AVT MAGIC ISDN Service Manual download pdf (Page 22)

PAGE 22

Hardware Options

3.3 AES/EBU/ANALOGUE Module

The optional AES/EBU/ANALOG Module extends the system by two further

analogue or two digital AES/EBU inputs and outputs (switchable). Via the

MAGIC TOUCH software, each Audio interface can be configured as desired

to the greatest possible extend.

Therefore, three analogue inputs (Audio interface already existing in the sys-

tem + two further modules) and three analogue Audio outputs are available

when selecting the analogue input Audio interface (see Fig. 5). The two ana-

logue outputs of the modules are, additionally, activated in parallel, on the

digital Audio interface of each module.

FIG. 5 AUDIO INTERFACES WHEN SELECTING THE ANALOGUE INPUT

If the digital inputs of the module are selected (see Fig. 6), one analogue and

two digital Audio inputs are available as well as two digital and one analogue

output. The digital outputs of the module are additionally activated in paral-

lel to the analogue Audio interfaces of the module. The digital input as well

as the output have their own sample rate converter. The word clock can be

read or fed in via the BNC connector.

Please note that the two inputs/outputs are physically one AES/EBU inter-

face. The outputs are always connected in parallel.

FIG. 6 AUDIO INTERFACES WHEN SELECTING THE DIGITAL INPUT

Subsequent installation of the module can only be made in our factory.

Maximum number of Audio interfaces

The maximum number of available Audio interfaces depends on the number

of B channels. The sum of the Audio interfaces and B channels (visible chan-

nels + call forwardings) is limited to 24 (e.g. 12 Audio interfaces and 12 B

channels). The maximum number of Audio interfaces can be twelve

in the

maximum build (see CHAPTER A3, page 141).

Until release 3.0, a max. of only seven Audio interfaces are available.

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AVT MAGIC ISDN Service Manual Page 22