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dCS 974 User Manual Manual for Software Version 1.0x
dCS Ltd May 2001
Manual part no: DOC1241121A1
Page 26
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
PCM to DSD
From PCM in ANY format: AES, SPDIF, Toslink or SDIF-2
at sample rates: 44.1k, 48k, 88.2k or 96kS/s
or
Dual AES at 88.2k, 96k, 176.4k or 192kS/s
or
Quad AES at 176.4 or 192kS/s
DSD Quad
DSD SDIF-2
or DSD SDIF-3
PUSH PUSH PUSH PUSH PUSH
AES / EBU INPUTS
AES / EBU OUTPUTS
AES 1 AES 2 AES 3 AES 4
IN OUT
AES CLK OUT SYNC INPUT
AES / EBU REFERENCE LOOP SPDIF
IN OUT
RCA
BNC
TOS
CH1 IN
WCLK IN
CH1 OUT
LOOP IN
CH2 IN
LOOP OUT
CH2 OUT
WCLK OUT
REMOTE
IN
LOOP
OUT
MAINS FUSE (2AT) ON OFF
DSD / SDIF
Figure 10 – PCM to DSD conversion
The dCS 974 converts PCM to DSD (including 176.4 kS/s to DSD) using the
arrangement given below:
do this: Connect any digital audio source of any wordlength between 8 and 24 bits,
using single, Dual or Quad AES to the AES inputs, or using single or double
speed SDIF-2 to the SDIF-2 inputs, or using single wire SPDIF to the
appropriate SPDIF input, and select the input accordingly.
do this: Set Output Mode to DSD SDIF-2 or DSD SDIF-3. Choose a Filter if you wish.
do this: Output SDIF-2 via the DSD/SDIF connectors, two data cables and one word
clock or SDIF-3 with just two data cables.
do this: Alternatively, take the DSD Quad output from the AES 1, 2, 3 and 4 outputs.
Sample Rate Conversion settings:
Sample Rate Conversion: On
Audio Input Select: Any, even including Dual AES or Quad AES at
higher Input Sample Rates
Sync Source:Any
Input Sample Rate:Any
Output Sample Rate:n/a
Output Mode: DSD
Filter:Any
Output Wordlength:n/a
Noise Shaping:n/a
Dither:n/a
Detect Silence:n/a
As an example, load Store H to take an input from AES1 and convert it to DSD
SDIF-2 or DSD Quad format.