DCS dCS 974, Digital to Digital Converter Rear Panel, THE HARDWARE – CONTROLS AND CONNECTORS, – C, AES, AES, BNC, TOS, Loop IN, Loop IN, WCLK IN, WCLK IN, WCLK IN, Dual AES, Quad AES, DSD Quad

dCS 974 User Manual	Manual for Software Version 1.0x
dCS Ltd	May 2001

THE HARDWARE – CONTROLS AND CONNECTORS

Rear Panel

	AES / EBU INPUTS			AES / EBU REFERENCE LOOP		SPDIF
PUSH	PUSH	PUSH	PUSH	PUSH	IN	OUT
						RCA
				IN	OUT
AES 1	AES 2	AES 3	AES 4	AES CLK OUT	SYNC INPUT	BNC
						TOS
	AES / EBU OUTPUTS

DSD / SDIF

CH1 IN	CH2 IN	REMOTE
WCLK IN	LOOP OUT
CH1 OUT	CH2 OUT
LOOP IN	WCLK OUT
		See base for
		serial number

	dCS 974
	more@dcsltd.co.uk
IN	Disconnect mains
	before removing cover.
	See User Manual for
	installation instructions
LOOP	before connecting supply.
	WARNING: This unit
OUT
	MUST be earthed.
MAINS FUSE (2AT) ON OFF
	V 50/60Hz20W

Figure 17– Rear Panel

All input and output connectors are mounted on the rear panel. Individual connectors are identified by the panel legend.

Signal Inputs
AES/EBU Digital Inputs	3 pin XLR Female (4 off – AES 1 – AES 4)

Used for AES3 format signals. AES 1 and AES 2 are used together in Dual AES mode. All four inputs are used together for Quad AES or DSD Quad modes.

AES/EBU Reference Loop 3 pin XLR Female / Male (AES Ref Loop IN & OUT)

Loop IN is used for AES3 references and also for Sync Link operation in multi-
channel synchronising. Loop OUT is hard-wired to Loop IN, allowing the
reference to be daisy-chained through several units.
Sync Input	BNC
This is intended for future enhancements.
SPDIF Inputs	Various (3 off – RCA IN, BNC IN, TOS IN)
Used for SPDIF inputs. Pull the plastic dust cover out of the TOS input before
use.
DSD/SDIF Input	BNC (4 off – CH1 IN, CH2 IN, WCLK IN, LOOP OUT)

The upper group of four DSD/SDIF connectors form an input interface. They are used as a set for SDIF-2 (PCM or DSD) or SDIF-3 (DSD only).

WCLK IN may be used to sync the unit to an external reference wordclock while taking data from another input. WCLK IN is internally wired to LOOP OUT, allowing a reference wordclock to be daisy-chained through several units. When the daisy-chain is not used, the LOOP OUT connector must be fitted with a 75Ω BNC terminator. WCLK IN will also accept a 10 MHz GPS reference.

Manual part no: DOC1241121A1 Page 66 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