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Introduction
PCG has a routing system for switching NTSC video, component video,
and some high res RGB signals. The video signals are routed from
different video sources & destinations including the different
projectors. The high res RGB part of the router is used primarily to
send signals from different CPUs to the projectors. The control system
for routing changes can be done in two ways. There is a control panel
in the VTR rack which has a traditional push button-based interface.
The second method
is a software-based interface that uses rs232 control stream. The
current plan is to replace and/or update the current software.
There should be some printed documentation available by the vt101
terminal, principally to identify the names of devices and some quick
tips.
Starting the Router daemons
Run the
following script from the VT101 in the video lab. Actually, this command
can be run from any shell but the user must
logon with a PCG unix user ID. It cannot be done from the router login
ID.
harry: /usr/local/video/script/start_lab_daemons
Router login
There is login shell that will
run the video router software. The user id & password are taped to
the VT101 monitor in 551a.
If this login fails, then run
harry: /usr/local/bin/router
to start the video router software. Note: this is done from a normal lab ID.
This assumes that the video daemons are running.
Video router documentation
Documentation can
be found wherever the original video router software lives. This router
software was written by Steve Marschner. It is no longer actively
maintained but currently can be found at
harry:/usr/local/video/doc
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router_names_032499.xls – spreadsheet layout of router
matrix
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router.ps– router manual, by Steve Marschner
Video router software update
The current routing software runs under HP-UX. We're currently exploring
different Intel hardware-based solutions for controlling the router. This
can include Windows, Linux, FreeBSD, etc.
Report any malfunction to video@graphics.cornell.edu
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