From mms at max-sievers.name  Sun Oct 30 20:25:03 2011
From: mms at max-sievers.name (Max Moritz Sievers)
Date: Sun, 30 Oct 2011 21:25:03 +0100
Subject: [Ronja] Distance between Twister2 and DTE
Message-ID: <201110302125.04878.mms@max-sievers.name>

Dear developers,

I don't understand why the RJ45 jack has to be plugged directly into the 
computer or switch and why the cable cannot exceed 1 or 2 meters. Would it 
make any difference if I use optical fibers (using a converter at the end of 
this RJ45 jack)?

-- 
Yours sincerely,
Max Moritz Sievers


From russ at coldstonelabs.org  Sun Oct 30 21:38:45 2011
From: russ at coldstonelabs.org (Russell Valentine)
Date: Sun, 30 Oct 2011 16:38:45 -0500
Subject: [Ronja] Distance between Twister2 and DTE
In-Reply-To: <201110302125.04878.mms@max-sievers.name>
References: <201110302125.04878.mms@max-sievers.name>
Message-ID: <4EADC3E5.9090508@coldstonelabs.org>

On 10/30/11 15:25, Max Moritz Sievers wrote:
> Dear developers,
> 
> I don't understand why the RJ45 jack has to be plugged directly into the 
> computer or switch and why the cable cannot exceed 1 or 2 meters. Would it 
> make any difference if I use optical fibers (using a converter at the end of 
> this RJ45 jack)?
> 


>From what I understand it is because the RONJA isn't exactly ethernet
spec it doesn't contain the proper magnetics or supporting circuitry to
get the 100 meters or so that you would usually expect from ethernet.
Instead it is using a RS485 receiver which has a different max distance
requirement to get 10Mbps.

Might work, guess depends on the converter, or if you just had another
switch?


Russell Valentine