AVT MAGIC DAB, Hardware/Software Description

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S y s t e m D e s c r i p t i o n
4 S Y S T E M D E S C R I P T I O N
The functional elements of the systems are shown in FIG. 2.
FIG. 2 BLOCK DIAGRAM OF THE MAGIC ETI DECODER
The signal to be monitored is connected to the 2-Mbit/s interface of the ETI
Audio Decoder system. The incoming signal will automatically and regener-
ated be connected without any modification to the 2-Mbit/s output interface.
One of the ETI audio streams can be decoded using the ISO/MPEG Layer II
decoder and is available as an analogue audio signal.
The audio signal can also be in the digital format AES/EBU if the system is
equipped with the optional AES/EBU module. The intgrated Sample Rate
Converter (SRC) synchronises the audio signal to a connected external clock.
Alternatively, the clock can also be supplied by the system (internal clock).
The Windows PC software allows the configuration and control of the system
over an RS232 interface. The User I/O interface and the HSD Relay interface
can be used for external alarm signalling.
Remark Functional Restrictions
Presently the decoding of audio signals with 24-kHz sampling frequency is
not supported.
PAD (Program Associated Data) is not available at the ADD. DATA interface.
Clock
2-Mbit/s
Line
Interfaces
HSD (Relay)
Interface Unit
TTL USER I/O
RS 232C
2 Mbit/s Module
ISO/MPEG Decoder
AES/EBU
Module
Clock (SRC)
Audio
Audio
Interfaces
PAD (ADD. DATA)
Audio Aux
i