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Audiovisual Systems Performance Verification Guide

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Audiovisual Systems Performance Verification Guide Audiovisual Systems Performance Verification Guide For use with ANSI/InfoComm 10:2013, Audiovisual Systems Performance Verification Copyright 2014 InfoComm International® All rights reserved. Printed in the United States of America Published by InfoComm International, 11242 Waples Mill Road, Suite 200, Fairfax, VA 22030- 6079 No part of this work may be used, reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording or by any information storage and retrieval system, without prior agreement and written permission from InfoComm International®. The contents of this work are subject to revision without notice due to continued progress in methodology, design, installation and manufacturing in the audiovisual industry. This material is sold as is, without warranty of any kind, respecting the contents of this work, including but not limited to implied warranties for this work’s quality, performance, merchantability or fitness for any particular purpose. InfoComm International shall not be liable to the purchaser, user or any other entity with respect to any liability, loss or damage caused directly or indirectly by this work. AUDIOVISUAL SYSTEMS PERFORMANCE VERIFICATION GUIDE Acknowledgments AV Systems Verification Task Force Richard Morrison, CTS®, BE (Computer Systems) Norman Disney & Young (Chair) Tim Bailey, Waveguide Consulting, Inc. Ashish Bajaj, Harman Pro Group Jason Brameld, PTS Consulting Paul Depperschmidt, CTS, Cisco Systems, Inc. Dan Doolen, University of Illinois Mike Izatt, CTS-D®, Spectrum Engineers, Inc. Shane Myers, CTS-D, CTS-I®, ISF-C, AV3, Inc. Allan Rea, Shen Milsom & Wilke Scott Tomashek, CTS-D, Camera Corner, Inc. iii Contents Contents Acknowledgments .............................................................................................................................. iii Contents .............................................................................................................................................. iv Figures ................................................................................................................................................. xi Tables .................................................................................................................................................. xii Introduction .......................................................................................................................................... 1 A Few Notes About Verification Item Selection and Reporting ........................................................ 1 InfoComm’s APEx Program .............................................................................................................. 2 Errata ................................................................................................................................................ 2 Verification Item Descriptions ............................................................................................................ 3 Audio System Performance .............................................................................................................. 3 AP-100 Emergency Systems Muting ............................................................................................. 3 AP-101 Loudspeaker Zoning ......................................................................................................... 4 AP-102 Alignment of Multiple Audio Source Levels ...................................................................... 6 AP-103 Audio Buzz and Rattles ..................................................................................................... 8 AP-104 Audio Routes ..................................................................................................................... 8 AP-105 Reverberation Time ........................................................................................................... 9 AP-106 DSP Programming .......................................................................................................... 11 AP-107 Loudspeaker Physical Alignment .................................................................................... 13 AP-108 Loudspeaker Polarity ...................................................................................................... 14 AP-109 Loudspeaker Time Alignment ......................................................................................... 14 AP-110 Phantom Power .............................................................................................................. 17 AP-111 Loudspeaker Transformer Tap Setting ........................................................................... 18 AP-112 Acoustical Ambient Noise ............................................................................................... 18 AP-113 Assistive Listening Devices ............................................................................................. 23 AP-114 Audio Coverage in Listener Areas ................................................................................... 25 AP-115 Audio Dynamics .............................................................................................................. 25 AP-116 Audio Level Exceeds Background Noise Level .............................................................. 26 AP-117 System Electronic Frequency Response ........................................................................ 28 iv AUDIOVISUAL SYSTEMS PERFORMANCE VERIFICATION GUIDE AP-118 Audio System Equalization for Spectral Balance ............................................................ 30 AP-119 Audio System Latency .................................................................................................... 33 AP-120 Audio System Speech Reproduction at Listener Positions ............................................ 35 AP-121 Audio System Total Harmonic Distortion ........................................................................ 37 AP-122 Conferencing Audio Levels ............................................................................................. 38 AP-123 Conferencing Echo Suppression Performance ............................................................... 39 AP-124 Loudspeaker Impedance ................................................................................................ 41 AP-125 Microphone Physical Alignment and Placement ............................................................ 43 AP-126 Microphone Gain Before Feedback ................................................................................ 44 AP-127 Microphone Level Alignment .......................................................................................... 45 AP-128 Multi-channel Loudspeaker System Output ................................................................... 47 AP-129 Sound Masking ............................................................................................................... 47 AP-130 Audio Reinforcement System Headroom ....................................................................... 50 AP-131 Audio System Signal-to-Noise Ratio .............................................................................. 51 Video System Performance ............................................................................................................ 53 VP-100 EDID Management Plan .................................................................................................. 53 VP-101 HDCP Management Plan ................................................................................................ 55 VP-102 Projected Display Physical Alignment ............................................................................. 55 VP-103 Video System Pixel Failure Tolerance ............................................................................. 56 VP-104 Image Geometry .............................................................................................................. 58 VP-105 Displayed Image Performance ........................................................................................ 59 VP-106 Colorimetry ...................................................................................................................... 60 VP-107 Multiple Resolution Performance of Video Displays ....................................................... 61 VP-108 Projected Display Brightness Uniformity ........................................................................ 62 VP-109 Projected Image Contrast Ratio ...................................................................................... 64 VP-110 Test Video Routes ........................................................................................................... 66 VP-111 Video Camera Image and Operation ............................................................................... 66 Audio/Video System Performance .................................................................................................. 67 AVP-100 Emergency Communications ........................................................................................ 67 AVP-101 Genlocking (Video Synchronization) ............................................................................. 68 AVP-102 Audio and Video Recording .......................................................................................... 69 AVP-103 Audio/Video Sync ........................................................................................................
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