[SI-LIST] Re: Emission
- From: "hansm" <hans.mellberg@xxxxxxxxxxxx>
- To: <BRanjul@xxxxxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Mon, 9 Feb 2004 09:04:32 -0800
You need to sort out the source of those ambients. The purpose of the shield
room is to have adequate margin! It may come in via the wiring for the
lighting or you may have insufficient power distribution filtering or you
may have other wiring entering the chamber that piggy-back the outside
ambient. You should have at least 20 dB of margin to make meaningfull
measurements.
Hans Mellberg
Engineering Manager
BACL, a TCB and an EU CAB
230 Commercial Street
Sunnyvale CA 94085 USA
408-732-9162 x38
408-732-9164 fax
----- Original Message -----
From: <BRanjul@xxxxxxxxxxxxxx>
To: <si-list@xxxxxxxxxxxxx>
Sent: Sunday, February 08, 2004 10:09 PM
Subject: [SI-LIST] Emission
> Dear all,
> Please help me to sort out this problem.
> While testing our equipment in the anechoic chamber in our place, we could
> notice that nearly 30db ambient noise present (say at 100Mhz) in the
> chamber before the equipment is tested.
> Then , if the our equipment fails at 100Mhz for 0.5 db does it really
> fail?
> Or if the equipment passes by 1 db margin, does it really pass ?
>
> Ranju
>
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