dCS
Vivaldi One Digital Playback System User Manual
Software Issue 1.0x
September 2017
Vivaldi One Manual v1_0x
Page 37
English version
SPDIF Digital Inputs
The unit features 3 electrical SPDIF inputs, labelled
SPDIF1
,
SPDIF2
and
SPDIF3
(O), which will accept
sample rates up to 192kS/s including DoP/64.
SPDIF4
(O) is a Toslink optical receiver that is guaranteed
at up to 96kS/s but may be usable at up to 192kS/s. Pull out the dust cover before using the Toslink
input.
USB Interfaces
Both USB interfaces operate in True Asynchronous USB mode, which makes the Vivaldi One immune
to clock jitter from the computer / sound server. The player uses its own internal clock or locks to the
Master Clock connected to the
Wordclock
inputs. Feedback through the USB cable to the computer
controls the data delivery rate.
The
USB1
client interface on a ‘B’ type connector (Q) will accept PCM data at up to 24 bits / 384kS/s
from a Windows™ PC, Apple Mac™ PC or sound server equipped with a suitable USB 2.0 interface.
The interface will also accept DSD/64 or DSD/128 data packaged in DoP format.
We have tested this interface with several common formats running on Windows™ 10,
Windows™ 8.1, Windows™ 7 (SP1) and Apple Mac™ OSX 10.10 with various PCM
streaming programs but we cannot accept responsibility for correct operation with all
source devices, operating systems or software.
The
Unit Settings > USB Class
menu page can set the interface to
Class 1
(up to 96kS/s without a
special driver) or
Class 2
(up to 384kS/s, no driver is required for OSX 10.6.3 onwards, the current
dCS
USB Class 2 driver is required for Windows).
The
USB2
host interface (P) on an ‘A’ type connector can stream PCM music files in most popular file
formats at up to 24 bits / 384kS/s or DSD/128 from a USB Flash Drive. Compatible drive formats are
FAT16, FAT32 or non-encrypted NTFS. With a flash drive connected, a basic browser (see page
26
)
navigates to the music files and selects the file to be played. After closing the browser, the name of the
file is displayed, with a Play or Pause icon and the elapsed playing time.
Low power (10W or less) USB hard disk drives may be used in the same way.
Wordclock Inputs and Output
Each of the two
Wordclock In
connectors (R) will accept standard wordclock from the source equipment
or a master clock at 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 not lock. Use the
Unit Settings > Sync mode
menu page to
lock the selected input to the selected external wordclock. 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.
Each of the
Wordclock In
puts may be used individually, but to make operation easier, the
Player’s
Sync mode
menu page features an automatic mode. In this mode you can (for
example) connect a 44.1kHz wordclock to
Wordclock In1
and a 48kHz wordclock to
Wordclock In2
. With a source connected to another feed from the same Clock, the player
can select the correct clock frequency.
When the unit is set to Master mode, the player uses its internal clock instead of locking to the data or
one of the
Wordclock In
puts. The
Wordclock Out
connector carries a wordclock at the same frequency
as the single-wire input sample rate, up to a maximum frequency of 192kHz. If the selected input is
AES
or
SPDIF
, the source equipment
MUST
be locked to the player’s
Wordclock Out
so that the system
can lock.
Wordclock is used for synchronisation only, it does not carry digital audio data.
