Chapter 15: Serial Control; Connecting Rs-232 Devices; Assigning A Dmx Channel - High End Systems CATALYST Series User Manual

Chapter 15:
Serial Control
The Catalyst Media Server can control peripheral devices such as video switchers or
projector shutters through the PowerMac's Universal Serial Bus (USB) ports. Using the
RS-232 serial communications protocol, the Catalyst Control window's Custom Serial
panel transmits RS-232 control commands to the peripherals as a response to changed
DMX values. This feature lets non-DMX controlled devices coordinate automatically with
events and images in your show.
Each RS-232-enabled serial device is configured through one DMX In panel in the
Catalyst Control window. The serial device then uses one DMX channel for control from a
lighting console.

Connecting RS-232 Devices

Many aftermarket companies manufacture USB to Serial devices for use with the
PowerMac computer. Typically these devices consist of a USB connector on one end and a
DB9 on the other. Contact High End Systems technical support for recommended USB to
serial devices.
Connect the RS-232 device's USB plug to the USB port on the PowerMac G5 computer.
CAUTION!
RS-232 signal strength can degrade sharply over cables longer
than 45-50 feet (15 meters). Consult the manufacturer's
documentation to determine maximum practical cable length.

Assigning a DMX Channel

1. In an unused DMX In panel, click the left button to turn on the panel. The button's
center and edge turn from gray to yellow.
2. Click the description of the layer, to the right of the channel number. On the pop-up
menu, select Custom Serial Trigger 1 or 2. These triggers use the two Custom Serial
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