Lexicon Converter manual Precautions

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Precautions

The 20/20 AD is a rugged device with extensive electronic protection. However, you should observe the same reasonable precautions that apply to any piece of audio equipment:

Always use the correct line voltage.

Do not install the 20/20 AD in a closed, unventilated rack, or directly above heat-producing equipment such as power amplifiers.

Never attach audio power amplifier outputs (speaker outputs) directly to any of the 20/20 AD's connectors.

To prevent fire or shock hazard, do not expose the 20/20 AD to rain or moisture.

Notice

This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer's instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are designated to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment OFF and ON, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient the receiving antenna

Relocate the computer with respect to the receiver Move the computer away from the receiver

Plug the computer into a different outlet so that the computer and receiver are on different branch circuits.

If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find the following booklet prepared by the Federal Communications Commission helpful:

"How to identify and Resolve Radio/TV Interference Problems."

This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000- 00345-4.

This triangle, which appears on

 

 

your component, alerts you to

 

 

 

the presence of uninsulated,

 

 

 

CAUTION

 

dangerous voltage inside the

 

 

 

 

 

 

enclosure...voltage that may be

 

RISK OF ELECTRIC SHOCK

 

sufficient to constitute a risk of

 

 

 

 

 

DO NOT OPEN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

shock.

 

 

Copyright © 1994

Lexicon Inc.

 

100 Beaver Street

 

Waltham MA 02154-8441 USA

 

617-736-0300

 

Fax: 617-891-0340

All Rights Reserved

 

This triangle, which appears on your component, alerts you to important operating and main- tenance instructions in this ac- companying literature.

This publication is protected by copyright and all rights are reserved. No part of it may be reproduced or transmitted by any means or in any form, without express prior consent in writing from Lexicon.

Lexicon Part # 070-09090 Rev 2

Printed in the United States of America

 

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Contents 20/20 AD Precautions Safety Summary Electrostatic Discharge ESD PrecautionsContents Introduction AES/EBU Interface ProfessionalControls and Connectors Power Mounting20/20 AD Front Panel Controls ConverterDisplay Level MetersCompressor LinkTo activate Alternate modes Synchronization Output FormattingAlternate Modes Press and hold Then press one of these20/20 AD Rear Panel Connectors BAL/UNBALXLR Pinout ConnectorsAudio Connections Pdif CablesAES/EBU Termination and Grounding via Internal Jumpers Signal Type Attenuator DBu DBVSignal Type Pin Pin3 These instructions are for use by qualified personnel only Word ClockAnalog Jumpers Balanced Unbalanced Input Signals Atten Front panel AdjustmentsPK Hold ChanSynchronization and Sample Rate AES Sync Word ClockStates Internal and External modesAbout Dither Psychoacoustically Optimized Noise Shaping Pons00k 10.0k 12.0k 14.0k 16.0k 18.0k Automatic Offset Removal Compressor Modes Dynamic Range CompressionInput Compressor Knob Values Gain Threshold ReleaseNon-linear Transfer FunctionsUsing the 20/20 AD Lexicon Link Gain Realigning Two DAT RecordingsDigital Sinewave Generator Operating the 20/20 AD in the Digital Mode Specifications CmrrDefinition of Terms