System Description; Functionality - AVT MAGIC AE1 DAB+ Hardware & Software Manual

2 S Y S T E M D E S C R I P T I O N
The functional elements of the system are pictured in Fig. 2.
FIG. 2
2.1

Functionality

The MAGIC AE1 DAB+ Audio Encoder is equipped with a LAN interface for
a direct connection to the AVT MAGIC DAB MUX Multiplexer based on the
Fraunhofer Content Server
supporting EDI. For the connection to Fraunhofer Multiplexers, the FhG
MUXENC protocol is optionally available.
NTP is used for the synchronisation of the systems' clocks when the Encoder
is connected to a Multiplexer. The communication between the Encoder and
the Multiplexer is realised via the EDI protocol or via the FhG MUXENC pro-
tocol.
Additionally, the MAGIC AE1 DAB+ system incorporates an X.21 interface
for a connection to all standard Ensemble Multiplexers (e.g. R&S DM-001)
which do not provide a LAN interface. The X.21 clock is derived from the En-
semble Multiplexer clock.
NOTE
The MAGIC AE1 DAB+ Audio Encoder Firmware and PC Software supports
the X.21 operating mode until software version 2.320. With later software re-
leases only the LAN operating mode is possible.
The complete signal processing is taken over by two digital signal processors.
In this way the following functions are realised:
FUNCTIONAL ELEMENTS OF MAGIC AE1 DAB+ AUDIO ENCODER
technology or to other Ensemble Multiplexers
®
S y s t e m D e s c r i p t i o n
P A GE 1 7