DCS dCS 904 User Manual
dCS 904 User Manual
Manual for Software Version 1.5x and 1.36
dCS Ltd
June 2000
Manual part no: DOC135904 iss 2B2
Page 16
135904ma2b2.pdf file available from website
Contact
dCS
on + 44 1799 531 999
email to: more@dcsltd.co.uk
(inside the UK replace + 44 with 0)
web site: www.dcsltd.co.uk
A1
for Single AES, Standard speed encoding
b1
for Single AES, Double speed encoding
b2
for Dual AES, Standard speed encoding
C2
for Dual AES, Double speed encoding
C4
for Quad AES, Standard speed encoding
If an invalid combination is selected (e.g. Single AES at 192kS/s), the invalid
combination will flash (e.g. C1) then be replaced by the nearest available
combination.
combination will flash (e.g. C1) then be replaced by the nearest available
combination.
In Single AES mode, the same data stream is available on all four AES outputs.
In Dual AES mode, two sets of identical data streams are available on AES1 & 2
and AES3 & 4 outputs. In Quad AES mode, the data stream uses all four AES
outputs.
In Dual AES mode, two sets of identical data streams are available on AES1 & 2
and AES3 & 4 outputs. In Quad AES mode, the data stream uses all four AES
outputs.
In DSD mode, data in the AES outputs can be turned off (leaving the unit just
outputting an AES clock). This is controlled by the menu item
outputting an AES clock). This is controlled by the menu item
DSD 4
(or
AES O
for P3D optioned units). See page 20.
dCS equipment encodes messaging into the various data streams to enable
receiving equipment to tell what is going on, and to decide which wire is which,
in the unlikely event of user wiring errors. Not all equipment from other
manufacturers does this, so:
receiving equipment to tell what is going on, and to decide which wire is which,
in the unlikely event of user wiring errors. Not all equipment from other
manufacturers does this, so:
IMPORTANT!
Take extra care when connecting Quad AES as it is very easy to connect the
wires in the wrong order. If this is not detected, it may result in badly aliased
mono signals being recorded. Numbering each connector is a sensible
precaution.
wires in the wrong order. If this is not detected, it may result in badly aliased
mono signals being recorded. Numbering each connector is a sensible
precaution.
For Menu operation as the
Up
button, see the section “
Sample Rate Display
-
The main LED display generally shows the sample rate, in kS/s, or the mode
(DSD). When other parameters are set, it briefly shows the new setting (word
length, noise shaping, etc) then reverts to its normal display. In the case of an
error condition, it will display an error message.
(DSD). When other parameters are set, it briefly shows the new setting (word
length, noise shaping, etc) then reverts to its normal display. In the case of an
error condition, it will display an error message.
If the unit is being slaved, the display also indicates which input connector it is
slaved to.
slaved to.
xxx
The sample rate, in kS/s (32, 44.1, 48, 88.2, 86,
176.4, or 192).
176.4, or 192).
- xxx
Slaved to the BNC input (typically, word clock).
--
xxx
Slaved to AES Reference in.
There are also some temporary displays that show what the unit is doing during
its locking phase:
its locking phase:
d xxx
Temporary display during locking – the unit has
detected the base reference sample rate and is
attempting to lock to it.
detected the base reference sample rate and is
attempting to lock to it.
. xxx
Temporary display during locking – the unit is lining
up word clock out to word clock in.
up word clock out to word clock in.
Important error messages are given below – a full list is given in the section