Cambridge Audio AZUR 851C User Manual page 9

Using digital inputs
The 851C is fitted with four digital inputs for the connection of external
digital sources. When a digital input is selected, digital audio from
external devices will be up-sampled and delivered to the 851C analogue
outputs. The digital outputs always output the incoming data without
any processing.
The digital input and interface formats are listed in the table below:
Digital Input
1 Co-axial or Toslink
2 Co-axial or Toslink
AES/EBU XLR balanced
USB B-type Socket
The 851C digital inputs, and the 851C CD player, are selected
sequentially by pressing the front panel or the handset Select button. In
the case of digital inputs 1, 2 and the AES/EBU input, once the input is
selected, if a compatible data stream is present it will play through the
851C immediately.
S/PDIF
S/PDIF
AES/EBU (consumer)
USB Audio profile 1.0
(default) or 2.0
USB 'B-A' type lead
When a digital signal is playing through the 851C its display will show
the input stream sample rate and word length (also known as "bit
depth") along with an indication that the stream is being up-sampled
to 24-bit/384kHz. If no source, or an incompatible data stream, is
connected to a digital input, the display will show UNLOCKED when the
input is selected.
Note: Rather than display the exact word length, some sources report
data as either 20 bit maximum (displayed as < = 20) or 24 bit maximum
(displayed as < = 24).
USB Audio
The 851C USB input enables the playback of audio files or streamed
programme from Microsoft Windows or Apple Mac OS X personal
computers (and some Linux builds). When connected via USB the
personal computer will identify the 851C as an audio device. Specifying
the 851C in the computer's audio control panel will enable it to play
audio data either stored locally on the computer or streamed to the
computer via a network or the internet.
Always turn the Volume to minimum, switch to another
input or turn the 851C off before plugging/unplugging
cables to the USB input or whilst booting up/shutting
down your PC/Mac.
Note: Always use a high quality USB connection cable certified as USB Hi-
Speed. USB cable connections longer than 3m may result in inconsistent
audio performance.
azur 851C
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