GB20600 Exciter

DMB-2210 GB20600 Exciter supports all the GB20600-2006 channel encoding and modulation modes, the RF output is 110-862MHz, 0dBm level. The Exciter has the ability of liner and non-liner pre-correction so that it can excite larger power transmitter directly. And it also has 1PPS and 10MHz input and contains clock synchronization module to be used in SFN. The DMB-2210 is the most cost effective GB20600 Exciter in the market.

Main features:

Chinese standard supported, fully compliant with GB20600-2006

SFN and MFN supported

All the transmission mode supported

VHF, UHF frequency range in 1Hz step               

High performance modulation

MPEG-TS bit rates adaptation and PCR correction

Remote parameter configuration according to MIP TPS

Web browser remote control, SNMP is optional

Specification

MPEG-TS Inputs

Comply to EN50083-9 ASI standard

2 ASI inputs, ASI Input adapted automatically

188/204 bytes packet supported

ASI packet modes: burst/byte

Bit rate: 4.813Mbps~32.486Mbps

Connector: 75 ohm BNC      

RF Outputs                       

Center Frequency            110MHz~862MHz, in 1Hz step

lMain Output Level           0dBm

Attenuation                      0 to 10dB, in 0.5dB step

Monitoring Output Level Signal   -20dB

Return Loss                     >15dB

Level Stability                   ±0.1dB/10

I/Q amplitude unbalanced   <0.05%

I/Q quadrature error            <0.05°

MER                                 >40dB

Spurious                            >50dB@±4.2MHz

Connector                          50 ohm , N type

MIP Management

Synchronous information, remote set of modulator parameter

TPS option

supported all the GB20600-2006

Network Mode:

SFN: Time offset,time synchronization,frequency synchronization,bit synchronization

MFN: Bit rate adapted, Nit renew, PCR correction

Test mode

PRBS sequence mode

Pre-correction

Linear Pre-Correction

Non-Linear Pre-Correction

Modulate and code

Modulate                            TDS-OFDM

Supported modes                (FFT): 1, 4K

Outer correct code               BCH

Inner correct code rate (FEC) LDPC

Code rates                           0.4, 0.6, 0.8

Inner interleave                     Supported sign interleave and frequency interleave

Guard intervals                      1/9, 1/7, 1/4

Modulate manner                   4QAM, 4QAM-NR 16QAM, 32QAM

Bandwidth                             6MHz, 7 MHz, 8 MHz

Synchrony 

External 10MHz Reference 

Connector      50 ohm, BNC

Frequency      10MHz

Level              -15 to +15dBm

Internal 10MHz clock     

Stability        0.5ppm

Max              3.0ppm

Level             0dBm ±3dB   

External 1PPS Reference   

Connector      BNC,75ohm

Level             TTL level -5Kohms

Min Pulse width  1us

SFN synchronization accuracy ±200ns

Control

Front Panel                          LCD display & cursor/execute keys

Ethernet                              10/100 Base-T

Web Server                          Embedded

SNMP                                 Optional

Power

Voltage                                AC 90~260V

Frequency                           50~60Hz

Consumption                       Max. 40W

Mechanical Parameter

Operational temperature     -10~50

Storage temperature           -10~70

Humidity                             10%-95%