Hincn Limited
Hincn Limited
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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.
| 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 |
| 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 |
| Frequency range | 200MHz~2300MHz (custom bands available) |
| Tuning resolution | 1KHz steps |
| Output power | -93dBm to -5dBm (frequency dependent) |
| 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 |
| Operating temperature | 0° to +70°C (optional -40° to +85°C) |
| Storage temperature | -40° to +85°C |
| Dimensions | 70×45×14mm (excluding connectors) |
| Power requirements | 7-24VDC, <340mA@12V |
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 bettween the two kinds of COFDM Receiver Modules: