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dCS 974 User Manual Manual for Software Version 1.0x
dCS Ltd May 2001
Manual part no: DOC1241121A1
Page 48
Document No: OS-MA-A0124-112.1A1
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
AES Message Edit
This menu sets the message bits on the AES outputs.
Professional On/Off Select then press Set to toggle between On
and Off.
Non-Audio On/Off Select then press Set to toggle between On
and Off.
Mode Select the audio data format then press Set.
Options are:
Not indicated
Two channel
Primary/Secondary
Stereophonic
Source Select each of the four bytes in turn, press Set,
turn the rotary control to change the character
as necessary and press Set again to accept.
Press ←
←←
← to return to the previous menu and the
four characters will be displayed beside
“Source”.
Destination Set up similarly to Source.
SPDIF Message Edit
This menu sets the message bits on the SPDIF outputs.
Professional On/Off Select then press Set to toggle between On
and Off.
Non-Audio On/Off Select then press Set to toggle between On
and Off.
Copy Permit On/Off Select then press Set to toggle between On
and Off.
Format Select the audio data format then press Set.
Options are:
2 Channel General Format
Compact Disk
2 Channel Encode/Decode
DAT
Gain/Balance and Maximise
This menu allows gain (output level) and balance to be set, or an automatic gain
setting to get the highest possible level without overload – for CD preparation,
for example. The balance control works in a different way to conventional
(analogue) balance controls, and although is easy to operate, you should be
aware of what it does.
To set the gain, select Gain then press Set. Turn the rotary control to adjust the
Gain anywhere between –100.0 dB and +12.0 dB in 0.1 dB steps
9
. Press Set
again to exit.
9
The
dCS 974
has a global gain of -0.01 dB absolute, so when the unit says “0 dB” the overall gain will be
-0.01 dB. This is because noise shaping, dither, and a few other mechanisms can add (small) amounts to an
input signal, but enough to cause digital clipping. The -0.01 dB global gain shift avoids the problem.