This is an area where the approach first advocated (as far as I know) by Dr. Balint Szentkuti makes a lot of sense: control emissions from wires/cables by means of control of common mode conducted emissions on those wires/cables. I take it a step further (or perhaps less drastically, since he said replace all RE measurements with CE) to say: measure radiated emissions from the small unit either without cables attached or after making the wires pass their requirements.
> From: "Charles Grasso" <[email protected]> > Reply-To: "Charles Grasso" <[email protected]> > Date: Sat, 14 Feb 2004 13:28:07 -0800 > To: "Derek Walton" <[email protected]> > Cc: "John Woodgate" <[email protected]>, <[email protected]> > Subject: RE: Speaking of limits above 1GHz > > > Great win - especially over City! > > Point taken re: wall warts and so on. > We are particularly interested for wireless remotes.. > > -----Original Message----- > From: Derek Walton [mailto:[email protected]] > Sent: Saturday, February 14, 2004 11:28 AM > To: Charles Grasso > Cc: John Woodgate; [email protected] > Subject: RE: Speaking of limits above 1GHz > > > HI Chas, > > I have a problem with this small products thing.... > > Most "small products" have chargers, adapters etc that hook into them. > Thus, some 4 to 6 feet of "strung out" wire attaches to the device. It > IS NO LONGER as small product. > > Examples that come to mind: > > A PDA that can be powered and used at the same time. > > A cell phone, that can be charged AND/OR hooked to a PC should be tested > as such. > > Any other device that uses a wall wart. > > Unless the device can't be powered up while charging, then it shouldn't > classify as a small device. > > Good win today <G> > > Cheers, > > Derek. > > Charles Grasso wrote on 2/14/2004, 1:05 PM: > >> >> Good point John, >> >> To be fair the ANSI committee is looking into this - we're at 11 years >> and >> counting. >> >> The GTEM is a VERY desirable option for small products i.e. wireless. >> >> I hope this is resolved as soon as possible. > > > -- > Derek N. Walton > L F Research > Poplar Grove, IL61065, USA > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ieee-pses.org/ > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: [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.ieeecommunities.org/emc-pstc > This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [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.ieeecommunities.org/emc-pstc
