RME Audio ADI-192 DD, Руководство пользователя

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User's Guide ADI-192 DD © RME
7.3 ADAT Optical
The ADI-192 DD provides two digital outputs in ADAT optical format. In standard operation only
the port labelled MAIN is used. The port AUX is operated synchronously, but does not provide
any audio data (empty frame). Higher sample rates than 48 kHz are realized by sample multi-
plexing. When using more than four channels at Double Speed or two channels at Quad Speed,
the port labelled AUX has to be used as well.
The ADAT optical outputs of the ADI-192 DD are fully compatible to all ADAT optical inputs. A
standard TOSLINK cable is sufficient for connection.
ADAT MAIN
Interface for the first or only device receiving an ADAT signal from the ADI-192 DD. Carries the
channels 1 to 8. When sending an S/MUX signal, MAIN carries the channels 1 to 4, in case of
S/MUX4 MAIN carries channels 1 and 2.
ADAT AUX
Additional port for a transmission of channels 5 to 8 in S/MUX, or 3 and 4 in S/MUX4 mode.
When operating in Double Speed mode, data are sent encoded as S/MUX. Each output carries
the data of 4 channels only, for up to 8 channels MAIN
and AUX have to be used. The sam-
ples/channels are distributed as follows:
Channel
Port 1/2
MAIN
3/4
MAIN
5/6
MAIN
7/8
MAIN
1/2
AUX
3/4
AUX
5/6
AUX
7/8
AUX
Samples 1a/b 2a/b 3a/b 4a/b 5a/b 6a/b 7a/b 8a/b
When operating in Quad Speed mode, data are sent encoded as S/MUX4. Each output carries
the data of 2 channels only, for up to 4 channels MAIN
and AUX have to be used. The sam-
ples/channels are distributed as follows:
Channel
Port 1/2
MAIN
3/4
MAIN
2a
MAIN
2b
MAIN
3a
AUX
3b
AUX
4a
AUX
4b
AUX
Samples 1a/b 1c/d 2a/b 2c/d 3a/b 3c/d 4a/b 4c/d
Both conversions are lossless. The existing samples are just spread between the channels.