IEC 62553:2012(E) is intended to establish measuring methods that enable the objective evaluation of the performance of transmission networks so as to make stable DTTB services a reality and establish a technical baseline, such as a definition of technical terms, to standardize measuring methods. The measurement methods described are intended for digital terrestrial television transmission network test and validation.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 6<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 3 Terms and abbreviations <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 General conditions of measurement 4.1 Definitions and classifications of digital terrestrial TV transmission network 4.1.1 General <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.1.2 Network classification for transmitting frequencies Figures Figure 1 \u2013 Example of transmission network <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.1.3 Network classification on useable contribution links for signal transport system between stations 4.2 Signal form 4.2.1 TS signal form 4.2.2 IF signal form 4.3 Test signals and auxiliary signals for measurement 4.3.1 Test signals Tables Table 1 \u2013 Classification of contribution link Table 2 \u2013 Parameter set of OFDM signal for test in ISDB-T system <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.3.2 Auxiliary signals for measurement 5 Methods of measurement for signal delay time 5.1 Scope Table 3 \u2013 Parameter set of OFDM signal for test in DVB-T\/H system <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 5.2 Definition of signal delay time 5.2.1 Delay time 5.2.2 Relative delay time difference 5.3 Direct\/indirect measurement 5.3.1 General Figure 2 \u2013 Delay time and relative delay time difference definitons Table 4 \u2013 Combination of signal type <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.3.2 Direct measurement system 5.3.3 Indirect measurement system 5.4 Measurement place Figure 3 \u2013 Direct and indirect measurement method <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.5 Classification of measurement system <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Table 5 \u2013 Classification of measurement system for signal delay time <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 6 Methods of measurement for performances of radio wave relay station 6.1 Scope 6.2 Measurement diagram and measurement items 6.2.1 General 6.2.2 Measurement diagram Figure 4 \u2013 Measurement diagram of received signal of relay station (case a)) Figure 5 \u2013 Measurement diagram of relay station (case b)) <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 6.2.3 Measurement items 6.3 Methods of measurement 6.3.1 General Table 6 \u2013 An example of measurement items for Relay station <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 6.3.2 BER (case 2) <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 6.3.3 Equivalent noise degradation (END) Figure 6 \u2013 BER- Measurement method <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 6.3.4 Amplitude frequency characteristics Figure 7 \u2013 Definition of END <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 6.3.5 Delay profile 6.3.6 Phase jitter Figure 8 \u2013 Measurement diagram of amplitude-frequency characteristics Figure 9 \u2013 Measurement block diagram of delay profile Table 7 \u2013 Example of the parameter set of spectrum analyzer <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Figure 10 \u2013 Reference model <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 7 Methods of measurement for performances of signal quality improvement instrument used in radio wave relay station 7.1 General <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 7.2 Classification of signal quality improvement instrument 7.3 Measurement diagram and measurement condition 7.4 Common measurement items Figure 11 \u2013 Conceptual diagram of relay station using a compensator Table 8 \u2013 Compensators used in digital terrestrial broadcasting relay network <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 7.5 Methods of measurement for each kind of compensator Table 9 \u2013 Examples of measurement items for signal quality improvement instrument <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | Annex A (informative) Examples of measurement methods for signal delay Figure A.1 \u2013 General measurement system for cases 1\u00a0 to \u00a03 Table A.1 \u2013 Signal format and timing extraction of each case <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Figure A.2 \u2013 Example of frame sync signal extracting part <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Figure A.3 \u2013 Example of OFDM demodulator for frame timing extraction <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Figure A.4 \u2013 Block diagram of direct measurement methods for time delay of OFDM signal Table A.2 \u2013 Equipment list for measurement <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Figure A.5 \u2013 Example of frequency characteristics of combined signal Figure A.6 \u2013 Example of delay profile of combined signal <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Figure A.7 \u2013 General measurement system for cases 5,6,13 and 14 Figure A.8 \u2013 Timing chart for signal delay measurement <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Figure A.9 \u2013 Principle of measurement using 1 pps signal <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Figure A.10 \u2013 General measurement system for cases 7, 8 and 15,16 <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Figure A.11 \u2013 Measurement system for delay time (time reference is 1pps signal of GPS) Table A.3 \u2013 Equipment list for delay time measurement <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Figure A.12 \u2013 Timing relation of each signals <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Figure A.13 \u2013 Delay profile of OFDM signal <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Annex B (informative) Examples of measurement methods for signal quality of relay stations Table B.1 \u2013 Definition of Null Packet (in case of ISDB-T) <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Figure B.1 \u2013 BER measurement conceptual diagram for Null Packet method Figure B.2 \u2013 Examples of measurement result by Null Packet method <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Figure B.3 \u2013 Method to compare the data before\/after correction <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Figure B.4 \u2013 Superimposed C\/N measurement system <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Table B.2 \u2013 Example of noise power measurement parameters (6\u00a0MHz ISDB-T) Table B.3 \u2013 Example of signal power measurement parameters (6\u00a0MHz ISDB-T) <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | Figure B.5 \u2013 Inherent degradation of OFDM demodulator measurement system <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | Figure B.6 \u2013 Calculation process of delay profile <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Annex C (normative) Principle and methods of measurement of compensators <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Figure C.1 \u2013 Example of measurement block diagram for performances of loop-back canceller <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Figure C.2 \u2013 Example of measurement block diagram for performances of diversity reception equipment <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | Figure C.3 \u2013 Example of measurement block diagram for performances of co-channel interference canceller <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | Figure C.4 \u2013 Example of measurement block diagram for performances of C\/N Reset equipment <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Methods of measurement for digital network. Performance characteristics of terrestrial digital multimedia transmission network<\/b><\/p>\n |