AMX AutoPatch Modula, Instruction Manual, Page: 39 / 191

Installation and Setup
33 Modula Instruction Manual
To establish external serial control:
Cable Pinouts
1.
Use a null modem cable that matches the pin diagram in FIG. 16 for RS-232 without hardware flow
control. AMX AutoPatch equipment requires pins 2, 3, and 5 only.
Or
Use a cable that matches the pin diagram in FIG. 17 for RS-422.
Instructions continue on the following page.
FIG. 16
RS-232 null modem pin diagram, no hardware flow control
FIG. 17
RS-422 pin diagram