Dolby Laboratories 737 Dolby Laboratories Inc

Dolby Laboratories Inc

www.dolby.com

United States

100 Potrero Avenue

San Francisco, CA 94103-4813

Telephone 415-558-0200

Facsimile 415-863-1373

United Kingdom

Wootton Bassett

Wiltshire SN4 8QJ England

Telephone (44) 1793-842100

Facsimile (44) 1793-842101

WARNING: Troubleshooting must be performed by trained technicians. Do not

attempt to service this equipment unless you are qualified to do so.

DISCLAIMER OF WARRANTIES: Equipment manufactured by Dolby Laboratories is warranted against defects in materials and workmanship for a period

of one year from the date of purchase. All warranties, conditions or other terms implied by statute are excluded to the fullest extent allowed b y law.

LIMITATION OF LIABILITY: It is understood and agreed that Dolby Laboratories’ liability whether in contract, in tort, under any warranty, in negligence

or otherwise shall not exceed the cost of repair or replacement of the defecti ve components and under no circumstances shall Dolby Laboratories be

liable for incidental, special, direct, indirect or consequential damages ( including but not limited to damage to software or record ed audio or visual mate-

rial), or loss of use, revenue or profit even if Dolby Laboratories or its age nts have been advised, orally or in writing, of the possibility of such damages.

Dolby and the double-D symbol are registered trademarks of Dolby Laboratories.

©2000 Dolby Laboratories Inc; all rights reserved. W01/111

MAIN

Contents

Main Dolby Laboratories Inc Table of Contents List of Figures List of Tables Chapter 1 Introduction Chapter 2 Operation and Features Chapter 3 Cat. No. 448B Input Adapter Board Chapter 4 Specifications Appendix A Background List of Figures List of Tables Chapter 1 Introduction Chapter 2 Operation and Features 2.1 Front Panel Controls 6/4 - 2 channel switch Start Trip Set Cal 2.1.1 6/4 2 Channel Switch 2.1.2 Input Trimpots 2.1.3 Trip Set 2.1.4 Pushbuttons Model 737 Soundtrack Loudness Meter - Leq(m) Operation and Features 2.2 Back Panel Connectors Figure 2-3 Model 737 back panel 2.2.1 Analog Audio Inputs Figure 2-4 Audio input connectors (detail of rear panel) The XLR input connectors for channels 16 use the following wiring convention: 2.2.2 Mon Out 2.2.3 DC Out 2.2.4 Power and Control 2.3 Connection and Calibration 2.3.1 Connecting to an Audio Console 2.3.2 Connecting to a Dolby Cinema Processor 2.3.3 Connecting to a DA10/20 Digital Adapter 2.3.4 Connecting to Non-Dolby Digital Adapters 2.3.5 Connecting to the SDU4 Surround Decoder 2.3.6 Calibration Procedure 2.3.7 Automated Input Adapter Board (Cat. No. 448B) 2.4 Mains Power 2.5 Interface 2.5.1 Grounding Model 737 Soundtrack Loudness Meter - Leq(m) Operation and Features 2-10 2.6 Block diagram Figure 2-6 Model 737 block diagram L/Lt C Ls R/Rt Sub Rs Page Chapter 3 Cat. No. 448B Input Adapter Board 3.1 Introduction 3.2 Logic map Model 737 Soundtrack Loudness Meter - Leq(m) Cat. No. 448B Input Adapter Board 3-2 3.3 Component and Connector Layout x2 (Lt/Rt - opt) CAT. NO. 448B Cat. No. 448B Figure 3-1 Cat. No. 448B Interface Adapter 3.4.3 Alignment 3.5 Dubbing studio Page 3.5.1 Alignment Page Chapter 4 Specifications Temperature and Humidity EMC Limits General Appendix A Background A.1 Loudness A.1.1 The Current Situation Page A.2 How Loud Is a Movie? A.3 Standardizing a Measurement Technique for Soundtrack Loudness A.3.1 Alternative Measurement Indices A.4 Analysis of the Data Page Model 737 Soundtrack Loudness Meter - Leq(m) Background A-8 Figure A-5 Comparison of Leq(m) and peak levels Shine demo 1 (Rach. III) Leq CCIR-weighted Peak Level C-weighted, fast 5.6 dB offset dB A.4.1 Verification of the Data Leq CCIR-weighted Peak Level C-weighted, fast