Installation & Setup
18
Precis LT Instruction Manual
Attaching Serial Controllers
An external serial controller is any device that can send and receive ASCII code over an RS-232
(null modem) serial cable attached to the Control port on the rear of the enclosure. PCs are common
serial controllers. Once a PC is attached to the Precis LT, the system can be controlled by running
APControl software on the attached PC (see the AMX AutoPatch CD). The system can also be controlled
by entering BCS commands into a terminal emulation program (e.g., HyperTerminal). For information
on BCS commands, see the BCS Protocol Instruction Manual on the AMX AutoPatch CD or at
www.amx.com.
PC Requirements for APControl 3.0
Windows XP Professional
®
or Windows 2000
®
Java Runtime Environment (JRE): v1.4.2 or the latest version
Minimum Hardware: 166 MHz, 128 MB RAM, 20 MB free disk space, 800x600 display
Recommended Hardware: 2.0 GHz, 512 MB RAM, 20 MB free disk space,
1280x1024 display
Serial port
PC Requirements for BCS
Windows XP Professional
®
or Windows 2000
®
Terminal emulation program
Serial port
RS-232 Pin Diagram
To establish external serial control:
1.
Use a null modem cable that matches the pin diagram in FIG. 7 for RS-232 without hardware flow
control. AMX AutoPatch equipment requires pins 2, 3, and 5 only.
2. Plug one end of the null modem serial cable into the Control port on the enclosure (FIG. 8).
FIG. 7 RS-232 null modem pin diagram, no hardware flow control
FIG. 8 Attach null modem serial cable to Control port
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