DCS Digital Audio Master Clock User Manual
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dCS Scarlatti Cloc
Digital Audio Master Clock
User Manual
Software Release 1.0x
June 2008
© Data Conversion Systems Ltd. 2007-8
All rights reserved. No part of this publication may be reproduc ed, stored in or introduced into a retrieval s ystem,
or transmitted in any form, or by any means (electronic, mechanical, photocopying, recording or otherwise)
without the prior written permission of dCS
publication may be liable to criminal prosecution and civil claims for damag es.
Information contained in this manual is subject to change without notic e, and whilst it is checked for accuracy, no
liabilities can be accepted for errors.
1
dCS is Data Conversion Systems Ltd. Company registered in England No. 2072115.
Price UK £8.00 / Euro 12.00
1
. Any person who does any unauthorised act in relation to this
dCS Scarlatti Clock User Manual Software Issue 1.0x
June 2008
Filename: Scarlatti Clock Manual v1_0x.doc
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dCS Scarlatti Clock User Manual Software Issue 1.0x
June 2008
CONTENTS
Contents ................................................................................................................................................. 3
Using the dCS Scarlatti Clock for the first time .................................................................................... 4
What’s in the box? 4
Safety Notice 4
Mains Voltage Setting 4
Power Cables 4
Mains Regenerators 5
Positioning the unit 5
Disposal at end-of-life 5
STEP-BY-STEP GUIDE .......................................................................................................................... 6
Preliminaries 6
The GOLDEN RULES for using a Master Clock 6
Connecting the system for DSD 7
Connecting the system for Dual AES 8
Using an External Reference 8
Front Panel ............................................................................................................................................. 9
POWER Button 9
DISPLAY Button 9
DITHER Button 9
Display 10
FREQUENCY Button 10
MENU Button 10
Remote Control Receiver 10
Rear Panel ............................................................................................................................................ 11
Word Clock Outputs 11
Ref Input 11
1394 Interface 11
SUC Connector 11
Mains inlet 11
The Menu .............................................................................................................................................. 12
Using the Menu 13
INFORMATION Menu 14
CLOCK SETTINGS Menu 14
DISPLAY SETTINGS Menu 14
Specification ........................................................................................................................................ 15
Maintenance and Support ................................................................................................................... 16
Service and Maintenance 16
Replacing a Blown Mains Fuse 16
Cleaning the case 16
Limited Warranty 17
If you need more help 18
Software History 18
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dCS Scarlatti Clock User Manual Software Issue 1.0x
June 2008
USING THE dCS Scarlatti Clock FOR THE FIRST TIME
Congratulations on purchasing your dCS Scarlatti Clock.
Before using your unit, please read this section and the Step by Step Guide. This will enable you to
set the unit up quickly and safely with your hi-fi system.
From time to time, dCS will release updated software on CD that you can install yourself using the CD
Update feature. Please check our web-site occasionally to see if new Scarlatti software is available, or
consult your dealer.
What’s in the box?
Check that the box contains the following items:
• dCS Scarlatti Clock
• Manual and Menu / Setup Guide
• Power cable
• 3x BNC cables
• spare fuses
Notify your dealer as soon as possible if anything is missing or damaged. We suggest that you retain
the original packaging for possible future use. If this is not possible, replacement packaging can be
ordered from dCS or our distributors. Details can be found o n our web site at www.dcsltd.co.uk
The Scarlatti Transport
have a Scarlatti Transport in your system, a programmed Pronto can be ordered direct from dCS as an
optional extra.
is supplied with a programmed Philips Pronto remote control. If you do not
.
Safety Notice
Your dCS Scarlatti Clock contains no user serviceable parts. DO NOT attempt to open the case as
there are potentially dangerous voltages present inside. In the event of the unit developing a fault,
please contact your dealer in the first instance.
Mains Voltage Setting
Before connecting the power cable to the unit for the first time, please check that it has been set to the
correct operating voltage for your mains supply. The unit’s voltage setting is shown on the label
beneath the mains inlet on the rear panel. If this does not match your local supply voltage, DO NOT
attempt to use the unit. Contact your dealer to have the unit reset. Using the unit with the wrong mains
setting for your local supply may result in serious damage to the unit and will invalidate the warranty.
Do not attempt to reset the voltage yourself.
Power Cables
If you wish to use a power cable other than the one supplied, please ensure that it is a good fit to the
mains inlet, and is not so heavy and inflexible as to place strain on the mains inlet.
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dCS Scarlatti Clock User Manual Software Issue 1.0x
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Mains Regenerators
We do not recommend the use of mains regenerators. However, if you do wish to use a mains
regenerator with variable voltage and frequency, we recommend that you set the voltage to match
your local voltage and the frequency to either 50Hz or 60Hz ONLY.
Damage caused to your Scarlatti Clock by misuse of a mains regenerator or by a
!
malfunctioning mains regenerator is not covered by the warranty.
Positioning the unit
Units in the Scarlatti range are designed to be mounted on separate shelves of a rack and must NOT
be stacked directly on top of each other. Place each unit on a firm, vibration free base, allowing
convenient connection to the other parts of your system. To prevent overheating, we recommend that
you leave some free space around the unit to allow for ventilation.
Disposal at end-of-life
The symbol indicates that this product should not be treated as normal
household waste. It should be recycled, so please take it to an approved
collection facility.
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dCS Scarlatti Clock User Manual Software Issue 1.0x
June 2008
STEP-BY-STEP GUIDE
This section guides you through setting up the unit for basic operation.
Preliminaries
The Menu / Setup Guide sheet details the menu structure and details the two most common set-ups.
For all of the Word Clock Outputs and the Ref Input, use 75Ω coax cables fitted with BNC plugs.
Connect the power cable supplied to the power inlet on the Clock rear panel, plug the other end into a
convenient power outlet.
Please do not use an excessively heavy or inflexible power cable as this may damage
!
Press the Power button and wait about 30 seconds while the Clock configures itself. The display will
show in sequence: Scarlatti and either 44.1Hz or 48kHz.
the power inlet connector.
If the unit is likely to be set in an unfamiliar state, you can reset it as follows:
Press the Menu button, press the → button once, then the Menu button again to display the Clock
Settings menu. Press the ← button a few times to highlight the Factory Reset menu page. Press the
Menu button and wait a few seconds while the unit resets itself.
The GOLDEN RULES for using a Master Clock
• The source equipment MUST be locked to the Master Clock.
If it is not, you will either have locking difficulties or hear occasional clicks and the advantages of
using the Clock will be lost.
Some non-dCS CD transports, DAB radios and other equipment do not have a Word Clock Input
and so CANNOT be locked to a Master Clock.
• The clock frequency MUST match the sample rate(s) used in the system.
If it does not, the system cannot lock and the DAC may remain muted. Please check the
manuals for the equipment used in your system.
When the Scarlatti Clock is set to 44.1kHz, it may be used with DSD-based systems, CD
systems without an upsampler running at 44.1kHz or CD systems upsampling to 88.2kS/s or
176.4kS/s Dual AES.
When the Scarlatti Clock is set to 48kHz, it may be used with a DVD player or DAT recorder
fitted with a Word Clock Input running at 48kS/s, or upsampling to 96kS/s Dual AES or 192kS/s
Dual AES.
To make best use of the Scarlatti Clock, all the digital audio units in the chain should be locked to it.
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