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CHAPTER 4: Installation
4.2 Connecting to Parallel Hardware
After connecting the twisted-pair
line to the Parallel Line Driver
transmitter and receiver, you are
ready to connect the units to your
parallel hardware. The following
steps explain this process:
1. Plug the DB25 male connector
on the Parallel Line Driver
transmitter directly into the
parallel port of the sending
device (which is normally a PC,
terminal, host, or similar DTE).
NOTE
If you cannot plug the
transmitter directly into the
parallel port, use a straight-
through DB25 parallel cable
of the shortest possible
length. We recommend 6 feet
(1.8 m) or less.
2. The Parallel Line Driver receiver
is available with a 36-pin
Centronics male connector,
designed for direct connection
to the Centronics port of a
parallel printer.
NOTE
If you cannot plug the
receiver directly into the port,
use a straight through cable
of the shortest possible
length. We recommend 6 feet
(1.8 m) or less.
4.3 Operating the Parallel Line
Driver
Once the transmitter and receiver
have been connected to each other
and to their corresponding parallel
input and output devices, you are
ready to operate the units. Make
sure that the BUSY/ACK switches
on both units are set the same way.
Otherwise, the units should function
transparently, just like a cable. There
is no ON/OFF switch.
If your Parallel Line Drivers are
not operating properly, double-
check all of your connections and
try again. If you still experience
problems, change the Busy/
Acknowledge setting on both units
and try again. If you still do not
obtain satisfactory results, call
technical support.