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Interfaces
A2.6 Audio Interface
A2.7 Audio Interfaces on the optional AES/EBU/Analogue Module
There are two digital inputs/outputs or two additional analogue inputs/out-
puts available on the AES/EBU/Analogue Module. The configuration is
made using the Windows PC software.
A2.7.1 AES/EBU Audio Interface
The AES/EBU digital Audio Interface is implemented as a 9-pole SUB-D
socket. Therefore the ISDN Telephone Hybrid has two digital inputs/outputs
on one physical AES/EBU interface. Optionally an XLR adapter can be sup-
plied. The input as well as the output have their own sample rate converters.
With these, a digital source of 32, 44.1 or 48-kHz can be connected directly. For
synchronisation to an external clock (only 48-kHz) the word clock input or
output may be used.This is implemented on the adapter as a BNC socket.
TAB. 14 PIN ASSIGNMENT: AUDIO INTERFACE (INPUT)
Socket: input (XLR)
Port Signal Electrical Characteristics
1 Shield Input level: 0, +3, +6, +9 dBu
Impedance: > 15 kΩ
Head Room: 6 dB
2 Audio in a
3 Audio in b
TAB. 15 PIN ASSIGNMENT: AUDIO-INTERFACE (OUTPUT)
connector: output (XLR, male)
Port Signal Electrical Characteristics
1 Shield Output level: 0, +3, +6, +9 dBu
Impedance: < 20 Ω
Head Room: 6 dB
2Audio out a
3Audio out b
NOTE The digital and analogue audio outputs on the modules are connected in par-
allel. Consequently the signal can be used on both interfaces simultaneously.
TAB. 16 PIN ASSIGNMENT: AES/EBU AUDIO INTERFACE
socket: AES/EBU (SUB-D, 9-pole)
Port Signal Electrical Characteristics
1 AES/EBU IN a IEC958 Professional
Word clock: TTL level 5V
2 AES/EBU IN b
3GND word clock 48-kHz
4 AES/EBU OUT a
5 AES/EBU OUT b
6 GND AES/EBU IN
7 Word clock 48-kHz IN
8 Word clock 48-kHz OUT
9 GND AES/EBU OUT
NOTE An AES/EBU Adapter Cable SUB-D, 9-pole to XLR is available (ID:490091)
Push
1
2
3
2
1
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