DCS dCS 904 81

dCS 904 User Manual	Manual for Software Version 1.5x and 1.36
dCS Ltd			June 2000
	Ref In		23
	A-SL		23
	Offst		23
	Loc		23
	End		23
Typical Applications.........................................................................................			24
	Using a dCS 904 to output DSD		24
	Using a Master Clock to Sync a dCS 904		24
	Storing DSD on an 8 track 16/44.1 PCM Recorder		25
	Six Channel PCM Set Up		25
	Storing 6 channel DSD on a 24 track 16/44.1 PCM Recorder		26
	Operating Several Units on One Remote Chain		27
	8 Channel P3D DSD Set Up with Monitoring		28
dCS 904 Technical Information.........................................................................			30
	Anti Alias Filtering		30
	Clocking		31
	Internal clock		31
	Synchronising to source		31
	DSD		32
	DSD Overview		32
	Signal to Q Noise and SACD Specs		32
	DSD Full Scale		33
	DSD Mute		33
	DSD Overload Behaviour		33
	DSD Electrical and Data Structures		33
	Sample Alignment		37
	Noise Shaping		41
	Digital Interface Specifications		44
	Analogue Input Specifications		45
	Digital Data Formats Supported		46
	AES3 (AES/EBU) Format		47
	Message Handling		47
	How Far will it Go?		47
	SDIF-2		50
	PCM Format		50
	SDIF-2 Messaging		51
	DSD on SDIF-2		52
	DSD on SDIF-3		52
	RS-232 Remote Control Interface		53
	Overall Description		53
	Physical Interface		53
	Timing Accuracy and Warnings		53
	Transmit Message		54
	Acknowledge Message		54
	Example :		55
	Special Commands and Protocols		55
	Command Streams		56
	Example: Switching to 96k PCM		56
	Example: Switching to P3D		58
	Power Consumption		62
	Size and Weight		62
	Operating Conditions		63
General Technical Information........................................................................			64
	Word Length Reduction		64
	What does it look like?		66
Options ..............................................................................................................			68
	Mains Voltage		68
	Video Frequency VCXOs		68
	P3D, DSD Pro and Other Formats		68
	Ordering Options For A New Unit		68
	Having Your Options Changed		68
Maintenance and Support................................................................................			70
Manual part no: DOC135904 iss 2B2	Page 81	135904ma2b2.pdf file 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

Contents

© 1997, 1999, 2000 dCS Ltd PRODUCT FEATURES Page CONTENTS About this Manual USING YOUR dCS 904 FOR THE FIRST TIME Product Overview What’s in the Box Mains Voltages Installing Unit in a Rack Getting Started Page THE HARDWARE – CONTROLS AND CONNECTORS Rear Panel SDIF/DSD Clk In SDIF/DSD Clk Out Figure Remote In & Out 9 pin D type male (2 off) Front Panel “Word Length Reduction” Overload Level Menu Step blue Set Master/Slave Down Master Clock Sample dCS 904 Sample Rate (kS/s) Rate (kS/s) The Software the Menu” DSD AES O Sample Rate Display Error Codes and Messages “Internal Device Error Codes” on page 74 for THE SOFTWARE – THE MENU Overview The Menu Sequence Menu Items DSD O Tone “RS-232 Remote Control Interface” Test “Error Codes and Messages” 7-Seg Heat “Operating Conditions” Ref In A-SL Offst Loc End Using a dCS 904 to output DSD Using a Master Clock to Sync a dCS Storing DSD on an 8 track 16/44.1 PCM Recorder Six Channel PCM Set Up Storing 6 channel DSD on a 24 track 16/44.1 PCM Recorder Operating Several Units on One Remote Chain 8 Channel P3D DSD Set Up with Monitoring Page dCS 904 TECHNICAL INFORMATION Anti Alias Filtering Clocking DSD E2 spec E3 spec DSD Full Scale DSD Mute DSD Overload Behaviour Page Page Page Sample Alignment Page Page Page Noise Shaping Page Page Digital Interface Specifications Analogue Input Specifications Digital Data Formats Supported AES3 (AES/EBU) Format Page Page SDIF-2 SDIF-2Messaging DESCRIPTION Definition Default Message DSD on SDIF-2 DSD on SDIF-3 RS-232Remote Control Interface Transmit Message Acknowledge Message Example : Special Commands and Protocols Command Streams Example: Switching to 96k PCM Page Example: Switching to P3D Page Page Page Power Consumption Size and Weight Operating Conditions GENERAL TECHNICAL INFORMATION Word Length Reduction xTruncation Type Noise with 44.1 kS/s data unweighted F weighted What does it look like Page OPTIONS Page MAINTENANCE AND SUPPORT Hardware Software Hardware Update or Calibration Warranty Safety and Electrical Safety Page TROUBLESHOOTING Error Codes and Messages Internal Device Error Codes System Messages and Error Codes Trouble Shooting Your System One output channel is low or absent Clicks or crackles occur on the outputs The unit fails to slave to a Master Clock The unit slaves to Word Clock but not AES/EBU The Overload indicator will not go out I wish If You Need More Help Other Information Page INDEXES AND SOFTWARE VERSION NUMBERS Definitions of Units Full Contents Page Page Tables Figures Keywords and Phrases