User`s guide

User's Guide ADI-192 DD © RME

7. Outputs

7.1 AES/EBU

At the rear side of the ADI-192 DD there are four XLR sockets as AES/EBU outputs. Each out-

put is transformer-balanced, ground-free and compatible to all devices with AES/EBU ports.

Connection is accomplished using balanced cables with XLR plugs.

If AES STATE PRO (Professional) is chosen, the output level is almost 5 Volt. If CON (Con-

sumer) is chosen, the output signal will have a channel status compatible to SPDIF. As far as

we know, every SPDIF device should be capable of handling an input signal of up to 5 Volt in-

stead of the usual 0.5 Volt. Nevertheless the output level will be reduced to 2 Volt when CON is

selected.

Connecting devices with coaxial SPDIF

ports to the ADI-192 DD is accomplished by

a simple cable adapter XLR/phono. 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 connected to pin

1 of the XLR - not to the phono plug.

Besides the audio data, digital signals in SPDIF or AES/EBU format contain a channel status

coding, which is being used for transmitting further information. The output signal coding of the

ADI-192 DD has been implemented according to AES3-1992 Amendment 4:

• 32 kHz, 44.1 kHz, 48 kHz, 64 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz according to the

current sample rate

• Audio use

• No Copyright, Copy permitted

• Format Consumer or Professional

• Category General, Generation not indicated

• 2-Channel, No Emphasis or 50/15 µs

• Single Channel Double Sampling Frequency Mode (Double Wire)

• Aux Bits Audio use, 24 Bit

• Origin: A192

Note that most consumer HiFi equipment (with optical or phono SPDIF inputs) will only ac-

cept signals in ‘Consumer’ format!

The status 'Professional' should always be active when sending data to a device with AES/EBU

inputs (when the XLR connectors are used).

If only one AES input is used, the ADI-192 DD automatically activates a distribution mode.

The single stereo signal will be copied to all four AES outputs.

This realizes a useful distribution mode, sending one AES signal to four devices at the same

time (splitter/distributor). The distribution mode is also available when using the front SPDIF

input. Please note that this special function is only active in Single Speed operation, but also

with SRC activated.