I don't think our labs are having a problem, either.  My point is that they 
have signs prohibiting phones past a certain point, and that might be low 
hanging fruit for my next audit.  Are they enforcing the sign?  Nothing was 
said late last month when I did the audit.  Next year - grin!


From: Sterner, David (NY80) [mailto:[email protected]] 
Sent: Tuesday, December 09, 2008 9:18 AM
To: Pettit, Ghery; Luke Turnbull; [email protected]
Subject: RE: Mobile Phones in EMC Labs

Ghery -

Since we develop cellular products in our facility, there is a AT&T
(Cingular) repeater in the hallway adjacent to our 3-m chamber.  When
the preamplifier was external to the chamber the cable screen
transferred 900 MHz onto the graphical output (12-TT-position peak
hold).  The peaks were a nuisance because they exceeded the limit lines
and distracted the EMI software away from real EUT peaks.  

Problem was solved by installing the preamplifier and an RF switch (+12
V relay) inside the chamber.

David Sterner


From: [email protected] [mailto:[email protected]] On Behalf Of Pettit,
Ghery
Sent: Tuesday, December 09, 2008 10:55 AM
To: Luke Turnbull; [email protected]
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 do a quality audit.  :-)  :-)

Ghery Pettit

 

 

________________________________

From: [email protected] [mailto:[email protected]] On Behalf Of Luke
Turnbull
Sent: Tuesday, December 09, 2008 1:22 AM
To: [email protected]
Subject: Mobile Phones in EMC Labs

 

Hi all,

 

Should we ban the use of mobile phones in our test lab (i.e. outside our
test chambers, but in the same EM environment as the sig gens, spectrum
analysers, receivers etc.)?

 

Opinions with reasons would be greatly appreciated.

 

Thanks,

 

Luke Turnbull

 

Conekt is a trading division of TRW Limited 

Registered in England, No. 872948 

Registered Office Address: Stratford Road, Solihull B90 4AX 

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