If you ban cell phone use in an EMC lab then you should also consider doing so
in adjacent locations - one side of a door is much the same as the other!
Vic Gibling
Vagabond Compliance Engineer
2008/12/9 Luke Turnbull luke.turnb...@trw.com
Hi all,
Should we ban
In message
4e373bdd0812100200m73f17b59u52351eefccdd7...@mail.gmail.com, dated
Wed, 10 Dec 2008, Vic Gibling vicgibl...@googlemail.com writes:
If you ban cell phone use in an EMC lab then you should also consider
doing so in adjacent locations - one side of a door is much the same as
the
Luke,
Yes, because:
The phone radiation might interfere during
emission tests by
entering the chamber via a penetration
interfering with external support equipment
create spurious emissions by creating secondary mixing products
immunity tests by
being
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Haynes,
Tim
(SELEX GALILEO, UK)
Sent: Wednesday, December 10, 2008 5:10 AM
To: Luke Turnbull; emc-p...@ieee.org
Subject: RE: Mobile Phones in EMC Labs
Hi Luke,
My opinion is yes. Years ago when I worked for a commercial lab using a RS
receiver, the pre-scan data pick up noise from a cell phone. The lab bans the
use of cell phones (all cell phones have to be off).
Regards,
Grace
On 12/9/08, Luke Turnbull luke.turnb...@trw.com wrote:
...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Grace Lin
Sent: Tuesday, December 09, 2008 8:08 AM
To: emc-p...@ieee.org
Subject: Re: Mobile Phones in EMC Labs
Hi Luke,
My opinion is yes. Years ago when I worked for a commercial lab using a RS
receiver, the pre-scan data pick up noise from
may or may not be the problem.
--- On Tue, 12/9/08, Kunde, Brian brian_ku...@lecotc.com wrote:
From: Kunde, Brian brian_ku...@lecotc.com
Subject: RE: Mobile Phones in EMC Labs
To: Grace Lin graceli...@gmail.com, emc-p...@ieee.org
Date: Tuesday, December 9, 2008, 8
In message
0ed66cd2c9bd0a459d54fb9119a60567d06...@mailserver.lecotc.com, dated
Tue, 9 Dec 2008, Kunde, Brian brian_ku...@lecotc.com writes:
Our HP Receiver will pick up cell phone emissions from 50 feet away
even with the input cables disconnected (weird)
Maybe the filter on the mains input
Of John
Woodgate
Sent: Tuesday, December 09, 2008 10:01 AM
To: emc-p...@ieee.org
Subject: Re: Mobile Phones in EMC Labs
In message
0ed66cd2c9bd0a459d54fb9119a60567d06...@mailserver.lecotc.com, dated
Tue, 9 Dec 2008, Kunde, Brian brian_ku...@lecotc.com writes:
Our HP Receiver will pick up cell
I would. Shielding of receivers isn’t perfect. We have signs banning them
in our labs. Don’t know how well enforced it is. :-) Guess I’ll have
to check the next time I do a quality audit. :-) :-)
Ghery Pettit
From: emc-p...@ieee.org
Hi all,
just a thought If you're an accredited lab you are supposed to
evaluate your working environment: I'd include Cell phones in this.
Now, I hate banning things, so my first thought is that whoever is
running testing should know about mobile Transmitters, from Door openers
to cell
,
Ghery
Sent: Tuesday, December 09, 2008 10:55 AM
To: Luke Turnbull; emc-p...@ieee.org
Subject: RE: Mobile Phones in EMC Labs
I would. Shielding of receivers isn't perfect. We have signs banning
them in our labs. Don't know how well enforced it is. :-) Guess I'll
have to check the next time I
: Sterner, David (NY80) [mailto:david.ster...@honeywell.com]
Sent: Tuesday, December 09, 2008 9:18 AM
To: Pettit, Ghery; Luke Turnbull; emc-p...@ieee.org
Subject: RE: Mobile Phones in EMC Labs
Ghery -
Since we develop cellular products in our facility, there is a ATT
(Cingular) repeater
a button, get a cup of coffee. Man I hate
that.
The Other Brian
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Derek
Walton
Sent: Tuesday, December 09, 2008 11:21 AM
To: Pettit, Ghery
Cc: Luke Turnbull; emc-p...@ieee.org
Subject: Re: Mobile Phones in EMC Labs
Hi all,
just
did
the old way in really interesting places? Like, Adak? :-)
Ghery
From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Tuesday, December 09, 2008 9:45 AM
To: Derek Walton; Pettit, Ghery
Cc: Luke Turnbull; emc-p...@ieee.org
Subject: RE: Mobile Phones in EMC Labs
You bring up a good point
or may not be the problem.
--- On Tue, 12/9/08, Pettit, Ghery ghery.pet...@intel.com wrote:
From: Pettit, Ghery ghery.pet...@intel.com
Subject: RE: Mobile Phones in EMC Labs
To: Kunde, Brian brian_ku...@lecotc.com, Derek Walton
lfresea...@aol.com
Cc: Luke Turnbull
I would say that if you experience problems then – yes. If not – then no.
If you are having problems then you probably need to do a little research
and see if there any issues with your lab.
Chas.
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On
, December 09, 2008 12:50 PM
To: Kunde, Brian; Derek Walton
Cc: Luke Turnbull; emc-p...@ieee.org
Subject: RE: Mobile Phones in EMC Labs
Ah, for the good old days when the receiver was tuned by hand, one hand
on the tuning knob, the other on the IF gain / slide back / RF
attenuator. Note the level
Turnbull; emc-p...@ieee.org
Subject: RE: Mobile Phones in EMC Labs
Today, I walk by the test station; the EUT has fallen off the table and
is on fire, the sprinklers have shot down through the ceiling spraying
950 gallons of water per minute in to the chamber, the mast rope got
twisted on the pulley
[mailto:emc-p...@ieee.org] On Behalf Of Pettit,
Ghery
Sent: Tuesday, December 09, 2008 10:47 AM
To: Kunde, Brian; Derek Walton
Cc: Luke Turnbull; emc-p...@ieee.org
Subject: RE: Mobile Phones in EMC Labs
At least your tech was there. We'd have him doing something else while the
chamber took care of itself
In message 00b201c95a35$f528d430$df7a7c90$@com, dated Tue, 9 Dec 2008,
dward dw...@atcb.com writes:
Automation, without proper control, only gives a lot of paper with
meaningless unsubstantiated number.
Doesn't matter, because most of the test methods are either artificial
or unrepeatable,
11:58 AM
To: emc-p...@ieee.org
Subject: Re: Mobile Phones in EMC Labs
In message 00b201c95a35$f528d430$df7a7c90$@com, dated Tue, 9 Dec 2008,
dward dw...@atcb.com writes:
Automation, without proper control, only gives a lot of paper with
meaningless unsubstantiated number.
Doesn't matter
getting trough when more then 4-5 cables protrude
our rooms wall, and filtering is done “on the fly….”.
Gert Gremmen
Van: emc-p...@ieee.org [mailto:emc-p...@ieee.org] Namens Pettit, Ghery
Verzonden: dinsdag 9 december 2008 16:55
Aan: Luke Turnbull; emc-p...@ieee.org
Onderwerp: RE: Mobile Phones
In message 00bc01c95a3b$6e8d8af0$4ba8a0d0$@com, dated Tue, 9 Dec 2008,
dward dw...@atcb.com writes:
the numbers can be reproduced within a reasonable expectations
But what are 'reasonable'? Just one example, a cable can be moved and
change an emission level by 10 dB; this is not weird, it's
Similar problem in our lab. The signal path between the cell tower and the
cell phone is so weak that the output from the cell phone is near max (my cell
phone battery drains pretty quickly as a result) which makes it easier for the
analyzer to pick it up. Better quality cables have helped, but I
of
magnitude larger than CDMA.
But what about in the lab environment?
Best Regards,
Patrick.
p.con...@hp.com
281-514-2259
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Bob Richards
Sent: Tuesday, December 09, 2008 3:46 PM
To: ieee
Subject: RE: Mobile Phones
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