Newsgroups: alt.comp.hardware.homebuilt
Subject: Re: network card voltage levels
References: <[email protected]>
[email protected] (Paul Boyd) writes:
 
> Hi does anyone have a pointer to information about voltage 
> levels/polarities used by ethernet card. (pref 10baseT)

I have colleced lots of LAN information to 
http://www.hut.fi/~then/mytexts/verkko.html
but that material is written in Finnish.

Hare is some basic informationbout 10base-t ethernet:

The pinout in ethernet card:

1       TXD+
2       TDX-
3       RXD+
6       RXD-

Cable should be 93+-15 ohm twisted pair cable.
The output signal level is 2.5+-0.3V peak to peak.

-- 
Tomi Engdahl ([email protected], http://www.iki.fi/then/)
I maintain electronics and PC hardware web pages at
http://www.hut.fi/Misc/Electronics/