[Ronja] Modulation at lower frequencies, CdRom lasers.

[Arun Krishnan]

Hi,

No,

You can't change clockrate without breaking ethernet compatibility.

And no, please don't use a CD-ROM LD. Please have some concerns over eye
safety for yourself and others. The laser beam is invisible and you
won't even know if you're about to look at a reflection.

Regards,
Arun

----- Original message -----
From: "Saad Shakeel" <hybrid.parameter at yahoo.com>
To: "Twibright Ronja" <ronja at lists.pointless.net>
Date: Wed, 16 Jan 2008 07:19:35 -0800 (PST)
Subject: [Ronja] Modulation at lower frequencies, CdRom lasers.

Greetings every one,
   
  I was wondering that can we modulate the Ronja at a frequency lower
  than 1Mhz?
  Would it still remain ethernet compatible (slowing of data rate not a
  problem here)?
  I just cannot find any LED here with less than 1 microsecond risetime.
   
  Some one suggested that i use the laser diode of a Cd Rom. Ignoring
  the safety concerns for a while, i'm sure it can handle the higher
  modulation speeds but i'm not too sure about the changes we'll have to
  make in the circuits and the resulting range of it?
   
  Any ideas?
   
  Thanks,
   
  Saad

       
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