Alcorn Mcbride V+ series, User Manual

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Application Notes 7-3
Inputs, Outputs, Sync and Serial Ports
To begin configuring our V16+ we need to make a list of the inputs and
outputs to which it will be connected. This information will then be entered
into the configuration menus of WinScript.
Digital inputs consist of contact closures or voltage sources throughout the
building which are used to sense the status of remote equipment and
operator pushbuttons. In addition, switches on the V16+ front panel
provide user-defined initialization, test, and special functions.
Digital outputs provide dry contact closures for switching control voltages
throughout the building. These signals can be used to open doors,
illuminate lights, and handshake with other equipment.
Serial connections provide the RS-232 commands and status that permit the
V16+ to control up to sixteen DVD Players.
A Composite Sync connection provides synchronization from any or all of
the DVD Players. This guarantees that the V16+ remains exactly in frame
sync with all DVD Players.
Front Panel Buttons
Our inputs include the first eight front panel buttons of the V16+. We will
use the first switch as a show startup button. This button will bring all of
the external equipment up to its nominal starting condition. The show
startup button will activate the same sequence which will execute
automatically whenever the V16+ is powered up.
An evening shutdown button could perform much the opposite of the show
Startup sequence. It would provide a means to stop the video players, take
projectors off line, and turn off operator prompting.
The other internal buttons have been left unassigned at this point but could
be used for special test features, a way to select a different show cycle or
combination, or almost any other function, limited only by the designer's
imagination.
Theatre OCC
The Theatre OCC must provide a way to start the show and to request that
the show pause at rollover. (Rollover is the point when the projector has
reached the end of the theatre show material, the theatre audience has exited
and the preshow audience is in the process of entering the theatre.) Our
show will be designed to automatically cycle all day long, thereby
encouraging the operators to maintain maximum throughput. However, for
large audiences the operators may require more load time than that provided
in the automatic recycling. The Theatre OCC Pause button allows the
operator to request a pause during this load cycle prior to the next theatre
presentation. We have also provided a Theatre OCC Stop button. This
button's function is to stop a show during an emergency situation. It will
close the projector douser, mute the theatre audio and bring up the
houselights. The Theatre OCC will also have open/close/auto switches for