Date printed: 24.01.12
15
D21m System
5
addITIONal INFOrMaTION
5.1 Mapping of I/O Cards to MadI and Hd link Channels
The HD card is redirecting the audio channels from the different I/O cards
into the Studer proprietary HD link format (in case of a hub) or MADI (in
case of a remote I/O box). In order to design a complete I/O system, it is
mandatory to know which channels of the I/O cards end up being redirected
to which one of e.g. the 64 MADI channels. This will influence the way the
configuration editor software is used and the labels are selected when starting
the operation of a new system.
General rule: The HD card fills in all channels starting from the left side of
the frame (slot 1) to the right. Input and output cards may therefore be mixed,
but their order dictates the ‘filling up’ of MADI outputs from the frame. In
the same way the order of outputs from left to right is defining which MADI
inputs are being redirected to that card. The same rule applies for the Studer
proprietary HD link format.
The following example illustrates the rules within a complex I/O system:
AES I/O
ADA
T I/O
Line In Line Out Mic/Line In
Mic/Line In
MADI HD
PSU
(Red. PSU)
Input Ch
Output Ch
Remote I/O Box
AES I/O
Mic/Line In Mic/Line In
MADI I/O
Line Out Line Out Line In
HD S
PSU
(Red. PSU)
Input Ch
Output Ch
Hub Frame
48 Ch MADI
40 Ch MADI
80 Ch HD Link
SCore
72 Ch HD Links
16
16
8
16
16 8
4
4
16
40
8 8
16
4 4
48
8
MADI
Channel To I/O Card
1...16
AES/EBU
17...32 ADAT
33...40 Line Out
MADI
Channel From I/O Card
1...16
AES/EBU
17...32 ADAT
33...40 Line In
41...48 Mic/Line In
HD Link From
Channel Hub I/O Card
1...16
AES/EBU
17...24
Mic/Line In
25...72
MADI
73...80
Line In
HD Link (1) To
Channel
HD Link (2)
Channel
Hub I/O Card
1...16
AES/EBU
17...48
MADI 1-32
1...8
MADI 33-64
9...24
Line Out
