Detailed Product Description

DVB-T Modulator DMB-2018 supports all the DVB-T & DVB-H mode, supports hierarchical and non hierarchical modes. The Exciter has digital linear and non-linear pre-correction functionalities. which can directly excite the DTV transmitter. The RF output is from 173MHz to 858MHz with a step of 1Hz. The Exciter has 1pps and 10MHz inputs, supports MIP remote parameter configuration. Furthermore, it can adjust inner delay according to MIP TPS to synchronize with other exciters in the same SFN. DMB-2018 DVB-T Exciter is the best choice for the Digital Terrestrial operators.

Main features

• DVB-T & DVB-H supported
• 4 ASI input management, various kinds of input supported
• SFN and MFN supported
• Linear and non-linear pre-correction supported
• Remote parameters configuration according to MIP TPS
• All DVB-T&DVB-H modes supported, including hierarchical modes
• Web browser remote control, SNMP is optional

SPECIFICATION

• MPEG-TS Input

Comply to EN50083-9 standard

Bit rate: 3~31.67Mbps

4 ASI inputs

Connector: 75 ohm BNC

ASI packet length: 188/204 bytes without RS coding and 204 bytes with RS coding

ASI packet modes: burst/byte

Powerful ASI input management: redundancy, automatic switching

Clock sync.

Internal 10MHz clock     

Stability: 0.5ppm

Aging: 3.0ppm

Tuning:±0.6ppm

Level: 0 to ±3dBm

External 10MHz Reference 

Connector: 75 ohm BNC

Frequency: 10MHz

Level: -15 to +15dBm

External 1PPS Reference   

Connector: 75 ohm , BNC

Level: TTL level -5Kohms

Min Pulse width: 1us

SFN synchronization accuracy ±200ns

• MIP Management

Synchronous information, remote configure modulator parameter

Time slice, MPE FEC

Network mode

SFN: Time offset

MFN: Bit rate adapted, NIT renew, time delay

• Modulation and coding

FFT                        2K, 4K, and 8K

Guard Intervals        1/4, 1/8, 1/16, 1/32

Constellations         QPSK, 16QAM, 64QAM

FEC                       1/2, 2/3, 3/4, 5/6, 7/8

Hierarchical Modes  16-QAM & 64 QAM in alpha-1, 2&4

Channel Bandwidth   8MHz, 7MHz, 6MHz, 5MHz

Inner interleave         Native/In depth (DVB-H only)

TPS signalization      DVB-T and DVB-H

• RF Output

Connector                50 ohm  N-type female,

Frequency                170MHz ~ 860MHz, level 0dBm, in 1Hz step                             

Attenuation               0 to 10dB in 0.1dB step

Level Stability           ±0.1dB/10

Return Loss              >15dB

Monitoring Output Level  -20dB

Attenuation                0 to 10dB in 0.1dB step

I/Q amplitude unbalanced  <0.05%

I/Q quadrature error      <0.05°

Shoulder                     >48dB @±4.2MHz

MER                          >38dB

Spurious                     >50dB

• Control

Front Panel                          LCD display & cursor/execute keys

Web Server                          Embedded

• Power

Voltage                                AC 90~260V

Frequency                           50~60Hz

Consumption                       Max. 40W

• Mechanical Parameters

Operational temperature       -10~50^oC

Storage temperature            -10~70^oC

Humidity                             10%-95%

Dimension                           318mm(W)×483(L)mm×44mm(H)

Weight                                6kg

• ORDING INFORMATION