COFDM无线下行发射机

COFDM 无线数字视频发射器设计用于高清或标清摄像机, it’s a superior miniature wireless video transmitter designed to capture real-time, high-quality video from Point of View Cameras, UAV/UGV/Body Cams/Concealments, and sports cameras. The transmitter features HDMI or SDI or AV inputs with COFDM modulation technology and H.264/H.265 encoding that complete video audio transmission in high-speed motion and NLOS (非视线) conditions with low latency. COFDM wireless transmitter delivers up to 27dBm/30dBm/34dBm(different model) of power in a small metal case weighing less than 150 克, providing long range, reliable HD video transmission.

• COFDM modulation and H.264/H.265 video compression;
• 全高清分辨率, 1080i/P @60fps;
• Great security by AES encryption;
• 模块化设计，高度集成;
• 非视距和高速移动中稳定的信号传输.
• 工作频率可调, 带宽, bitstream rates, 射频功率, ETC.

Now we have several models COFDM transmitter (in different RF power and video input interface with the same technology solution which lists below) ready to ship. We can also customize wireless COFDM transmitter according to your requirements based on our modules very quickly.

COFDM Transmitter Model	ST100	ST200	ST210-HDMI	ST210-SDI
视频输入	Mini HDMI or AV	HDMI or AV + 以太网络	HDMI or AV	SDI or AV
视频编码器	H.264	H.264	H.264/H.265	H.264/H.265
Maximum RF Power	500毫瓦	1W/2.5W	1W/2.5W	1W/2.5W
功耗	<1A@12V	<1.3A/2.1A@12V	<1.3A/2.1A@12V	<1.3A/2.1A@12V
重量	135G	140G	137G	139G
外形尺寸	74x68x24.7mm	106×63.4x27mm	104.5x50x27mm	104.5x50x27mm

All of our COFDM wireless transmitters are consist of three modules, H264/H.265 video encoder module, COFDM modulation module and power amplifier. All of our COFDM transmitters use the same modulation module(our RCB Module),the same H264 video encoder solution in different board model. All of the transmitters can be setup with our Config Panel or Windows PC via control UART.

COFDM wireless transmitter Specification:   

IO

HD Video input	HDMI/SDI/Ethernet(Specify in different model)
Composite Video input	NTSC or PAL
数据串口	最多 115200 baud Selectable
控制串口	UART setup from Config Panel or PC or other device
电源输入	DC supply
射频输出	SMA

调制

调制格式	COFDM图传(DVB-T)
运营商	2K
带宽	可配置范围为 1MHz 至 8MHz, 步进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
比特率	0.5Mbps 至 31.67Mbps

射频

频段	指定: 300～360MHz, 350~400MHz, 450～500MHz, 520～560MHz, 580～620MHz, 680～720MHz, 820～860MHz, (customizable from 200~860MHz)
调整步长	1千赫
断电	27分贝, 30分贝, 34分贝(Specify in different model)

视频和音频

视频输入	HDMI/SDI(指定) 或CVBS, 系统启动后自动检测
视频格式	1080@60P, 1080@50P, 1080@30P, 1080@25P, 1080@24P, 1080@60I, 1080@50我, 1080@30I, 720@60P, 720@50P, 720@30P, …… 720*480 60我(NTSC), 720*576 50我(PAL)
视频编码	H.264/H.265
音频输入	Embedded HDMI/SDI or AV audio
音频编码	亚克力, 16bit, 立体声, 32千比特每秒
加密	AES256

表现
Video latency: about 200ms, when our COFDM transmitter is paired with the receiver, the video(1080p60) latency from its inputting of the transmitter to the HDMI screen displaying of the receiver is about 200~250ms.

Wireless transmission range: this is relative with many conditions, the following data is just for your reference. When 1W(射频功率) COFDM transmitter paired with the receiver, 6MHz带宽, centre frequency 590MHz, 5 dBi omni antenna with 2 metres to the groud on both sides, the LOS(视线) transmission range is about 1km to 2km. When 1W(射频功率) COFDM transmitter paired with the receiver, 6MHz带宽, centre frequency 590MHz, 1.5 dBi omni antenna on the UAV(flying height 100 metre), 二 7 dBi omni antenna with about 2 metre to the ground, the LOS(视线) transmission range is about 10km to 20 公里。

监测与控制
Comprehensive transmitter setup with Config Panel or PC or other device via Control UART.

温度范围
规格齐全: 0° to +55°C Ambient

电源要求
输入范围: 11～13VDC

ST100 Transmitter:

ST200 Transmitter:

ST210-HDMI Transmitter:

ST210-SDI Transmitter: