Émetteur vidéo sans fil COFDM HDMI cvbs entrée mini module modulateur longue distance fpv uav 905t

COFDM Wireless Video Transmitter HDMI CVBS input

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

Récepteur vidéo sans fil COFDM COFDM-905R

 

High-definition digital wireless transmission transmitter COFDM-905T has built-in encoder board, RCA COFDM modulation module, small-size PA power amplifier module (changeable 1W, 2W, 5W, 10W), the whole machine uses CNC aluminum alloy housing, small size, light weight, high transmission resolution, long distance, low latency.

traits

1. Supported audio and video input methods:
   1. Mini HDMI input (Numérique)
   2. Entrée AV (CVBS Analog, vidéo, audio right, audio left)
2. Video input system support:
   1. Mini HDMI: 1080 60P, 1080 50P, 1080 30P, 1080 25P, 1080 60je, 1080 50je, 1080 30je, 720 60P, 720 50P, 720 30P, …, différents modes d'adaptation
   2. AV in: 720×480 60je (NTSC), 720×576 50je (COPAIN), mode adaptatif
3. Video encoding: 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 modulation
   1. Configurable Convolutional Code Ratio: 1/2, 2/3, 3/4, 5/6, 7/8
   2. Configurable modulation method: QPSK/QAM16/QAM64
   3. IFFT mode: 2K
   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. Bande de fréquence de travail: 160MHz~860MHz can be configured;
8. Puissance d'émission maximale: 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. Source de courant: 10 ~ 13V, 12V best RF performance;
13. Consommation d'énergie: The power consumption of the whole unit is about 14W when the transmit power is 1W;
14. Overall size: 74 * 55 * 24.6mm
15. Poids: 135g

Remarque

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 the mutual influence and mutual restraint. When the air interface rate is greater than 5 times the video code rate, the video delay is minimum. In this case, the actual test is that the video delay is about 60 ms when the code is transmitted at 720P@60, and the video delay is about 130 ms 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, et est compatible avec d'autres résolutions et décodage et lecture de fréquence d'images (we measured the delay of a brand SLR camera at about 70 Mme, and the delay of a famous brand sports camera at about 130 Mme). For most application scenarios, the video delay is set to about 200ms 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, fréquence de travail, L'interface Config UART de cette carte de décodage peut être connectée au panneau de commande du port série pour définir les paramètres de fonctionnement tels que la bande de fréquence de travail, and transmitting and receiving antennas. Actual test results: a customer test, unmanned aircraft mounted ST100 transmitter to fly about 100 meters high, 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, 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, about 2.2 meters high on the pole, 2.2 kilometers away, high-definition video smooth, a small amount 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.

Connecteur

Taille

75 X 55 X 25 mm

Test de performances RF

Fréquence du centre d'exploitation 470 MHz, Amplificateur: 1W

Fréquence du centre d'exploitation 700 MHz, Amplificateur: 1W

Améliorer

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Q & UNE