dCS
Vivaldi One Digital Playback System User Manual
Software Issue 1.0x
September 2017
Vivaldi One Manual v1_0x
Page 45
English version
Dual AES
This setting allows the
AES1
and
AES2
inputs to be used together to accept PCM data
at high sample rates (88.2, 96, 176.4, 192, 352.8 or 384kS/s) or DSD/64 or DSD/128 from
a Dual AES source. Note that a source with two AES outputs might not actually produce
Dual AES data! The settings are:
•
Off
– Dual AES mode is disabled. Both inputs accept Single AES data.
•
On
– Dual AES mode can be manually selected using the
Input
button or by remote
control.
•
Auto
– The unit detects the format flags in the digital data and automatically sets the
AES1
&
AES2
inputs to Single AES or Dual AES mode as required. This is the usual
setting. Note that if the format flag in the data is wrong, you will need to manually
select the correct setting.
USB Class
Set to
Class 1
, the
USB1
interface will operate with Mac PCs running OSX 10.5 onwards
or Windows PCs at sample rates up to 96kS/s.
Set to
Class 2
, the
USB1
interface will operate with Mac PCs running OSX 10.6 onwards
at sample rates up to 384kS/s or DSD/128.
Class 2
operation with Windows PCs requires
that the
dCS
USB Class 2 Driver is loaded.
After changing the USB Class, wait for 10 seconds while the USB software is re-loaded.
!
Note that the
USB1
interface will not be detected by a Windows computer if the unit is set
to
Class 2
and a suitable driver is not loaded.
We recommend that you stop playback and close the streaming program before changing
the
USB Class
setting.
Buffer
Set to
On
, the digital data is delayed before being presented to the Ring DAC – this is the
usual setting. The delay is 0.72 seconds with 44.1kS/s data and 0.16 seconds with
192kS/s data. The delay gives the player time to detect changes in sample rate or clock
frequency and mute before the change causes audible clicks or other noises.
The extra delay is not a problem with music, but if the player is used with television or
video, it may cause the sound to be out of sync with the picture. To reduce the delay, set
the
Buffer
to
Off
.
Upsampling
Set to
DSD
, the player inserts a DSD upsampling stage towards the end of the PCM
oversampling sequence, before conversion to analogue.
Set to
DSDx2
, the player inserts a DSDx2 upsampling stage towards the end of the PCM
oversampling sequence, before conversion to analogue.
Set to
DXD
, the player uses its standard PCM oversampling sequence for PCM data.
This feature does not apply to DSD data, which is processed differently.
RS232 Mode
This page sets the RS232 interface to either
T
ext mode for use with 3rd-party control
systems or…
…
dCS
production
B
inary mode, which is intended for factory use.
