22 Aug
1997
22 Aug
'97
2:30 p.m.
Tony Duell wrote:
Maybe I should write a HOW-TO on linking RS232 devices
to current-loop
ports.
I have a couple of LA-36s DECWriters that can use either RS-232 or
current-loop. When I got my first LA-36, I owned a printed circuit board
shop. After looking at the RS-232 to current loop adapter board, it looked
easy enough to copy so I made up probaby 6 or so (got one in front of me
now.) Basically all they contain are two chips (1488 and 1489), a couple of
diodes, and a couple of capacitors. It made it easy to convert my other
DECWriter from current loop to RS-232. If anyone needs one, I may still
have an unstuffed one around someplace.