INSTALLATION AND SETUP
2.11Keypad Protocols and Conversion
The keypad is assigned “A” as its default protocol, which is simply a collection of settings that determine how the keypad operates. Once assigned, this protocol remains in effect until it is changed-that is, the keypad will operate as it currently does until you change its protocol.
Protocols are most useful for multiple-projector applications. For example, you might want to change a keypad protocol if you are working with two projectors and two remote keypads in the same room and need to control each projector independently (see below). When Keypad A has a different protocol than Keypad B, each keypad communicates only with the projector having a matching protocol. Or, if you have a network of two or more projectors connected together via RS-232 serial ports, you may want only certain projectors to respond to a wired keypad, thus you can use different protocols to limit responses.
NOTE: Matching the protocol on the projector to that of a keypad is done through a setting in the Serial Setup menu. See 3.7, Adjusting System Parameters and Advanced Controls for further information on how to change the projector’s infrared sensor (rear and front) protocol.
A protocol for either type of remote keypad - IR or wired - can be changed through software com- mands entered on the keypad. A new protocol set through software commands remains in effect until the keypad batteries are removed and replaced (if an IR remote), or until the keypad is unplugged (if a wired remote). A remote can also be changed manually -you can “hard-wire” new jumper settings inside the keypad so that they remain in effect until you change the hard-wiring. A hard-wired protocol can be temporarily overridden by the software protocol change, effective until the keypad is unplugged and plugged in again (if a wired remote) or until a battery is removed (if an IR remote).
Independent Keypads and Projectors