User's Guide ADI-648 © RME
9
6.4 Outputs ADAT Optical
The ADI-648 provides 8 outputs in ADAT optical format. They are fully compatible to all ADAT
optical inputs. A usual TOSLINK cable is sufficient for connection.
With the Matrix Router de-activated, all MADI channels are copied to the 8-channel ADAT for-
mat in a logical order:
MADI In
1-8
9-16
17-24
25-32
33-40
41-48
49-56
57-64
ADAT Out
1
2
3
4
5
6
7
8
If a MADI signal in Double Wire format (standard frame) is present at the input, technically no
special processing is activated, because the output signals will be in Sample Split format
(S/MUX) right away.
In 96K FRAME mode, the ADI-648 automatically converts Double Speed data to Sample Split
(S/MUX). The data of one MADI channel will be processed and routed to two ADAT channels
according to the following table:
MADI In
1
2
3
4
5
6
7
8
DS Signal
Port
1/2
1
3/4
1
5/6
1
7/8
1
1/2
2
3/4
2
5/6
2
7/8
2
MADI In
9
10
11
12
13
14
15
16
DS Signal
Port
1/2
3
3/4
3
5/6
3
7/8
3
1/2
4
3/4
4
5/6
4
7/8
4
MADI In
17
18
19
20
21
22
23
24
DS Signal
Port
1/2
5
3/4
5
5/6
5
7/8
5
1/2
6
3/4
6
5/6
6
7/8
6
MADI In
25
26
27
28
29
30
31
32
DS Signal
Port
1/2
7
3/4
7
5/6
7
7/8
7
1/2
8
3/4
8
5/6
8
7/8
8
As the device internally always operates in Sample Split mode, the Matrix won't change its
functionality in Double Wire (Sample Split = Single Speed) and 96K Frame (Double Speed). In
both cases the number of channels is reduced to 28 or 32. At the same time the Matrix Router
no longer operates in 8-channel, but 4-channel blocks.
