dCS Paganini Upsampler
User Manual
Software Issue 1.1x
March 2011
Filename: Paganini Upsampler Manual v1_1x.docx
Page 18
English
version
The IEEE
1394
interface (Y) outputs encrypted DSD data. 1394 interfaces are great for carrying lots of
digital data - but are very poor at transmitting a stable clock, so a separate Word Clock connection is
required. The two 1394 ports are identical – they can be used as data outputs or as a pass-through.
Note that the 1394 bus must not be connected in a loop as this will prevent the system initialising.
Word Clock Input / Output
The
W/Clock In
connector (T) will accept standard word clock from the source equipment or a master
clock at 32, 44.1, 48, 88.2 or 96kHz. Unlike the DAC, the clock frequency does not need to be an
exact multiple of the input data rate provided the two rates are synchronous. Set the
Upsampler
Settings / Sync Source
menu page to
WClk
when locking to an external word clock. Note that the
source (e.g. the CD Transport)
MUST
be locked to the same clock, otherwise the
SYSTEM
will not be
locked and periodic clicks will be heard on the outputs.
The
W/Clock Out
connector (U) carries word clock at the same frequency as the single-wire output
sample rate, or 44.1kHz for DSD. For example, if the output is set to 192kS/s Dual AES, the
W/Clock
Out
connector carries a clock at half this rate – 96kHz.
Word clock is used for synchronisation only, it does not carry digital data.
SUC
Connector
The
SUC
connector (Z) is an RS232 interface, primarily used to remotely control the unit during
automated testing. Please contact
dCS
for advice on 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 (P), protected by a fuse (Q) and isolated by a 2-
pole power switch (O).