DVB-T2 Modulation Board (with ASI Input) and Demodulation Board (with ASI Output): Functions and Features

1. DVB-T2 Modulation Board (ASI Input)

Chức năng

• Converts ASI input signals (typically MPEG-TS streams) into DVB-T2-compliant RF signals for broadcast transmission via antennas or cable networks.
• Applies advanced DVB-T2 encoding and modulation techniques (ví dụ., LDPC/BCH error correction, QPSK/16-QAM/256-QAM modulation) to enhance spectrum efficiency and robustness.

Các tính năng chính

• ASI Interface: Directly connects to ASI-based devices like encoders or multiplexers.
• Flexible Configuration: Supports adjustable parameters (ví dụ., kích thước FFT, khoảng bảo vệ, pilot patterns) to optimize performance for varying environments.
• High Efficiency: Utilizes DVB-T2 advancements (ví dụ., MISO, rotated constellations) to maximize data capacity and coverage.
• Độ trễ thấp: Designed for real-time applications such as live broadcasting.

Ứng dụng

• TV broadcast transmitters, IPTV head ends, satellite uplink stations.

2. DVB-T2 Demodulation Board (ASI Output)

Chức năng

• Receives and demodulates DVB-T2 RF signals, restoring them to ASI-formatted MPEG-TS streams.
• Corrects transmission errors using DVB-T2’s LDPC+BCH error-correction coding.

Các tính năng chính

• Độ nhạy cao: Stable reception in low signal-to-noise (SNR) môi trường, ideal for weak signal areas.
• Robust Against Interference: Mitigates multipath effects via OFDM and dynamic channel equalization.
• ASI Output: Delivers standard ASI streams to downstream devices (ví dụ., decoders, recording systems).
• Real-Time Monitoring: Provides diagnostics (ví dụ., cường độ tín hiệu, bit error rate) để quản lý mạng.

Ứng dụng

• TV receiver stations, cable head ends, mobile reception systems (e.g.,车载TV).

3. Common Features

• DVB-T2 Compliance: Ensures global interoperability with standardized equipment.
• High Reliability: Industrial-grade design for 24/7 hoạt động.
• Network Support: Compatible with Single Frequency Networks (SFN) and Multi-Frequency Networks (MFN).

4. Trường hợp sử dụng

• Phát sóng: Terrestrial digital TV, mobile TV (ví dụ., public transport systems).
• Professional Systems: Thông tin liên lạc khẩn cấp, live event streaming, distance learning.
• Data Services: IP data broadcasting (ví dụ., OTA software updates, ad insertion).

Bản tóm tắt

• Modulation Board: Acts as the máy phát, converting ASI streams into robust RF signals for distribution.
• Demodulation Board: Acts as the người nhận, recovering ASI streams from RF signals even in challenging conditions.
• Cùng nhau, they form a complete DVB-T2 transmission chain, enabling high-capacity, high-reliability digital broadcasting.