AEQ DIGITAL COMMENTARY UNIT Customer's Manual page 12

Switching between the three available modes is automatic, on detection
of the communication clock signal sent from the CCU or the control
signals coming from the serial port.
• Digital Level Processor module on each one of the four input
channels. Much more than a limiter, the DLP is a single band audio
processor with a sophisticated level control algorithm, working as an
expander, compressor, limiter or unity gain amplifier, depending on
the signal' s peak power mean value. This characteristic gives
optimum utilization of the audio channel without the need for
continuous supervision by the technician.
• All audio parameters, attack and release time, gain slopes and knee
points, can be defined and stored in the CU through the serial
communications port.
• Flash EEPROM upgradeable technology. The equipment stores all
program and configuration data on non volatile memory, which can be
updated, or changed to the requirements of specific users via the RS-
232 connector and the supplied Windows 95 program.
• Includes a testing procedure for unit diagnostics and trouble detection
by technical staff.
• There are 4 different configurations stored on the CU which can be
called-up on power - up:
- 2 user defined configurations
- One special mode (required by BBC) which configures the COM 3
channel to be used by a program producer: the studio talkback push-
button is then changed to latching mode, instead of the normal push-
to-talk mode.
- One operation procedure (ISMIX) to enable or disable the mix of
International Sound (IS) with PRG on the CU in order to suspend the
mix of IS and PRG when the line signal is sent by the tape recorder
channel.
• High quality magnetically shielded input transformers on all analog
inputs, with a high degree of RF protection.
• Wide input range DC/DC switching power supply; from 12 to 48 VDC.
• Local or remote powering with auto-switch function.
• Custom designed LCD symbols, for clear signaling of the CU status.
• The analog input and outputs are externally adjustable by high
precision trimmers.
Digital Commentary System
-12-