DTMB HD Encoding & Modulator (DT Series)

Overview

The DT Series HD Encoding & Modulator (all-in-one) supports up to 8 × HDMI inputs and 2 × RF DTMB (DVB-T/C) outputs. The encoded and modulated output signal can be configured via the front panel LCD and NMS (Network Management Software). Its highly integrated and cost-effective design makes it widely used in various digital distribution systems such as:

• Cable TV digital head-ends

• Satellite digital TV broadcasting

• Terrestrial digital TV systems

Features

• Integrated encoder and modulator

• 8 × HDMI input

• DTMB (DVB-T/C) RF output

• DTMB (DVB-T/C) RF frequency range: 36 - 900 MHz

• Control via front panel keyboard + LCD and network management

• Optional HDCP (High-Bandwidth Digital Content Protection) support

Model Number Options

Notes:

• "H" = High Definition

• "i" = Interlaced, "p" = Progressive

• "D1" = HDCP Supported, "D0" = HDCP Not Supported

Technical Specifications

Video Encoding

• 8 × HDMI 1.3 inputs

• Encoding format: 4:2:0 H.264 HP@L4, MP@L3, H.264/MPEG-4 AVC

• HD resolutions:

  • 1920 × 1080 @ 60/50Hz (1080i/p)

  • 1280 × 720 @ 60/50Hz (720i/p)

• SD resolutions:

  • 720 × 576i (PAL)

  • 720 × 480i (NTSC)

• Bitrate: 1.0 ~ 15 Mbps, continuously adjustable per channel

Audio Encoding

• Audio source: Embedded audio from HDMI

• Sampling rate: 48 kHz

• Bitrate: 64 / 128 / 192 / 256 / 384 kbps

DTMB Modulation

• Output level: 85 ~ 105 dBμV

• Frequency range: 30 ~ 900 MHz, 1 kHz step

• Interleaving: 240, 720

• Level attenuation: 0 ~ 20 dB (0.5 dB step)

• Standard: GB20600-2006

• Constellation: 4 QAM-NR, 4/16/32/64 QAM

• Frame mode: 420 fixed, 595 fixed, 945 fixed, 420 variable, 945 variable

DVB-C Modulation

• Interface: RF, F-type connector, 75 Ω

• Frequency range: 47 ~ 870 MHz (1 kHz step)

• MER: ≥ 40 dB

• Error correction: RS code (188/204)

• Symbol rate: 5 ~ 9 Msps

• Constellation: 16 / 32 / 64 / 128 / 256 QAM

• Output level: ≥ 115 dBμV, ≥ 100 dBμV

• BER: 0

DVB-T Modulation

• Transmission mode: 2K, 8K

• Frequency range: 36 ~ 900 MHz, 1 kHz step

• Output level: 60 ~ 90 dBμV, ≥ 100 dBμV

• Bandwidth: 6 MHz, 7 MHz, 8 MHz

• Constellation: QPSK, 16 QAM, 64 QAM

• Baud rate: 1/2, 2/3, 3/4, 5/6, 7/8

• Protection interval: 1/32, 1/16, 1/8, 1/4

Control

• Remote (IP): NMS (via Ethernet port, RJ-45, 10/100Base-TX)

• Local: Front panel keyboard + LCD

General

• Dimensions: 482 mm × 410 mm × 44 mm

• Operating temperature: 0 ~ 45°C

• Storage temperature: -20 ~ 80°C

• Power supply: 100 ~ 240 V AC, 50 Hz, 25 W