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MDMB02 DMB-T Modulator

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Overview

MDMB02 DMB-T modulator is a high performance modulator developed on the basis of China Digital Terrestrial Broadcasting Standard GB20600-2006. With two ASI inputs, this equipment supports all 330 working modes covered by standard GB20600-2006. With GPS 10 MHz and 1PPS input port; support SFN working mode, as well as linear and nonlinear pre-correction, which can improve the output performance of the transmitter.

Frequency range of this modulator is 110~860Mhz; with excellent RF output performance and frequency stability; support local and remote parameters configuration. It can be widely used in DMB-T digital broadcasting network construction and STB production & test.

Main Features

  • Completely support GB20600-2006;

  • Support both SFN and MFN;

· Support both single carrier and multicarrier;

· Support linear and nonlinear pre-correction;

  • Excellent phase noise and MER performance, MER≥40db;

  • RF output range: 110~860Mhz, 1hz stepping;

  • 2 ASI inputs, supporting loop output and hot-standby;

  • Adopt OCXO, frequency stability is up to 0.1ppm;

  • LCD & button operation;

  • Support NMS.

Technical Index

Input

2 ASI inputs, supporting hot-standby, BNC

GPS 10Mhz reference Clock input, BNC

GPS 1PPS input, BNC

Modulation

Standard

GB20600-2006

FFT

1,3780

Constellation

4QAM-NR, 4QAM, 16QAM, 32QAM, 64QAM

Frame Format

420, 595, 945

FEC

0.4, 0.6, 0.8

Interleaving Depth

240, 720

RF Output

ASI Loop Output

2 ASI loop outputs, BNC

Connector

N-connector, impedance 50Ω

110~860Mhz, 1hz stepping

Output Level

-16dbm~0dbm, 0.5db stepping

MER

≥ 40db

Linear Pre-correction

Correction Point

12

Nonlinear Pre-correction

Correction Point

256

System

Support LCD & Button operation, NMS, and Chinese-English interfaces

Software can be upgraded via network

General

Dimension(Width x Length x Height)

××

Weight


Temperature

0~(Working), -20~(Storing)

Power Supply

AC 110V±10%, 50/60Hz or AC 220V±10%, 50/60Hz

Power Consumption

28.6W