The real world lives in the near field.

Bob Heller
3M Product Safety, 76-1-01
St. Paul, MN 55107-1208
Tel:  651- 778-6336
Fax:  651-778-6252
=====================================================================================


                                                                                
                                                       
                      Hans Mellberg                                             
                                                       
                      <emcconsultant@yahoo.c       To:       Cortland Richmond 
<72146....@compuserve.com>                              
                      om>                            "Grasso, Charles" 
<charles.gra...@echostar.com>                                   
                      Sent by:                       ieee pstc list 
<emc-p...@ieee.org>                                                
                      owner-emc-pstc@majordo       cc:                          
                                                       
                      mo.ieee.org                  Subject:  Re: Question on 
Receiver EMI testing..                                    
                                                                                
                                                       
                                                                                
                                                       
                      10/30/2002 10:53 AM                                       
                                                       
                      Please respond to Hans                                    
                                                       
                      Mellberg                                                  
                                                       
                                                                                
                                                       
                                                                                
                                                       




That reminds me of a set-top b-b receiver I was testing long ago. While it
met all
the class B specs both rad and susc., when placed on top of a TV there were
interference issues because of the close proximity! (both from the TV and
from the
set-top!)
Depending on your application, you may often have to test beyond the limits
if your
clientel is to remain satisfied!



=====
Best Regards
Hans Mellberg
Regulatory Compliance & EMC Design Services Consultant
By the Pacific Coast next to Silicon Valley,
Santa Cruz, CA, USA
office:831-454-9450, cell:408-507-9694, fax:831-454-0755

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