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dCS 974 User Manual Manual for Software Version 1.0x
dCS Ltd May 2001
Manual part no: DOC1241121A1
Page 86
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
Digital Interface Specifications
AES/EBU (AES3)
Input Output
Type
Balanced, differential
Impedance 110 110
Ω
Sensitivity (unloaded) 1 ~ 10 7 V pk-pk
Maximum Wordlength 24 24 bits
Connector XLR3 female XLR3 male
Pin 1 Ground or shield
Pin 2 +Signal
Connections
Pin 3 -Signal
Table 11 – AES/EBU Interface Electrical Characteristics.
SDIF and DSD
Input
(Upper block)
Output
(Lower block)
Type
Single ended, ground
referred
Impedance 100 (CH1/2)
~1k (WCLK)
55
Ω
Sensitivity (unloaded) TTL TTL
Maximum Wordlength 24 24 bits
Connector BNC x 4 BNC x 3
CH1 IN CH1 OUT
CH2 IN CH2 OUT
Connections
WCLK IN /
LOOP OUT
WCLK OUT
Table 12 – DSD/SDIF Interface Electrical Characteristics.
IMPORTANT!
The upper DSD/SDIF WCLK IN connector loops through to the upper
LOOP OUT connector to allow an external Wordclock to be daisy-chained.
The last unit in the daisy-chain will need a 75
Ω
BNC termination connected
to the upper LOOP OUT.
SPDIF (electrical)
Input Output
Type
Single ended, ground
referred
Impedance 75 75
Ω
Sensitivity (unloaded) 0.5 1.0 V pk-pk
Maximum Wordlength 24 24 bits
Connector RCA Phono & BNC
Table 13 – SPDIF Interface Electrical Characteristics.