Owner`s manual

17
WARNING: Do not use a cable longer than 150 feet to connect the
TX102 to a remote Telplex.
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If connecting a terminal device to a TX104 or TX108, refer to Section
3.6.1 . Refer to Section 3.6.2 if connecting to a TX102.
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IMPORTANT: Before you proceed with cabling, you must know
whether the terminal devices that you will connect to your Telplex are
DTE (Data Terminal Equipment) or DCE (Data Communication
Equipment). The following devices are generally DTE: terminals,
printers, and computers like the IBM PC. The following devices are
DCE: modems and some computers.
The standard configuration of the TX104 and TX108 is all terminal
ports DCE with DB-25 female connectors. DCE ports use the
following signals for communication:
TELPLEX EIA-232 TERMINAL PORT PIN/SIGNAL DEFINITION
Pin Signa
l
Direction Definition
1 PGND --- Protective Ground
2 TX Output Data In
3 RX Input Data Out
4 RTS Input Request To Send. Input for RTS/DSR pass through feature
5 CTS Output Clear To Send. Handshake In, enable/disable the transmission
of characters
6 DSR Output Data Set Ready. If RTS/DSR pass through is enabled, this line
follows the state of the remote Telplex's RTS line. If RTS/DSR
pass through is disabled, this line is a constant +12 volts.
7 SGND --- Signal Ground
8 DCD Output Data Carrier Detect. Follows the state of the composite's DCD
line.
20 DTR Input Data Terminal Ready. Enable/disable the receiving of
characters.