Step 3 - Setting The Sync Mode; Using A Master Clock; Using The Vivaldi Clock's Enhanced Clocking System - DCS vivaldi upsampler User Manual

dCS Vivaldi Upsampler Plus User Manual

STEP 3 - Setting the Sync Mode

If the Upsampler was reset at the start of this procedure and you have selected the
SPDIF
or an
set up to lock to the clock generated by the source.
This is the simplest arrangement, but it does not give the best sonic performance due to clock jitter.
You can improve the performance by adding a Master Clock to your system.

Using a Master Clock

If you have a Vivaldi Clock (or other dedicated Clock) in your system, lock the source, the Upsampler
and the DAC to the Clock for the best performance. To do this:
• Connect the one of the Clock's
on the source, Upsampler and DAC.
• Set the Clock Frequency
Upsampler set to output
source (such as a DVD player) with the Upsampler set to output
48kHz.
• Select the required input on the Upsampler and DAC. This is important because these units store a
different Sync Mode
To set the Upsampler to lock to the Clock, open the menu, scroll to the
Mode page and check it is set to
Menu.) If it is not, press the
• When the menu has closed, the Upsampler will display the W1 icon, provided the clock is
recognised.
If there is no signal at the
Upsampler will sync to audio and display this icon to warn you.
• The Vivaldi Transport will automatically lock to the Clock and display a W icon.
• Set the Vivaldi DAC to sync to Word Clock in a similar way to the Upsampler.

Using the Vivaldi Clock's enhanced clocking system

You may have noticed that the Vivaldi Upsampler has 2 Word Clock inputs, and the Vivaldi DAC has
Word Clock In1
3. and
sample rate of the source often changes. Computer audio is an obvious example of this (the files on
our server were recorded at 10 different sample rates), another example is cycling through the
Upsampler's output rates to find the best sound. dCS products have featured clock multiplication for
several years, but it is much more difficult to keep the clock free from jitter when you change from
44.1/88.2/176.4 to 48/96/192.
So the Vivaldi Clock's outputs are split into 2 groups, the idea is that one group is set to 44.1kHz (or a
multiple) while the other is set to 48kHz (or a multiple). A Word Clock connection from each group
Word Clock In1
connects to
First, select the input you want to lock to the Clock. Then set the
menu page in each unit to
clock that is synchronous with the data.
If you are using the Transport also, don't forget to connect one of the Clock's 44.1kHz
outputs to the Transport's
Vivaldi Upsampler Manual v2_0x
input, you should see the
Group 1 Word Clock
1
to suit the source and DAC. For a CD Transport as source with the
176.4, 352.8 or DSD, a suitable frequency is 44.1kHz. For a 48kS/s
setting for each input.
Menu
Word Clock In1
In2
are intended to be used together for ease of use in situations where the
In2
and of both the Upsampler and DAC.
Auto
Word Clock
Sync Mode - Audio
Outputs to the
192
Word Clock 1. (The button sequence is
button as necessary until the W1 icon is displayed.
connector or it is not recognisable, the
W1/W2, and both units will automatically choose the
Input!
Page 13
Software Issue 2.0x
November 2016
icon. The system has been
Word Clock In 1
connector
or 384, a suitable frequency is
Settings > Sync
Menu, ►,
Settings > Sync mode
English version
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