COFDM Video Transmitter Receiver Module With Low Latency H.265 Encoding Decoding
Product Attributes
| Wireless demodulation |
COFDM |
| Bandwidths |
1MHz~8MHz adjustable |
| Wireless code stream |
0.5Mbps to 31.67Mbps |
| Control |
by our Config Panel or other device via control UART |
| Guard interval |
1/32,1/16,1/8,1/4 |
| OEM& ODM |
Support |
COFDM Transmitter Key Features
- COFDM modulation technology for reliable transmission
- H265/H264 audio video encoding with 1080P/I @60fps real-time capture
- Dual video input via HDMI + AV ports with simultaneous compression/transmission
- AES256 encryption for secure communications
- NLOS (Non-Line-of-Sight) transmission capability up to 800km/h
- Fully configurable center frequency, bandwidth, and transmission parameters
- Flexible control via Web UI or serial port UART commands
COFDM Transmitter Overview
The HC-T820 COFDM transmitter module combines COFDM modulation with H.265/H.264 encoding for low-latency video/audio transmission in high-speed and NLOS conditions. The modular design features separate video codec encoder and COFDM modulator boards connected via flat cable, plus a transparent UART transmission channel.
COFDM Transmitter Technical Specifications
Input/Output Interfaces
| HD video input |
HDMI Type A connector |
| Composite video input |
4PIN PH1.5mm connector (CVBS Analog Audio Video Input) |
| UART Data |
3PIN 1.5mm pitch connector (default TTL3.3V, optional RS232) |
| UART Control |
4PIN PH1.5mm connector (TTL3.3V) for Config Panel or host computer |
| Power input |
2PIN PH2.0mm connector (12V Power Supply) |
| RF output |
IPEX connector |
COFDM Wireless Transmission
| Modulation |
COFDM (DVB-T) |
| IFFT mode |
2K |
| Bandwidth |
1MHz~8MHz adjustable (1KHz steps) |
| FEC |
1/2, 2/3, 3/4, 5/6, 7/8 |
| Guard interval |
1/32, 1/16, 1/8, 1/4 |
| Constellation |
QPSK, 16QAM, 64QAM |
| Code stream |
0.5Mbps to 31.67Mbps |
RF Specifications
| Frequency range |
200MHz~2300MHz (custom bands available) |
| Tuning resolution |
1KHz steps |
| Output power |
-93dBm to -5dBm (frequency dependent) |
Audio/Video Processing
| Video inputs |
Automatic detection of HDMI (priority) or AV input |
| Supported formats |
1080@60P/50P/30P/25P/24P/60I/50I/30I, 720@60P/50P/30P, NTSC, PAL |
| Video encoding |
H265/H264 |
| Audio input |
HDMI embedded or analog (Mic/Line selectable) |
| Audio format |
AAC, 16bit, stereo, 32Kbps |
| Latency |
H265: 200-250ms; H264: 50-130ms |
Environmental Specifications
| Operating temperature |
0° to +70°C (optional -40° to +85°C) |
| Storage temperature |
-40° to +85°C |
Physical Specifications
| Dimensions |
70×45×14mm (excluding connectors) |
| Power requirements |
7-24VDC, <340mA@12V |
COFDM Receiver Key Features
- Built in COFDM demodulator and H.264 video decoder
- Full HD resolution,1080P at 60 fps
- High security achieved through AES decryption
- Support Micro SD card or USB disk for DVR recording
- The built-in RTSP server supports Ethernet video stream transmission
- Support video stream transmission to remote devices via USB host
- Support displaying characters string on the video display screen in OSD mode
- Achieve stable signal transmission in non-line-of-sight and high-speed moving conditions
- Working frequency and bandwidth can be adjusted
COFDM Receiver Technical Specifications
Demodulation
| Demodulation formats |
COFDM(DVB-T) |
| Carriers |
2K |
| Bandwidth |
1MHz~8MHz, step by 1KHz |
| FEC |
1/2, 2/3, 3/4, 5/6, 7/8 |
| Guard interval |
1/32, 1/16, 1/8, 1/4 |
| Constellation |
QPSK, 16QAM, 64QAM |
| Bitrates |
0.5Mbps to 31.67Mbps |
RF
| Frequency Bands |
160MHz~4000MHz |
| Tuning Step size |
1KHz |
| Sensitivity |
-97±1dBm(BW=8MHz, QPSK, CR=2/3, GI=1/16) for one channel and add 3dBm for two channels |
Video and Audio
| Video output |
HDMI and CVBS, Ethernet(RTSP protocol by default, option UDP), USB |
| Video formats |
1080P or 720P 720*480 60I(NTSC), 720*576 50I(PAL) |
| Video Decoding |
MPEG-4/H.264 AVC |
| Audio output |
Embedded HDMI and AV audio |
| Audio Decoding |
AAC |
| Decryption |
AES256 |
| Storage |
USB disk or micro SD card |
Others
| Monitoring and control |
setup with Config Panel or Windows PC or other device via control UART |
| Temperature range |
0° to +70°C Ambient |
| Storage Temperature |
-40° to +80°C |
| Receiver board size |
109.4 * 86mm |
| Input voltage |
7~28VDC |
| Power consumption |
<300mA@12V |
Difference between the two kinds of COFDM Receiver Modules
- HD5 COFDM Receiver Module: End-to-end latency of 200-250ms
- HD1 COFDM Receiver Module: Reduced latency of approximately 130ms