IPQAM DVB technology introduction
IPQAM is a multifunction device,which collects the functions of multiplexing, scrambling, modulating, and frequency converting. It multiplexes the program streams which input from IP backbones network to specified multi-service transport stream, and then go through with QAM modulation and frequency conversion, and finally output RF. The process of QAM interactive VOD business is shown as below:
Interactive data: STB access certification, transmit EPG information scanning and other data through IP network, including up data and down data.
Audio and video streams: Firstly, VOD server transfer the audio and video streams to IPQAM equipment by appropriate packing; secondly, IPQAM modulates the audio and video streams to RF signals, then transfers the RF signals to STB through HFC network; thirdly, STB modulates and decodes the audio and video streams.
IPQ6800 introduction
IPQ6800 is an IPQAM modulator with high quality which is launched by Hangzhou Dibsys Technologies Co., Ltd. It supports VOD, unicast, broadcast, data and other business. IPQ6800 makes full use of the bandwidth of Gigabit Ethernet; a single machine can support 4 to 48 QAM channels, and can flexiblely place at the leading front end, branch front end or the convergent point of fiber optic. IPQ6800 provides a solution with high density, high flexibility, high quality and lower price for the radio and television operators to develop VOD business.
The features of IPQ6800 Series
(1) Up to 48 way high density, standard 1U case
(2) Adopt front-fan design with the advantages of low noise, low power and green energy saving
(3) Adopt modular design which helps the upgrade and capacity expansion of the system
(4) Support online plug module, and will not affecting the normal operation of business while doing a upgrade
(5) 1+1 dual power redundancy backup to insure the stability of system
(6) 2+2 double optical interface (or electrical interface ) redundancy backup to insure the reliability of data transmission
(7) Support 47-1000MHz full band agility
(8) Support 16, 32, 64, 128, 256QAM modulation
(9) Support SPTS,MPTS,DATA
(10) Network anti- Dithering capacity is larger than 1000ms
(11) PCR anti- Dithering capacity is less than 500ns
(12) Support WEB/SNMP/SSH/local CONSOLE management, etc.
(13) Support remote centralized network management, alarm information supports cellphone SMS text alerts
(14) Support VBR/CBR transport streams inputs
Performance Index
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Network management interface
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2 10/100Base- T
Ethernet interface
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Support Web, SNMP, SSH protocols, etc
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Data processing
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The format of packet:188/204 byte, a maximum number of 7 TS packets for each UDP
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Support MPEG2, MPEG4 , H.264 and other programs output
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Support SPTS, MPTS, DATA
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Support UDP, RTP, IGMPv3 protocols, etc.
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Network anti- Dithering capacity is larger than1000ms
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PCR anti- Dithering capacity is less than500ns
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Support PSI/SI list processing
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Support TS Scrambling
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Models
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IPQ6804/IPQ6808/ IPQ6816/ IPQ6824/IPQ6832/ IPQ6840/ IPQ6848
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Case
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535 mm (L)×484mm(W)×44mm(H)
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1U 19 inches standard single machine structure
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Weight:8Kg
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Power
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Voltage:220VAC
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Power consumption:less than 160W
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Working environment
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Temperature:0-65°C
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Humidity:
10%-90%(non-condensed)
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GbE input interface
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4×SFP interface, support optical or electrical interface
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Support Gigabit 2+2 backup
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Support full load bitrate
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QAM module
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Support 6 boards and online plug
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Every board with 2 way RF output
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Every RF outputs 4 frequency points, and a total output of 48 frequency points
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Every frequency point can individually choose the opening and closing states
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RF output
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Output interface: female F Joint
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Output Impedance:75Ω
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Support 3.6-6.952 Msyb/s symbol rate
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Support 16, 32, 64,128,256 QAM modulation
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Frequency output range:47-1000 MHz
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Output level:105-120 dBuV, adjusting step size is 0.5 dB
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Out of band rejection: ≥ 60 dB
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Output MER: ≥ 40 dB
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Reflection loss:≥ 14 dB
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RF Spots
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4,8,16,24,32,40,48
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