remote keypads
as desired, direct the projector’s ir remote keypad towards the display screen or the projector’s ir sensors. alternatively, connect the remote keypad by cable to the remote phono jack input at the back of the projector.
other controllers
rs232 serial communications
from most computers, connect a standard rs232 serial communication cable between the computer and the projector serial port labeled rs232 in—this 9-pin connector is located on the input panel at the rear of the projector (figure 2.28). in the communications menu, set the projector’s baud rate (default = 115200) to match that of the computer.
changing the baud rate is done in the projector’s communications submenu. see 3.8, adjusting system parameters and advanced controls.
rs422 serial communications
some computers can provide rs422 serial communications (often through a plug-in adapter or external converter) rather than the more common rs232 standard. rs422 communication has differential “transmits-and-receives” and is generally better suited for long distances than is rs232 communication. note that rs422 is not compatible with rs232—connecting a rs232-compatible pc to rs422 can damage the equipment at either end. consult the documentation provided with your pc if you are unsure.
the nine-pin rs422 connector is located at the rear of the projector (figure 2.29).
use this port for communications to and from an rs422-compatible controller. in the communications menu, set the baud rate to match that of your rs422 controlling device.
do not use an rs422 port unless you are using equipment with rs422 capability. the voltage level s of this signal can damage incompatible equipment.
ethernet communications
to add the projector to an existing ethernet network with other equipment such as controllers and other projectors, connect st andard cat5 ethernet cable between your ethernet controller (or hub) and the ethernet port at the rear of the projector as shown in figure 2.30.
connecting to apc: if you are connecting the ethernet port directly to a pc (rather than a network or hub), make sure to use a crossover ethernet cable. keep in mind that an ethernet link cannot be used for downloading a software upgrade to the projector—use rs232.
upon connection to an ethernet network, the projector’s factory default ip address of 0.0.0.0 will automatically enable the dhcp function (if available on the network) to assign a new ip address that is valid and unique for that network. or, if there is no dhcp function available on the network (or if a specific static ip address for the projector is preferred or required), you can set the address in the ethernet settings submenu or via an ascii serial command.
make sure the projector is connected to the network before attempting to change its ip address.
regardless of how it is assigned, once a projector has a valid and unique address it will respond to commands sent to this address. to determine the projector’s current ip address, consult the status or communications menus.
refer to 3.8, adjusting system parameters and advanced controls for further information about setting up and using a projector connected via ethernet.
the gpio port
the general purpose in-out (gpio) port enables integration of the projector within an established control system (figure 2. 31). ascii commands sent via the gpio link are stored in projector memory, where they can be triggered as a sequence of events in the future. see appendix e.
