential-mode
Hi Tim,
Welcome to the fray..
There is in existence a sheet material that exhibits these properties
however, the flux sensitivity may not be sufficient for practical use
with EMI work. I suspect it is for intense near field only.
Here's a link: http://www.wondermagnet.com/dev/magnet34.html
Has
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with the single
I hate to be a spoilsport but I believe we are also missing something which
will react at millivolt or milliamp/meter field intensities. All these
other sensors are reacting to relatively strong stimuli.
--
From: Veit, Andy andy.v...@mts.com
To: EMC-PSTC Discussion Group
You need to keep fields below the NEBS immunity limits, which are pretty
low, IMHO. However, a 300 mW cellphone is not the same danger as a 5 watt
high-band HT.
Cortland
---
This message is from the IEEE EMC Society Product Safety
Technical Committee
I upgraded a chamber at hp and looked at:
1) How to pass the 16 point call up to 3 GHz
2) How to upgrade /change add absorbers
3) Which commercial antenna works best from 26 Mhz - 3 GHz
4) How much power is needed.
5) How well does the signal repeat.
6) Field probes
7) etc.
The lab is
In a past job (10 years ago) another compliance engineer and myself were
discussing how nice it would be to have EMI sunglasses while working on
fixing a particularly noisy and troublesome piece of equipment. The idea
was inspired by the X-ray glasses sold on the back cover of comic books.
Ed,
I don't know of any approved cell phones that can be used within a cental
office. It seems like it would be up to each central office/telco to make that
decision.
As far as field strength from cell phones, 5 to 10 V/m is what I have also heard
As you may know, GR-1089 has an RF immunity
You can get NOM exemption by meeting certain criteria
for specialized equipment.
Fast microprocessors,used in special places ( CO's) and not touched
by non-technical people.
this does not give you a NOM mark, but you get a letter
stating its OK to ship into Mexico based on its specialized
Date: Wed, 08 Aug 2001 12:13:38 +0200
To: umbdenst...@sensormatic.com
From: Paolo Gemma paolo.ge...@icn.siemens.it
Subject: RE: ETSI EMC Standard
I am involved in ETSI
The change was drive by IEC 61000-4-3 that approved this modification to
the basic standards.
A similar change is also in the
Along the lines of EMI sensitive paper...
There is such a thing for viewing magnetic fields, funnily enough. Its
called Magnetic Viewing Paper and McMaster Carr has it for $14.22 for 27
square inches, p/n 5702K21. When the paper is laid over magnets, the paper
shows the outline and shape of
Hi Doug,
NOM-001 includes electrical safety requirements and testing methods for type
approval of household electronic apparatus as TVs, remote control,
microwaves,...
NOM-016 includes electrical safety requirements and testing methods for
electronic apparatus for use in office as fax machines,
Mike,
My understanding is that the designating authority for GSM phones is the
Directorate General of Telecommunications (DGT).
The only one accredited laboratory for the interoperability testing for GSM
phones is the ChungHwa.
Tel: +886-2-2326-2463
Fax: +886-2-2707-9668
Email:
I suppose that can be achieve with some class of liquid crystals embedded
in a polymer medium. The problem is that is the representation in the near
field or just a plane (cross section).
I will prefer a none intrusive gas or vapour that will 'glow' at different
field intensity and colour,
95fbd8b0830ed511b7720002a51363f1319...@exw-ks.ks.lsil.com, Ehler, Kyle
keh...@lsil.com inimitably wrote:
No John, I'm not referring to you. (or anyone else in particular) I dont
know you well enough -yet..lol
I'm just spaking on how we do the job of ensuring that our products meet
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