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From: paolo.ronc...@compuprint.it
[SMTP:paolo.ronc...@compuprint.it]
Sent: Monday, March 20, 2000 5:21 AM
To: emc-p...@ieee.org
Subject:RE: Dithered clocks and EMC - BEWARE
I have a very succesfull experience with SSCG (Spread Spectrum Clock
I have a very succesfull experience with SSCG (Spread Spectrum Clock Generation)
that is a patented technology used to intentionally spread the energy of
oscillators and clock signals and any signal derived from the clock. I am sure
Keith Hardin knows it first-hand because he is one
Keith Hardin wrote:
The output spectrum is a series of stationary harmonics
spaced at 30kHz apart
This is very similar to a problem I had with
PLL in a product once. Major spike at the
main frequency coming through with a picket
fence on either side spaced out by the freq.
of the
@interlock.lexmark.com
To: macy%california@interlock.lexmark.com
cc: emc-pstc%ieee@interlock.lexmark.com (bcc: Keith Hardin/Lex/Lexmark)
Subject: RE: Dithered clocks and EMC - BEWARE
Robert, and the group,
Although I have only limited experience (1 instance) with dithered clocks
vulnerable?). Hopefully, there are others
on this forum that can explain.
Jack Cook,
Xerox Corp
-Original Message-
From: Lacey,Scott [mailto:sla...@foxboro.com]
Sent: Friday, March 17, 2000 8:19 AM
To: 'Robert Macy'
Cc: 'emc-p...@ieee.org'
Subject: RE: Dithered clocks and EMC - BEWARE
To: macy%california@interlock.lexmark.com
cc: emc-pstc%ieee@interlock.lexmark.com (bcc: Keith Hardin/Lex/Lexmark)
Subject: RE: Dithered clocks and EMC - BEWARE
Robert, and the group,
Although I have only limited experience (1 instance) with dithered clocks, I
thought that I might share
Robert, and the group,
Although I have only limited experience (1 instance) with dithered clocks, I
thought that I might share that experience with the group. I had a product
that was failing radiated emissions at one particular frequency with a
vertical antenna orientation. I tracked the problem
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