Wireless Video Transmitter and Receiver for Camera, drone video download link, COFDM图传
相机无线视频传输器, HDMI HD H265 264 encoder 1W/2.5W PA 1080P60
Table of Contents
Application
- Full set HDMI input, HDMI output for long-rang Video Transmission.
- HD Wireless Video Transmitter and Receiver kit for CCTV Security cameras, Wedding DSLR camcorders,
- HDMI CVBS AV input on the Wireless Video Transmitter, Receiver has Ethernet / RJ45 / IP output to the computer, notebook for live streaming
- Wireless video transmitter for conference rooms (There are some obstacles between transmitters and receivers, NLOS: none-line-of-sight)
- Wireless 1080p video transmitter and receiver for Drone UAV video data downlink from the air to the ground
Transmitter Advantage
- This high-definition digital wireless video transmission transmitter includes an HDMI / CVBS （analog AV Audio Video）encoding board, a COFDM modulation module, and a small 1瓦或 2.5 瓦功率放大器 功放模块.
- The entire box is made of a CNC aluminum alloy shell that is small and light. The transmission resolution is excellent, and the transmission distance is long.
- Modulation using COFDM.
- 默认情况下, H265/H264 video encoding supports up to 1080P/I @60fps.
- AES256 encryption is adopted.
- Non-line-of-sight high-speed mobile transmission is supported. (Up to 800km/hour, support UAV Drone video download link)
- Support to configure the center frequency, 无线带宽, transmission stream, and so on parameters. (How to Configure?)
Transmitter Input Output
AV input interface:
SD input interface, 4PIN 1.5mm pitch socket, audio support Mic in or Line in input (specified at the factory before shipment). PAL or NTSC format can be set through the parameter panel. (How to change PAL / NTSC video format?)
| 别针 | description |
| AL | audio input Left channel |
| 增强现实 | audio input Right channel |
| 接地 | 信号地 |
| 的 | 模拟视频输入 |
Configuration Interface:
Configuration serial port (控制串口), 4PIN 1.5mm pitch socket, TTL 3.3V电平. The 5V signal is used to supply power to our 参数配置板.
数据接口:
One-way transparent data serial port (数据串口), the serial port data will be unidirectionally transmitted to the data serial port of the corresponding receiver through the COFDM wireless link. 3PIN 1.5mm pitch socket, the default shipment is TTL 3.3V level, and it can also be specified as a standard RS232 level serial port when shipped.
发射器规格
| 界面 | |
| 高清视频输入 | Standard HDMI Interface |
| SD video input | 4PIN 1.5mm pitch connector (CVBS Analog Audio Video Input) |
| One-way transparent data transmission serial port | 3PIN 1.5mm pitch connector, the default shipment is TTL3.3V level. The standard RS232 level can also be optional before shipment. |
| Configure Serial port | 4PIN 1.5mm pitch connector, TTL3.3V. It can be connected to our 参数配置板, and can also be connected to a PC or another host computer |
| 电源输入 | XT30PW-M 连接器 (12V 电源) |
| 天线接口 | SMA male thread inner hole |
| Wireless modulation transmission | |
| Wireless modulation | COFDM图传 |
| IFFT模式 | 2K |
| 无线带宽 | 1MHz~8MHz Adjustable, 1千赫兹步长 |
| 前向纠错 | 1/2, 2/3, 3/4, 5/6, 7/8 |
| 保护间隔 | 1/32, 1/16, 1/8, 1/4 |
| 星座 | QPSK, 16QAM, 64QAM |
| Wireless Code stream | 0.5Mbps to 31.67M基点 （bites per second） |
| Working frequency Band | Optional working frequency band:
300～360MHz; 350～400MHz; 450～500MHz; 520～560MHz; 580～620MHz; 680～720MHz; 820～860MHz. Other working frequency bands between 200~860MHz can be customized. The center operating frequency is configurable, with a step of 1KHz. |
| 发射功率 | 1W (30分贝) or 2.5W (34分贝) 选修的 10-watts or 20-watts to support longer range and stronger signal |
| Audio and Video processing | |
| support video input | default single-channel video input encoding transmission: HD or SD. Video input is automatically detected after power is on. If connected at the same time, the device defaults to the preferred HDMI input, and can also be changed to the preferred AV input.
Optional dual video input simultaneous encoding and transmission. |
| Supported video formats | 1080@60P, 1080@50P, 1080@30P, 1080@25P, 1080@24P, 1080@60I, 1080@50I, 1080@30I, 720@60P, 720@50P, 720@30P,
720*480 60我(NTSC), 720*576 50我(朋友) |
| Video Encoder | H265 or H264 |
| 音频输入 | HDMI embedded audio or analog CVBS Right / Left Audio Input |
| 音频格式 | 亚克力, 16少量, 立体声, 32千比特每秒 |
| Encryption and Decryption | AES256 |
| Dimension | 10.5*5*2.7厘米 |
| Weight | <140 克 |
| 电源
功耗 |
DC 12V power supply (11~13V)
1W PA power amplifier: the power consumption is less than 15W; 2.5W PA power amplifier: the power consumption is less than 23W. |
| 延迟 | H265: 0.2~0.3 second; H264: 0.05-0.13 第二 |
Transmitter Dimension
Wireless Video Transmission Receiver
Receiver Advantage
- HD video COFDM wireless receiver with HDMI/CVBS/Ethernet/USB output interface
- 融合的 实时传输协议 server that allows video streaming over Ethernet for remote decoders. (默认, 实时传输协议://192.168.0.215/testStream ; port number should be 554, 不是 8080) RTSP streaming is available only after a valid video input is detected and the transmitter–receiver link is established. How to set RTSP player?
- Allows remote Android device decoders to stream video over USB. (Splayer Android APK V5.0_2017)
- Supports displaying character strings on the video display screen alongside the video in OSD mode.
Receiver Feature
- Dual diversity Antenna 接收
- Supporting working frequency band:160兆赫~860兆赫, the center operating frequency can be configured;
- Wireless bandwidth can be configured;
- Dual antenna receiving sensitivity -100±1数据库管理 (四相移键控8MHz);
- 无线接收状态信息 (eg Received signal strength, 空中接口速率, data bit rate, 工作频率, 无线带宽, ETC。) can be selected to be superimposed or not displayed on the video screen via the OSD switch button, and can also be output to the serial port (定制);
- 低延迟H264视频解码, with support for 1080P@60 decoding and playback;
- 音视频输出 (HDMI, CVBS, USB, and Ethernet interface output at the same time):
- HDMI type A port audio and video output
- CVBS (lotus head) AV音视频输出
- USB port output Video stream to mobile phone/tablet for decoding and display
-
Ethernet RJ45 output Interface for living stream, RTSP player support
-
Support AES256 decryption video reception
-
视频录制 via TF card or USB disk is supported. （You can only choose one of the two, USB or SD card, and remember to format it into FAT32 format.）
-
提供 1 serial port for one-way transparent data transmission;
-
Provide a serial port for parameter configuration for working settings (such as central working frequency, 无线带宽, and receiving decryption password);
-
电源, 6～15V,
-
工作功耗: 230毫安@12V
-
Dimensions: 11.5x9x3.4cm
-
Weight: 255 克.
Receiver Input Output
| 高清视频输出 | HDMI“A”型连接器 |
| 复合视频输出 | RCA连接器 |
| 音频输出 | 嵌入式 HDMI 和 RCA 连接器 |
| 射频输入 | Two SMA |
| 电源输入 | 3PIN PH2.54mm 连接器 |
| USB主机 | A型连接器 |
| TTL串口数据(3.3V) | 3PIN PH1.25mm 连接器 |
| TTL串口控制(3.3V) | 4PIN lockable Connector (从左到右, TX, 接收, 接地, 5V) |
| Ethernet | RJ45 |
| TF卡 | TF卡插槽 |
| OSD键 | OSD 显示切换键 |
| 录音键 | Switch key for Video recording |
COFDM Video Transmitter and Receiver full-set
常见问题解答
Please use the parameter configuration board to check.
More operation guide for the parameter configuaration board, 请看 https://ivcan.com/parameter-configuration-panel-quick-operation-guide/
- Keep the antenna as high as possible because the ground absorbs the signal.
- Try to be at point B instead of point A. Because according to the transmission principle of the antenna, it propagates in an umbrella shape. The signal at point A is often very weak.
- The Transmitter frequency range can change to 1.4G or 1.34G.
- The receiver frequency range only supports 170-860Mhz, if you need 1.4G or 1.34G, you need to install a frequency down converter block at the receiver.
- 我们的 frequency down converter block is here. Maybe you can contact the below other supplier.
- Above parameter LO frequency choose 1000MHz.
This model COFDM wireless video transmitter support video source input connector, HDMI, CVBS 关闭, SDI, IP ethernet RJ45, and AHD, please tell us what video type you need before delivery.
射频: 338.0兆赫带宽: 4.0MHz; RF indicates the central operating frequency point, BW indicates the operating bandwidth
四相相移键控CR: 2/3 胃肠道: 1 /16 ; QPSK is the modulation method, CR is the convolution code rate, GI is the guard interval
空气: 3.90Mbps ; AIR是空中接口速率
可变比特率: 3.05Mbps AES 关闭 ; VBR是视频比特率, AES OFF 表示不加密
信号1: 27 信号2: 22 ; SIG1 refers to the received signal strength of the antenna near the HDMI port, SIG2 refers to another antenna
误码率1: 0.14% 误码率2: 100.00% ;ber1 refers to the receiving bit error rate of the antenna near the HDMI port, ber2 refers to another antenna
录制关闭 无存储 ; REC OFF 表示不存储视频
请检查这里.
There are COFDM wireless video transmitter boards, PA power amplifiers, and cooling fans.
From some UAV customers have measured 50km when they are testing, and the height of the UAV is about 300 米.
- If the transmitter modifies the wireless parameters such as constellation, 胃肠道, CR, and BW, the receiver must be restarted to lock and display normally.
- Another possibility is that your transmitter modifies the constellation parameters through the AT command, but the parameters are not actually written into the baseband board. You need to restart the transmitter board to confirm.
- Our one-way cofdm video transmission is not designed to consider your current usage scenario (fast switching frequency).
- This may not work, the delay of TX switching frequency involves many aspects, such as the delay of the encoder board itself (currently the main program processes parameter changes in a cycle of about 1 第二), and the processing delay of the baseband board, so add It takes about 2 second to switch. The processing delay of the encoder board can be squeezed to within 1 second by modifying the firmware, but the delay of the baseband board is not easy to squeeze, and the most important thing is that it is not easy to update the firmware (you must return to the factory to use our equipment to update the firmware).
- Summarize:
The encoder board may be able to reduce the processing delay of 1 second by updating the firmware, but the delay of the baseband board cannot be squeezed, so the final optimized delay is about 2 秒.
- Our Vcan1726 can support one HDMI and one auxiliary CVBS audio and video input at the same time, which can be connected to external microphones and power amplifiers.
- The current software can only support one sound source, which can be modified and selected through the parameter configuration board, HDMI sound, or CVBS sound, and cannot handle two channels of audio at the same time.
- 因为COFDM是一种单向传输, both video and audio can only be transmitted in one direction. 从发射器到接收器, the audio cannot have a two-way intercom, just like an ordinary radio, which can only broadcast in one direction.
The UART command is here.
Set Input Sources Command (switch HDMI / CVBS输入)
| 格式 | ATSU$(vin),$(ain)_ 例子: ATSU0,1 _ |
| 范围 | 1. Video input selection VIN: 0 let the system detect; 1 force CVBS input; 2 force hdmi/SDI input 2. Audio input selection AIN: 0 let the system detect; 1 force analog input |
| 使用 | Used to meet specific application requirements (例子: HDMI/SDI input video, MIC input audio) |
| Return Value | 例子: ATSU0,1_ ATSU0,1 OK |
| 评论 | setting command, power-off save. |
Get Gain Audio Input
| 格式 |
ATSAIS(lin),(ain vol)_ 例子:ATSAI0,50_ |
| 范围 |
Analog audio input mode selection lin: 0 mic in;1 line ine Analog audio input volume control ain vol: mic in recommended 50; line in recommended 0 |
| 功能 | Used to set analog audio input parameters |
| 反馈 | 例如: ATSAl0,50_ ATSAI0,50 ok |
| 评论 |
Set the command and save it after power off. ain vol setting range [-78,80] |
Yes, if you need it working standard DVB-T protocol, please tell us, we will change a special firmware for you.
It supports three working model
- Standard DVB-T protocol (normal DVB-T receiver can get the transmitter signal, no encryption and decryption function)
- COFDM protocol (support TX encryption and RX decryption function, not super low latency model, support H265 and H264 encoding )
- COFDM H.264 low latency protocol (support TX encryption and RX decryption function, support low latency model, only H264 编码)
How to change COFDM module working mode?
COFDM Video Transmitter Frequency customize to 664Mhz
How to upgrade the COFDM wireless video receiver newe firwmare
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