RME Audio ADI-2 Pro, User Manual

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56
User’s Guide ADI-2/4 Pro SE - v 1.0
To receive signals in AES/EBU format on the coaxial
input, an adapter cable can be used. Pins 2 and 3 of a
female XLR plug are connected individually to the two
pins of a phono plug. The cable shielding is only con-
nected to pin 1 of the XLR - not to the phono plug.
Output
With SPDIF identical signals are available at both the
optical and the coaxial output. An obvious use for this would be to connect two devices, i.e. using
the ADI-2/4 Pro SE as a splitter (distribution 1 on 2).
Under
Setup
– Options – SPDIF / Remap Keys – Optical Out
the output format can be manually
changed from SPDIF to ADAT. Only two channels are sent via ADAT, the same that are still
available at the coaxial output.
The ADI-2/4 Pro SE
’s SPDIF channel status has been implemented according to IEC60958:

32 / 44.1 / 48 kHz, 88.2 / 96 kHz, 176.4 / 192 kHz depending on the current sample rate

Audio use, Non-Audio

No Copyright, Copy Permitted

Format Consumer

Category General, Generation not indicated

2-channel, No Emphasis

Aux bits Audio Use
The option
Digital Out Source - Line Out (SETUP
– Options –
SPDIF / Remap Keys ) sends the
processed signal of signal path 1/2 also to the digital outputs AES, SPDIF and ADAT, for example
to connect active monitors having digital inputs.
Pinout of the digital breakout cable: see chapter 33.7.
22.3 ADAT
The optical SPDIF input is fully compatible with all ADAT optical outputs. The internal receiver
detects the format and automatically switches between SPDIF and ADAT mode. RME's unsur-
passed Bitclock PLL prevents clicks and drop outs even in extreme varipitch operation, and guar-
antees a fast and low jitter lock to the digital input signal. A usual TOSLINK cable is sufficient for
connection.
To not break the concept and to simplify operation, only channels 1/2 of the ADAT input signal
are taken. Even in multi-channel USB mode ADAT uses only the SPDIF input channels 5/6
– not
more. Still the information of all 8 ADAT channels is used in two cases: in SMUX (96 kHz) and
SMUX4 (192 kHz) operation, where channels 1/2 are built up from the information spread about
4 and 8 channels. And in Digital Through mode, where only channels 1/2 can be monitored, but
all 8 channels are passed through to the output if set to ADAT (see below).
ADAT input supports the unofficial signalling of double speed mode, 88.2 and 96 kHz. In slave
mode the clock will automatically jump into double speed mode then. Several RME interfaces
support such a signalling.
Under
Setup
– Options – SPDIF / Remap Keys – Optical Out
the output format can be manually
changed from SPDIF to ADAT. Only two channels are sent via ADAT, the same that are still
available at the coaxial output.