COFDM high-definition digital wireless image transmission development kit adopts COFDM modulation technology，Fully realized the function of high-definition digital wireless image transmission，For users to learn、Evaluate and test COFDM image transmission technology。The development kit consists of two parts: transmitter and receiver。Transmitter input digital video signal through HDMI interface，COFDM modulation after H.264 encoding compression(Realize the baseband function)，Then it is converted into an analog signal by the DAC and sent to the RF Transmitter and then passed through the PA(power amplifier) Amplify the signal to the antenna for transmission。Sihid COFDM wireless image transmission development kit transmitter includes two circuit boards, SEM9363 encoding modulation board and D-PA2400A power amplifier board。The receiving end includes FC2400A down conversion board and COFDM Demodulator module，Send the demodulated digital video signal to the mobile phone through the USB interface(or PC、flat)Do H.264 decompression playback。
The transmitting end：
COFDM HD Digital Wireless Video Transmission Development Kit Features：
- working frequency：2.400GHz ~ 2.483GHz
- The transmitter can be set to work in single PA and single antenna mode，It can also be set to work in dual PA and dual antenna mode
- Single PA transmit power：23dBm(200mw)，Adjustable output power
- The working channel can be set within 8 channels
- Channel bandwidth can be set：6M or 8M
- Modulation constellation can be set：QPSK、QAM16、QAM64
- Convolution code rate is configurable： 1/2, 2/3, 3/4, 5/6, 7/8
- COFDM modulation guard interval is configurable：1/4，1/8，1/16，1/32
- Transmitter video input：Micro HDMI interface
- video compression format：H.264
- Image clarity：[email protected]、[email protected] backward compatible，Adaptive input digital video source
- Configurable convolutional coding ratio：4.3~31.7Mbps adjustable
- The transmitter provides a TF card interface，Support recording and transmission function
- Transmitter provides OSD interface
- The transmitter provides a control serial port
- Support AES encryption
- Transmitter power supply voltage 5.5V~16V，Current [email protected]
- receiver sensitivity：8-96±1dbm at MHz，6-97±1dbm at MHz
- Receiver provides Micro USB interface(USB slave)，The demodulated video can be connected to devices such as notebooks, tablets, and mobile phones for H.264 decoding and playback。
- Receiver power supply voltage：5V(Power supply via USB interface)
- system delay：<200ms(When decoding the display under Windows，HDMI input from transmitter to Windows decoding display on receiver)
- Transmission distance：1to 3 km
- Support multi-point receiving
- The SEM9363 board at the transmitter provides a debugging serial port、JTAG debug port
- The FC2400A board at the receiving end provides a debugging serial port。
SEM9363 encoding modulation board(version B)：
Sihid SEM9363 wireless digital image transmission coding modulation board inputs high-definition digital video through HDMI interface to Hi3516A processor for H.264 compression coding，The compressed video signal realizes COFDM channel modulation through FPGA，Then converted to analog signal modulation by AD936x and sent out。For user convenience，SEM9363 board version B will debug the serial port of Hi3516A、FPGA JTAG debug port、OSD interface、control serial port、Signals such as power supply are concentrated to J30 and transmitted to the external interface of D-PA2400A board。
D-PA2400A power amplifier board：
D-PA2400A power amplifier board contains two independent RF power amplifier modules，Amplify and output the RF signal output by SEM9363A。J3 interface of D-PA2400A board and SEM9363 board(version B)connected to the J30 interface，Debug serial port of Hi3516A on SEM9363 board、FPGA JTAG debug port、OSD interface、control serial port、Signals such as power supply are concentrated on the external interface on the board edge of D-PA2400A。The two RF outputs of the SEM9363 board are respectively connected to the two RF input interfaces of the D-PA2400A board through IPEX cables。Working indicators of each power amplifier module on the D-PA2400A board：
- working frequency：2.400GHz ~ 2.483GHz
FC2400A down conversion board：
The FC2400A down conversion board converts the received 2.4GHz RF signal into a 250MHz signal，Then through the channel demodulation module, COFDM demodulation is converted into a digital signal，Finally, the demodulated digital video signal is sent to the mobile phone through the USB interface(or PC)Do H.264 decompression playback。The RF output of the FC2400A board is connected to the RF input of the COFDM Demodulator module through the radio frequency line。
- working frequency：2.400GHz ~ 2.483GHz
- RF interface：SMA antenna interface
- Receiving sensitivity：8-96±1dbm at MHz，6-97±1dbm at MHz
- 8Bit parameter setting switch(Reception and demodulation parameter setting)
- Micro USB interface(USB slave)，Connect the demodulated video to devices such as notebooks, tablets, and mobile phones for H.264 decoding and playback。
- COFDM transmit interface：5V
- board size：86connect the demodulated video to laptops
COFDM HD Digital Wireless Video Transmission Development Kit Shipping List：
- Sihid COFDM 2.4GHz 200mw Dual Antenna Transmitter
- Aluminum shell
- Built-in SEM9363 board
- Built-in D-PA2400A board
- 2.42 GHz transmitting antennas
- Micro HDMI(Type D)1 cable(Used to connect aerial camera)
- 1 OSD cable
- Control serial port connection line 1
- 1 serial debugging line
- JTAG debug port connection line 1
- 1 power cable
- 1 TF card(Built-in software and documentation, etc.)
- FC2400A 2.4GHz receiving module
- FC2400A board
- COFDM Demodulator module
- 2.41 GHz receiving antenna
- 1 USB cable
- 1 SWD debugging line
- hardware design files
- SEM9363 board circuit schematic、Layout source file
- D-PA2400A board circuit schematic diagram、Layout source file
- FC2400A board circuit schematic diagram、Layout source file
- Hardware User Manual
- FPGA pin function definition
- See the Sihid COFDM wireless video transmission development kit software function list above for details
- cross compiler
- Software Development User Guide
- Hi3516A serial programming tool、COFDM Demodulator module windows driver installation file
- Technical Services：
Provide technical support services within 1 year after sales，Including the hardware schematic diagram/Layout Review service for customers to develop their own products based on the Sihid COFDM high-definition digital wireless image transmission development kit technical solution、Software debugging service。when necessary，Engineers can be arranged to assist in debugging(Travel expenses are borne by the user)。
Sihaida can customize digital high-definition wireless image transmission products of different specifications according to customer application needs：
- Other working frequency bands and RF power can be supported by designing PA modules with different specifications；
- The existing design can be changed to add other video input and output processing interfaces，Such as transmitter AV input、USB input、SDI input，Receiver HDMI output、SDI output, etc.；
- IP protocol low-latency long-distance broadband data transmission, etc.。
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FAQs about Wireless Video Transmitter and Receiver
Our wireless video transmitters have these types of video input interfaces: HDMI 1080P and 4K HDMI, CVBS composite, SDI, AHD, IP Ethernet, BNC, or tell us what type do you need, our engineer will modify to meet your demand.
Our transmission distance can be adjusted by adding power amplifiers. At present, the main ones are 15km, 30km, 50km, 80km, 100km , and 150km, which depend on the needs of customers.
Of course, the transmission distances listed above are all within LOS the line-of-sight range. If there are obstacles between the transmitter and the receiver, NLOS (the non-line-of-sight), the transmission distance is greatly reduced, only 1km or 2km, depending on the number of intermediate obstacles and the local wireless environment.
One-way means, We can only transmit and download video or data from the wireless video transmitter to the receiver in one direction, and we cannot upload video or data from the receiver to the transmitter. This type is also called simplex.
Two-way means that, not only we can download video or data from our wireless transmitter to the receiver, but also we can upload the video or data from the receiver to the transmitter. This is very suitable for operating drones. You can not only see the real-time video transmitted from the drone, but also upload the command to control the drone or the command to control the PTZ camera to adjust the angle to the transmitter. This can operate simultaneously. This type also named half-dulpex or full-duplex.
Please check the details at the below link. https://ivcan.com/request-a-quote-of-wireless-video-transmission/#simplex
Most Wireless video transmitters now support AES128 or AES256 bit encryption and decryption, depending on which model you choose. Please contact us to verify.
The frequencies of both the wireless video transmitter and the wireless video receiver can be modified. Users need to purchase additional parameter configuration boards.
However, considering that the corresponding power amplifier and antenna are already fixed within a certain range when the goods are sent out. If the user adjusts the frequency of the transmitter, the corresponding power amplifier, transmitter antenna and receiver antenna should also be modified to the same frequency, and these users need to be prepared. If not, it will cause the frequency of the wireless video transmitter to be different from the frequency of the antenna, making reception difficult. So please be sure to inform the correct frequency you need before placing an order.
If it is for security or confidentiality, you can use the encryption and decryption functions of the transmitter and receiver, which can ensure that your video transmission is private. .
Yes, all our product parameters can be customized according to customer's needs. If you have a special request, please let us know via the link below.
- Change the place of the receiver to avoid potential local interference from strong magnetic environments.
- Ensure that the antennas on both the transmitter and receiver are vertical.
- Please raise the antennas of the transmitter and receiver to maintain a certain height difference.
- Please look around to ensure that there are no obstacles between the transmitter and receiver.
- Change the orientation of the receiver antenna.
- If it doesn't work, try moving the receiver to be near the transmitter's position to see if it exceeds the effective wireless transmission distance.
- Or consider adding a relay of the transmitting between the transmitter and receiver.
- The antenna should be as high off the ground as possible, as the ground will absorb the transmitted signal.
Of course, we also understand that wireless video transmission transmitters and receivers are very expensive. You are far away from the China factory. and hope that the goods you receive are fit for the best performance.
If you pay special attention to a specific parameter or function, we can take some test videos based on the features you want to see, please feel free to contact us. It won't be shipped to you directly without your approval.
To test the delay of the wireless video transmitter and receiver, we need to do two tests.
The first is to test the delay from the camera to the display.
The second is the camera, plus the display plus the wireless image transmission transmitter and the delay of the receiver.
Subtracting the two test results is the real delay of the wireless video transmitter and receiver.
As a professional long-range HDMI wireless video transmitter and receiver supplier and manufacturer in China Shenzhen, we produce the best wireless video transmitter and receiver for many years, and we got a good reputation and best reviews.
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The best budget wireless broadcast video transmitter and the receiver have many applications, for 4K tv, CCTV security camera, vehicle backup camera, PTZ video camera kit, battery-powered, computer, sony camcorder, wifi video conference system, CANON DSLR, UAV drone, pc computer laptop, projector, in-car, iPhone iPad, live streaming, GoPro sports camera, raspberry pi, Xbox.
The full HD video, audio, data link smallest 1080P wireless video transmitter and the receiver has many input and output connectors, like AV composite CVBS, HDMI, SDI, BNC, VGA, USB.
The wireless video transmitter sender TX RX frequency has 170-806Mhz, 1.2ghz, 2.4G, 5.8G, lowest but not zero latency. In order to support longer distances, the power amplifier has 10w, 20watts, and even 30W.
What is a best buy FHD wireless video transmitter at a cheap price? It should consider your details requirement, choose suitably, not expensive, if you have any doubt, please fulfil the request a quote form, our engineer will offer you a solution.