...@emccompliance.com, 'praveen rao'
p...@tennyson.com.au, 'muriel bittencourt de liz'
mur...@grucad.ufsc.br
Cc: emc-p...@majordomo.ieee.org
Subject: RE: Doubt with conducted emissions measurement
Date: Thu, Dec 28, 2000, 6:27 PM
Hi Ken,
Ok, you caught me exercising a pet peeve (hop up here on the table peeve
: Re: Doubt with conducted emissions measurement
Hi Brent,
Specifically NOT meaning to argue, but only in pursuit of the TRUTH, isn't
the 10 uF feedthrough cap a perfectly well-defined source impedance above,
say 15/20 kHz, where the old MIL-STD-461A/B/C CE03 limit started? Which is
not to say
Javor
--
From: Brent G DeWitt bdew...@ix.netcom.com
To: 'Ken Javor' ken.ja...@emccompliance.com, 'Praveen Rao'
p...@tennyson.com.au, 'Muriel Bittencourt de Liz'
mur...@grucad.ufsc.br
Cc: emc-p...@majordomo.ieee.org
Subject: RE: Doubt with conducted emissions measurement
Date: Tue, Dec 26
with conducted emissions measurement
2) Why does Mr., Rao (or anyone else) feel that the LISN-based measurement
is more accurate than a current probe measurement? I can see pros and cons
to each, myself.
---
This message is from the IEEE EMC Society Product
...@majordomo.ieee.org
Subject: RE: Doubt with conducted emissions measurement
Date: Tue, Dec 26, 2000, 5:26 PM
Hi Muriel and group,
Hope you all had a good Christmas.
Yes, As Chris mentions, there can be problems with coupling/de-coupling
networks.
A classic example is the T-ISNs for conducted emissions
Hi Muriel and group,
Hope you all had a good Christmas.
Yes, As Chris mentions, there can be problems with coupling/de-coupling
networks.
A classic example is the T-ISNs for conducted emissions on telecommunication
lines as per the new EN55022 : 1998
The mains LISN however causing problems is
-Original Message-
From: Muriel Bittencourt de Liz [mailto:mur...@grucad.ufsc.br]
Sent: Friday, December 22, 2000 8:05 AM
To: Lista de EMC da IEEE
Subject: Doubt with conducted emissions measurement
Hello Group!
First of all, I wish a merry christmas and a happy new year for the list
Muriel,
Coupling/Decoupling networks (of which LISN's are a subgroup) can affect DUT
performance. I myself have not experienced this with a conducted emissions
LISN, but I have experienced it with an EFT generator.
We made a product that had an internal thermal printer. We EFT test in
house.
Muriel, this is a very question, and I'll let better qualified people answer
your specific concerns.
Now, if I may add my 2 cents worth of experience in a 'similar' situation
that involved conducted emission on SIGNAL leads: Under certain conditions,
when the required CDN does interfere with
Muriel,
1) Your equipment must be designed to operate from the LISN. It must not
resonate, generate extra ripple, etc. The concept is that EUT sees a low
enough source impedance when connected to any real power distribution system
that it operates in a STABLE mode. That means your input
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