Hi all, I know this is all hypothetical, but...
I think what's missing from the suggestions is a way to detect directivity of the emissions. So far what has been suggested is an array of detectors each linked to pixels. This would be very efficient at telling you which detectors have been "hit" by EMI. But, how would they be able to detect where the EMI was coming from? (i.e. provide a color coded view of the DUT) Maybe we could take a hint from the phased array radar guys and get a clue to directionality from the phase relationship. Of course, it would have to be reset at each frequency, but it's a start. Chris > -----Original Message----- > From: Ehler, Kyle [SMTP:[email protected]] > Sent: Tuesday, August 07, 2001 8:37 AM > To: 'John Woodgate'; [email protected] > Subject: RE: TV nostalgia > > True, but if the display range and bandwidth was tunable, and shown in > 3-D chroma (similar to thermal imagers) rather than time domain -the > emissions would make sense to the wearer. After all, even modern > spectrum analyzers cannot show full bandwidth without compromising > adjustments. > > -k > > > -----Original Message----- > From: John Woodgate [ <mailto:[email protected]>] > Sent: Monday, August 06, 2001 12:29 PM > To: [email protected] > Subject: Re: TV nostalgia > > > > <[email protected]>, Ehler, > Kyle > <[email protected]> inimitably wrote: > > Doug has touched on what I think would be a great tool for the > > EMI hunter...but rather than a 'sniffer', a 'goggle' similar > > to what Geordi wears that facilitates the direct viewing of EM > radiation. > > > > Ideally, the device would allow adjustable band 'viewing' of the > radiation > > frequency, intensity, polarity and propagation pattern(s). > > Yes, it sounds much more attractive than a sniffer, which would > produce > BAD smells around some equipment. And it isn't technically unfeasible. > > The problem is the poor resolution, even a microwave frequencies, due > to > the wavelength of the emission. At 150 kHz, the wavelength is 2 km, so > > only very BIG things are visible. > -- > Regards, John Woodgate, OOO - Own Opinions Only. > <http://www.jmwa.demon.co.uk> > This message and its contents are not confidential, privileged or > protected > by law. Access is only authorised by the intended recipient - this > means YOU! > The contents may be disclosed to, or used by, anyone and stored or > copied in > any medium. If you are not the intended recipient, please advise the > sender > yesterday at the latest. > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
