Table of Contents
Advertisement
7.4 Digital Outputs
The ADI-2 has a coaxial and an optical digital output. The key OUTPUT sets the format:
ADAT: The optical TOSLINK output operates in ADAT mode. Included support for Sample
Split (S/MUX) enables sample rates up to 96 kHz.
PRO: The output signal carries the Channel Status Professional. The physical output level
at the RCA connector is raised, making the signal compatible to AES-3 and AES/EBU. The
same signal is found at the optical output.
CON: The output signal carries the Channel Status Consumer. The physical output level at
the RCA connector is lowered. The same signal is found at the optical output.
In SPDIF/AES mode, identical signals are available at both the optical and the coaxial output.
Therefore up to two devices can be connected, sending the same data to two different devices
(splitter).
To send signals in AES/EBU format, an
adapter cable is required. Pins 2 and 3 of
a female XLR plug are connected indi-
vidually 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.
The ground-free design, with transformers for digital inputs and outputs, offers a trouble-free
connection of all devices along with perfect hum rejection.
The optical SPDIF output can used as ADAT output (OUTPUT – ADAT). The coaxial output
continues to operate as AES/SPDIF output. The ADAT optical output of the ADI-2 is fully com-
patible to all ADAT optical inputs. A usual TOSLINK cable is sufficient for connection.
SPDIF Double/Quad Speed
Both the coaxial and optical output support all sample rates between 32 and 192 kHz directly.
They operate in the so called Single Wire mode.
ADAT Double Speed
At sample rates above 48 kHz (Double Speed) ADAT uses the Sample Split method (also
known as S/MUX) to be able to operate at up to 96 kHz. The data of the channels 1 and 2 will
be transmitted using channels 1/2 and 3/4. All devices compatible to Sample Split can receive
and recombine the ADI-2's data into 2 channels 96 kHz, like the Hammerfall, Hammerfall DSP
and ADI-8 series from RME.
In Quad Speed mode, the optical ADAT output is operated synchronously at Single Speed
sample clock, but does not provide any audio data. This way the digital lock of other connected
devices isn't lost when switching to highest sample rates, and disturbing noises are avoided.
10
User's Guide ADI-2 © RME
Advertisement
Table of Contents
