Dsp Rack; Configuration Meets Core - Failsafe And Hot Plug-In Concepts - Studer D950 Operating Instructions Manual

D950 Digital Mixing System
9.3

DSP Rack

9.3.1 Configuration Meets Core – FailSafe and Hot Plug-In Concepts
MemNet Task
PEAES Tasks
9-4 Troubleshooting/Maintenance
The D950 Core system consists of:
• A back plane (1.950.650.00)
• A "MEMNET" communication card (1.950.620.20) used to commun-
icate with the PC.
• One or more "MADI" interface cards (1.950.615.21) to interface MADI
devices.
• One or more "PEAES" cards (1.950.605.20) to interface AES/EBU I/Os
and for audio processing.
• One or more "PE" cards (1.950.610.20) to do audio processing without
AES/EBU I/Os.
The slightly more expensive PEAES card can replace the PE card in all
respects.
Each card has several LEDs on its front panel. Some of the LEDs are the
same on all the cards, some have special meanings for each card.
Distributing Configurations is the art to combine hardware (Core) and
software (Configuration). A Configuration is divided into Tasks. These
Tasks represent the DSP code used by one Card.
The system will distribute the Tasks to the Core Cards:
• At startup;
• When changing the Session Configuration;
• In case of a Card failure.
The Core has four different types of cards. Therefore we also have four
different types of Tasks:
Card Type Description
MEMNET handles the communication between the PC and the Core
PEAES has 6 SHARC DSPs and 8 AES/EBU interfaces
PE
has 6 SHARC DSPs (no audio interfaces)
MADI
has 2 SHARC DSPs and 2 MADI interfaces
The core has only one MemNet Card. The MemNet Task is added auto-
matically to the Configuration. It cannot be configured.
PEAES Tasks consist of a DSP processing part and an AES/EBU inter-
facing part. PEAES Tasks can run on both PE and PEAES cards. If a
PEAES Task is distributed to a PE card, all the DSP functions will work
except the AES interfacing. Each PEAES Task has a unique Card number
which can be set with the Session Configuration Tool if desired (other-
wise, it starts with 00).
The PEAES Task will be distributed to the PEAES Card with the corre-
sponding Card number. In case the Core offers no PEAES card with that
number., the Task will be distributed to any available PEAES or PE card.
If the intended PAES Card is added to the Core later, the task will be
switched to this card automatically.
SW V3.3 Date printed: 03.09.03