Date   : Sun, 05 Jul 2009 11:21:12 +0100
From   : acorn@... (Andy Ford)
Subject: econet bridge protocol

Phil Blundell wrote:
>
> On that latter subject, does anybody happen to have a link to the
> schematic for an SJ-style plugin terminator to hand?
>
> p.
>   

I have this saved in a .text file, I used it to make my own terminators. 
I cannot credit the author as I cannot remember where I got it from, 
I've had it for a ages. Hope it helps :)

A three-resistor divider chain, 1K0 at the top, 220R in the middle, 1K0 
at the bottom, connected to ground (pin 2)

Data+ (pin 1) goes to the top of the 220R, Data- (pin 4) goes to the 
lower end.

A pair of 56R resistors goes from each of Clock+ (pin 3) and Clock- (pin 
5) to the top of the upper 1K0.

A 10 uF electrolytic goes from the junction of the 2 x 56R and upper 
1K0, to ground.


Andy. :)