You might want to track dowm Chuck Green of the greater San Jose area, formerly with IMI who was their EMI Engineer. He might know the survivors of these products. Hans
______________________________ Reply Separator _________________________________ Subject: Re: Spread spectrum clock oscillator Author: Non-HP-owner-emc-pstc (owner-emc-p...@majordomo.ieee.org) at hp-boise,shargw2 List-Post: emc-pstc@listserv.ieee.org Date: 02/18/97 02:33 PM There was an article on these in the 1994 IEEE Sym on EMC. It was written by 3 authors from "Lexmark International, Inc.", Lexington, KY. So, if you can track them down you might get a lead. In the article they have a picture of an IMI chip, BTW. I have looked at emissions from a variety of personal computers with a spectrum analyzer over the last few years and they all seem to have the characteristic, wide-band, flat-top waveform that "SSCGs" produce. So, I would guess that IMI isn't the only one that makes these. I, for one, would also be very interested in having the names of some vendors and information on SSCG effectiveness. Max Kelson mkel...@es.com %> %>Does anyone know of a source for a spread spectrum clock oscillator. %> We have a sample of a 20MHz spread spectrum oscillator that we find %> reduces radiated emissions readings from our products by several dB. %> The company name was IMI in Milpitas, California, but no longer %> exists. Any leads to a similar product would be greatly appreciated. %> %>Thanks, %>Darrell Upson %>Xerox ColorgrafX Systems, Inc.
