环资询盘 求购DVB-T2 机顶盒 |
| 03-23 23:02:56 来源： 作者： |
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环资询盘 求购DVB-T2 机顶盒 转环资询盘 肯尼亚 客户 求购DVB-T2机顶盒 mkavuku@yahoo.com Tel: (254 722) 805241 Mr MAURICE KAVUKU OFFICE CONCEPT & TECHNICS LTD 要求如下： RF Tuner & DVB – T2 CHANNEL Complied Standard ETSI EN 302 755 V1.1.1 (2009 -09) Input impedance 75 ohms Modulation COFDM: QPSK, 16QAM, 64QAM, 256QAM Frequency VHF (174-230MHz), UHF (470-806MHz) Input signal level 36-85BuV FEC Coding LDPC code + BCH Code; Code Rate ½, 3/5, 2/3, ¾, 4/5, 5/6 Guard Intervals 1/128, 1/32, 1/16, 19/256, 1/8, 19/128, 1/4 FFT size 1K,2K,4K,8K,16K,32K C/N range (Rice channel) 3dB(QPSK ½) to 24 dB(256 5/6) Pilot Pattern PP1 to PP8 Channel raster 7MHz (VHF) 8MHz (UHF,1.7MHz VHF Signal Bandwidth 1.54,6.66,7.61 MHz(Normal mode) 1.57,6.8,7.77 (Extended mode) Service Specific robustness Physical Layer Pipes (PLP) Interleaving Bit+Cell+Time+Frequency Diversity SISI,MISO,(SIMO,MIMI if diversity receiver) Mode of Extension Future Extension Frame (FEF) Rotated Constellations Significant robustness gain in channels with severe degrations (multipath, SFN operation, narrow band interface Max Bit Rates (8MHz) 50.3 Mbit/s,32ke256QAM,CR 5/6,GI1/28,PP7 Used BIT Rates (8MHz) Portable SFN:25.0Mbit/s, Fixed SFN:37.0Mbit/s, Fixed MFN: 40.2 Mbit/s GE06 Compatible Signal is under the mask of DVB-T (power level measured in 4KHz bandwidth) MPEG Transmission Stream and Video and Audio Decoding Transmission stream MPEG-2 ISO/IEC 13818 Video Decoding MPEG-2/ MPEG 4 AVC (H.264),1920x1080 (High definition) Aspect Ratio (Image Rate) 4:3 ; 16:9 Frame Frequency 25Hz (PAL) Video Resolution 720x576 (PAL standard definition) Audio Decoding MPEG/MusiCam Layer 1 & 11 / HE AAC Audio Mode Single track / Dual Track / Stereo Audio Sampling Rate 32KHz, 44.1KHz, 48 KHz, 96 KHz Scanning Function The STB should include a frequency scanning functions to detect the availability of DVB-T signal. It should also automatically list the content of the terrenial bouquet by reading the PSI/SI streams and. Be capable of programme memory incase of power cut off. All STB should have an on screen visual signal level indicator for trouble shooting and reception directions. SOFTWARE EPG: Current and next programme information.24x7 days schedule Capable of identity control, watch rating by parental guidance Auto/Manual tuning 24 – Hr clock OTA: STB software ; EPG, CA features must be upgraded over the air,(USB Upgrade) Support receive mail Provide the instant and personalized message prompt Display and withdrawal of subtitles Support mult language info ADDITIONAL HARDWARE PVR TELETEX & TELEEX SUBTITLE It should e able to display teletex using the OSD and/or by the insertion of the teletex data in the VBI of analogue CVBS video output Its able to display teletex subtitling, meeting the requirements for level 1.5 in ref.(ETS 300 706, Enhanced Teletext Specification) INTERFACES RF input connector: IEC 169-2 female, input impendence 75 ohms One RCA (CICH) female connector for video output and two RCA (CINCH) female connector for stereo sound output. RF by pass (loop) IEC 169-2 male RF input via a PAL-G modulator SCART interface HDMI interface At least one RF cable to connect the unit associated analogue television receiver. INTERFACE FOR CONDITINAL ACCESS STB must have at least embedded Smart Card reader or DVB-CI (common Interface) slot to allow any type of conditional access module to be plugged in to set top box. PHYSICAL ATTRIBUTES Power supply AC 240:50Hz with an option of 12V DC input : Energy star option preferred ENVIRONMENTAL ATTRIBUTES Operating temp. 0-45 degrees Celsius Humidity: up to 90% RELIABILITY MTBF :80,000 Hrs DOCUMENTATIONS Use friendly documentations written in English |
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