COFDM беспроводной видеопередатчик HDMI cvbs входной мини модуль модулятора междугородный fpv БПЛА 905t

COFDM Wireless Video Transmitter HDMI CVBS input

New COFDM Wireless Video Transmitter HDMI CVBS input mini modulator module long-distance FPV UAV

Беспроводной видеоприемник COFDM COFDM-905R

 

High-definition digital wireless transmission transmitter COFDM-905T has a built-in encoder board, RCA COFDM modulation module, and small-size PA power amplifier module (changeable 1W, 2W, 5W, 10W), the whole machine uses CNC aluminum alloy housing, маленький размер, легкий, high transmission resolution, междугородний, низкая задержка.

Особенности

1. Supported audio and video input methods:
   1. Mini HDMI input (Цифровой)
   2. ВЫКЛ вход (CVBS Analog, видео, audio right, audio left)
2. Video input system support:
   1. Мини HDMI: 1080 60П, 1080 50П, 1080 30П, 1080 25П, 1080 60я, 1080 50я, 1080 30я, 720 60П, 720 50П, 720 30П, …, различные способы адаптации
   2. ВЫКЛ в: 720×480 60я (NTSC), 720×576 50я (ПАЛ), режим адаптивный
3. Кодирование видео: adopts H264 encoding technology and supports 1080P@60 at the maximum, backward compatible with other various resolutions and frame rate encoding.
4. The video encoding bit rate can be set through the serial port configuration and the default adaptive air interface rate.
5. COFDM-модуляция
   1. Configurable Convolutional Code Ratio: 1/2, 2/3, 3/4, 5/6, 7/8
   2. Configurable modulation method: QPSK/QAM16/QAM64
   3. режим ОБПФ: 2К
   4. Configurable guard interval: 1/4,1/8,1/16,1/32
   5. Configurable wireless bandwidth: 1MHz~8MHz adjustable, 1KHz stepping
6. Output transmit power amplifier configurable
7. Рабочая полоса частот: 160MHz~860MHz can be configured;
8. Максимальная мощность передачи: 1W or 2W;
9. Provide one-way transparent data transmission serial port;
10. Provides parameters for configuring the serial port and parameter configuration panel
11. AES-256 encryption transmission
12. Power supply: 10 ~ 13V, 12V best RF performance;
13. Потребляемая мощность: The power consumption of the whole unit is about 14W when the transmit power is 1W;
14. Общий размер: 74 * 55 * 24.6мм
15. вес: 135г

Примечание

When the COFDM-905T transmitter and COFDM-905T receiver form a point-to-point wireless video transmission system, the video delay indicator:
The three indicators of video delay, video bit rate, and air interface rate are mutual influence and mutual restraint. When the air interface rate is greater than 5 times the video code rate, the video delay is minimum. В этом случае, the actual test is that the video delay is about 60 milliseconds when the code is transmitted at 720P@60, и задержка видео примерно 130 milliseconds at 1080P@60. The delay refers to the delay from the HDMI video input at the transmitting end to the HDMI video output at the receiving end, без учета задержки фронтальной камеры передающей стороны (we measured the delay of a brand SLR camera at about 70 миллисекунды, and the delay of a famous brand sports camera at about 130 миллисекунды). For most application scenarios, the video delay is set to about 200 milliseconds by default.

When the COFDM-905T transmitter and the COFDM-905R receiver form a point-to-point wireless video transmission system, the transmission distance is:
The wireless transmission distance is related to many factors such as the test environment, ambient electromagnetic interference, occlusion conditions, air humidity, рабочая частота, пропускная способность беспроводной сети, and transmitting and receiving antennas. Actual test results: a customer test, unmanned aircraft-mounted transmitter to fly about 100 метров в высоту, set to 4M QPSK wireless bandwidth, 700MHz center operating frequency, 1W transmit power, transmitter antenna 3dBi around, Receiving double glass fiber antenna gain of about 10dBi, a distance of up to 16km (video smooth);

our own road test in Shenzhen, the launch end on the flyover, ordinary hose antenna (about 3dBi gain), 340MHz launch, QPSK 8M Bandwidth, a fiberglass antenna at the receiving end, and a Yagi antenna, о 2.2 meters high on the pole, 2.2 километрах отсюда, high-definition video smooth, a small number of high-rise buildings between the transmitter and receiver, the road visually about 20 degrees bending. Due to conditional restrictions, no further road tests were made.

Разъем

Размер

75 х 55 х 25 мм

Тест радиочастотных характеристик

Рабочая центральная частота 470 МГц, Усилитель мощности: 1W

Рабочая центральная частота 700 МГц, Усилитель мощности: 1W

Обновление

How to upgrade TX from 720P to 1080P?

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