WY588304多制式數(shù)字電視信號(hào)發(fā)生器是與國(guó)外廠商合作,采用進(jìn)口DTV信號(hào)源,能夠非常便利的發(fā)射各種標(biāo)準(zhǔn)的數(shù)字電視信號(hào),它集碼流播放器和RF調(diào)制器于一體,廣泛適用于數(shù)字電視產(chǎn)品研發(fā)、品質(zhì)的測(cè)試,生產(chǎn)調(diào)試以及學(xué)校教學(xué)實(shí)驗(yàn)的使用,6.4英時(shí)的TFT LCD彩屏配合接觸屏控制,使本機(jī)操作更方便、更省時(shí)。
1 支持?jǐn)?shù)字電視標(biāo)準(zhǔn)范圍:
1.2 美國(guó):ATSC-T(8VSB),J.83AnnexB QAM,。
1.3 日本:ISDB-T,J.83AnnexC。
1.4 中國(guó):DTMB(GB20600-2006).
1.5 韓國(guó):T-DMB。
2 主要特點(diǎn)
2.1 使用方便,碼流播放器和RF調(diào)制器一體,支持MPEG-2的高清碼流和標(biāo)清碼流。
RF頻率范圍 | VHF/UHF:55MHz~867MHz,L-BAND:956MHz~2036MHz | |
RF輸出 | 連接頭 | BNC型,75Ω |
輸出電平 | VHF/UFF:0dBm*大,0.1dB 可調(diào)節(jié) | |
L-BAND:-25dBm*大,0.1dB可調(diào)節(jié) | ||
相位噪音 | <-90dBc@10kHz | |
帶外抑制 | >60dB(47~862MHz) | |
IF輸出 | 連接頭 | BNC型,75Ω |
頻率范圍 | 36MHz~44MHz | |
DVB-ASI/SMPTE-310M輸出, 碼流輸出 | 連接頭 | BNC,75Ω |
碼率 | *高90Mbits/s | |
操作平臺(tái) | Windows XP.2000 WDM and Linux 應(yīng)用軟件 PCI Bus:依照PCI Version 2.1 | |
顯示方式 | 6.4英時(shí),彩色LCD屏,640×480接觸屏控制 |
5 系統(tǒng)方塊圖
6 選擇調(diào)制器模塊的主要規(guī)格:
6.1 DVB-T/H調(diào)制器規(guī)格
Standard ETSI EN300744 V1-4-1 compliant Non-hierarchical single program mode Punctured Code Rate 1/2,2/3,3/4,5/6,7/8 selectable Constellation QPSK,16-QAM,64-QAM | Transmission Mode 2K/4K/8K mode selectable 4K mode only for DVB-H Guard Interval 1/4,1/8,1/16,1/32 selectable | In-Depth Interleaving Only for DVB-H Bandwidth 5/6/7/8 MHZ mode selectable 5 MHz only for DVB-H |
6.2 ATSC 8VSB調(diào)制器規(guī)格
Standard ATSC A.53, 8VSB compliant |
6.3QAM 調(diào)制器規(guī)格
Standard ITU-T j.83 Annex A/C and B compatible | Constellations Annex A/C:16-QAM,32-QAM, 64-QAM,128-QAM,256-QAM, | Annex B: 64-QAM,256-QAM |
6.4 DVB-S 調(diào)制器規(guī)格(選購(gòu)件)
Standard ETSI EN 300421(DVB-S)compliant | Code Rates 1/2,2/3,3/4,5/6,7/8 | Symbol Rates 1~45M symbols/s |
6.5 DVB-S2 調(diào)制器規(guī)格(選購(gòu)件)
Standard ETS 302 307 compliant LDPC Code 1/4,1/3,2/5,1/2,3/5,2/3,3/4,4/5, 5/6,8/9,and 9/10 supports | Modulation Mode OPSK,8PSK,16APSK,32APSK Roll-off 0.20,0.25,0.35,None Selectable 2~35Msps w/o shaping filter 2~22Msps w/ shaping filter | Symbol Rates 2~35M symbols/s |
6.6 T-DMB調(diào)制器規(guī)格(選購(gòu)件)
Standard ETS 300401,ETS300799 compliant | Transmission Modes DAB transmission modes I,II,III,IV Transmission mode Automatically selected from The ETI stream | Supports ETI(NI)and ETI(NA)rile format |
6.7 ISDB-T 調(diào)制器規(guī)格(選購(gòu)件)
Standard ARIB STD-B31 v1.6 compliant Mode Mode I, Mode II, Mode III Code Rates 1/2, 2/3,3/4,5/6,7/8 selectable Mapping DQPSK, QPSK, 16QAM, 64QAM | Guard Interval 1/4,1/8,1/16,1/32 Timing Interleaving Length Mode I-0,4,8,16 Mode II-0,2,4,8 Mode III-0,1,2,4 | The Number of Segments 1/13 Segment Support TMCC Information and Generation(ISDB-T information and IIP) *ISDB-T modulation from DVB-ASI input is not supported |
6.8 DTMB調(diào)制器規(guī)格(選購(gòu)件)
Standard GB20600-2006 compliant Number of Carriers 1 or 3780 sub-carriers selectable Frame Length 4200,4335,4725 symbols | Constellations 4QAM-NR, 4QAM. 16QAM, 32QAM, 64QAM Code Rates 0.4,0.6,0.8 | Time Interleaving 240,720 symbols Bandwidth 8MHz |
| WY588301 | WY588302 | WY588303 | WY588304 |
DVB‐T/H | ● | ● | ● | ● |
ATSC 8VSB | ● | ● | ● | ● |
QAM J.83 Annex A/C | ● | ● | ● | ● |
QAM J.83 Annex B | ● | ● | ● | ● |
DVB‐S/S2 | ‐‐‐‐‐ | ● | ● | ● |
ISDB‐T | ‐‐‐‐‐ | | ● | ● |
ISDB‐S | ‐‐‐‐‐ | ‐‐‐‐‐ | ‐‐‐‐‐ | ● |
DTMB | ‐‐‐‐‐ | ● | ● | ● |
CMMB | ‐‐‐‐‐ | ‐‐‐‐‐ | ‐‐‐‐‐ | ● |
ATSC‐M/H | ‐‐‐‐‐ | ‐‐‐‐‐ | ‐‐‐‐‐ | ● |
DVB‐T2 | ‐‐‐‐‐ | ‐‐‐‐‐ | ‐‐‐‐‐ | ● |
T‐DMB | ‐‐‐‐‐ | ‐‐‐‐‐ | ‐‐‐‐‐ | ● |
TS INPUT | ● | ● | ● | ● |
DVB‐ASI OUTPUT | ● | ● | ● | ● |
IF OUTPUT | ● | ● | ● | ● |
8.4 環(huán)境要求:室內(nèi)工作,工作溫度15℃~35℃,相對(duì)濕度20%~80%。
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