Owner`s manual

Included in the 500 Series line of multiport controllers are units intended for the
following applications:
Port Expansion (A-Series): Allows a single serial port on a computer to
individually access up to 17 peripheral devices with full duplex communication.
Single Port Contention (DQ-Series): Allows up to 17 terminals to contend for a
single port on a computer system.
Multiple Port Contention (B-Series): Allows either 6, 8 or 12 terminals to
contend for either 3, 4 or 6 computer ports respectively.
Networking (F-Series): Networks either 5 or 9 ports together, i.e., allows any
port to connect to any other port on the multiport controller. These also have
host port control which allows a host computer system to make and/or break any
connection between two ports on the multiport controller.
Broadcasting (G-Series): Will simultaneously broadcast whatever data is
received on the host port out to either 4 or 8 peripheral devices while sending
data from a single selected peripheral device back to the host device. This unit
is also capable of operating in a port expansion mode such as the A-Series.
Auto T-Switch (T-Series): Allows a group of up to 6 terminals to switch
between two computer systems.
NOTE: All ports on the 500 Series are standard with EIA-232 ports.
EIA-422 and Current Loop ports are optionally available.
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