BS EN 62553:2013
$198.66
Methods of measurement for digital network. Performance characteristics of terrestrial digital multimedia transmission network
| Published By | Publication Date | Number of Pages |
| BSI | 2013 | 58 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | CONTENTS |
| 9 | 1 Scope 2 Normative references |
| 10 | 3 Terms and abbreviations |
| 11 | 4 General conditions of measurement 4.1 Definitions and classifications of digital terrestrial TV transmission network 4.1.1 General |
| 12 | 4.1.2 Network classification for transmitting frequencies Figures Figure 1 – Example of transmission network |
| 13 | 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 – Classification of contribution link Table 2 – Parameter set of OFDM signal for test in ISDB-T system |
| 14 | 4.3.2 Auxiliary signals for measurement 5 Methods of measurement for signal delay time 5.1 Scope Table 3 – Parameter set of OFDM signal for test in DVB-T/H system |
| 15 | 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 – Delay time and relative delay time difference definitons Table 4 – Combination of signal type |
| 16 | 5.3.2 Direct measurement system 5.3.3 Indirect measurement system 5.4 Measurement place Figure 3 – Direct and indirect measurement method |
| 17 | 5.5 Classification of measurement system |
| 18 | Table 5 – Classification of measurement system for signal delay time |
| 19 | 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 – Measurement diagram of received signal of relay station (case a)) Figure 5 – Measurement diagram of relay station (case b)) |
| 20 | 6.2.3 Measurement items 6.3 Methods of measurement 6.3.1 General Table 6 – An example of measurement items for Relay station |
| 21 | 6.3.2 BER (case 2) |
| 22 | 6.3.3 Equivalent noise degradation (END) Figure 6 – BER- Measurement method |
| 23 | 6.3.4 Amplitude frequency characteristics Figure 7 – Definition of END |
| 24 | 6.3.5 Delay profile 6.3.6 Phase jitter Figure 8 – Measurement diagram of amplitude-frequency characteristics Figure 9 – Measurement block diagram of delay profile Table 7 – Example of the parameter set of spectrum analyzer |
| 25 | Figure 10 – Reference model |
| 26 | 7 Methods of measurement for performances of signal quality improvement instrument used in radio wave relay station 7.1 General |
| 27 | 7.2 Classification of signal quality improvement instrument 7.3 Measurement diagram and measurement condition 7.4 Common measurement items Figure 11 – Conceptual diagram of relay station using a compensator Table 8 – Compensators used in digital terrestrial broadcasting relay network |
| 28 | 7.5 Methods of measurement for each kind of compensator Table 9 – Examples of measurement items for signal quality improvement instrument |
| 29 | Annex A (informative) Examples of measurement methods for signal delay Figure A.1 – General measurement system for cases 1 to 3 Table A.1 – Signal format and timing extraction of each case |
| 30 | Figure A.2 – Example of frame sync signal extracting part |
| 31 | Figure A.3 – Example of OFDM demodulator for frame timing extraction |
| 32 | Figure A.4 – Block diagram of direct measurement methods for time delay of OFDM signal Table A.2 – Equipment list for measurement |
| 33 | Figure A.5 – Example of frequency characteristics of combined signal Figure A.6 – Example of delay profile of combined signal |
| 34 | Figure A.7 – General measurement system for cases 5,6,13 and 14 Figure A.8 – Timing chart for signal delay measurement |
| 35 | Figure A.9 – Principle of measurement using 1 pps signal |
| 36 | Figure A.10 – General measurement system for cases 7, 8 and 15,16 |
| 37 | Figure A.11 – Measurement system for delay time (time reference is 1pps signal of GPS) Table A.3 – Equipment list for delay time measurement |
| 38 | Figure A.12 – Timing relation of each signals |
| 39 | Figure A.13 – Delay profile of OFDM signal |
| 40 | Annex B (informative) Examples of measurement methods for signal quality of relay stations Table B.1 – Definition of Null Packet (in case of ISDB-T) |
| 41 | Figure B.1 – BER measurement conceptual diagram for Null Packet method Figure B.2 – Examples of measurement result by Null Packet method |
| 42 | Figure B.3 – Method to compare the data before/after correction |
| 43 | Figure B.4 – Superimposed C/N measurement system |
| 44 | Table B.2 – Example of noise power measurement parameters (6 MHz ISDB-T) Table B.3 – Example of signal power measurement parameters (6 MHz ISDB-T) |
| 45 | Figure B.5 – Inherent degradation of OFDM demodulator measurement system |
| 46 | Figure B.6 – Calculation process of delay profile |
| 47 | Annex C (normative) Principle and methods of measurement of compensators |
| 48 | Figure C.1 – Example of measurement block diagram for performances of loop-back canceller |
| 50 | Figure C.2 – Example of measurement block diagram for performances of diversity reception equipment |
| 52 | Figure C.3 – Example of measurement block diagram for performances of co-channel interference canceller |
| 54 | Figure C.4 – Example of measurement block diagram for performances of C/N Reset equipment |
