Broadcast HDMI Encoder to DVB-T RF Modulator Module – H.264 HD Video Encoder
Overview
The Broadcast HDMI Encoder to DVB-T RF Modulator Module is a professional digital TV distribution solution that converts HDMI audio and video signals into DVB-T digital RF signals for transmission over coaxial cable networks.
Featuring H.264 video encoding, adjustable bitrate, configurable RF frequency, and Ethernet-based web management, this compact modulator makes it easy to distribute HD video from a single HDMI source to multiple compatible televisions and displays.
It is ideal for hotels, commercial buildings, educational facilities, CCTV systems, digital signage, and professional broadcast installations that require reliable video distribution over existing coaxial infrastructure.
Key Features
• HDMI Input: Accepts HDMI audio and video signals from cameras, satellite receivers, media players, computers, and other compatible HD sources.
• H.264 Video Encoding: Uses MPEG-4 AVC/H.264 compression for efficient HD video transmission.
• DVB-T RF Output: Converts HDMI signals into digital terrestrial television RF signals for distribution through coaxial cable networks.
• Wide RF Frequency Range: Adjustable output frequency from 50 MHz to 900 MHz, with 1 kHz tuning steps.
• Adjustable Video Bitrate: Configurable encoding bitrate from 5 Mbps to 25 Mbps to accommodate different video quality and bandwidth requirements.
• High RF Output Level: Output level up to 100 dBµV, with adjustable attenuation up to 30 dB.
• Flexible Audio Encoding: Supports AAC and MPEG-1 Layer II audio encoding with a 48 kHz sample rate.
• Convenient Web Management: Configure operating parameters through an Ethernet connection and browser-based management interface.
• LCD Display and Buttons: Provides local status monitoring and convenient on-site configuration.
• Compact Installation: Small dimensions and a wall-mountable design make installation easy in space-constrained environments.
• Multi-Channel Distribution: Multiple modulators can be configured on different RF channels to distribute several video sources through a shared coaxial network.
Technical Specifications
Video Encoding
• Video Compression: MPEG-4 AVC / H.264
• HDMI Input: 1 × HDMI
• Supported Input Resolutions:
- 720p at 50/60 Hz
- 1080i at 50/60 Hz
- 1080p at 50/60 Hz
• Maximum Specified Output Resolution: 1080p at 30 Hz
• Adjustable Video Bitrate: 5–25 Mbps
Audio Encoding
• Audio Compression: AAC, MPEG-1 Layer II
• Audio Sample Rate: 48 kHz
RF Modulation
• Modulation Standard: DVB-T
• RF Frequency Range: 50–900 MHz
• Frequency Adjustment Step: 1 kHz
• RF Output Level: Up to 100 dBµV
• RF Attenuation: Adjustable up to 30 dB
• Typical MER: Greater than 35 dB
• Channel Bandwidth: 6 / 7 / 8 MHz
• FFT Modes: 2K / 8K
• Constellation: QPSK / 16QAM / 64QAM
• Code Rates: 1/2, 2/3, 3/4, 5/6, 7/8
• Guard Intervals: 1/4, 1/8, 1/16, 1/32
Network and Control
• Local Control: LCD display and buttons
• Remote Control: Ethernet web interface
• Default IP Address: 192.168.0.168
• Configuration: Browser-based Web NMS
• Firmware Updates: Via Ethernet
• Management Language: English
General Specifications
• Power Supply: DC 12V, 1A
• Dimensions: 136 × 36 × 27 mm
• Weight: Approximately 252 g
• Installation: Wall-mountable
Applications
Hotel and Hospitality TV Systems
Distribute HDMI video sources throughout hotels, resorts, and hospitality facilities using existing coaxial cable infrastructure.
Commercial Video Distribution
Deliver centralized HD content to multiple televisions and displays in shopping centers, offices, waiting rooms, and commercial buildings.
CCTV and Security Monitoring
Integrate compatible HDMI video sources into a DVB-T television distribution network for centralized monitoring.
Education and Corporate Training
Distribute presentations, training videos, and other HDMI content to multiple rooms and displays through a shared RF network.
Digital Signage
Provide centralized video content to compatible displays in public spaces, retail environments, and commercial facilities.
Broadcast and AV Integration
Integrate HDMI sources into professional RF distribution systems and digital TV headends.
How It Works
- Connect your HDMI video source to the modulator's HDMI input.
- Connect a computer to the Ethernet interface to configure the device.
- Set the DVB-T output frequency, channel bandwidth, encoding bitrate, and other required parameters.
- Connect the RF output to a compatible coaxial cable distribution network.
- Tune each connected DVB-T-compatible television or receiver to the configured RF channel.
Multiple modulators can be configured on different RF channels to distribute different video sources through the same coaxial network, subject to the available channel capacity and system design.
FAQ
Q1: What does this HDMI to DVB-T RF modulator do?
It converts HDMI audio and video into a DVB-T digital RF signal, allowing the content to be distributed over a coaxial cable network to compatible digital terrestrial TV receivers.
Q2: Can one modulator distribute video to multiple televisions?
Yes. One modulator can distribute the same RF channel to multiple compatible televisions connected to the coaxial network. The number of displays depends on the network design, signal distribution, and reception conditions.
Q3: What is the supported RF frequency range?
The adjustable RF output frequency ranges from 50 MHz to 900 MHz, with tuning steps of 1 kHz. The selected frequency must be compatible with local regulations and the receiving equipment.
Q4: Can I adjust the video bitrate?
Yes. The encoding bitrate is adjustable from 5 Mbps to 25 Mbps. The appropriate setting depends on the video content, desired image quality, and available transmission bandwidth.
Q5: How do I configure the device?
You can use the front-panel LCD and buttons or connect a computer through Ethernet and access the web-based management interface.
Q6: Can I distribute multiple HDMI sources through one coaxial network?
Yes. Multiple modulators can be configured on different RF channels and combined into a shared coaxial distribution system using suitable RF combining equipment.
Q7: What power supply does the module require?
The specified power supply is DC 12V, 1A. Use a compatible regulated power adapter.
Q8: Is this product suitable for professional installations?
Yes. Its configurable RF output, adjustable encoding bitrate, Ethernet management, and compact design make it suitable for commercial AV distribution, hospitality TV systems, education, and broadcast integration.
Package Contents
• 1 × Broadcast HDMI Encoder to DVB-T RF Modulator Module
Note: Please confirm the included power adapter, cables, and optional accessories with the supplier before ordering.
Important Notes
• This product outputs DVB-T RF signals. Ensure your receiving televisions or set-top boxes support the selected digital TV standard.
• Confirm that the selected RF frequency and channel bandwidth comply with local broadcasting regulations.
• The actual video quality and distribution distance depend on encoding settings, coaxial cable quality, RF signal levels, and the overall distribution system.
• The maximum specified output resolution is 1080p at 30 Hz. Confirm your required input and output formats before purchasing.