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dCS 954 User Manual Manual for Standard Software Version 1.5x
dCS Ltd June 2000
Manual part no: DOC136954 iss 2B1
Page 20
file 135954ma2b1.pdf 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
Menu Items
Issue --
Displays the software issue when
Set is pressed.
DSD -
Selects DSD mode. When on and locked, the unit displays “dSd”. This mode
takes about 15 seconds to load, during which time the menu cannot be used.
There are two options:
Off The unit operates in PCM mode.
On The unit will accept either DSD via the SDIF input
connectors (automatically selecting SDIF-2 or
SDIF-3 format) or DSD packed into 4 AES3
44.1kS/s links.
P3D units have a slightly more explicit menu sequence for this item:
Off The unit operates in PCM mode.
P3D The unit will accept DSD via the SDIF input
connectors (automatically selecting SDIF-2 or
SDIF-3 format) or DSD packed in P3D format on
connectors AES1-3
DSD4 The unit will accept DSD via the SDIF input
connectors (automatically selecting SDIF-2 or
SDIF-3 format) or DSD packed into 4 AES3
44.1kS/s links.
To select DSD on the SDIF inputs, first set the dSd menu option to On. Connect
the 2 data lines plus a 44.1kS/s Word Clock and press the BNC button. The
LED above the button will brighten and the display will show dSd.
To select 4-wire DSD mode, first set the dSd menu option to On. Connect the
four-wire encoded DSD 44.1kS/s data streams to the AES1 – 4 inputs, taking
care to ensure they are in the correct order, and press the AES1 button. The 4
LEDs above the buttons will brighten, the unit will display dSd and unmute. The
unit detects swapped or missing wires by displaying (for example) 1324 or 1-34.
DSD is so different from PCM that many of the PCM related features are no
longer appropriate or are not implemented.
- the Mute and Coarse Lock buttons operate as usual
- the Phase and De-Emphasis buttons do not work and
- the Volume control is disabled.
- the following Menu items are disabled or have their functions
locked: Data, A-Cut, A-Sel, Tone, Sys, I-For, BNC I, BNC, BNC
O, Panel and Flip.
Filt works – there are 4 filter options in DSD mode. See the section on “DSD”
starting on page 40 for more details – they trade-off ultrasonic signal bandwidth
and out-of-band noise. A-Cut is set to On, as DSD data in multi-wire AES
formats should be flagged as Non-Audio. The Ref In option is disabled in SDIF
DSD mode.