DLV1280-DX User Manual - Christie Digital Systems

INSTALLATION AND SETUPFigure 2.23. RS-422 Serial Connection to a ComputerWARNINGDo not use an RS-422 port unless you are using acomputer with RS-422 capability. The voltage levels ofthis signal can damage incompatible equipment.If using a switcher 'You may wish to use one or more external Marquee Signal Switchers or a third partyswitcher in order to significantly increase the number of sources you can select. Ifyou are using a Marquee Signal Switcher, connect the switcher’s RGB output toINPUT 1 and connect an RS-232 serial communication cable between the switcher andthe projector serial port labeled SWITCHER (refer back to Figure 2.20). The switchercommunication link (permanently set at 9600 baud) enables you to access inputsconnected to the switcher in the same manner as those connected directly to theprojector. For most other third-party switchers, connect and access sources accordingto the documentation provided with that switcher.NOTE: See 2.4, Source Connections, “Connecting a Switcher” for complete details.If using multiple projectors 'Serial CommunicationsRS-232 NETWORK: To control multiple projectors with a computer/controller havingan RS-232 interface, first set them all to the same baud rate needed, then chain theprojectors together by connecting the RS-232 OUT connector of the first projector(already connected to the computer/controller) to the RS-232 IN connector of the nextprojector in the chain.2-22 DLV1280 DX User’s Manual