D21m System
System Examples 4-1Date printed: 11.07.07
4 SYSTEM EXAMPLES
4.1 System with Remote and Local I/O
Notes: Some of the I/O cards are “double-width”, of which a maximum of 6 may be
fi tted in one D21m frame. When only using single-width cards, a maximum of
12 can be fi tted. Therefore, e.g. a maximum of 48 microphone inputs may be
fi tted in one (full) frame. If outputs are required as well, up to 44 microphone
inputs are possible since then at least one slot is used for an 8-channel line
output card.
Input and Output cards may be inserted in any order. The system is fi lling
up the MADI channels automatically, starting from the leftmost card subse-
quently to the right.
Since the MADI bandwidth can only be adjusted in steps of 8 channels, an
odd number of microphone cards (providing 4 inputs each) will result in 4
MADI channels without audio.
The MADI HD card versions 1.949.411.21/1.949.413.21 and newer support
operation with two MADI HD cards in one frame, extending the total chan-
nel count between the hub frame and the remote I/O box to 128. The same
channel count is reached in 96 kHz mode. For details please
refer to chapter
6.5.3.
4...6 AES/EBU Outputs
to Monitoring Frame
Hub
(and I/O)
Remote
I/O Box
96 Ch In
96 Ch Out
96 Ch In
96 Ch Out
96 Ch In
96 Ch Out
RS422 for Mic Control
Remote I/O Box, equipped w. e.g.:
• 44 Mic Inputs
• 8 Line Outputs (Returns)
or e.g.:
• 40 Mic Inputs
• 8 Line Inputs
• 8 Line Outputs (Returns)
or e.g.:
• 36 Mic Inputs
• 16 Ch ADAT In, 16 Ch Out
• 8 Line Inputs
• 8 Line Outputs
Local I/O Hub, equipped with e.g.:
• 0...64 Ch MADI In/Out for
Stage Box Link
• 0...56 Ch MADI In/Out for
e.g. Multi-Track Recorder
• 16 AES/EBU In/Out (1 In and
5 Outs used for Monitoring)
• 32 Ch ADAT In/Out (Spare)
• 8 Mic Inputs
• 8 Line Inputs
• 8 Line Outputs
0...64 Ch Optical MADI
0...64 Ch Optical MADI
(Redundancy)
96 Ch In
96 Ch Out
SCore &
I/O Frame
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