Lucid SRC9624 Manuel utilisateur

SRC9624

High Definition Sample Rate Converter

User’s Guide

TABLE OF CONTENTS

Section 1 Introduction 1

Section 2 Operator Safety Summary 2

Section 3 Fast Setup 4

Section 4 Product Description

SRC9624 Front Panel 7

SRC9624 Rear Panel 8

Section 5 Using the SRC9624 9

Section 6 Specifications 15

Section 7 Warranty and Service 16

Section 8 Declaration of Conformity 17

Rev A.01, March 2000

Part number 53SR960A01

Specifications subject to change without notice.

Lucid is a registered trademark of Symetrix, Inc.

Mention of third-party products is for informa-

tional purposes only and constitutes neither an

endorsement nor a recommendation. Lucid

assumes no responsibility with regard to the

performance or use of these products.

Under copyright laws, no part of this manual may

be reproduced or transmitted in any form or by

any means, electronic or mechanical, including

photocopying, scanning, recording, or by any

information storage and retrieval system, without

permission in writing from Lucid.

6408 216th St. SW

Mountlake Terrace, WA 98043

Tel: 425.778.7728

Fax: 425.778.7727

Email: lucid@lucidtechnology.com

Web site: www.lucidaudio.com

The Lucid SRC9624 High Definition Sample Rate Converter is a two-channel digital audio

sample rate converter intended for playback, mastering, post production, broadcast, or any

application requiring an extremely adaptable sample rate converter of the highest possible

quality.

The SRC9624 supports a range of sample rates and 16-, 20-, and 24-bit word sizes. Using

asynchronous conversion algorithms, it handles any input rate from 30 kHz to 100 kHz, in-

cluding varispeed and common pull-up and pull-down rates. The SRC9624 also supports

single- and dual-wire connections in 96 kHz (high-resolution) digital audio so you can interface

gear using either format. It can also convert two single-wire stereo streams at rates up to 96 kHz

to any standard common output rate, providing you with two sample rate converters in a single

box. Finally, AES11 and word clock external sync capabilities, along with a wide range of

industry-standard internally generated clocks, ensure easy synchronization between almost any

digital audio equipment, whether it’s professional or consumer.

We recommend that you read this manual from cover to cover. Somewhere between the con-

fines of the two covers you should find the answers to most (98%) of your questions, both

technical as well as musical. Please feel free to contact us if you have additional questions,

comments, or suggestions.

Phone:425.778.7728

Fax:425.778.7727

WWW: www.lucidaudio.com

Email: [email protected]

INTRODUCTION SECTION 1

SRC9624 Front view.

SRC9624 Rear view.

Equipment Markings

The lightning flash with arrowhead symbol within an

equilateral triangle is intended to alert the user of the

presence of uninsulated “dangerous voltage” within the

product's enclosure that may be of sufficient magnitude to

constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is

intended to alert the user of the presence of important

operating and maintenance (servicing) instructions in the

literature accompanying the product (i.e. this manual).

Caution To prevent electric shock, do not use the polarized plug

supplied with the unit with any extension cord, receptacle, or other outlet

unless the blades can be fully inserted.

Terms

The following are notational conventions used in this user guide:

Note Identifies information that needs extra emphasis. Supplies extra information to help you to better use

the product.

Caution Identifies information that, if unheeded, may cause damage to the Lucid product or other equipment in

your system.

Warning Identifies information that, if ignored, may be hazardous to your health or that of others.

CAPITALS Controls, switches, or other markings on the product’s chassis.

Important Safety Instructions

Please read and keep these instructions. Follow all warnings and instructions.

Mains Voltage Selection The Lucid SRC9624 uses an auto-sensing power supply and can

operate from 90 to 250 VAC, at 50–60 Hz. Therefore, there is no

need for the user to set the mains voltage prior to use.

Power Source This product is intended to operate from a power source that does

not apply more than 250V rms between the power supply conductors

or between either power supply conductor and ground. A protective

ground connection, by way of the grounding conductor in the power

cord, is essential for safe operation.

Grounding The chassis of this product is grounded through the grounding

conductor of the power cord.To avoid electric shock, plug the power

OPERATOR SAFETY SUMMARY

AVIS: NE PAS OUVRIR

Il ne se trouve a l’interieur aucune piece pourvant entre reparée l’usager.

SEE OWNERS MANUAL.VOIR CAHIER D’INSTRUCTIONS.

S’adresser a un reparateur compétent.

RISQUE DE CHOC ELECTRIQUE

No user serviceable parts inside.Refer servicing to qualified service personnel.

CAUTION

WARNING: TO REDUCE THE RISK OF FIRE OR

ELECTRIC SHOCK DO NOT EXPOSE

THIS EQUIPMENT TO RAIN OR MOISTURE

DO NOT OPEN

RISK OF ELECTRIC SHOCK

SECTION 2

cord into a properly wired receptacle before making any connections

to the product. A protective ground connection, by way of the

grounding conductor in the power cord, is essential for safe opera-

tion. Do not defeat the safety purpose of the grounding plug.The

grounding plug has two blades and a third grounding prong. The

third prong is provided for your safety. When the provided plug does

not fit your outlet, consult an electrician for replacement of the outlet.

Danger from If the protective ground connection is lost, all accessible conductive

Loss of Ground parts, including knobs and controls that may appear to be insulated,

can render an electric shock.

Proper Power Cord Use only the power cord and connector specified for the product and

your operating locale. Use only a cord that is in good condition. Protect

the power cord from being walked on or pinched, particularly at plugs,

convenience receptacles, and the point where they exit from the apparatus.

Operating Location Do not operate this equipment under any of the following conditions:

explosive atmospheres, in wet locations, in inclement weather, improper

or unknown AC mains voltage, or if improperly fused. Do not install

near any heat source such as radiators, heat registers, stoves, or other

apparatus (including amplifiers) that produce heat. Unplug this apparatus

during lightning storms or when unused for long periods of time.

Stay Out of the Box To avoid personal injury, do not remove the product covers or panels.

Do not operate the product without the covers and panels properly

installed. Only use accessories specified by the manufacturer. Clean

only with a damp cloth.

User-serviceable parts There are no user serviceable parts inside the SRC9624. In case of

failure, refer all servicing to the factory. Servicing is required when the

SRC9624 has been damaged in any way, such as when a power supply

cord or plug is damaged, liquid has been spilled or objects have fallen

into the apparatus, the apparatus has been exposed to rain or moisture,

does not operate normally, or has been dropped.

FAST SETUP SECTION 3

This section discusses getting signals in and out of the SRC9624 and using it.

Digital Input Connections

It is not necessary to connect all of these connectors at any given time. The connectors used or

not used depend on your specific application. The INPUT SOURCE switches let you select the

input source from the three connectors provided.

Connect the AES/EBU input connectors to AES/EBU digital audio sources. For long cable

runs, you should use 110-ohm shielded twisted pair cable.

Connect the Coaxial (S/PDIF) connectors to consumer audio digital outputs. This connector

floats from the chassis ground.

Use the Optical connector to connect to S/PDIF optical digital outputs.

Digital Output Connections

Like the digital inputs, it is not necessary to connect to all of these connectors at once. Use the

ones you need; they are all active at once, and there is no interaction between them.

Connect the AES3 outputs to any AES/EBU receiver. For long cable runs, you should use 110-

ohm shielded twisted pair cable.

Connect the Coaxial (S/PDIF) connectors to consumer audio digital inputs. This connector

floats from the chassis ground.

Use the Optical connectors to connect to a S/PDIF optical digital input.

Sync Connections

The AES11 XLR connector accepts either sync signals or digital audio (of course, the audio is

ignored). You enable this connector via the OUTPUT SAMPLE RATE selector switch. This

input accepts both “black” AES signals (i.e., signals with AES clock info but no audio) as well as

normal AES digital audio signals. In the latter case, the audio is stripped out of the signal,

leaving the clock only. The input accepts sample rates from 30 kHz to 100 kHz.

The WORD IN BNC connector accepts word clock. This input does not terminate. If the

SRC9624 is the last unit in a chain, you must use a tee connector at the input along with a 75-

ohm terminator. The input accepts sample rates from 30 kHz to 100 kHz.

The WORD OUT BNC connector follows the sample rate of the outputs. It is NOT a thru

connection of the WORD IN connector.

Mode Selection

Each portion of the SRC9624 uses three-position toggle switches to move the selection up or

down. For the inputs, if the digital receiver does not achieve lock (no signal, or bad signal), the

INPUT STATUS LEDs will not illuminate. Once the input locks, the status LEDs display the

status information contained in the input signal.

The toggle switches and their associated LED stacks are designed to allow scrolling down or up

through each user-controllable parameter.

Nonvolatile Memory

Approximately a half second after the last switch change, the LEDs will blink, indicating that

the current configuration has been written to nonvolatile RAM. The next time the unit is

powered up, it will remember its last state and initialize in that configuration.

Routing

The routing switch determines how the inputs connect to the outputs. Choose an appropriate

setting for your application.

Independent The two inputs drive the two outputs. The signals remain separate. The

output sample rate of both outputs depends on the setting of the OUTPUT

SAMPLERATE selector switch.

Distribution The SRC9624 acts as a distribution amplifier, with Input A driving both

outputs.

96 kHz Dual These settings allow the SRC9624 to convert signals to or from the 96 kHz

AES Settings dual-wire AES format.

The first Dual AES mode takes a stereo 96k signal which has been split into 2 mono signals

running at a 48k frame rate, and converts it to 1 stereo signal on 1 wire, at any of the possible

sample rates.

The second Dual AES mode does the opposite. It takes a single wire 96k signal and splits it into

2 wires—1 with left and 1 with right—both running at a 48k frame rate. The output sample

rate should be set to the signal rate in this case (i.e., 96k). If you were to set the output rate to

48k, the signal will actually be sent at a 24 kHz frame rate, a format which is not generally

used.

Input A Source

The INPUT A switch selects the desired source connection for INPUT A. The INPUT A

STATUS LEDs monitor certain bits in the digital audio stream—pro or consumer, and audio

or non-audio (e.g., AC3). These bits are fed through the unit to the output. If the selected

input is not present, the input A source LED flashes.

Input B Source

The INPUT B switch selects the desired source connection for Input B, either XLR, coaxial, or

TOSLINK. The INPUT B STATUS LEDs will monitor certain bits in the digital audio

stream—pro or consumer, and audio or non-audio (e.g., AC3). These bits are fed through the

unit to the output. If the selected input is not present, the Input B source LED flashes.

Output Sample Rate

The OUTPUT SAMPLE RATE switch determines the sample rate of the digital audio output

on both outputs A and B. For word clock input, AES11 Sync input and Input A input, the

selected sync source’s LED will flash if a valid clock signal is not present on that connector. For

the internal clock frequencies, the selected sync source’s LED illuminates.

Output Dither

This switch determines the word length of all outputs. None indicates no dithering. Settings of

20-bit or 16-bit indicate that the output signal has been dithered, using triangular PDF dither-

ing, to these word lengths.

PRODUCT DESCRIPTION - SRC9624 FRONT PANEL SECTION 4

Feature Description

ROUTING LEDs indicate the current signal routing. The toggle switch moves

the selection up or down. There are four routing modes.

Independent Input A drives Output A, Input B drives

Output B.

Distribution Input A drives Output A and Output B.

96 kHz Dual Inputs A and B receive two-wire AES signals at

AES (source) 96 kHz sample rate. The SRC9624 merges the

two signals, and outputs at the selected sample

rate in single-wire format via Output A.

96 kHz Dual Input A receives 96 kHz signal and the SRC9624

AES (receiver) converts it to two-wire format. The outputs appear

on Digital Output A and Digital Output B.

INPUT A STATUS LEDs indicate the settings of the status bits in the signal applied

to Input A. The LEDs illuminate only when the input has locked

on a valid signal.

INPUT A SOURCE LEDs indicate the signal source for Input A. The toggle switch

moves the selection up or down.

INPUT B STATUS LEDs indicate the settings of the status bits in the signal applied

to Input B. The LEDs illuminate only when the input has locked

on a valid signal. The toggle switch moves the selection up or

down.

INPUT B SOURCE LEDs indicate the signal source for Input B. The toggle switch

moves the selection up or down.

OUTPUT SAMPLE LEDs indicate the output sample rate. The output sample rate can

be derived from the sync inputs, Input A, or set to 32 kHz,

44.1 kHz, 48 kHz, 88.2 kHz, or 96 kHz.

OUTPUT DITHER LEDs indicate the output dither setting. The toggle switch moves

the selection up or down. The SRC9624 uses triangular PDF

function dithering. There is no noise shaping.

POWER SWITCH Turns the unit on or off.

PRODUCT DESCRIPTION - SRC9624 REAR PANEL

IEC POWER Accepts AC mains voltage. The SRC9624 uses a switching power

CONNECTOR supply that automatically adjusts to the applied voltage. Ensure

that your AC mains voltage is between 90–250 VAC, 50–60 Hz.

Sync Connectors

WORD OUT BNC connector. Supplies word clock signal at the same rate as the

output sample rate. This is not a thru-connection to the WORD

IN connector.

WORD IN BNC connector. Accepts word clock signal from an external

source. This is a bridging input (non-terminating). If the SRC9624

is the last unit connected to the word clock cable, the cable must

be terminated. Use a tee connector and a 75-ohm terminator.

AES11 XLR-female connector. Accepts AES11 (AES/EBU) signals. This

could be a sync-only signal or it could be a digital audio signal

(the audio portion is ignored).

Digital Output A and B

The two sets of outputs are driven separately and there is no interaction between the connec-

tors. Connect to any or all, as required by your application. Signals appearing at these outputs

vary according to the setting of the ROUTING selector switch.

OPTICAL (S/PDIF) TOSLINK connector. Carries S/PDIF signal.

COAXIAL (AES3-S/PDIF) BNC* connector. Carries S/PDIF-AES3 signal.

AES3 XLR-male connector. Carries AES3 signal. Long cable runs require

110-ohm shielded twisted-pair cable.

Digital Input A and B

The digital inputs are all separate; any or all may be connected. The actual connector used as

the signal source depends on the setting of the INPUT A SOURCE or INPUT B SOURCE

selector switches. Input A may also be used as a sync or sample rate source.

OPTICAL (S/PDIF) TOSLINK connector. Carries S/PDIF signal.

COAXIAL (AES3-S/PDIF) BNC* connector. Carries S/PDIF-AES3 signal.

AES3 XLR-male connector. Carries AES3 signal. Long cable runs require

110-ohm shielded twisted-pair cable.

*BNC to RCA adapters are included with the SRC9624. Use these adapters if you are

connecting to equipment with RCA/coaxial connectors.

SECTION 4

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