System Components; Audio I/O Interfaces; Safety And Reliability - Redundancy, Hot-Swap Functions - Studer D950 Operating Instructions Manual

1.2

System Components

D950 M2 Desk
Mic/Line
In
D19m
MUX
Audio Sources
AES/EBU
MADI
1.2.1

Audio I/O Interfaces

1.2.2 Safety and Reliability – Redundancy, Hot-Swap Functions
Date printed: 03.09.03
Desk / GC Control
Control
Control
Network
System
Automation
FDDI Link
MADI
MEMNET DSP PEAES
Processing
Control
Backplane
Dual
DSP PE
MADI I/O
Processing
D950 DSP Core
Signal Processing
& Audio I/O
Digital audio connections are established directly on the DSP Core utiliz-
ing a user-defined choice of MADI- and/or AES/EBU-format interfaces.
Analog-to-Digital conversion is performed via peripheral devices from the
Studer D19 or D19m families. These and other peripheral devices can be
installed remotely and connected to the mixing console via optical fiber
cables, a configuration that minimizes cabling and enable A-to-D conver-
sion to be performed near the sound source. The resultant improvement in
sonic resolution can be significant.
High quality Digital-to-Analog conversion is also performed via peripheral
devices from the Studer D19 or D19m families or other converters.
Digital signal processing is at the heart of all digital mixing consoles. For
this reason, any faults that occur in this part of the system can be critical.
The Studer D950 continuously monitors all its activities and system func-
tions during operation. If a hardware or software error is detected on a
particular DSP board, the D950 immediately puts into action a series of re-
routing algorithms that protect the audio information. Critical processing
functions are instantly assigned to a redundant DSP board (if installed),
and the operator is notified by an on-screen message. The faulty board can
even be hot-plugged and replaced without interrupting the console's mix-
ing operation. In the rare instance that a problem occurs in another area of
the system the user is again notified and the system Surveyor can be used
to find the fault.
SW V3.3
D950 Digital Mixing System
Signaling &
Monitoring
TC &
Machine Control
D19m
MADI
DEMUX
Audio Outputs
AES/EBU
MADI
Line
Out
Introduction 1-11