I found the report Jack refers to on the website, and I think it is well
worth reading.
Regards
- Chris Chileshe
- Ultronics Ltd
-Original Message-
From: Jacob Schanker [SMTP:j.schan...@worldnet.att.net]
Sent: Thursday, June 21, 2001 8:39 PM
To: emc-p...@ieee.org
Subject:
, John Woodgate
inimitably wrote:
><4.3.2.7.2.20010618143751.00b3d...@box.tin.it>, Paolo Roncone
> inimitably wrote:
>>As for interference to broadband receivers (like TV equipment) I remember a
>>Lexmark study published a few years ago that showed no increased
>>interference from modulated clo
<200106182001.qaa14...@interlock2.lexmark.com>, rogle...@lexmark.com
inimitably wrote:
>According to our extensive tests in conjunction with
>Philips Consumer Electronics, digital TV (both COFDM
>and ATSC) is actually less susceptible to interference
>from spread spectrum clocks (ssc) than current
<4.3.2.7.2.20010618143751.00b3d...@box.tin.it>, Paolo Roncone
inimitably wrote:
>As for interference to broadband receivers (like TV equipment) I remember a
>Lexmark study published a few years ago that showed no increased
>interference from modulated clocks vs unmodulated clocks (there was als
According to our extensive tests in conjunction with
Philips Consumer Electronics, digital TV (both COFDM
and ATSC) is actually less susceptible to interference
from spread spectrum clocks (ssc) than current analog
TV (both PAL and NTSC).
Philips has stated in a letter to us that they do not
co
Hi Cyril,
I have a very good (EMC-wise) experience with clock dithering.
I started using the Spread Spectrum Clock Generation (SSCG) technique
(patented by Lexmark) in 1995 when I worked for my previous company.
We made printers and one of our main customers was IBM. They pushed us to
use an S
Hi Cyril,
I have a very good (EMC-wise) experience with clock dithering.
I started using the Spread Spectrum Clock Generation (SSCG) technique
(patented by Lexmark) in 1995 when I worked for my previous company.
We made printers and one of our main customers was IBM. They pushed us to
use an S
Hi Cyril,
Have you tried reducing the current that comes out of
the clock oscillator with a series-resistor ?
( a small ferrite may help also).
Are you sure the clock line does only route on
earth-plane covered areas on the board ?
To determine if the harmonic comes from clock or other signals y
42 PM
Please respond to woods%sensormatic@interlock.lexmark.com
To: emc-pstc%majordomo.ieee@interlock.lexmark.com
cc:(bcc: George Alspaugh/Lex/Lexmark)
Subject: RE: Clock Dithering
Be careful. IBM (perhaps Lexmark now) holds a patent on certain aspects of
this technology.
Ri
Be careful. IBM (perhaps Lexmark now) holds a patent on certain aspects of
this technology.
Richard Woods
--
From: Binnom, Cyril A [SMTP:binno...@ems-t.com]
Sent: Friday, June 15, 2001 10:07 AM
To: emc-pstc
Cc: McBride, James; Wismer, Sam; Mass
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