Detailed Description
A Performance
Playback System consists of: one or more Interface Cabinet(s) (IFC), either
a Serial Decoder Buffer (SDB) or Solid State Playback (SSP) card(s), a
combination of appropriate device interface cards, dimmers and control
modules. When the SDB is used, data is stored and retrieved from and external
source such as System i or the System i Spooler,
or audio media. When the SSP is used the show data is stored and retrieved
internally from solid state memory (Flash EPROM).
With the Solid State Playback (SSP) card the system may stand alone or
be synchronized with other media such as audio or video. Show may be programmed
to cycle automatically for a period up to one year with over 4,000 start/stop
times. The SSP allows the system to synchronize with a variety of reference
inputs such as SMPTE time code, EBU time code and Video sync (see the
Solid State Playback (SSP) card section for details).
The Performance Playback System may be used on-line with System
i, RA Gray's Show Production System. Either System
i playback, pre-recorded show data may be augmented with manual
control inputs for performances which require interaction with the audience.
Performance Playback Systems incorporating the Solid-State Playback Card
are typically used in applications where manual device controls are not
required. However, external manual controls can be used. All equipment
will operate in a wide variety of environmental conditions, including
high EMI fields.
Performance Playback System Characteristics:
1. Show Data is sampled 16 or more times per second. Source may be any
of the following
a. Internally from a Solid State Playback (SSP) card
b. Externally from an audio signal recorded on any audio medium.
c. Externally from System I or the System I Spooler.
2. Each channel's data may be individually interpreted in any of the following
ways:
a. 1 Analog Value
b. 1 Analog Value + 1 Digital On/Off Control
c. 1 8-bit Digital Word (signed or unsigned)
d. 8 Individual Digital On/Off Controls
e. 1 of 8 or 2 of 4 Interlocking Digital On/Off Controls
f. 1 Slide Projector: lamp level; tray position; fan control
g. 1 RS-232C, RS-442 OR RS-423 serial port (7 or 8 bits; even, odd or
no parity)
3. Two channels may be used together to provide a 16-bit Digital Word
for use with Positioning Servos.
4. Maximum capacity for each IFC:
a. 64 Analog Devices
b. 64 Analog + 64 Digital devices
c. 512 Digital Devices
d. 64 Slide Projector Devices
e. 64 Serial Devices
f. Any combination of the above
5. Maximum System Capacity:
a. When using the Solid State Playback (SSP) card any number of IFC's
may be ganged together using the same synchronization source.
b. When using the Serial Decoder Buffer (SDB) and audio media, any number
of IFC's may be ganged together using separate data input for each unit.
c. When using System i or the System i Spooler
up to 8 IFC's may be ganged together on each of the system's data outputs.
Any number of System i or the System i Spooler
PC's may be ganged together using the same synchronization source.
6. Dimmers, Modules and Accessories:
a. Show Exerciser/Tester (SET)
b. Serial Data Regenerator (SDR)
c. Rack Dimmer Unit (RDU): 12-2,000 watt dimmer modules
d. Light Dimmer Module (LDM): 1,200 watt dimmer plus flicker circuit
e. Slide Projector Module (EKM-III): for Kodak Ektagraphic E3 slide projectors
f. Slide Projector Module (SAVM): for Kodak SAV-2000 series slide projectors
g. Eight-Bit Switch Module (SWM): eight dry relay contacts
h. Interactive Device Controller (IDC)
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