Jim,
What about RS422 ports in a DTC 48 or RS423 ports in a DTC72MX?
Not sure about RS423 cable lengths, but I can remember that RS422
in a DTC48 supported up to a 1000m. Mileage will vary!
Most of the HP printers with serial ports support RS422, so
does the 700/9x terminals.
Regards
Fred Metcalf
-----Original Message-----
From: Jim Phillips [mailto:[log in to unmask]]
We have several serial printers that are connected to our
HP3000 via DTC's that are a long distance (more than 100 feet)
from the DTC.