dCS Debussy DAC
User Manual
Software Issue 2.2x
August 2013
Debussy DAC Manual v2_2x.docx
Page 19
English version
USB Interface
The
USB
interface on a ‘B’ type connector (T) will accept PCM data at up to 24 bits / 192kS/s from a
Windows™ PC, Apple Mac™ or sound server equipped with a USB interface. This interface operates
in asynchronous mode, which makes the
Debussy DAC
immune to clock jitter from the computer /
sound server. The DAC either uses its own internal clock or locks to the system clock connected to the
W/Clock
input. Feedback through the USB cable to the computer controls the rate of data delivery.
!
We have tested this interface with several common formats running on Windows 7,
Windows Vista (SP2), Windows XP (SP3) and Apple Mac OSX 10.5, 10.6 & 10.7 with
various PCM streaming programs but we cannot accept responsibility for correct
operation with all source devices, operating systems or software.
!
The
USB
interface is designed to work with a computer or sound server. Nothing useful
will happen if you connect the interface directly to an MP3 player or a flash stick.
!
Please see page
for details on setting up the interface to Class 1 (up to 96kS/s without
special drivers) or Class 2 (up to 192kS/s, no drivers are required for OSX 10.6 or later,
drivers are required for Windows).
Set to USB Class 2, this version will also decode DSD data packaged in DoP format.
Label
The label (U) states the unit’s serial number and the nominal voltage to which the unit is set. It is
important to quote the serial number if you need assistance.
TEST Connector
The
TEST
connector (V) is an RS232 interface, primarily used to remotely control the unit during
automated testing. Please contact
dCS
for information about using this interface with a household
automation system. Note that we recommend using infra-red remote control instead.
Mains inlet
Power is connected via a standard IEC320 connector (W), protected by a fuse (X) and isolated by a 2-
pole power switch (Y).