dCS
Vivaldi Upsampler User Manual
Software Issue 1.2x
December 2015
Vivaldi Upsampler Manual v1_2x
Page 32
English version
UPSAMPLER SETTINGS
Menu
Sync Mode
This page sets the clocking for the digital input that is currently selected. The options
are:
Audio
– The Upsampler extracts the clock from the data stream connected to the
selected digital input and locks to it. Use this setting for sources that do not have a
suitable Word Clock input. This arrangement does NOT give the best jitter performance
or the best sound quality. Sync to
Audio
is not available when the
SDIF-2,
USB1
,
USB2,
iPod
or
Network
inputs are selected.
Master
– If the
USB1
,
USB2, iPod
or
Network
inputs are selected but a Master Clock is
not available, the Upsampler must be set to
Master
mode. In this mode, the Upsampler’s
internal clock controls the system timing.
Word Clock 1-2 Auto
– This mode is designed for easy operation with a Vivaldi Clock,
DAC and computer, where the data rate may keep changing. Connect the
Word Clock
In1
input to a Clock output set to 44.1 or 88.2 or 176.4kHz and connect
Word Clock In2
input to a Clock output set to 48, 96 or 192kHz. The DAC’s Word Clock inputs should be
connected similarly. When the sample rate changes, the DAC and Upsampler will
automatically select a Word Clock frequency that is synchronous with the data. The
selected word clock is displayed.
Word Clock1
– The Upsampler locks to an external clock connected to the
Word Clock
In1
Input.
Word Clock2
– The Upsampler locks to an external clock connected to the
Word Clock
In2
Input.
If the Upsampler cannot find a word clock that is synchronous with the data, it will default
to
Audio
sync (or
Master
mode for some inputs) and display the “Bad Clock” icon.
The Upsampler remembers the
Sync Mode
setting separately for each digital input.
Select the required input before changing the
Sync Mode
setting.
Dual AES
The
Dual AES
menu page sets the output mode when the output sample rate is 88.2,
96, 176.4 or 192kS/s or DSD in DoP format ONLY. When set to
Dual AES On
, a stereo
pair of data is split between the
AES1
and
AES2
outputs, they MUST be used together
as a pair. Each wire runs at half the sample rate (44.1, 48, 88.2, 96 or 88.2kS/s
respectively). The left channel data appears on the
AES1
output, the right channel data
appears on the
AES2
output.
When set to
Dual AES Off
, both
AES1
and
AES2
outputs carry the same single AES
data at the output sample rate. Using these together in
Dual AES Off
mode is NOT the
same as a Dual AES pair.
When the output sample rate is set to 352.8 or 384kS/s, Single AES mode is not
available, so Dual AES mode is automatically selected.
