Owner`s manual

15
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See Section 3.5.2.1 if connecting a TX104 or TX108 to a remote
Telplex via cable or Section 3.5.2.2 if connecting a TX102.
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If you wish to connect the composite port of a local TX104 or TX108
to a remote Telplex via cable, use the COMPOSITE EIA-422 port on
the back panel of the TX104 or TX108 (see Appendix B ). You must
program the unit to use a Line Type of direct (see Section 5.8 ). The
pin definition for the EIA-422 port is shown in the following table:
TELPLEX EIA-422 COMPOSITE PORT PIN/SIGNAL DEFINITION
Pin Signa
l
Direction Definition
1 PGND --- Protective Ground
2 RX+ Input Receive Data (+)
3 TX+ Output Transmit Data (-)
5 CTS Input Transmit Enable
7 SGND --- Signal Ground
11 --- --- Termination resistor strapping point
14 RX- Input Receive Data (-)
16 TX- Output Transmit Data (-)
20 DTR Output +12 volts when Telplex is powered on
Use a cable with the pinout and connector types shown in Figure 6 on
the following page to connect the EIA-422 ports of two Telplex units
together: