Adder AES-8
Applications
There are many different applications to which that the Adder AES-8 Transmission
System is suited. Listed below are a few examples.
Broadcast and Video Post-Production
Links among multiple studios
Links between mixing/editing suites
Studio to transmitter links
Recording Studios
Direct-to-digital recording
Digital links between studios
Commercial Installations
Schools and universities
Convention facilities
Post production facilities
Board rooms
Inter-campus linking
Hotel ballrooms and facilities
Theory of Operation
The Adder AES/EBU system consists of an AES-8 Tx transmitter and an AES-8-Rx
receiver. The Tx contains circuitry which can detect a valid AES signal at any of the 8
input channels or sync input and can synchronize to that signal. The AES digital audio
signal is a serial data bit-stream containing two channels of digitized information along
with clocks, flags and user information. Once a signal is received, it derives the sample
rate clock frequency for synchronization of the 8 input channels.
An input FIFO circuit phase-aligns the clock boundaries of the 8 AES inputs to the
synchronization signal, so that all inputs remain perfectly phase-aligned and in sync.
These 8 AES inputs are essentially slots in the high speed multiplexer (MUX) and as
such, the Adder AES-8 System is essentially an AES multiplexer and high speed
fiber-optic transmission system. The serial data rate of the AES MUX is 125Mbit/sec.
The front panels feature SAMPLE RATE switches, active channel LED’s, and
indicators for sync and internal power supplies. The one rack space chassis features
an all steel construction with a tough powder coat finish.
Power
Power to the AES-8 System is supplied by the wall mount transformers included in the
packing. Connect to the power input located on the rear of the units. Power input is
center pin negative at 12V DC at 0.5 Amps.
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