Thankyou to all those who responded to my probing question. My initial
response to the engineer was to try and characterise the board using near
field probes however he is intent on looking directly at the 3v power rail.
Given this, my primary concern is with protecting the analyser. Since his
f
O'p...@ali.com.au
cc: emc-p...@majordomo.ieee.org, seif...@ali.com.au
Subject: Re: Probing power plane with analyser.
Hi there - The AC LISN will have a very poor performance above about
100MHz don't you think??
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This message is from the IEEE EMC Society Pro
Hi there - The AC LISN will have a very poor performance above about
100MHz don't you think??
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This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
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majord.
From: "Bob Lewandowski"
Picosecond Pulse Labs (www.picosecond.com) manufactures coaxial DC blocks that
operate from 700 Hz to >26 GHz (3 dB BW) and stand off 16 Vdc.
You can also get a .086 in. diameter 'Semi Flex' coax cable from Tensolite/QMI
(www.qmiinc.com). It has tin dipped bare o
Cameron,
Checkout Doug Smith's webpage for some insight on making RF measurements
using various (homemade) probes.
http://emcesd.com/
Good Luck,
George
-Original Message-
From: Cameron O'phee [mailto:O'p...@ali.com.au]
Sent: Wednesday, September 27, 2000 8:59 PM
To: 'EMC - PSTC Forum'
orked, so we went on.
- Robert -
-Original Message-
From: pwmc...@ra.rockwell.com
To: Cameron O'phee
Cc: 'EMC - PSTC Forum' ; Roman Seifert
List-Post: emc-pstc@listserv.ieee.org
Date: Thursday, September 28, 2000 5:50 AM
Subject: Re: Probing power
Cameron:
That's fairly easy to do as long as you:
1. Take all measurments from the same reference points before and after the
changes and
2. Use a DC block on the input to the analyzer ;other wise you may have an
expensive input to replace. Most analyzers inputs are not protected for DC.
Most
Cameron,
If you are looking for a measure of the conducted RF coming off the
board the standard AC LISN works for DC power as well. The voltage probe
per CISPR 16 will also work and gives a standardized impedance that can be
probed from point to point (or if you are looking for a "down and d
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