Model Number

DMB-2028

DMB-2028 is a new DVB-T/H modulator which especially designed for middle and Small digital terrestrial television broadcast network and enterprise level signal Generator market.DMB-2028 is a high performance DVB-T/H modulator which has 0dBmoutput level in full VHF/UHF frequency range, and contains three kinds of test modes.

DVB-T & DVB-H supported ,fully comply with ETS 300744 and TS101191
2K,4K,8K modes Supports
Channel center frequency tunable from 30MHz to 1000MHz (standard version)with 1Hz frequency step, or 1400Mz to 1700MHz (L-band version)
RF output level 0dBm, in 0.1dBm step
Remote parameters configuration according to MIP TPS
Bit rate adaption and PCR re-stamping
Three kinds of test modes
Web browser remote control, SNMP is optional

SPECIFICATION
Input
MPEG-TS Comply to EN50083-9 standards
One ASI input, bit rate adaptation
Connector: 75 ohm BNC
ASI packet length: 188 Bytes
ASI packet modes: burst/byte
Max.Usefulbitrate:upto31.67Mbps

Signal Processing
 Supported Standard ETS 300744
 Supported Modes IFF T: 2K,4K,and8K
 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
 Network mode MFN
 Channel Bandwidth 8MHz,7MHz,6MHz,5MHz
 Inner interleave Native/ In depth (DVB-H only)
 TPS signalization DVB-TORDVB-H

ASI Output
 Packet size 188Bytes

RF Outputs
 Connector Two Connector:50ohmN-type
 Frequency Adjustment range 30MHz to 1000MHz, in 0.02Hzstep
Adjustment range 1400MHz to1700MHz, in1Hzstep (optional)

Main Output Level
Signal:0dBm1dB
Attenuation:0to10dBin0.1dBstep
Level Stability: 0.5dB
Return Loss:>15dB

Monitoring Output Level
Signal:-20dB2dB
Attenuation:0 to10dB in 0.1d Bstep
 I/Q amplitude unbalanced <0.05%
 I/Q quadrature error<0.05
 MER >40dB
 Spurious >55dB

Clock and Synchronization
 Internal reference clock (TCXO)

Test Modes

PRBS sequence 23 bit PRBS sequence is substituted to
the pay load of the MPEG-TS packets
NULL symbol insertion
A NULL symbol is inserted at the
beginning of each megaframe
Central carriers cancelled
251carriers located in the middle of the
spectrum are cancelled.

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

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

Environmental
 Operating Temperature -10~50°C
 Storage Temperature -10~70°C
 Humidity operating/storage Max.80%RH

Mechanical
 Width 318mm
 Height 44mm
 Depth 483mm
 Weight 6kg
 Transport and Storage Vibration acc. To IEC Pub1.68
Compliance
 EMC EN50081-1,EN50082-1

EN50081-2,EN50082-2
 Safety EN60950

ORDING INFORMATION
DMB-2028DVB-T/H modulator (frequency range 30MHz to1000 MHz)
DMB-2028-LDVB-T/H modulator (frequency range 1400MHz to1700 MHz)