Dual Aes - Dual Aes Mode - DCS Elgar Plus User Manual

dCS Elgar Plus User Manual
dCS Ltd
Dual AES Dual AES Dual AES Dual AES
– Dual AES Mode
IMPORTANT!
do this:
do this:
Manual filename: Elgar Manual v4.4x.doc
English version
The Dual AES interface was developed by dCS to allow 88.2 or 96kS/s data
streams to be recorded on equipment designed for 44.1 or 48kS/s operation. It
allows a stereo pair of 24/96 data to be recorded on a 4-track digital recorder.
Dual AES mode has become a de-facto standard, appearing on an ever
increasing array of products. Since then, we have developed the Dual AES
interface further to operate at up to 192kS/s, doubling the available audio
bandwidth a second time.
All dCS non-optical single-wire interfaces are capable of 24/96 operation, but
some of our audiophile customers have told us there are extra sonic
improvements to be gained from using Dual AES for 24/96 instead. The reason
for this is certainly not obvious – the digits appear to be the same, it is not
related to jitter.
For 24/192 operation there is no choice but Dual AES. Even our high-speed
single wire interfaces are not currently fast enough.
There are certain requirements for successful Dual AES operation. Obviously,
the source must generate a true Dual AES data stream, not two single AES
outputs. The two cables should be similar in length (less than 3m difference).
The two cables must be connected the right way around or the channels will be
swapped.
Changing inputs between single wire and Dual AES may cause the DAC to
default to single AES mode. To avoid this problem, the
the following four options:
Off
Disables
sources are in use.
On
Allows
front panel
Control, (see page 43).
Auto
Elgar Plus detects single wire or
the message flags in the data stream and sets the mode
accordingly. If a Dual AES source is detected but only
one wire is connected, it will lock to the source as single
AES but flash either the
you that one cable is missing.
Lock
If both
input in this mode forces the unit into
only one wire is connected, the unit warns you of this by
flashing the indicator for the missing wire.
particularly
upsampling everything to 176.4 or 192kS/s Dual AES. In
this case, leave Elgar Plus set to
inputs on the Upsampler.
Note that not all Dual AES capable equipment sets the message flags
correctly. If this is the case, do not use
confidence on dCS equipment.
To select the
Dual AES
through until the display shows
Press the button repeatedly and the display will cycle through the
Select
options. When you reach the one you want, wait for the menu to time out.
mode for when no Dual AES capable
Dual AES
mode to be manually selected from the
Dual AES
button (see page 37) or the Remote
Input
AES1
and are active, selecting either AES
AES 1 AES 2
useful when
Auto
mode you require, open the Function Menu and step
Dual AES.
Page 23
Manual for Software Issue 4.3x
August 2005
Dual AES
page offers
mode from
Dual AES
or indicator to warn
AES2
mode. If
Dual AES
Lock
mode is
using an Upsampler
Lock
mode and select
mode. You can use it with
email: more@dcsltd.co.uk
web-site: www.dcsltd.co.uk
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