1350-1400MHz 20W PA COFDM SDI Video không dây và máy thu

Mục lục
Đặc tính
- Tần số hoạt động có thể được tùy chỉnh. The frequency range of the transmitter is 70~2500Mhz, and the frequency range of the receiver is 170~860Mhz. Operating frequencies exceeding this range require down-conversion.
- The frequency range required by the customer for this set of equipment was 1350-1400Mhz, so the receiver is a diverse dual-antenna reception, so two down-converters were added. (1350-1400Mhz input, output 370Mhz, LO 1000Mhz)

phụ kiện

Hỏi đáp
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Q: What is this 1.4GHz 20W PA COFDM SDI wireless video transmitter and receiver?
Một: It’s a professional tầm xa phát video không dây and receiver kit operating in the 1350-1400Tần số MHz Phê duyệt cho 4G LTE (Other frequencies can also be customized.), using robust điều chế COFDM đáng tin cậy SDI, CVBS, hoặc là HDMI AHD video input truyền tải, với HDMI, CVBS và Ethernet RJ45 RTSP UDP output. Nó có tính năng a lập trình được 10 Watts hoặc 20 Bộ khuếch đại công suất Watts (Other powers can also be customized).
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Q: What video inputs does the transmitter accept?
Một: Các phát video không dây hỗ trợ Đầu vào video SDI, Đầu vào video CVBS (tổng hợp), and other standard HDMI AHD video input.
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Q: What outputs does the receiver provide?
Một: Các COFDM nhận offers both đầu ra HDMI for modern displays and Đầu ra CVBS (tổng hợp) for legacy equipment compatibility, Các ethernet RJ45 networking output also support to connect computer via RTSP or UDP protocol video stream.
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Q: How much power does the transmitter output?
Một: Các Bộ khuếch đại công suất PA Là tùy biến, offering either 10 watt hoặc là 20 watt Công suất ra, selectable via configuration tools for range or power consumption needs. (Other powers can also be customized).
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Q: What frequency band does it use?
Một: It operates specifically within the 1350-1400Tần số MHz Phê duyệt cho 4G LTE (also referred to as 1.4tần số G). (Other frequencies can also be customized.),
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Q: What modulation does it use for reliable video?
Một: Nó sử dụng điều chế COFDM, renowned for excellent performance in non-line-of-sight (NLOS) and multipath environments, Làm cho nó lý tưởng cho đường truyền tầm xa.
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Q: How is the system configured?
Một: Configuration is done via a dedicated Công cụ cấu hình tham số or using Tại các lệnh thông qua CFG port, Web UI management for video encoder parameter setting.
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Q: Does it support remote configuration?
Một: Vâng, parameters like frequency, băng thông, quyền lực, mật khẩu, Thu được, vv, can be set using the programmer tool, Bảng cấu hình tham số or by sending Tại các lệnh thông qua CFG port.
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Q: What is the TTL data port used for?
Một: Các TTL data port allows for TTL data transmission of flight control in the drone air unit alongside video. It can be used for remote control, từ xa, triggering, or sending/receiving low-bandwidth serial data (một chiều on TX typically).
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Q: Is the video transmission bidirectional?
Một: Không, this system is designed for one-way transmission of video and data from the transmitter to the receiver. Or please check our other models supports two-way transmission.
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Q: What kind of range can I expect?
Một: Phạm vi depends on terrain, ăng ten, and power setting. Với 20BẠN KHÔNG and good antennas, đường truyền tầm xa của 100-150+ km (Dòng nhìn) is achievable. COFDM aids in difficult environments.
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Q: How do I choose between 10W and 20W power?
Một: Default is 20W PA inside. Sử dụng Công cụ cấu hình tham số to set Gain, Một 3 dB reduction means the output is halved; so a reduction from 20W to 10W means a 3 dB reduction in gain. Chọn 10 watt hoặc là 20 watt trên Bộ khuếch đại công suất PA, please consider higher power extends range but consumes more battery.
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Q: Does it support low-latency video?
Một: Vâng, COFDM wireless video systems typically offer very độ trễ thấp (often sub-150ms), suitable for live monitoring and Drone UAV applications.
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Q: What antennas are recommended?
Một: Ăng-ten định hướng tăng cao (Yagi antenna, Flat Panel antenna) on the receiver and omnidirectional/semi-directional antennas on the transmitter are recommended for maximizing đường truyền tầm xa performance at 1.4tần số G.
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Q: Is the 1350-1400MHz band license-free?
Một: Licensing varies significantly by country/region. Các 1350-1400Tần số MHz band is KHÔNG PHẢI globally license-free. Luôn kiểm tra các quy định của địa phương before operation. A license is often required, đặc biệt là đối với 20W quyền lực.
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Q: Can I change the operating frequency?
Một: Vâng, the operating tần số trong vòng 1350-1400MHz range can be precisely set using the Công cụ cấu hình tham số hoặc là Tại các lệnh.
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Q: How do I update the firmware?
Một: Firmware updates are typically performed using the programmer tool software connected to the device’s configuration port (VÍ DỤ., USB or TTL serial).
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Q: What is the purpose of the programmer tool?
Một: Các programmer tool (parameter configuration tool board) is an extra small LCD screen with menu board used for easy Cấu hình tham số, monitoring status, and setting Tại các lệnh profiles.
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Q: Can I control the transmitter remotely via data?
Một: Không, basic control functions (tần số, băng thông, mật khẩu, gain ect) be connected directly via the CFG configuration port or using predefined Tại các lệnh sent from the computer serial port tool.
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Q: What voltage does the TTL data port use?
Một: Các TTL data port operates at standard 3.3V TTL logic levels. Ensure any connected device is compatible.
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Q: Does the receiver have a data output port?
Một: Tiêu biểu, các TTL data port is on the transmitter and receiver for one-way data transparent transmission. The data input from the data port on the transmitter will be completely output to the data output port of the receiver. -
Q: What is the video resolution supported?
Một: While dependent on the specific model, systems like this often support up to 1080p30 for SDI input và đầu ra HDMI. CVBS input/output is standard definition (SD).
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Q: Is it suitable for drone (UAV) sử dụng?
Một: Vâng, các 1.4tần số G, COFDM robustness, độ trễ thấp, và đường truyền tầm xa capabilities make it a popular choice for professional drone video downlink hệ thống, especially with the TTL data port for telemetry.
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Q: How is audio handled?
Một: Audio is typically embedded within the SDI input or carried alongside the CVBS/AV video input (usually as part of the composite signal). It will be decoded and output via the receiver’s đầu ra HDMI and potentially the Đầu ra CVBS.
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Q: What power supply does the transmitter need?
Một: Transmitters with 10W/20W PA typically require a robust DC input, often in the range of 24V, capable of supplying several amps (especially at 20W Đầu ra RF). -
Q: What power supply does the receiver need?
Một: Receivers usually require a standard DC input, often 12V, with lower current requirements than the transmitter.
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Q: Does it work in urban environments?
Một: Vâng, điều chế COFDM is excellent at handling multipath interference common in môi trường đô thị, making this video không dây system suitable for city use.
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Q: Is it weather resistant?
Một: Professional units often feature rugged, weather-resistant casings. Check the specific IP rating for details on suitability for outdoor or harsh environments.
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Q: Can I use multiple transmitters with one receiver?
Một: This requires a receiver capable of scanning or multiple receivers. Tiêu biểu, each TX-RX pair operates on a unique frequency. When multiple transmitters use similar frequencies, there will be interference, and a bandpass filter is required. When multiple transmitters use a larger frequency range, the receiver’s antenna range increases, and the sensitivity decreases, which may result in a shorter transmission distance.
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Q: Can I use multiple receivers with one transmitter?
Một: Vâng, a single phát video không dây signal can typically be received by multiple COFDM receivers tuned to the same frequency.
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Q: Độ trễ điển hình là gì?
Một: COFDM wireless video systems like this are designed for độ trễ thấp, often in the range of 100-250 mili giây, Tùy thuộc vào cấu hình, Xử lý tín hiệu, camera and monitor.
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Q: Does it support HD video over SDI?
Một: Vâng, các Đầu vào video SDI typically supports standard HD-SDI formats (like 720p, 1080tôi, 1080p).
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Q: Can I send telemetry data?
Một: Vâng, các TTL data port trên phát is specifically designed for sending TTL data transmission like telemetry (VÍ DỤ., GPS, độ cao, Tình trạng pin) alongside the video stream.
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Q: How do I connect the TTL data port?
Một: Các TTL data port usually has pins for Ground (GND), Chuyển giao (TX), and Receive (RX). Connect it to a compatible serial port (UART) on your controller/sensor using a 3.3V TTL level compatible interface.
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Q: What baud rate does the TTL port use?
Một: The baud rate for the TTL data port (VÍ DỤ., 9600, 19200, 57600, 115200) is usually configurable via the Công cụ cấu hình tham số hoặc là Tại các lệnh.
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Q: Are AT commands well documented?
Một: Professional systems should provide comprehensive documentation for the Tại các lệnh, detailing syntax, thông số, and functionality for configuration and control. Lệnh UART AT cổng nối tiếp
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Q: Can I integrate this with my existing control system?
Một: Vâng, integration is possible via the TTL data port (sử dụng Tại các lệnh or custom data) and potentially relay/GPIO signals (if available), facilitated by the Công cụ cấu hình tham số.
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Q: Is there encryption for the video signal?
Một: Many professional COFDM systems offer AES-128 encryption. Check the specifications or Công cụ cấu hình tham số options for security settings.
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Q: How do I set the encryption key?
Một: Encryption keys are typically set using the Công cụ cấu hình tham số or via specific Tại các lệnh, ensuring both TX and RX share the same key.
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Q: What is the bandwidth of the RF channel?
Một: COFDM systems often use configurable bandwidths like 2MHz, 4MHz, hoặc 8 MHz. This affects data rate and robustness. Set it via the Công cụ cấu hình tham số.
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Q: Can it transmit through obstacles?
Một: Thanks to điều chế COFDM, it performs significantly better than analog or simpler digital systems in Non-Line-Of-Sight (NLOS) conditions and when penetrating light obstacles (tán lá, bức tường), hỗ trợ đường truyền tầm xa.
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Q: What’s the difference between the programmer tool and AT commands?
Một: Các programmer tool is an extra LCD screen + menu board for easy setup and monitoring. Tại các lệnh offer a text-based interface for configuration and control via the TTL data port, suitable for automation and integration. -
Q: Does the receiver output a clean HDMI signal?
Một: Vâng, các COFDM nhận is designed to provide a stable, low latency HDMI output signal compatible with standard monitors and recorders.
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Q: Is the CVBS output active simultaneously with HDMI?
Một: Tiêu biểu, Vâng. Cả hai đầu ra HDMI và Đầu ra CVBS are usually active concurrently on the receiver.
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Q: How do I mount the antennas?
Một: Use high-quality coaxial cables (VÍ DỤ., LMR-400 for longer runs) and mount antennas (phát & người nhận) as high and clear as possible. Directional antennas on the RX should be pointed towards the TX.
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Q: What is the typical power consumption at 10W vs 20W?
Một: Power consumption is significantly higher at 20W RF output compared to 10W. Expect the 20BẠN KHÔNG to draw 50-100% more DC power than the 10W cài đặt. Check the datasheet.
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Q: Nó có bảo vệ quá nhiệt không?
Một: Professional transmitters with high-power Bộ khuếch đại công suất PA usually include thermal protection, potentially reducing power or shutting down if overheating occurs.
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Q: Can I remotely reboot the transmitter?
Một: This depends on the specific implementation. Some systems support a remote reboot command via the TTL data port sử dụng Tại các lệnh.
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Q: Where can I buy this wireless video system?
Một: Search for distributors or manufacturers specializing in long-range COFDM wireless video transmitters, 1.4G frequency systems, và SDI/HDMI video links. Look for models matching the 10W/20W PA, TTL data port, và Cấu hình tham số đặc trưng. Or click contact us to get the further support.
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Q: Hỗ trợ kỹ thuật có sẵn không?
Một: As a reputable manufacturer, we offer technical support for configuring the Công cụ cấu hình tham số, sự hiểu biết Tại các lệnh, setting up the TTL data port, and troubleshooting COFDM transmission vấn đề.

Q: I need a long-range, low-latency system for NLOS operation in dense forest terrain. Do you have a test video?
Một: Because different obstacles, terrain structures, and forest densities cause very different transmission results, it is not possible to create a test video that accurately simulates every customer’s real usage environment.
To recommend a suitable solution, we need to understand your exact application scenario:
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Are the transmitter and receiver fixed in place (VÍ DỤ., Giám sát lửa rừng, wildlife surveillance), or are both mobile?
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Are they located inside the forest, or can the antennas be placed above the canopy?
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How high can the antennas be mounted?
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How much NLOS obstruction (cây, đồi, các tòa nhà) will the signal encounter?
In dense forest or enclosed environments, wireless signals cannot diffract effectively, and the usable transmission distance becomes very short. For NLOS and long-range applications, customers typically choose 10W–20W RF power, không phải 0.5W–1W, because higher power significantly improves penetration and link stability.
Once we understand your real deployment environment, we can provide a suitable model recommendation and expected performance.



iVcan.com –
I recently used the 1350-1400MHz 20W PA COFDM SDI wireless video transmitter and receiver, và tôi cực kỳ ấn tượng với hiệu suất của nó. The signal quality is exceptionally stable even over long distances, and the dual-antenna diversity reception ensures minimal interference and zero signal dropouts. Thiết lập là đơn giản, and the included down-converters made it compatible with our customized frequency range effortlessly. Video transmission is crystal clear, latency is very low, and the 20W PA output provides excellent coverage. Tổng thể, this is a highly reliable and professional wireless video solution for any demanding application.