Detailed Product Description

DVB-T Gap Filler is applied to increase coverage of the weak-signal area in terrestrial digital TV broadcasting network, which can effectively improve the coverage quality and scope. DMB-4018 adapts advanced echo cancellation arithmetic to cancel the coupling between input and output signals. It has on channel repeater mode and transposer mode, supports MFN and SFN. It can be used for various kinds of coverage of the weak-signal area.

Main features

DVB-T/DVB-H supported

Linear and non-linear pre-corrector supported

Intelligent automatic output power management

Programmable transfer delay

On channel repeater mode and transposer mode supported

Web browser remote control, SNMP is optional

SPECIFICATION

RF Input

Frequency                 474 MHz to 858 MHz

Channel Band width    5,6,7,8MHz

Sensibility range         -75~-42dBm

Return loss                >15dB

Connector                  50ohm, N-type, female

RF Output

Frequency Adjustment range  170 MHz to 858 MHz, in1Hz step

Main Output Level             0dBm

Monitoring Output Level     -20dB

MER                               >35dB

Shoulder                         >40dB

Spurious                         >55dB

Connector                       50ohm N-type female

MPEG-TS Output

DVB ASI Monitoring         DVB-T/H

Packet size                    188 Bytes

Connector                       75ohm, BNC

Comply to EN 50083-9 ASI

Bit rate                           3~31.67Mbps(comply to 300744)

Repeat functions

Transfer delay time          Max.200us, in step of 0.1us

Echo cancellation            Self adaption

Digital Pre-correction       support non-linear and linear digital pre- correction

Power Management         Progressive power rising

                                     Automatic power limitation non over coupling

Clock and Synchronization

Internal 10MHz clock         stability           < 0.5ppm

                                        Aging              < 3.0ppm

                                       Output level      0dBm±3dB

External 10MHz Reference     Connector        75ohm, BNC

                                            Level               -15 ~ +15dBm

Control

Front Panel                          LCD display & cursor/execute keys

Web Server                          Embedded

Power

Voltage                                AC 90~260V

Frequency                            50~60Hz

Consumption                        Max. 45W

Mechanical Parameter

Operational temperature        0~45^oC

Storage temperature             -20~70^oC

Humidity                             10%-95%

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

Weight                                6kg