Date printed: 24.01.12
10
D21m System
using card-internal DIP switches. In order to provide synchronization and
surveyor information it is necessary to provide a MADI link to and from the
remote I/O boxes at all times, even if the channel count should be set to 0.
The protocol switch on the front panel of the MADI I/O card may be set to
‘64 channel’ to allow maximum usage of the available channels. This switch
may only have to be set to ‘56 channel’ protocol for operation with third-
party MADI devices (in case no remote I/O box is connected to the MADI
I/O card).
If 64 channels of MADI transmission are required when working at 96 kHz,
the redundant MADI line can be used as a ‘channel extension’ for transmit-
ting the MADI channels 33-64 (29-56). This must be set accordingly with a
DIP switch on the MADI I/O card inserted in the hub frame.
3.3 Multiple I/O Boxes, Long Distance
Hub
(and I/O)
Remote
I/O Boxes
96 Ch In
96 Ch Out
96 Ch In
96 Ch Out
96 Ch In
96 Ch Out
RS422 from Desk for Surveyor
Information and Mic Control
I/O Frames with Different
Types of I/O Cards
. . . .
Remote I/O Box 1 ... ... Remote I/O Box 5
0...64 Ch Optical MADI
0...64 Ch Optical MADI
(Redundancy)
RS422 from Desk for Surveyor
Information and Mic Control
96 Ch In
96 Ch Out
4...6 AES/EBU Outputs
to Monitoring Frame
Studer Proprietary HD Link
(max. Distance 10 m)
Standard Dual Optical MADI Cable
with SC Type Connectors.
Max. 64 Channels, Includes
Mic Control Signals.
and Surveillance Information.
SCore &
I/O Frame
Notes Both the remote I/O box and the local hub frames are standard D21m frames,
providing the possibility to insert any I/O card available for the D21m I/O
system. The hub frame may therefore also be used for any audio I/O located
close to the DSP core.
Up to 5 remote I/O boxes can be connected to one hub frame. The last slot is
occupied with one ADAT card (or AES/EBU card in case of operation with
the Performa core) in order to provide I/O for monitoring and talkback of the
desk.
The channel count of the MADI link may be set in steps of eight channels
using card-internal DIP switches. In order to provide synchronization and
surveyor information it is necessary to provide a MADI link to and from the
remote I/O boxes at all times, even if the channel count should be set to 0.
The protocol switch on the front panel of the MADI I/O card may be set to
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