Connecting Devices To Ld Ports - Equinox Systems MEGAPORT Hardware Reference Manual

CHAPTER 4

CONNECTING DEVICES TO LD PORTS

This chapter applies equally to MEGAPORT, MEGAPORT/2 and
MEGAPORT/RS and explains the cabling options which may be used
to connect devices to:
the MEGAPORT 12LD board,
the MEGAPORT 24LD board,
the first group of twelve ports (i.e. ports numbered 1
through 12) on the MEGAPORT 12LD+12CS board. (The
first group of twelve ports on the MEGAPORT 12LD+12CS
board are identical to the corresponding ports on the 12LD
and 24LD boards.)
These ports are all of the LD type and can be used at high speed with
standard RS-232, RS-422 and RS-423 devices for long distance cable
runs without any special devices at the terminal end. In addition, LD
ports have built in surge suppression for protecting the port from
damage due to voltage transients.
NOTE: The information in this chapter should not be used to
connect devices to MEGAPORT 12CS, MEGAPORT 24CS
boards or to connect devices to the second group of twelve ports
on the MEGAPORT 12LD+12CS boards. For information on
connecting to these ports please refer to Chapter 3, Connecting
to CS Ports.
12LD
Connecting Devices to LD Ports
24LD (or 12LD+12CS)
39