Origin	China
Model Number	DMB-2018

DMB-2018 is a high-end DVB-T/H modulator, fully supports DVB-T/H standards.DMB-2018 can be used to set up digital terrestrial TV Single Frequency Networks and Multi Frequency Networks. DMB-2018 supports hierarchical and non hierarchical modes, digital linear and non-linear pre-correction functionalities. The center frequency of the RF output can be set from 173MHz to 858MHz with a step of 1Hz. DMB-2018 modulator is the best choice of terrestrial digital television operators.

Main features:
 DVB-T & DVB-H supported ,fully comply with ETS300744 and TS101191
 Powerful ASI input management
 SFN and MFN operation supported
 Linear and non-linear pre-corrector 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
Inputs
 MPEG-TS Comply to EN50083-9 standard
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
Bit rate: 5~31.67Mbps
Bit rate adaptation and PCR restamping
Max delay for static delay: 1s (MFN only)
Max delay for seamless switching: 1s (SFN only)
Max delay for automatic delay: 1s (SFN only)
Powerful ASI input management: redundancy,
automatic switching
 Internal 10MHz clock Stability: < 5.10-9
Aging: < 3.10-8
Tuning: ±0.6ppm
External 10MHz Reference Connector: 50 ohm BNC
Frequency: 10MHz
Level: -15 to +15dBm
External 1PPS Reference Connector: BNC
Frequency: 1PPS
Level: TTL level -5Kohms
Min Pulse width: 1us
SFN synchronization accuracy ±200ns

Signal Processing
 Supported Modes IFFT: 2K, 4K, and 8K
 Guard Intervals 1/4, 1/8, 1/16, 1/32
 Code Rates 1/2, 2/3, 3/4, 5/6, 7/8
 Constellations QPSK, 16-QAM, 64-QAM
 Hierarchical Modes 16-QAM & 64 QAM in alpha-1, 2&4
 Network mode SFN&MFN
 Channel Bandwidth 8MHz, 7MHz, 6MHz, 5MHz
 Inner interleave Native/In depth (DVB-H only)
 TPS signalization DVB-T OR DVB-H

RF Output
 Connector Two Connector, 50 ohm N-type female,
 Frequency Adjustment range 173MHz to 858MHz, level 0dBm, in 1Hz step;
Main Output Level Signal: 0dBm±2dB
 Attenuation: 0 to 10dB in 0.1dB step
Level Stability: ±0.1dB/10°C
Return Loss: >15dB
 Monitoring Output Level Signal: -20dB±2dB
 Attenuation: 0 to 10dB in 0.1dB step
 I/Q amplitude unbalanced <0.05%
 I/Q quadrature error <0.05°
 MER >38dB
 Spurious >50dB

Test Modes
 PRBS sequence 23 bit PRBS sequence is substituted to the
payload of the MPEG-TS packets
NULL symbol insertion A NULL symbol is inserted at the beginning of each mega frame

Central carriers cancelled 251 carriers located in the middle of the spectrum are cancelled.

Pre-correction
Non-Linear Pre-Correction
Non-linear pre-correction over a 20MHz bandwidth
Curve Formats:S21 and VO\VI
Amplitude Scale: Liner and Logarithmic
Correction Points: Max.256,

Linear Pre-Correction
 Correction Points:21
 Amplitude correction: ±10dB
 Amplitude Resolution: 0.01Db

Control
 Front Panel LCD display & cursor/execute keys
 Ethernet 10/100 Base-T
 Web Server Embedded
 SNMP Optional

Power
 Voltage 90~250V AC
 Frequency 50~60Hz
 Consumption Max. 40W
 Harmonic Correction EN61000-3-2

Mechanical
 Width 318mm
 Height 44mm
 Depth 483mm
 Weight 6kg

ORDING INFORMATION
DMB-2018-IF DVB-T/H modulator with 30-40MHz IF out or 70MHz IF out
DMB-2018-IQ DVB-T/H modulator with I and Q out
DMB-2018 DVB-T/H modulator with VHF and UHF out