I guess the most significant difference is that analyzers normally don't
have a Quasipeak detector which is required for this measurements

Best Regards

Lothar Schmidt

Technical Manager EMC/Radio
BQB
CETECOM Inc.
411 Dixon Landing Road
Milpitas, CA 95035
* +1 408 586 6214
* +1 408 586 6299



-----Original Message-----
From: Ken Javor [mailto:[email protected]]
Sent: Thursday, November 01, 2001 8:21 AM
To: Muriel Bittencourt de Liz; EMC-PSTC List
Subject: Re: Difference between SA and Receiver



Assuming 50/60 Hz power and CE measurements made at a CISPR 16 LISN EMI 
port, the only possible difference I can think of is increased probability
of 50/60 Hz overload with a spectrum analyzer capable of measurements that
low.  If your spectrum analyzer doesn't tune below 9 kHz, that shouldn't be
a problem.  In any case, the CE limits are such that you can easily afford
to put a 20 dB pad on the LISN port and that should stop any overload
effect.  An EMI receiver provides several features different than an
analyzer: increased sensitivity, front end filtering (preselection), and
(typically) a variety of detection modes, although spectrum analyzers are
catching up in this regards.  If you need to make average measurements, this
is more easily accomplished with an EMI receiver.

----------
>From: "Muriel Bittencourt de Liz" <[email protected]>
>To: "EMC-PSTC List"  <[email protected]>
>Subject: Difference between SA and Receiver
>Date: Thu, Nov 1, 2001, 8:15 AM
>

>
> Hello Group,
>
> What are the differences that result using:
>
> 1. A Spectrum Analyzer (SA)
>
> or
>
> 2. A Receiver
>
> When I make measurements of conducted emissions of an equipment??
>
> Best Regards
>
> Muriel
>
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