JXDH-6302 QAM Modulator User Manual
Contents
1. press the up down button will change the number while move cursor by pressing left right button to select the item which need to be reset the frequency range 35 000 44 000MHz adjustable it display as below after amp Set IF setting press Enter for save 36000 36000KHz 12 19 3 1 7 RF Output Frequency Setting Press Enter to RF Output Frequency Setting press up down button will change the number while move cursor by pressing left right button to select the item which need to be reset the frequency range 110MHz 862Mh2z it display as below after reset press Enter for save ie Set RF Frequency 470000 470000KHz 3 1 8 RF Output level Press Enter to RF Output Level press up down button to change the number the adjustable range is 0 20dB stepping at 0 20dB it displays as below press Enter after reset for save amp RF Level ATT 00 0 00 0dB 3 1 9 IP Address Setting Press Enter to IP Address Setting change the number by press up down button move cursor by pressing left right button to select the item to be reset it display as bellows press Enter after reset for save Note the beginning 9 digits of QAM IP address and of the server are the same the ending 3 digits are different amp Set IP Address 192 168 100 001 3 1 10 Subnet Mask Press Enter to Subnet Mask change the number by press up down buiton move cursor by pr2. After boot it the LCD displays as below IN QAM RF 470 000MHz SR 6875K S 64QAM Here pressing RIGHT button the screen displays as below Avai Rate 00 000Mbps In Rate 00 000Mbps It is for inspect the input code rate timely press Menu for quit 3 1 2 Main menu setting Click on Menu enter main menu select the item by the DOWN button press Enter the sketch as below gt Set Input port Select Language QAM Mode Factory Setting Set Symbol Rate View serial number Set IF About QAM System Set RF Frequency RF Level ATT Set IP address Set Subnet mask 11 19 3 1 3 Input interface setting Moving the cursor to input interface setting press Enter select the items by LEFT RIGHT button it displays as below press Enter after confirm selection for Save Set Input Port ASI SPI 3 1 4 QAM mode setting Press Enter to QAM mode setting select the item which you need by pressing UP DOWN button it display as below press Enter after confirm selection for save QAM Mode 64 son 3 1 5 Symbol rate setting Press Enter to Symbol Rate Setting press the up down button will change the number while move cursor by pressing left right button to select the item which need to be reset it display as below after setting press Enter for save Set SR 38 014Mbps 6875 6875 K S 3 1 6 IF Frequency Press Enter to IF Frequency
3. 88 standard 8 19 2 12 Dimension 44 5mm height 1U x483mm width 19 x300mm deep 2 13 Weight 3 5 kg 2 14 Figure and description Front panel sketch INMOD 6302QAM Modulator A Digital Power O amp Enter Menu Video i lt OSOD O Broadcasting la V DE 1 LCD screen display 2 Power supply indicator Fault alarm indicator UP DOWN LEFT RIGHT button Confirm Button aaa cae cola ad Menu Cancel button Rear panel sketch Ethernet L a REOUT act AC110V 220V 50 60Hz OUT IN 2 14 1 SPI input interface 9 19 Signal eae Signal ae No description No description name name 1 CLK A Signal clock 14 CLK B Signal clock 2 GND grounding 15 GND Grounding 3 D7 A Data 7th 16 D7 B Data 7th 4 D6 A 6 17 D6 B 6 5 D5 A 5 18 D5 B 5 6 D4 A 4 19 D4 B 4 7 D3 A Ce 20 D3 B an 8 D2 A ae 21 D2 B an 9 D1 A is 22 D1 B 1 10 DO A 0 23 DO B 0 11 DVALID A Data valid 24 DVALID B Data valid Packet 12 PSYNC A 25 PSYNC B Packet synchro synchro 13 Cable st wane shielding line 10 19 Charter 3 Operation QAM modulator front panel is for user operate before normal operation you can keep the default setting witch is the factory setting and you can setting for input output parameter operation Input setting including selecting input interface setting output parameter 3 1 Setting operation 3 1 1 Boot interface
4. be connect with other MPEG 2 DVB devices which also have ASI output interface by 750 coaxial cable that is to say when connect 1 device s ASI output connect to another one s ASI input interface ASI input interface adopt BNC connector as below picture 18 19
5. composing a integrity digital TV system The network for transmission digital system can be satellite CATV territory transmitting and ADSL In addition The user end feedback the user s interactive information to the digital TV head end system via the return path the return path can be composed of network as HFC route Wireless Return Path PSIN ISDN User end is what we called set top box STB User receive digital TV business information via STB and shows them on the end equipments Digital head end system can be divided to signal source processing information processing and transmission processing three parts For example various head programs encoding equipments be part of signal source processing program multiplex scrambling etc be part of information processing QAM modulator missed signals be part of transmission processing It can be divided to user administer system CA subsystem DVB C front end equipment subsystem store and edit digital programs subsystem digital broadcasting and middle subsystem etc as following chart Signal sources Signal processing Transmission process aS QAM Modulator local program Other program sources Program database User admi sym _f Return signal Call center User request ontent 2 19 Terminology CA Condition Access DVB C Digital Video Broadcasting Cable MMDS Multichannel Microwave Distribution System DSL Digital Subscriber Line HFC High Fr
6. female Packet format 188 or 204 byte no route encode Standard compatible of DVB LVDS working methods 2 5 IF Interface A IF output Linker BNC socket Impedance 75Q Center frequency 35 000 44 000MHz adjustable stepping 125KHz IF bandwidth lt 8MHz Return loss 218dB Input level 100dBuV 2 6 RF Interface A RF output Connector F jack the metric system Impedance 750 Output frequency 110MHz 862MHz provide per model Return loss 212dB Output level Max 115dBuV adjustable stepping at 0 5dB Level adjustable range 0 20dB Carrier suppression gt 55dB Modulate error rate MER 232dB closing balance 245dB opening balance Bit modulate error rate BER 1 10 8 SNR Outside band 250dB 7 19 B RF test output Connector BNC Impedance 750 Output level 75dBuV 95dBuV adjustable 2 7 Signal channel coding Modulate mode 16QAM 32QAM 64QAM 128QAM 256QAM Channel coding comply with DVB standard RS coding IF modulate error rate MER 244dB SNR outside band 250dB 2 8 Network administration interface Ethernet interface Ethernet IEEE802 3 RJ45interface Software agreement the SNMP agreement 2 9 power supply Voltage 100 240VAC Frequency 50Hz 2 Electric Power 20W 2 10 Working environment Surrounding temperature 5 C 45 C Storage temperature 25 C 55 C Relative humidity 10 75 2 11 Radiate and safety requirements Comply with GB13837 92 and GB8898
7. e range 2 56Mbps Output signal Bandwidth BW range 1 15 8 05MHz roll down coefficient is 0 15 Output data symbol rate range 1 7Mbaud s 5 19 RF frequency range 110 862MHz Output level range 95dBuV 115dBuV stepping 0 5dB step adjustable 188 204 packet length adaptable itself Adopt big enough cache design ASI interface support paroxysmal and symmetrical input TS stream and can equilibrate and reforming the TS stream enhance the efficiency of output TS stream Input data empty packet filtering and output data fill in PRC proofread function can accurately correct several PCR of input data separately Real time inspect and display for the efficient TS stream Adaptable itself to filtering circuit design to ensure the excellent suppress capability out of band 20dB RF test mouth to monitor IF output Fault alarm display LCD screen display Network control interface make centralize management remote upgrade and maintenance network management software only for option Power off memory 2 4 Data Interface 2 4 1 ASI interface Asynchronous Serial Interface A Input Socket BNC Impedance 750 Packet format 188 or 204 byte no route encode Route data speed velocity 270Mbps Max efficient data 51 6Mbps Standard meet DVB standard support paroxysmal and symmetrical input TS stream B Ring route output 6 19 Socket BNC Impedance 750 2 4 2 SPI Input Interface Synchronous Parallel Interface Socket DB 25
8. equency Current PSTN Public Switched Telephone Network ISDN Integrated Services Digital Network DVS Digital Video System DTX Digital TV Exchange platform QAM Quadrature Amplitude Modulation STB Set Top Box EPG Electronic Program Guide MPEG Moving Picture Express Group DVB Digital Video Broadcasting PSI Program Specific Information Sl Service Information ASI Asynchronous Serial Interface 3 19 Charter 2 Product Summarize 2 1 Summarize In the broadcasting process of digital TV programs QAM modulator mainly complete QAM modulate and up frequency conversation process for TS stream Apply to multi level transmission broadcasting of digital TV business QAM modulator mainly used in head end of digital TV broadcasting it is composed by two modules QAM modulator and digital up frequency conversation modulate the input serial or parallel TS stream via the QAM modulator module modulate to IF frequency then pass the up frequency conversation module to frequency transform into standard channel or supplement channel which meet demand Finally mixed enter into CATV network and received by the terminal STB 2 2 System components and working principle 2 2 1 System components QAM Modulator components as below IF output SPI 35 25 36 36 15 44M ASI pp QAM IF RE x RF output DS3 Proc ss process modyilate 48 860MHz E3 CPU C E Loo Network Control I
9. ess the left right button to select the item to be reset it display as 13 19 bellows press Enter after reset for save Note the subnet mask of QAM and server are the same gt Set Subnet mask 255 255 255 000 3 1 11 Language Press Enter to Language move cursor by pressing left right button to choose the needed language it display as below press Enter after reset for save amp Select Language HX English 3 1 12 Restore Factory Setting Press Enter to Restore Factory Setting move cursor by press left right button to choose confirm cancel it display as below press Enter after select for save amp Resume to default Confirm Exit 3 1 13 Product No and About QAM Modulator Press Enter to Product Serial No it displays its serial number from the factory Press Enter to About QAM Modulator it displays the product s type and company s website View Serial Number About QAM System 14 19 Charter 4 Installation Guide 4 1 Inspection upon Reception Open the package inspect the article inspect the package for small parts without fail check the articles according to the packing list or below items e QAM Modulator e User Manual e Q9connector 1 e AC power source wire In case of the actual articles doesn t accord with above list please advise us immediately 4 2 Installation preparation When install this device please f
10. h double deck glass window is recommended and strictly sealed Can be covered with wallpaper or brightness less paint rather than easy pulverization dope Machine room should matched Fire alarm system and extinguisher Requiring device power air conditioning power and lighting power three independent supply systems Device power requires AC power 110V 60Hz Please check carefully devices running 4 2 3Grounding Requiroment e All function modules good grounding designs are the base of reliability and stability of device working Also they are the most important guarantee of lightning arresting and interference rejection Therefore system must follow above rule e Coaxial cable s outer conductor and both ends of shield layer should keep soundly electric conducting with the metal shell of the device e Grounding conductor must adopt copper conductor in order to reduce high frequency impedance and the grounding wire must be as thick and short as possible e The 2 ends connection points of grounding wire must make sure for well electric conducting disposal of anti corrosion e tis prohibited use other devices as part of grounding wire s electric circuit 16 19 e The junction cross section of grounding wire which connect machine cabinet to lighting protection unit should no less than 25mm 4 2 4 Cabinet Grounding In the same machine room each cabinets grounding ends should connect to the ap
11. nterface LED LCD Keyboard Chart 2 1 QAM digital modulator components 4 19 QAM modulator mainly composed by following modules Data processing cell transform the input signals from all sorts of interfaces to standard signals and make necessary data processing make the pretreatment of QAM modulate QAM modulate cell modulates the data stream to spectrum signal IF modulates output as 35 000 44 00MHz stepping as 125KHz adjustable RF modulate cell transform the IF to 110 862 MHz to TV channels CPU LCD LED keyboard units complete keyboard input LED display and smart control etc 2 2 2 Principle INMOD 6302 QAM Modulator comply with DVB C standard GY T 170 2001 GY T 106 1999 Digital signal will multi process together with other data stream via MPEG II compress and encode the send to QAM modulator QAM encode is according to DVB technical criterion such as interweave RS error correcting encode etc After processed by IF then up frequency conversation to TV channels so that to broadcast in HFC microwave MMDS network can be applied in digital TV digital broadcasting video on demand internet video conference and so on digital broadband application system 2 3 Features Support IYU T 83A Error correct encode completely meet DVB C standard Be workable under QPSK 16QAM 32QAM 64QAM 128QAM 256QAM mode Input interface ASI and SPI DS3 E3 optional Input date bit rate range 1 5 51 6Mbps Output data bit rat
12. ollow steps as below Each of the install details will be described in rest of this charter refer to the rear panel for the specific position This charter contain below contents Check if there any device lost or damaged during the transportation Get ready the surrounding condition for the installation Install QAM Modulator Connect the signal wires 4 2 1 Installation process as below chart Connecting Acquisition Fixing ae Connecting Setting Running Check Device ene Signal Wire Parameter Device Cord 15 19 4 2 2 Surrounding condition requirement Item Machine room space Machine room Floor Surrounding temperature indoor Relative temperature Atmospheric pressure Door and windows Wall indoor Fire protection Power supply Requirements When install many machines array in one room the distance between 2 row should be 1 2 1 5m and the distance to wall should be no less than 0 8m Non conductive dust proof Volume resistivity of ground anti static material 1x107 1x1010Q Grounding limiting resistance 1MQ Floor bearing should be greater than 450Kg m2 Under 5 40 C operate for long time under 0 45 C operate for short time 5 40 C installing air conditioning is recommended Under 20 80 operate for long time under10 90 operate for short time 86 105KPa Must be sealed by dustproof rubber strip wit
13. pine p JXDH 6302 QAM Modulator User Manual V1 5 INITEL TELECOMMUNICATIONS Charter One Outline 1 1 Outline The manual describes the shell assembly functions installation and all the standard options which receivable of this QAM Modulator including as follows e Summarize e Installation e Operation 1 2 Digital TV brief introduction Digital TV is defined as provide satellite TV transmission and digital TV programs services by means of digital transmitting thereby provide users high quality images and features services in the integrated digital TV channels services Digital TV system consists of three parts digital TV head end systems transmit networks user end system As bellow chart1 Digital Content Sink Storage directory decompression l l I I MPEG compression ee CA encode encryption etc l I l l l l l Disposal Interact warrant Edit software Searching content Operating syste Broadcast outlet Return path Output signal HFC PSTN ISDN Digital TV is the necessary result of digital technology in the filed of development for TV Digital TV is make analog signals to digital signals by sampling quantify and encoding Television system should include content transmission and reception The content is collection make etc Transmission is delivery the content to terminal 1 19 end via satellite territory cable network etc thereby to
14. pointed copper strips separately The grounding wire should be as shorter as possible to avoid being coiled cut it to short if the wire is too long when installing The wire s cross section where grounding end connecting to strips should be no less than 25mm 4 2 5 Device Grounding When make device grounding Connect the dependency connection pole to the chief cabinet dependency connection strips by wire 4 3 Wires Connection The power supply jack placed at the right side of the rear panel at its left is power switch At the right lower side it is grounding connect bolt e Connect power wire One end of the power supply wire inserts the AC power jack while the other end connects with the QAM Modulator e Connect grounding wire When connect separately to the room s dependency adopt the mode of independent grounding that is grounding together with other devices such as transmit devices when united grounding the grounding impedance should less than 1Q Caution Before connect to the power source wire make sure the switch of QAM Modulator should be OFF and together with the power supply system be grounding 4 4 Signal wire Connection 4 4 1 RF Output Cable QAM Modulator adopt BNC connector connecting by 75Qcoaxial cable as picture The joint is BNC connector the device end is cathode the cable be anode 4 4 2 Connect ASI Output When set up QAM Modulator ASI input the ASI input interface ASI IN should
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