攝像機無線視頻發射器和接收器, HDMI高清H265 264 編碼器 1W/2.5W PA 1080P60 Vcan1726

Please use the parameter configuration board to check.

More operation guide for the parameter configuaration board, 請看 https://ivcan.com/parameter-configuration-panel-quick-operation-guide/

1. Keep the antenna as high as possible because the ground absorbs the signal.
2. 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.

1. The Transmitter frequency range can change to 1.4G or 1.34G.
2. 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.
3. 我們的 frequency down converter block is here. Maybe you can contact the below other supplier.
   1. https://www.ettus.com/product-categories/rf-daughterboards/
   2. https://www.vislink.com/product/l3025-down-converter/
   3. https://www.kuhne-electronic.com/funk/en/shop/leistungsverstaerker/prof-heat-sinks/KU+LNC+1215+C+PRO+Down+Converter/?card=1839
4. Above parameter LO frequency choose 1000MHz.

This model COFDM wireless video transmitter support video source input connector, HDMI, CVBS AV, SDI, IP ethernet RJ45, and AHD, please tell us what video type you need before delivery.

射頻: 338.0兆赫頻寬: 4.0兆赫; RF indicates the central operating frequency point, BW indicates the operating bandwidth
四相相移鍵控CR: 2/3 胃腸道: 1 /16 ; QPSK is the modulation method, CR is the convolution code rate, GI is the guard interval
空氣: 3.90Mbps的 ; AIR是空中接口速率
可變位元速率: 3.05Mbps AES 關閉 ; VBR是視訊位元率, AES OFF 表示不加密
SIG1: 27 SIG2: 22 ; SIG1 refers to the received signal strength of the antenna near the HDMI port, SIG2 refers to another antenna
ber1: 0.14% ber2: 100.00% ;ber1 refers to the receiving bit error rate of the antenna near the HDMI port, ber2 refers to another antenna
錄製關閉 無存儲 ; REC OFF 表示不儲存視頻

請檢查這裡.

There are COFDM wireless video transmitter boards, PA power amplifiers, and cooling fans.

當然

請檢查以下連結

適用於無人機無人機無線視訊發射器和接收器的 COFDM 中繼中繼器模組 Vcan1870

From some UAV customers have measured 50km when they are testing, and the height of the UAV is about 300 米.

是, 支援.

COFDM Video encoder modulator transmitter module 3.5G and 4G test result.

1. If the transmitter modifies the wireless parameters such as constellation, 胃腸道, CR, and BW, the receiver must be restarted to lock and display normally.
2. 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.

1. Our one-way cofdm video transmission is not designed to consider your current usage scenario (fast switching frequency).
2. 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).
3. 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.

1. 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.
2. 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.
3. Because COFDM is a one-way transmission, both video and audio can only be transmitted in one direction. From the transmitter to the receiver, 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 input)

是, 它支持.

Please check the details at the below link.

OSD display function on COFDM receiver.

是, 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

1. 標準DVB-T協議 (normal DVB-T receiver can get the transmitter signal, no encryption and decryption function)
2. COFDM協議 (support TX encryption and RX decryption function, not super low latency model, support H265 and H264 encoding )
3. COFDM H.264 低延遲協議 (support TX encryption and RX decryption function, support low latency model, only H264 encoding)

How to change COFDM module working mode?