Chinese Digital Headend TV Equipment IPTo DVB-T RF Modulator

Outline

The IP Mux and modulation module is the latest generation mux-modulating all-in-one device. The modular design of this device makes each of its daughter cards stand-alone when operating. Each daughter card can receive the UDP format TS through GE port, and support up to 256 different input address (IP address and port number). It’s like the all-in-one device combined with 4 multiplexers, (256 channels inputs) and 4 DVB-T modulators, which can output 4 carriers (40M~960M) through the two RF output interfaces. Additionally, 1U chassis supports up to 3 modules (12 channels mux-modulation) while the 4U chassis supports up to 12 modules (48 channels mux-modulation). This IP Mux and modulating module has excellent integrated level, powerful performance and low cost, which is especially adequate for the new generation IP CATV system.

Features

Dual power supply

1 GE input, RJ45interface or SFP

Supports up to 256 channels TS input over UDP, MPTS or SPTS

Supports unicast and multicast, supports IGMP v2\v3

Max 840Mbps for all input

Supports 4 channels multiplexing

Supports accurate PCR adjusting

Supports PID filtering, remapping and PSI/SI editing

Supports up to 180 PIDS remapping per channel

4 DVB-T carriers output ,compliant to ETSI EN300 744 standard

RF output frequency range: 40~860Mhz, 1Khz stepping

RF output level: -16~0dbm (per DVB-T carrier), 0.5db stepping

Excellent RF performance, MER≥40db

Support SNMP

Modular design,1U chassis support 3 modules , 4U chassis support 12 modules

Key Advantage

1) Hot-plugging Support

card is directly connected with the power supply through the interface; even if being powered-on, any one of those three daughter cards can be hot plugged in and out; other cards can still work normally without any influence.

2) Independent Multiplexing Control Unit

Different from the former multiplexing backcard principle, each card has its own independent multiplexing and control unit; Unlike the other manufacturer’s similar products which will completely die when its backbone multiplexing board fails, the ’s 3 daughter cards are completely independent of each other. If anyone of those 3 cards is failed, the other two cards could work normally due to their own multiplexing control unit. Hence, the reliability of the equipment has been greatly improved.

3) Support the RF Output and IP Output AT THE SAME TIME

can not only be used as one IP mux-modulating DVB-T module, but also be utilized to realize other purposes by its IP output function. The IP data output isthe loop output after multiplexing.

For example: An operator has one general DVB-T head-end and two sub-head-ends. At the Main head-end, operator can directly transmit the ’s COFDM RF output to the local HFC network, while at the sub-head-end side; the IP input of the IP DVB-T head-end can directly extract the multiplexed and scrambled IP TS from the ’s IP output via a fiber link. In this case, cards can be utilized to provide a perfect solution for signal transmission so as to achieve high-efficient transmission and cost control.

4)NMS Port for Each

Each card has separate NMS ports, thus, the situation that the equipment cannot be configured when the master card of single master plug-in equipment is disabled won’t happen.

NOTE: If needed, we can also make another version that 3 modules in 1 U chassis can be managed by one NMS interface.

5)High Functional Integration

The functions of multiplexing, modulating and IP output can be totally supported by just 1 card.

6)PCR Anti-Jitter Technology

To solve the IP jitter during the IP network signal transmission, DX324 is especially provided with the unique IP anti-jitter buffer principle in order to suppress the IP jitter (IP jitter suppression ratio is up to 250ms), so as to ensure the stable reception and transmission of video/audio signal.

Specifications

The same we recommand to you: DVB-S modulator,DVB-S2 modulator,QAM modulator,HDMI encoding to DVB-T modulator and so on.