Attaching An External Controller - AMX Precis DSP Instruction Manual

Attaching an External Controller

The Precis DSP can be controlled externally by attaching an external control device/system that uses one
of the communication protocols listed below:
An external serial controller is any device that can send and receive ASCII code over an RS-232
(null modem) serial cable. A PC running control software is a common external controller. This section
explains how to attach a PC to the CONTROL port on the enclosure's CPU, so the system can be set up
(and controlled if desired) with APGraphic EQ software, which is located on the AMX AutoPatch CD.
Other serial controllers can also be attached by following the directions below (for controller options,
see page 27).
PC Requirements for APGraphic EQ (also for APControl 3.0)
* Disk space and RAM details: APGraphic EQ requires 5 MB of disk space once installed. The installation
process requires 20 MB of disk space. If required, the JRE v1.4.2 that is packaged with the APGraphic EQ
installer will require approximately 200 MB of free disk space for the installation and approximately 100 MB
once installed.
To establish external serial control:
1.
Use a null modem cable that matches the pin diagram in FIG. 5 for RS-232 without hardware flow
control. AMX AutoPatch equipment requires pins 2, 3, and 5 only.
FIG. 5
RS-232 null modem pin diagram, no hardware flow control
2. Plug one end of the null modem serial cable into the CONTROL (RS-232 / DB-9) port on the
enclosure (FIG. 6).
FIG. 6
Attach null modem serial cable to CONTROL port
Precis DSP Instruction Manual
BCS (Serial) – ASCII sent over a null modem serial cable via the CONTROL (RS-232) port
XNNet – AMX AutoPatch protocol via the CONTROL (RS-232) port
TCP/IP – requires an external module; see the APWeb Server module documentation
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Windows XP Professional or Windows 2000
Java Runtime Environment (JRE): v1.4.2 or the latest version (JRE v1.4.2 can be installed as
part of APGraphic EQ)
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
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Installation & Setup
17