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DCS none User Manual

Dcs digital audio master clock user manual
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dCS Scarlatti Clock
Digital Audio Master Clock

User Manual

Software Release 1.0x
June 2008
Price UK £8.00 / Euro 12.00
© Data Conversion Systems Ltd. 2007-8
All rights reserved. No part of this publication may be reproduced, stored in or introduced into a retrieval system,
or transmitted in any form, or by any means (electronic, mechanical, photocopying, recording or otherwise)
1
without the prior written permission of dCS
. Any person who does any unauthorised act in relation to this
publication may be liable to criminal prosecution and civil claims for damages.
Information contained in this manual is subject to change without notice, 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.

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  • Page 1: User Manual

    Information contained in this manual is subject to change without notice, and whilst it is checked for accuracy, no liabilities can be accepted for errors. dCS is Data Conversion Systems Ltd. Company registered in England No. 2072115.
  • Page 2 Scarlatti Clock User Manual Software Issue 1.0x June 2008 Page 2 Filename: Scarlatti Clock Manual v1_0x.doc English version...

  • Page 3: Table Of Contents

    Scarlatti Clock User Manual ONTENTS Contents ... 3 Using the dCS Scarlatti Clock for the first time ... 4 What’s in the box? Safety Notice Mains Voltage Setting Power Cables Mains Regenerators Positioning the unit Disposal at end-of-life STEP-BY-STEP GUIDE ... 6...

  • Page 4: Using The Dcs Scarlatti Clock For The First Time

    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 Update feature.

  • Page 5: Mains Regenerators

    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.

  • Page 6: Step-By-Step Guide

    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.

  • Page 7: Connecting The System For Dsd

    • If necessary, use the FREQUENCY • Connect one of the Clock outputs to the Word Clock inputs of the transport and the DAC. • Connect a 1394 cable between the DAC and the transport. Select the DAC’s • The transport will automatically slave to the Clock and display Sync.

  • Page 8: Connecting The System For Dual Aes

    Using an External Reference If you have a GPS receiver or an atomic clock with a 10MHz output, you can lock the Scarlatti Clock to it. These sources are even more accurate than the Scarlatti Clock, but note that low jitter and stability are more important than absolute accuracy.

  • Page 9: Front Panel

    Press the DITHER button (C) to turn the Dither feature on and off. This dithers the clock edges in a controlled way to exercise the phase-locked–loops in the source and DAC. Try it and decide for yourself whether you prefer Dither on or off.

  • Page 10: Display

    Scarlatti Clock User Manual Display In normal use, the clock frequency is shown at the top of the display (D), for example: The icons at the bottom show the current settings or operating conditions. From the left, these are: •...

  • Page 11: Rear Panel

    32, 44.1, 48, 88.2 or 96kHz. With the lock to a 10MHz reference. As the Scarlatti Clock is a grade 1 master clock, there is nothing to be gained by locking it to a less stable or less accurate reference!

  • Page 12: The Menu

    Scarlatti Clock User Manual Press "Step >" to move along the Menu, press "< Step" to move back. MENU Press "Select" to set a menu option or change options. Information Version Displays the loaded software issues and serial number...

  • Page 13: Using The Menu

    Scarlatti Clock User Manual Using the Menu The menu gives the user access to a range of additional features. It also allows new features and performance enhancements to be added at a later date by software upgrades. The menu is controlled by four buttons.

  • Page 14: Information Menu

    Please have this information ready if you contact your dealer for any reason. Contact page displays dCS web-site URL, email address, telephone and fax numbers. If you have any difficulty, please contact your dealer for help first. Clock Information Output frequency ...kHz...

  • Page 15: Specification

    Word Clock Outputs 8 independently buffered outputs on 75Ω BNC connectors, all carry the same clock frequency. Reference Input External Reference Input on 1x 75Ω BNC connector. Accepts word clock (with the Coupling 96kHz, 1MHz, 5MHz or 10MHz. Lock range is +/-300ppm.

  • Page 16: Maintenance And Support

    Spare fuses are provided with the unit. Cleaning the case The front and back panels of your dCS equipment are machined from very high grade aluminium. Great care has been taken to create the finish of the aluminium throughout the engineering process from the raw solid material to the finished piece.

  • Page 17: Limited Warranty

    issued.

  • Page 18: If You Need More Help

    A bound copy of this manual may be ordered from dCS. Software History dCS products make extensive use of software configurable chips – FPGAs and DSPs. This gives us the ability to update our products to add extra features, update digital interface standards or make performance improvements by loading new software.

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