Detailed Product Description

DMB-2018 DVB-T Exciter

OVERVIEW:

DMB-2018 DVB-T Exciter is designed to meet the most demanding requirements of today's Digital Terrestrial Television Broadcast Market. With advanced baseband process and up-convert technology, it totally complies with DVB-T/DVB-H standard and supports hierarchical mode to output high quality RF signal. Integrated linear and non-linear pre-distortion correction technology of baseband process, it is able to correct all distortion of strong power transmitter effectively, ensuring transmitter to output high quality digital TV broadcasting signal. With the functions of auto-protection and redundancy, DMB-2018 supports SNMP to supply perfect network management for operators.

MAIN FEATURES:

       Support DVB-T/DVB-H standard

       4 ASI inputs, support various input modes

       Support SFN and MFN

       Support linear and non-linear predistortion correction

       Support remote configuration modulation parameter of MIP packet

       Support hierarchical and non-hierarchical modulation

       Strong auto-protection

       Reliable redundancy function

       Perfect real-time monitoring and alarming function

       WEB browser remote control, SNMP supported

Specification

MPEG TS Input

       Comply with EN 50083 ASI connector standard

       188 bytes without RS coding and 204 bytes with RS coding supported

       ASI packet mode: burst/byte

       bit rate: 5-31.67Mbps(according to ETSI 300744 standard)

        4 ASI inputs and

       Redundancy: manual and auto- mode

       Connector: BNC, 75ohm

RF Output

       Central frequency range:  170MHz~862MHz, in 1Hz step

       Main signal level: 0dBm

                       Attenuation: -10dB~0dB, in 0.1dB step

                       Monitoring output level:-20dB

                       Stability:±0.1dB/10

       MER:    >38dB

       Shoulder: >48dB@±4.2MHz

       Connector: N, 50ohm

MIP Management

       Synchronous information, remote configure modulator parameter

TPS

       Time slice, MPE FEC

DVB-T/H Network Mode

     SFN mode: time offset

     MFN mode: bit rate adapted, NIT renew, time delay

Modulation and Coding

     FFT:2K,4K,8K

     FEC:1/2,2/3,3/4,5/6,7/8

     Guard intervals:1/4,1/8,1/16,1/32

     Modulation: QPSK,16QAM,64QAM

     Hierarchical modulation parameter: Alpha=1,2,4

     Inner interleave: native/in depth(DVB-H only)

     Bandwidth:5MHz,6MHz,7MHz,8MHz

     TPS signal: DVB-T or DVB-H

SFN Clock Sync.

     External 10MHz clock sync.(GPS):

           Input level:-15dBm~+15dBm

           Input connector: BNC type, 75ohm

     Internal 10MHz clock sync.:

     Stability: 0.5ppm(typical);3.0ppm(max)

     Attenuation:±0.6ppm

     Level:0dBm±3dB

     External 1pps clock sync.(GPS):

          Input parameter level: TTL level 50ohm

          Input parameter min. pulse width: 1μs

          SFN synchronous precision: ±200ns

          Input connector : BNC , 75ohm

Redundancy

     Double inputs redundancy

     Complete equipment redundancy

Control and Management

     Front panel

     Web browser

     SNMP supported

     Ethernet update

Mechanical Parameter

     Voltage: AC 90-260V 50/60Hz

     Consumption: 40W

     Operating temperature:-10~50

     Humidity: 10%-90%

     Dimension: 483mm(L)X430mm(W)X40mm(H)

     Weight:6kg