User Manual
40
User's Guide HDSPe RayDAT © RME
22. Digital Connections
22.1 ADAT
The ADAT optical I/Os of the RayDAT are fully compatible to other ADAT devices. RME's un-
surpassed Bitclock PLL prevents clicks and drop outs even in extreme varipitch operation, and
guarantees a fast and low jitter lock to the digital input signal. A usual TOSLINK cable is suffi-
cient for connection.
ADAT 1 In
Interface for a device sending an ADAT signal to the HDSPe RayDAT. Carries the channels 1
to 8. When receiving a Double Speed signal this input carries the channels 1 to 4, at Quad
Speed channels 1 and 2.
ADAT 1 Out
Interface for a device receiving an ADAT signal from the HDSPe RayDAT. Transmits channels
1 to 8. When sending a Double Speed signal this port carries channels 1 to 4, with Quad Speed
channels 1 and 2.
ADAT 2/3/4 In
Interface for further devices sending an ADAT signal to the HDSPe RayDAT. Carries the chan-
nels 9 to 32. When receiving a Double Speed signal, these inputs carry channels 5 to 16, in
Quad Speed mode channels 3 to 8. ADAT4 can also be used as SPDIF optical input
ADAT 2/3/4 Out
Interface for a device receiving an ADAT signal from the HDSPE RAYDAT. Transmits channels
9 to 32. When sending a Double Speed signal, these outputs carry channels 5 to 16, in Quad
Speed mode channels 3 to 8. ADAT4 can also be used as SPDIF optical output.
22.2 AES/EBU
The RayDAT’s breakout cable provides one XLR AES/EBU input and output each. Connection
is accomplished using balanced cables with XLR plugs. Input and Output are transformer-
balanced and ground-free. The incoming channel status is completely ignored.
AES/EBU and SPDIF can contain Emphasis information. Audio signals with Emphasis have a
strong high frequency boost and thus require high frequency attenuation on playback.
An Emphasis indication gets lost as there exists no standardized interface on computers to
handle this information!
Input
Thanks to a highly sensitive input stage
SPDIF coaxial can be fed too by using a
simple cable adapter phono/XLR. To
achieve this, pins 2 and 3 of a male XLR
plug are connected individually to the two
pins of a phono plug. The cable shielding
is only connected to pin 1 of the XLR -
not to the phono plug.