Alcorn Mcbride V+ series, Руководство пользователя

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Application Notes 7-5
Entrance and Exit Doors
The V16+ uses two of its outputs to control the theatre doors. Another
V16+ output is used to flash the warning lights in the preshow area above
the theatre entrance doors. This alerts guests who might be standing too
near the doors, and also provides a means for beckoning the crowd through
the doors in order to increase theatre load efficiency.
Projector
The final piece of projection room equipment connected to the V16+ is the
projector. The projector has a ready line that tells the V16+ it has recycled
to the end of its film loop and is ready for the next theatre presentation. The
V16+ has two control lines which go to the projector. One starts the
projector if it is ready and has recycled from the previous show. The other
opens and closes the projector douser. This provides a means for the V16+
to stop the projection of the film in the theatre without having to stop the
automated mechanism of the projector.
Audio System
Our Theatre Audio System consists of five tracks of digital audio that has
been sampled to be in synchronization with the video material when cued
on the same frame as the video players. This audio will be sourced from an
Alcorn McBride Digital Binloop system that accepts simple serial
commands from the V16+.
Through a parallel connection to the audio mixing system, the V16+ can
fully mute the audio to eliminate theatre sound entirely. Although the mute
button could be connected directly to the audio system, it is wise to route it
through the V16+ as we have described. This allows the V16+ to
automatically unmute the audio at the end of each show. One common
operational error occurs when the maintenance staff that tests the theatre
each morning mutes the audio. During the first show of the day, the
operator may not notice that the audio is muted until the first portion of the
program material has been missed. By programming the V16+ to unmute
the audio at the end of each show cycle, the audio will be automatically
unmuted before the first show of the day begins.
DVD Players
In our design each DVD Player used in the show requires one serial
connection to the V16+.
The preshow of our theatre uses eight small monitors and one large screen
video projector, arranged in an aesthetically pleasing pattern on the preshow
walls. Each of these monitors is driven by its own video program. For the
sake of simplicity we have used nine separate, synchronized DVD Players
for the preshow; it might be possible to use the three main theatre disc
players for three of the preshow monitors, however this would constrain the
timing relationship between the preshow and the main theatre. Since we