1、 IEC 61606-2Edition 2.0 2009-07INTERNATIONAL STANDARD Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 2:Consumer use IEC 61606-2:2009(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPL
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9、x:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 61606-2Edition 2.0 2009-07INTERNATIONAL STANDARD Audio and audiovisual equipment Digital audio parts Basic measurement methods of audio characteristics Part 2:Consu
10、mer use INTERNATIONAL ELECTROTECHNICAL COMMISSION WICS 33.160.01 PRICE CODEISBN 2-8318-1051-7 Registered trademark of the International Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61606-2 IEC:2009(E)CO
11、NTENTS FOREWORD.5 1 Scope.7 2 Normative references.7 3 Terms,definitions,explanations and rated values.7 3.1 Terms and definitions.7 3.2 Explanation of terms“jitter”.8 3.3 Digital interface for measurement.8 3.4 Rated values.8 4 Measuring conditions.8 4.1 General.8 4.2 Environmental conditions.8 4.3
12、 Power supply.8 4.4 Test signal frequencies.8 4.5 Standard setting.8 4.6 Preconditioning.9 4.7 Measuring instruments.9 4.7.1 General.9 4.7.2 Digital level meter.9 4.7.3 Distortion meter.9 4.7.4 Analogue weighting filter.10 4.7.5 Digital weighting filter.10 4.7.6 Digital spectrum analyzer.10 5 Method
13、s of measurement(digital-in/analogue-out).10 5.1 General.10 5.2 Input/output characteristics.10 5.2.1 Maximum output amplitude.10 5.2.2 Gain difference between channels.11 5.3 Frequency characteristics.11 5.3.1 Frequency response.11 5.3.2 Group delay(phase linearity).12 5.4 Noise characteristics.13
14、5.4.1 Signal-to-noise ratio.13 5.4.2 Dynamic range.13 5.4.3 Out-of-band noise ratio.14 5.4.4 Channel separation.15 5.5 Distortion characteristics.16 5.5.1 Level non-linearity.16 5.5.2 Distortion and noise.17 5.5.3 Intermodulation.17 6 Methods of measurement(analogue-in/digital-out).18 6.1 General.18
15、 6.2 Input/output characteristics.18 6.2.1 Analogue to digital level calibration.18 6.2.2 Maximum allowable input amplitude.20 6.2.3 Gain difference between channel and tracking error.21 6.3 Frequency characteristics.23 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONL
16、Y,SUPPLIED BY BOOK SUPPLY BUREAU.61606-2 IEC:2009(E)3 6.3.1 Frequency response.23 6.3.2 Group delay.24 6.4 Noise characteristics.25 6.4.1 Signal-to-noise ratio(idle channel noise).25 6.4.2 Dynamic range.27 6.4.3 Folded noise.28 6.4.4 Cross-talk.29 6.4.5 Channel separation.31 6.5 Distortion characteristics.33 6.5.1 Level non-linearity.33 6.5.2 Distortion and noise.34 6.5.3 Intermodulation.35 Figure 1 Connection diagram of equipment.11 Figure 2 Connection diagram of equipment.11 Figure 3 Connectio