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RS-232 projector control for Electrohome Marquee series projectors Copyright 2001 Board of Trustees of the University of Illinois (Serial I/O code Copyright 1997, John E. Stone) John E. Stone (johns@ks.uiuc.edu) (j.stone@acm.org) (johns@megapixel.com)


This is a simple package which implements the most basic functionality for computer control of Electrohome (now Christie Digital) Marquee series CRT projection systems. This software was developed and tested on a Model 8500LC Ultra projector, but should work on all of the Marquee projectors with RS-232 control inputs. The sofware has been tested to work on Sun workstations with Solaris, but should work on any Unix system that supports the POSIX terminal I/O funcions.

Compiling the projector control program should be as simple as running "make" in this directory.

To use the projector control program, just run the newly compiled 'projector' program with one of several arguments as below: projector serial-devicename command1 command2 command3 ....

Each of the commands specified are executed one-by-one in sequence with a 1 second pause inserted between each command to give the projector time to respond.

The available commands are:

poweron - power on all projectors
poweroff - power down all projectors
standbyon - put all projectors on standby, offline standbyoff - take all projectors off of standby, fully online

In our lab, we commonly use this sequence: projector /dev/ttyb poweron standbyoff

If you have questions or comments about this package please direct them to johns@ks.uiuc.edu

John E. Stone
johns@ks.uiuc.edu


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