Hello Michael,

Is it possible you are confusing the chamber manufacturer's spec for a
volume that will comply with  NSA requirements with the plane that will meet
the uniform field spec?  When we were seeking bids for a compact chamber for
immunity testing, some of the quotes also indicated volume characteristics
for emissions, but no one claimed more than a plane for immunity.  For what
its worth . . .

Best regards,

Don Umbdenstock
Sensormatic Electronics Corporation

> ----------
> From:
> [email protected][SMTP:[email protected]]
> Reply To:     [email protected]
> Sent:         Thursday, April 05, 2001 6:23 PM
> To:   [email protected]
> Subject:      IEC 61000-4-3
> 
> 
> Collogues,
> 
>       In this specification, is it stated anywhere if the unity field is a
> volume ( 1 cubic meter) or is it a plane location (the calibration plane)?
> 
> I'm having questions raised about rotating the EUT (in 90 degree
> increments)
> (which now has us over testing the EUT because it is closer to the antenna
> by 0.3m at the 90 degree point) or under testing when tested at 270
> degrees?
>  I thought I had read somewhere that the unity field was the 1 cubic meter
> box at the (80cm) table top centered and aligned with the calibration
> plane?
> 
> > Michael Sundstrom
> > Product Test Technician EMC
> > Nokia Mobile Phones, Dallas PCC
> > 
> > *   Email   [email protected]
> > %  Desk  (972) 374-1462
> > *Mobile  (817) 917-5021
> > * Fax  (972) 374-0901    
>       amateur call:  KB5UKT
> 
> 
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