EN55032测试中的音频和视频接口信号要求

Table B.4 – Examples of digital broadcast signal  specifications

 

General DVB ISDB ATSC DMB-T
Standard TR 101154 - ATSC Standard A/65 System-A(DAB/Eureka-147)
Source coding MPEG-2 video MPEG-2 audio MPEG-2 video MPEG-2 audio MPEG-2 video AC-3 audio H.264/MPEG-4 AVC
Data coding Optional Optional Optional Optional
Video elementary stream Colour bar, with small moving element Colour bar, with small moving element Colour bar, with small moving element Colour bar, with small moving element
Video bit rate 6 MBit/s 6 MBit/s 6 MBit/s (1 ~ 11) Mbit/s
Audio elementary stream forreference

measurement

1 kHz/full range –6  dB 1 kHz/full range –6  dB 1 kHz/full range –6  dB 1 kHz/full range –6  dB
Audio elementary stream for noise measurement 1 kHz/silence 1 kHz/silence 1 kHz/silence 1 kHz/silence
Audio bit rate 192 kbit/s 192 kbit/s 192 kbit/s 192 kbit/s
Terrestrial TV DVB-T ISDB-T ATSC DMB-T
Standard EN 300 744 ARIB STD-B21ARIB STD-B31 ATSC 8VSB System-A(DAB/Eureka-147)
Level 50 dB(mV)/75 W-VHF B III54 dB(mV)/75 W-UHF B IV/V 34 dB(mV) to89 dB(mV)/75 W 54 dB(mV)(using ATSC 64) 18 dB(mV) ~ 97  dB(mV)
Channel 6 to 69 - 2 to 69 -
Frequency - 470 MHz to 770  MHz,5,7 MHz bandwidth 174 MHz ~ 216  MHz
Modulation OFDM OFDM 8 VSB or 16  VSB DQPSK, Transmission: OFDM
Mode 2 k or 8  k 8k, 4k, 2k - -
Modulation scheme 16 or 64 QAM or QPSK QPSK, DQPSK, 16 QAM,64 QAM - -
Guard interval 1/4, 1/8, 1/16, 1/32 1/4, 1/8, 1/16, 1/32 - -
Code rate 1/2, 2/3, 3/4, 5/6,  7/8 1/2, 2/3, 3/4, 5/6,  7/8 2/3 -
Useful bit rate Variable MBits - 19,39 MBit/s -
Information bit rate: max 31,668 MBit/s 23,234 MBit/s - -
Satellite TV DVB-S DVB-S(Communication satellite) ISDB-S(Broadcasting satellite) None
Specification EN 300 421 ARIB STD-B1 ARIB STD-B20ARIB STD-B21 -
Level 60 dB(mV)/75 W 48 dB(mV) to81 dBmV/75 W 48 dB(mV) to81 dB(mV)/75 W -
Frequency 0,95 GHz to 2,15  GHz 12,2 GHz to 12,75  GHz 11,7 GHz to 12,2  GHz -
Frequency 1st  IF - 1 000 MHz to1 550 MHz, 27  MHz

bandwidth

1 032 MHz to 1 489  MHz,34,5 MHz bandwidth -
- 12,5 GHz to 12,75  GHz 11,7 GHz to 12,2  GHz -
Modulation QPSK QPSK TC8PSK, QPSK, BPSK -
Code Rate 3/4 1/2, 2/3, 3/4, 5/6,  7/8 2/3(TC8PSK), 1/2, 2/3,3/4, 5/6, 7/8(QPSK, -

 


 

General DVB ISDB ATSC DMB-T
BPSK)
Useful bit rate 38,015 MBit/s 29,2 MBits/s (r =  3/4) - -
Information bit rate - 19,4 MBit/s to 34,0 MBit/s - -
Information bit rate: max - 34,0 MBit/s 52,17 MBit/s -
Cable TV DVB-C ISDB-C ATSC -
Specification EN 300 429 JCTEA STD-002 ANSI/SCTE 07 -
ES 201 488 JCTEA STD-007
ES 202 488-1
EN 302 878 (DOCSIS)
Level 67  dBmV  at  75  W  for 49 dB(mV) to 60 dB(mV)/75 W -
256 QAM 81 dB(mV)/75 W
60 dBmV at 75 W for 64 QAM (64 QAM)TDB (256 QAM)
Frequency 110 MHz to 862  MHz 90 MHz to 770  MHz,6 MHz bandwidth 88 MHz to 860  MHz -
Modulation 16/32/64/128/256 QAM 64 QAM or 256  QAM 64 QAM or 256  QAM -
Useful bit rate 38,44 MBit/s (64 QAM) - 26,970 MBit/s (64  QAM), -
and 51,25 MBit/s 38,810 MBit/s (256  QAM)
(256 QAM) at
6,952 Mbaud (8 MHz
channel)
Transmission bit 41,71 MBit/s (64 QAM) 31,644 MBit/s (64 - -
rate 55,62 MBit/s(256 QAM) at

6,952 Mbaud (8 MHz

QAM)42,192 MBit/s (256 QAM)
channel)
Information bit 51,25 MBit/s 29,162 MBits/s - -
rate (256 QAM) at 38,883 MBits/s (256
6,952 Mbaud (8 MHz QAM)
channel)
Return path - - 5 MHz to 40 MHz,  QPSK -