dCS
Vivaldi Upsampler Plus User Manual
Software Issue 2.0x
November 2016
Vivaldi Upsampler Manual v2_0x
Page 37
English version
Word Clock Input / Output
Either of the two
Word Clock In
connectors (Q & R) will accept standard word clock from the source
equipment or a master clock at 32, 44.1, 48, 88.2, 96, 176.4 or 192kHz. The clock frequency
MUST
be
an exact multiple of the data rate, otherwise the system will default to
Audio
sync. Use the
Settings > Sync mode
menu page (see page
42
) to lock the selected input to the selected external
word clock. The source
MUST
be locked to the same clock, otherwise the system will not be locked
and periodic clicks or other undesirable noises or dropouts will be heard on the outputs.
The two
Word Clock In
puts may be used individually, but to make operation easier, the Vivaldi
Upsampler’s
Sync mode
menu page features a
Word Clock 1-2 Auto
mode. In this mode you can
connect a 44.1, 88.2 or 176.4kHz word clock to
Word Clock In1
and a 48, 96 or 192kHz word clock to
Word Clock In2
. With a source connected to another feed from the same Clock, the Upsampler can
select the correct clock frequency.
When the USB or Network interfaces are in use, the Upsampler can be locked to a 38.4kHz clock
generated by a Vivaldi DAC (v1.10 or later) set to
Universal Master Mode
.
The
Word Clock Out
connector (S) carries word clock as follows:
•
Single wire output – Word Clock Output frequency is the same as the sample rate.
•
Dual AES output 88.2 to 192kS/s - Word Clock Output frequency is 0.5 x the sample rate.
•
Dual AES output 352.8 or 384kS/s - Word Clock Output frequency is 0.25 x the sample rate.
•
DSD output modes - Word Clock Output frequency is 44.1kHz.
Word Clock is used for synchronisation only, it does not carry digital data.
Network Interface
The
Network
connection on an RJ45 socket (U) acts as a UPnP
TM
renderer, streaming music data
from a NAS drive or a local computer over a standard Ethernet network. The Upsampler can stream
music files at up to 24 bits / 384kS/s or DSD/128 under the control of a
dCS
Vivaldi App running on a
suitable iPad, iPhone, iPod Touch, (see page
18
) or other UPnP control point.
!
The RJ45 socket’s contacts can be damaged by accidentally inserting the wrong
connector (e.g. a USB type B or type A). To avoid this, we suggest leaving the dust
cover fitted when not in use and fitting the RJ45 cable immediately after removal.
