From my experience, I would seldom expect the current probe and the
LISN to show the same answer. The big difference is that the current
probe is looking at a fairly random termination impedance compared to
the "Line Impedance Stabilization Network", which is reasonably stable
in its design. An interesting experiment is to use the CM/DM choke on a
power cord plugged into a LISN and examine the differences,
On 12/17/2024 4:27 PM, Ken Wyatt wrote:
We’ll need a lot more information on what you’re testing, the test
setup configuration and how you’re measuring DM and CM. Can you share
some photos or screen captures?
Usually there will be a difference between DM and CM current spectral
response. Now Line and Neutral from a LISN will like look the same
typically.
Kenneth Wyatt
Windsor, CO
On Dec 17, 2024, at 13:46, am...@westin-emission.no wrote:
Clamp is ok for investigate DM and CM currents. LISN for formal
testing at lab.
Right now, the plots of CM and DM currents are almost equal over the
whole spectrum (10k – 30MHz). Surprise?
In the same setup, using a LISN, the spectrum is quite different
regarding peaks and waveform.
I know the information from this test is defective, but do you have a
first thought anyway?
BR
Amund
------------------------------------------------------------------------
This message is from the IEEE Product Safety Engineering Society
emc-pstc discussion list. To post a message to the list, send your
e-mail to EMC-PSTC@LISTSERV.IEEE.ORG
All emc-pstc postings are archived and searchable on the web at:
https://www.mail-archive.com/emc-pstc@listserv.ieee.org/
Website: https://ewh.ieee.org/soc/pses/
Instructions: https://ewh.ieee.org/soc/pses/list.html (including how
to unsubscribe) <https://ewh.ieee.org/soc/pses/list.html>
List rules: https://ewh.ieee.org/soc/pses/listrules.html
For help, send mail to the list administrators:
Mike Sherman at: msherma...@comcast.net
Rick Linford at: linf...@ieee.org
For policy questions, send mail to:
Jim Bacher at: j.bac...@ieee.org
------------------------------------------------------------------------
To unsubscribe from the EMC-PSTC list, click the following link:
https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
------------------------------------------------------------------------
This message is from the IEEE Product Safety Engineering Society
emc-pstc discussion list. To post a message to the list, send your
e-mail to EMC-PSTC@LISTSERV.IEEE.ORG
All emc-pstc postings are archived and searchable on the web at:
https://www.mail-archive.com/emc-pstc@listserv.ieee.org/
Website: https://ewh.ieee.org/soc/pses/
Instructions: https://ewh.ieee.org/soc/pses/list.html (including how
to unsubscribe) <https://ewh.ieee.org/soc/pses/list.html>
List rules: https://ewh.ieee.org/soc/pses/listrules.html
For help, send mail to the list administrators:
Mike Sherman at: msherma...@comcast.net
Rick Linford at: linf...@ieee.org
For policy questions, send mail to:
Jim Bacher at: j.bac...@ieee.org
------------------------------------------------------------------------
To unsubscribe from the EMC-PSTC list, click the following link:
https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
-
----------------------------------------------------------------
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussion list. To post a message to the list, send your e-mail to
EMC-PSTC@LISTSERV.IEEE.ORG
All emc-pstc postings are archived and searchable on the web at:
https://www.mail-archive.com/emc-pstc@listserv.ieee.org/
Website: https://ewh.ieee.org/soc/pses/
Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to
unsubscribe)
List rules: https://ewh.ieee.org/soc/pses/listrules.html
For help, send mail to the list administrators:
Mike Sherman at: msherma...@comcast.net
Rick Linford at: linf...@ieee.org
For policy questions, send mail to:
Jim Bacher: <j.bac...@ieee.org>
_________________________________________________
To unsubscribe from the EMC-PSTC list, click the following link:
https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
