Related knowledge:

Supply DVB-T/T2 high definition set-top boxes, exported to Europe, Kenya, Angola,
Russia in Europe and Central Asia Thailand Malaysia, Singapore,

HD DVB-T2 digitalterrestrial receive
. Features:
1: support USB2.0 media playback and recording capabilities, supports the hard disk format: NTSC, FAT32 and FAT16, supports multiple partitions.
2:USB file function can operate on all the files in the USB storage device, including picture files, video files, audio files, you can copy and delete, format the hard disk
3: support for electronic program guide EPG function:
4: supports TELETEXT (graphic)
5: support the LCN function (logical channel number)
6: support OSD Subtilte (menu screen character)
7: timed shutdown function/regular boot features a recording
8: multi language menu function
9: support PAL/NTSC format conversion.
10: support for 1920x1080P,1920x1080i and 1280x720p,720x576p,720x576i output formats
11: video output support: HDMI1.3,SCART, YPbPr, CVBS (different models differ)
12: remote control switch machine
13: support for loop function (RF LOOP-loop)
14: video formats supported: 16:9/4:3
15: support OTA functionality (over the air technology, depending on the models differ, Android, others may not)
二，解码：
1:CPU speed: MIPS34/550MHz
2: support for video decoding: MPEG1,2MP@HL and a maximum of 1080p@30fps
MPEG-4 SP&ASP@L5HD decoding up to 1080p@30fps
Divx13.114.x6.x, Home Theater& HDprofile
FLV video format
H.264 MP@ HP4.1, up to 1080p@ 30fps
VC-1 Decoder, MP@ HL and AP@L3 up to 1080p@30fps
RM&RMVB, the RV8 RV9 and RV10, Max 720p@30fps
Format above need to LICENCE the LICENCE is necessary to open. (Authorized paying)
1: support audio decoding: MPEG-1,MPEG-2,MP3,WMA,AAC-LC, HE-AAC5.1,AC-3,E-AC-3,RA8-LBR
2: video file formats are supported: MPEG1,MPEG2,MPEG4,MPEG4,H.264, MOTION JPEG
(.avi, .mpg, .dat, .vob, .mov, .mkv,.rmvb, .wmv, .flv, .ts)
3: supported audio file formats: WMA, MP3,WAV, AAC, and OGG (. WMA,. MP3,. m4a,.wav,. AAC and. ogg)
4: picture file formats are supported: JPEG,BMP, PNG
三，外围接口：
1． Audio coaxial output (some models do not have this feature)
2. HDMI1.3 output
3. USB, USB2.0 specification, external USB hard drive
4. LED light status indicator
5. Antenna input and loop output
6. SCART output (individual models are generally European)
7. Stereo audio output (optional)
8. Composite video output, and YPbPr output
9. DC5V power input
four, system characteristics:
1. Antenna input
frequency: 47-868MHZ
input impedance: 75 Omega
demodulation: QPSK, 16QAM, 64QAM
input sensitivity: -80db ± 1dB (64QAM,7/8, 8k, 1/32)
1 power supply input: DC:5V/2A 0.2V
2: power consumption: HD broadcast less than 10W
3: standby: less than 0.5W
five. DVB-T2 key features:
1. increase of at least 30% channel capacity than DVB-t, but also improves the performance of single frequency network;
2. robustness of business-oriented transport;
3. applicable to mobile and stationary receivers for program transmission;
4. extensibility and reuse the original DVB-t infrastructure;
5. peak to average power ratio reduction, thereby reducing the transmitter's operating costs.

VI. DVB-T2 performance enhancements:
1. increase the IFFT mode OFDM modulation;
2. effective error correction via LDPC coding;
3. integrates concepts from DVB-S2 baseband frames;
4. Q signal delay rotated constellations;
5. MISO transmission;
6. reducing shoulder coefficient
b. Here are the basics of DVB-t?
(1) can receive DVB-t digital TV channel? What can receive?
DVB-t digital TV can receive how many depends on how many local TV drive DVB-t TV channels. In Guangzhou to receive 7, for example, in Shenzhen to receive 3. Please note that DVB-t television shows with family TV show is not the same. So your family can receive dozens of programs, and DVB-t digital TV will only have a few, it's not TV box receiver problem, too little was opened at your local DVB-t channels. Also, receive television content depends on TV, DVB-t TV in most cities are mainly traffic, travel, entertainment, news and other programs. Guangzhou has a dedicated mobile TV channels: channels of the city, Guangdong Mobile, move of the Pearl River, Guangzhou mobile.
(2) DVB-t digital TV needs to pay it?
DVB-t digital TV does not need to pay! Now launching DVB-t TV program is the public channel, primarily traffic information, news. TV station's revenue still comes from advertising, rather than charge the television fee. You need to spend just to purchase DVB-t digital TV receiver box fee.
(3) I purchased a DVB-t digital TV box but can't get, and why?
Not received, there are several possibilities: first, your location may not be launching DVB-t TV channel or, if you're launching mobile TV channel but using the DVB-t system, so TV box the TV up, so before you buy make sure opening of the conditions on the ground. Second, a signal problem. You may then place obstructions. Drove to another location and then test, test a few more times. DVB-t TV signal transmission area restrictions, more than the dissemination of regional information failure, you may not receive.
(4) how mobile TV reception:
Mobile TV used today world most advanced of digital TV technology, thus than past of simulation TV, digital TV image stable, color realistic, picture clear, not exists due to more diameter reflection and caused of heavy shadow, and signal weak caused of picture distortion, while receives sensitivity high, anti-interference capacity strong. due to used wireless receives, program content of timeliness and other play equipment compared to has obviously of advantage.
(5) questions about pay per view encrypted channels:
An encrypted channel is television broadcast encryption Scrambling program, TV subscribers by means of dedicated decoder decrypts, charging user fees is the business model, digital mobile TV watching encrypted CA and are divided into ranks of FTA. Now there are parts of some ground wireless digital broadcast signals for encryption charges, users need to use a dedicated and decrypt the decryption receiver card, expensive, and pay monthly subscriptions, since encryption system, encryption receive can only receive encrypted programmes. Because above all factors, digital mobile TV of promotion single by paid TV of way is no of, so currently most channel of program are is free of, including Beijing, Shanghai, sent had city are is used free channel advertising profit this mode, to more high of ratings, operating commercial must will broadcast more better of TV, future also must is paid channel and public channel of coexist of situation.
(6) section highlights
Multiple column featuring news, sports, music, avant garde stories set in one, brand new build a set time, entertaining, informative, interesting in one column, let the audience at the first time master the latest and greatest news, sports, music, movies and other aspects of the message. While broadcast TV program at the Central, provincial and municipal levels in some regions.
Note: launch mobile TV program number as local television and broadcast programs, and different channels vary 2-28 (set) along with the proliferation of mobile digital television and a wide range of applications, programmes will be gradually increased.
三． Opened by the standards of the DVB-t:
1. start DVB-t countries
Albania, Andorra, Australia, Belgium, Croatia, Czech Republic, Faroe Islands, Finland, France, Germany, Greece, Italy, and made pottery Bowl, Malta, Mauritius, Namibia, Netherlands, Russian Federation, Singapore, Spain, Sweden, Switzerland, United Kingdom.
2． About to launch DVB-t countries
Austria, Denmark, Norway
3. Formal adoption of DVB-t countries
Bosnia and Herzegovina, Brunei, Bulgaria, Burma, Cyprus, Hungary, Iceland, India, Iran, Ireland, Latvia, Luxembourg, Macedonia, Malaysia, New Zealand, Poland, Portugal, Romania, Serbia and Montenegro, Slovakia, Slovenia, Sri Lanka, Turkey and Viet Nam.
4． Ongoing trials of DVB-t broadcasting State of
Azerbaijan, Belarus, China, Estonia, Israel, Moldova, South Africa, and Thailand.
5． Commercial pilot countries
Argentina
6.RRC 06-the future of DVB-t in participating countries
Algeria, Angola, Armenia, Azerbaijan, Bahrain Islands, Botswana, Burkina Faso, Burundi, Cameroon, Cape Verde, Central African Republic, Chad, Comoros, Republic of the Congo, Ivory Coast, Democratic Republic of the Congo, Djibouti, Egypt, The Republic of Gabon, Gambia, Ghana, Jordan, Kazakhstan, Kenya, Kuwait, Kyrgyz Republic, Lebanon, Lesotho, Libya, Liechtenstein, Madagascar, Malawi, Mali, Morocco, Mozambique, Namibia, Nigeria, Oman, Qatar, Rwanda, San Marino, Saudi Arabia, Senegal, Somalia, Sudan, Swaziland, Syria, Tanzania, Togo, Tunisia, Turkey, Ukraine, United Arab Emirates, Uzbekistan, Yemen, Zambia, Zimbabwe.
7. adopting DVB-T2 standards of southern Africa
Angola, Botswana, Democratic Republic of the Congo, Lesotho, Madagascar, Malawi, Mauritius, Mozambique, Namibia, Seychelles, South Africa, Swaziland, Tanzania, Zambia and Zimbabwe Republic, in addition to Europe, Australia, and India, and Kenya, and Malaysia, and Singapore, and Colombia, Sri Lanka and Thailand and other countries are also considering DVB-T2 standards.