Adat Optical - RME Audio Micstasy User Manual

AES/EBU Sync
The input AES 1 (channel 1/2) found on the D-sub connector can not be used for audio with the
Micstasy, but as clock source. The input is transformer-balanced and ground-free. Thanks to a
highly sensitive input stage, a SPDIF signal can also be fed by using a simple cable adapter
phono/XLR (see above).
Pinout of the D-sub connector, Inputs
Signal In In
1/2+ 1/2-
D-sub 24 12
GND is connected to pins 2, 5, 8, 11, 16, 19, 22, 25. Pin 13 is not connected.

14.2 ADAT Optical

The Micstasy provides two digital outputs in ADAT optical format. In normal operation these
ports carry the converted analog input signal. When using the I64 MADI Card and activating the
option oP in the Setup menu do, the MADI input data is present at the output instead, see chap-
ter 11.11. In Single Speed mode both outputs carry the same audio data. With this it is possible
to distribute the output signal to two devices (2 x ADAT splitter).
As the ADAT optical signal is physically specified up to 48 kHz only, the Micstasy automatically
activates Sample Split mode (S/MUX) at 88.2 and 96 kHz, distributing the data of one channel
to two output channels. The internal frequency stays at 44.1/48 kHz. Therefore the sample
clock at the ADAT outputs is only half the frequency of the AES outputs. As interesting as this is
– you don't need to think about it. 96 kHz capable ADAT hardware, like all current RME digital
interfaces, re-combine the data automatically. The user (and the DAW software) does not see
any split data, but just single channels at the expected double sample rate.
The ADAT outputs can be used in parallel to the AES outputs at up to 192 kHz, but in QS mode
only channels 1 to 4 will be available.
The ADAT optical outputs of the Micstasy are fully compatible to all ADAT optical inputs. A
usual TOSLINK cable is sufficient for connection.
ADAT Main
Interface for the first or only device receiving an ADAT signal from the Micstasy. Carries the
channels 1 to 8. When sending a Double Speed signal, this port carries the channels 1 to 4. In
Quad Speed mode this port carries channels 1 and 2.
ADAT AUX
In Single Speed mode carries a copy of the data at the Main output. When sending a Double
Speed signal, this port carries the channels 5 to 8. In Quad Speed mode this port carries the
channels 3 and 4.
In In In
3/4+ 3/4- 5/6+
10 23 21
User's Guide Micstasy © RME
In In In
5/6- 7/8+ 7/8-
9 7 20
33