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eLibrary > BS EN 60728-1:2014 Cable networks for television signals, sound signals and interactive services - System performance of forward paths >

BS EN 60728-1:2014 Cable networks for television signals, sound signals and interactive services - System performance of forward paths, 2014

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BS EN 60728-1:2014 Cable networks for television signals, sound signals and interactive services - System performance of forward paths, 2014

30303120-VOR.pdf [Go to Page]
CONTENTS
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviations [Go to Page]
3.1 Terms and definitions
3.2 Symbols
3.3 Abbreviations
4 Methods of measurement at system outlet [Go to Page]
4.1 Performance limits
4.2 Mutual isolation between system outlets [Go to Page]
4.2.1 Overview
4.2.2 Equipment required
4.2.3 Connection of the equipment
4.2.4 Measurement procedure
4.2.5 Presentation of the results
4.3 Amplitude response within a channel [Go to Page]
4.3.1 Overview
4.3.2 Equipment required
4.3.3 Connection of the equipment
4.3.4 Measurement procedure
4.3.5 Presentation of the results
4.4 Chrominance-luminance gain and delay inequalities [Go to Page]
4.4.1 Overview
4.4.2 Equipment required
4.4.3 Connection of the equipment
4.4.4 Measurement procedure
4.4.5 Presentation of the results
4.5 Non-linear distortion [Go to Page]
4.5.1 General
4.5.2 Intermodulation
4.5.3 Composite beat
4.5.4 Composite crossmodulation
4.5.5 Intermodulation noise
4.5.6 Hum modulation of carriers
4.5.7 Differential gain and phase
4.6 Carrier-to-noise ratio [Go to Page]
4.6.1 Overview
4.6.2 Equipment required
4.6.3 Connection of the equipment
4.6.4 Measurement set-up
4.6.5 Measurement procedure
4.6.6 Presentation of the results
4.7 Echoes [Go to Page]
4.7.1 Overview
4.7.2 Equipment required
4.7.3 Connection of the equipment
4.7.4 Measurement procedure
4.7.5 Presentation of the results
4.8 AM-VSB television, FM radio and FM television signal level [Go to Page]
4.8.1 General
4.8.2 Definitions for NTSC, PAL and SECAM systems
4.8.3 Equipment required
4.8.4 Measurement procedure
4.8.5 Presentation of the results
4.9 Data echo rating and data delay inequality
4.10 Interference in FM sound radio channels
4.11 Methods of measurement for digitally modulated signals [Go to Page]
4.11.1 Overview
4.11.2 Basic assumptions and measurement interfaces
4.11.3 Signal level for digitally modulated signals
4.11.4 RF signal-to-noise ratio SD,RF/N for digitally modulated signals
4.11.5 Bit error ratio (BER)
4.11.6 BER versus Eb/N0 or C/N
4.11.7 Noise margin
4.11.8 Modulation error ratio (MER)
4.11.9 Phase jitter
4.11.10 Phase noise of an RF carrier
5 Performance requirements at system outlet [Go to Page]
5.1 General
5.2 Impedance
5.3 Requirements at the terminal input [Go to Page]
5.3.1 General
5.3.2 Signal level
5.3.3 Other parameters
5.4 Carrier levels at system outlets [Go to Page]
5.4.1 Minimum and maximum carrier levels
5.4.2 Carrier level differences
5.5 Mutual isolation between system outlets [Go to Page]
5.5.1 Isolation between two subscribers
5.5.2 Isolation between individual outlets in one household
5.5.3 Isolation between forward and return path
5.6 Frequency response within a television channel at any system outlet [Go to Page]
5.6.1 Amplitude response
5.6.2 Group delay
5.7 Long-term frequency stability of distributed carrier signals at any system outlet
5.8 Random noise
5.9 Interference to television channels [Go to Page]
5.9.1 Single-frequency interference
5.9.2 Single-channel intermodulation interference
5.9.3 Multiple frequency intermodulation interference
5.9.4 Intermodulation noise
5.9.5 Cross-modulation
5.10 Video baseband requirements [Go to Page]
5.10.1 Differential gain and phase in any television channel
5.10.2 Echoes
5.11 Hum modulation of carriers in television channels
5.12 Requirements for data signal transmission [Go to Page]
5.12.1 Data signals carried in the structure of a television signal
5.12.2 Data signals other than those carried within the structure of a television signal
5.13 Digitally modulated signals – Additional performance requirements [Go to Page]
5.13.1 DVB (PSK, QAM, OFDM) performance
5.13.2 NICAM performance
5.13.3 DAB performance
5.14 FM sound radio – Additional performance requirements [Go to Page]
5.14.1 Amplitude response within an FM channel
5.14.2 Phase response within an FM channel
5.14.3 Interference within an FM channel
5.14.4 AM hum modulation on FM sound carriers
5.14.5 Echoes within an FM channel
6 Performance requirements at receiving antennas [Go to Page]
6.1 General
6.2 Method of measurement of field strength [Go to Page]
6.2.1 Overview
6.2.2 Equipment required
6.2.3 Connection of the equipment
6.2.4 Measurement procedure
6.2.5 Presentation of the results
6.3 Requirements [Go to Page]
6.3.1 General
6.3.2 Field strength requirements
6.3.3 Quality of received signals
6.3.4 Safety
6.3.5 Electromagnetic compatibility (EMC)
6.4 Interference reduction [Go to Page]
6.4.1 General
6.4.2 Active antennas
7 Performance requirements at home network interfaces of cable networks [Go to Page]
7.1 General
7.2 Requirements at HNI1 for passive coaxial home networks [Go to Page]
7.2.1 General
7.2.2 Carrier levels at the HNI1
7.2.3 Mutual isolation between two HNI1
7.2.4 Frequency response within any television channel at HNI1
7.2.5 Long-term frequency stability of distributed carrier signals at HNI1
7.2.6 Random noise at the HNI1
7.2.7 Interference to television channels at HNI1
7.2.8 Return path requirements at HNI1
7.3 Requirements at HNI2 for active coaxial home networks [Go to Page]
7.3.1 General
7.3.2 Carrier levels at the HNI2
7.3.3 Mutual isolation between two HNI2
7.3.4 Frequency response within any television channel at HNI2
7.3.5 Long-term frequency stability of distributed carrier signals at HNI2
7.3.6 Random noise at HNI2
7.3.7 Interference to television channels at the HNI2
7.3.8 Return path requirements at HNI2
7.4 Requirements at HNI3 and at system outlet or terminal input when the home network is mainly of balanced type [Go to Page]
7.4.1 Overview
7.4.2 Requirements at HNI3
7.4.3 Requirements at system output
7.4.4 Additional requirements at HNI3 for upstream transmission
7.5 Requirements at HNI3 (Case C)
7.6 Requirements at HNI3 (Case D)
Annex A (informative)Reception of television signals
Annex B (normative)Calibration of modulation depth [Go to Page]
B.1 Equipment required
B.2 Connection of the equipment
B.3 Calibration procedure
Annex C (normative)Equipment required –Additional items [Go to Page]
C.1 Measuring receiver preamplifier
C.2 Measuring receiver input filter
Annex D (normative)Preliminary checks on the measuring equipmentfor carrier-to-noise ratio [Go to Page]
D.1 Noise
D.2 Intermodulation
D.3 Overload
Annex E (normative)Correction factors [Go to Page]
E.1 Level correction factor Cm
E.2 Bandwidth correction factor Cb
Annex F (normative)Calibration of the measuring receiver
Annex G (normative)Correction factors for noise [Go to Page]
G.1 Signal level measurement
G.2 Noise level measurement
Annex H (normative)Null packet and PRBS definitions [Go to Page]
H.1 Null packet definition
H.2 PRBS definition
Annex I (normative)Digital signal level and bandwidth [Go to Page]
I.1 RF/IF power (carrier)
I.2 Bandwidth of a digital signal [Go to Page]
I.2.1 Occupied bandwidth
I.2.2 Noise bandwidth
I.2.3 Equivalent signal bandwidth
I.3 Examples
Annex J (normative)Correction factor for a spectrum analyser
Annex K (informative)Differences in some countries [Go to Page]
K.1 Subclause 3.1.58, Norway
K.2 Subclause 5.4.1, Japan, Netherlands [Go to Page]
K.2.1 Japan
K.2.2 Netherlands
K.3 Subclause 5.4.2, Japan
K.4 Subclause 5.5.1, Japan
K.5 Subclause 5.6.1, Japan
K.6 Subclause 5.6.2, Netherlands
K.7 Subclause 5.7, Japan
K.8 Subclause 5.8, Japan
K.9 Subclause 5.9.1, Japan, Netherlands [Go to Page]
K.9.1 Japan
K.9.2 Netherlands
K.10 Subclause 5.9.5, Japan
K.11 Subclause 5.10.2, Netherlands, Japan [Go to Page]
K.11.1 Netherlands
K.11.2 Japan
K.12 Subclause 5.11, Japan
K.13 Subclause 5.12.1, Denmark
K.14 Subclause 5.13.1.5, Japan
K.15 Subclause 5.14.3, Netherlands
K.16 Clause 7, Japan
Bibliography
Figures [Go to Page]
Figure 1 – Arrangement of test equipment for measurement of mutual isolation between system outlets
Figure 2 – Arrangement of test equipment for measurement of frequency response within a channel
Figure 3 – Interpretation of displays for measurement of frequency response within a channel
Figure 4 – Test signal (signal F for 625-line systems) employed for chrominance/luminance gain and delay inequality
Figure 5 – Test signal (signal B2 for 625-line systems) employed for chrominance/luminance gain and delay inequality
Figure 6 – Arrangement of test equipment for measurement of chrominance/luminance gain and delay inequality
Figure 7 – Displayed pulses: chrominance low and lagging
Figure 8 – Displayed pulses: chrominance high and leading
Figure 9 – Connection of test equipment for the measurement of non-linear distortion by composite beat
Figure 10 – Weighting curve for 625-line system B, G and D1 (PAL): CW interference with no special (frequency offset) control
Figure 11 – Weighting curve for 625-line system I (PAL): CW interference with no special (frequency offset) control
Figure 12 – Weighting curve for 625-line systems D and K (PAL): CW interference with no special (frequency offset) control
Figure 13 – Weighting curve for 625-line system L (SECAM): CW interference with no special (frequency offset) control
Figure 14 – Hum modulation envelope
Figure 15 – Calibrated potential divider
Figure 16 – Stable variable DC source
Figure 17 – Connection of equipment for measurement of hum modulation (DC method)
Figure 18 – Oscilloscope display
Figure 19 – Connection of equipment for hum modulation measurement (AC method)
Figure 20 – Signal D2
Figure 21 – Example of the modified staircase waveform
Figure 22 – Arrangement of test equipment for measurement of differential gain and phase
Figure 23 – Arrangement of test equipment for carrier-to-noise ratio measurement
Figure 24 – Echo rating graticule
Figure 25 – Arrangement of test equipment for measurement of echo rating
Figure 26 – PSK modulation (QPSK, BPSK or TC8PSK)
Figure 27 – DVB-S2 modulation (QPSK, 8PSK, 16APSK, 32APSK)
Figure 28 – DVB-C QAM modulation
Figure 29 – DVB-T OFDM modulation
Figure 30 – DVB-T2 OFDM modulation
Figure 31 – Reference receiver for PSK demodulation (QPSK, BPSK or TC8PSK)
Figure 32 – Reference receiver for DVB-S2 demodulation (QPSK, 8PSK, 16APSK, 32APSK)
Figure 33 – Reference receiver for QAM demodulation
Figure 34 – Reference receiver for DVB-T OFDM demodulation
Figure 35 – Reference receiver (buffer model) for DVB-T2 OFDM demodulation
Figure 36 – Test set-up for BER measurement
Figure 37 – Test set-up for BER measurement versus Eb/N0 or C/N and noise margin measurement
Figure 38 – Example of BER measurement versus Eb/N0
Figure 39 – Example of BER measurement versus C/N
Figure 40 – Test set-up for modulation error ratio (MER) measurement and phase jitter measurement
Figure 41 – Example of constellation diagram for a 64 QAM modulation format
Figure 42 – Example of constellation diagram for a 64 QAM modulation format with arc sections due to phase jitter
Figure 43 – Test set-up for phase noise measurement
Figure 44 – Example of mask for phase noise measurements: PSK, APSK and QAM formats
Figure 45 – Example of mask for phase noise measurements: OFDM format
Figure 46 – Home network types used to define the requirements at HNI1 (coaxial)
Figure A.1 – Example of a master antenna television system (MATV) for terrestrial reception
Figure A.2 – Example of the headend of a master antenna television system for satellite (SMATV) reception
Figure A.3 – Example of a master antenna television system for terrestrial and satellite (SMATV) reception
Figure A.4 – Example of a cabled distribution system for television and sound signals
Figure A.5 – System model for downstream direction of a cable network for television and sound signals (CATV)
Figure B.1 – Calibration of modulation depth
Figure G.1 – Noise correction factor CF versus measured level difference D
Figure K.1 – Mask group delay characteristic for PAL signalswith FM-FM sound (Netherlands)
Figure K.2 – Single-frequency interference (VSB-AM NTSC) (Japan)
Figure K.3 – Single-frequency interference (64 QAM digital) (Japan)
Figure K.4 – Single-frequency interference (256 QAM digital) (Japan)
Figure K.5 – Requirement for echo loss in relation to the time delay of the reflected signal (Netherlands)
Figure K.6 – Echoes (VSB-AM NTSC) (Japan)
Figure K.7 – Echoes (FM NTSC) (Japan)
Tables [Go to Page]
Table 1 – Application of the methods of measurement
Table 2 – Residual carrier reduction factors
Table 3 – Frequency distance fm
Table 4 – Carrier signal levels at any system outlet (analogue signals)
Table 5 – RF signal levels at any system outlet (digital signals)
Table 6 – Maximum level differences at any system outlet between distributed television channels
Table 7 – Mutual isolation
Table 8 – Residual carrier level at television or FM radio output within the same outlet or between two different outlets
Table 9 – Amplitude response variation
Table 10 – Group delay variation
Table 11 – Maximum deviation of the conversion frequency for digitally modulated DVB signals
Table 12 – Carrier-to-noise ratios at system outlet (analogue television)
Table 13 – RF signal-to noise ratio at system outlet (digital television)
Table 14 – Carrier-to-noise ratios at the system outlet (sound radio)
Table 15 – Differential gain and phase in television channels
Table 16 – Modulation error ratio MER of DVB signals
Table 17 – Phase jitter of a DVB signal
Table 18 – Phase noise of a DVB signal (PSK, APSK and QAM)
Table 19 – Phase noise of a DVB-T signal (COFDM)
Table 20 – Minimum field strength levels recommended by ITU-R
Table 21 – Minimum field strength levels recommended by CEPT:1997
Table 22 – Minimum signal level at the headend input for the reception of analogue sound broadcasting
Table 23 – Minimum signal level at the headend input for the reception of analogue television broadcasting
Table 24 – Minimum signal level at the headend input for the reception of DAB signals at an error ratio of 1 ( 10−4 and code rate 1/2
Table 25 – Minimum signal level and RF signal-to-noise ratio at the headend input for stationary reception of DVB-T signals
Table 26 – Minimum signal-to-noise ratio SD,RF/N at the headend input for DVB-T2 signals (LDPC block length 64 800 bit)
Table 27 – Minimum signal level and carrier-to-noise ratio at the headend input for the reception of FM modulated satellite signals
Table 28 – Minimum RF signal-to-noise ratio at the headend input for the reception of DVB-S or DVB-S2 satellite signals (AWGN channel and FECFRAME length of 64 800)
Table 29 – Minimum values for signal-to-disturbance ratio
Table 30 – Minimum values for signal-to-echo ratio
Table 31 – Signal level at HNI1 (analogue signals)
Table 32 – Signal level at HNI1 (digital signals)
Table 33 – Maximum level differences at HNI1
Table 34 – Mutual isolation between two HNI1
Table 35 – Amplitude response variation at HNI1
Table 36 – Group delay variation at HNI1
Table 37 – Signal level at HNI2 (analogue signals)
Table 38 – Signal level at HNI2 (digital signals)
Table 39 – Maximum level differences at HNI2
Table 40 – Amplitude response variation at HNI2
Table 41 – Group delay variation at HNI2
Table 42 – Carrier-to-noise ratios at HNI2 (analogue television)
Table 43 – RF signal-to-noise ratios at HNI2 (digital television)
Table 44 – Carrier-to-noise ratios at HNI2 (sound radio)
Table 45 – Minimum signal level at coaxial terminal input (case A) or at coaxial system outlet (case B)
Table G.1 – Noise correction factor
Table H.1 – Null transport stream packet definition
Table I.1 – Examples of bandwidths for digital modulation techniques
Table K.1 – Carrier signal levels at any system outlet (Japan)
Table K.2 – Carrier signal levels at any system outlet (Netherlans)
Table K.3 – Maximum level differences at any system outlet between distributed television channels (Japan)
Table K.4 – Mutual isolation (Japan)
Table K.5 – Amplitude response variation (Japan)
Table K.6 – Frequency stability requirements (Japan)
Table K.7 – Carrier-to-noise ratios at system outlet (Japan)
Table K.8 – Single-frequency interference (Japan)
Table K.9 – Single-frequency interference (Netherlands)
Table K.10 – Cross-modulation (Japan)
Table K.11 – Echoes requirements (Japan)
Table K.12 – Hum modulation of carriers in television channels (Japan)
Table K.13 – Phase noise of an RF carrier (Japan) [Go to Page]

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