⎝⎛叫我棋牌⎞⎠

LA-H7900 COFDM HD Ultra-low Delay Wireless Transmission Equipment

Main Products: wireless monitoring, wireless monitoring equipment, wireless video transmission, wireless monitoring system, wireless video monitoring

Product introduction:

高清超低延时无线视频传输设备,采用COFDM( Coded Orthogonal Frequency Division Multiplexing :编码 正交频分复用)调制技术,具有传输频带窄、很强的抗多径干扰能力和抗多径衰落能力,能够实现非视距(NLOS),高速运动情况下实时传输高质量图像。 LA-H7900 COFDM high-definition ultra-low-latency wireless video transmission equipment adopts COFDM ( Coded Orthogonal Frequency Division Multiplexing ) modulation technology. It has a narrow transmission band, strong anti-multipath interference capability and anti-multipath Path fading capability, can realize non-line-of-sight (NLOS), real-time transmission of high-quality images under high-speed motion.

    数字视频编码标准 ,输出高清HD1080P画质,分辨率达1920*1080(向下兼容1080I、720P、480P及标清)。 The system adopts H.265 digital video coding standard , and outputs high-definition HD1080P image quality with a resolution of 1920 * 1080 (backward compatible with 1080I, 720P, 480P and SD).

Widely used in drones, unmanned vehicles, unmanned ships, special robots (disaster relief, rescue, forest fire prevention), three defense emergency communications, broadcast and television broadcasting; field investigations by individual soldiers; public security, armed police, investigators and command vehicles or Command center image transmission; high-quality real-time transmission of maritime video in border anti-smuggling, maritime, and coastal defense areas; real-time ⎝⎛叫我棋牌⎞⎠ gathering and broadcasting of live broadcasts; wireless radio transmission of helicopters and airships for aerial detection and monitoring. Military reconnaissance, border defense patrol, public security technical reconnaissance, aerial photography, aerial mapping, power inspection, railway rescue, maritime law enforcement, urban management law enforcement, confidential interviews, health and epidemic prevention or emergency command, unmanned vehicles, unmanned ships, special Robots and other fields.


Advantages :

Ø          Small size and light weight

Ø          压缩,帧率最高支持60P H.265 compression, frame rate up to 60P

Ø          Encoding, air transmission, decoding delay 30MS

Ø          Easy to carry around (hidden, disguised)

Ø          Has strong anti-interference ability and non-line-of-sight diffraction ability

Ø          Wide voltage input DC7-16V

Ø          高清输入 HDMI HD input

Ø          Clear picture quality up to 1080p

Ø          The LCD display interface of the receiver is clear and clear, making human-computer interaction easier and more convenient.
Ø          Diversity dual antenna reception for clearer and smoother real-time images

Technical indicators:

    transmitter:

working frequency

~4400MHz ,频率订制 300MHz ~ 4400MHz, frequency customization

RF power

400mW 400mW

Channel bandwidth

2 / 2.5 / 4 / 8MHz

FEC

,2/3,3/4,5/6,7/8 1/2 , 2/3, 3/4, 5/6, 7/8

Guard interval

,1/16,1/8,1/4 1/32 , 1/16, 1/8, 1/4

Channel capacity

~31Mbps 5Mbps to 31Mbps

Delay

≤30ms

Bit error rate

≤10 -6

Audio and video compression format

H.265

Transmission distance

> 3 公里 ;空对地 > 20 公里 ;非视距 > 500 Ground line-of-sight > 3 km ; air-to-ground > 20 km ; non-line-of-sight > 500 m

Audio and video interface

音视频复合接口 HDMI audio and video composite interface

encryption

128 位的加密,解密要解密板的配合 Support 128 -bit encryption

One-way transparent serial port

Supports one-way transparent serial transmission. (Requires the cooperation of the decryption board)

Image definition

,向下兼容1080I、720P、480P及标清 HD1080P , backward compatible with 1080I, 720P, 480P and SD

Image frame rate

720 60P 1080 24P 1080 25P 1080 30P 1080 50P 1080 60P ,各种模式自适应 720 50P , 720 60P , 1080 24P , 1080 25P , 1080 30P , 1080 50P , 1080 60P , various modes adaptive

power supply

~16V(电池DC 7.2V/1400mA 或2200mA,提供外接供电接口 DC7 ~ 16V (battery DC 7.2V / 1400mA or 2200mA, providing external power supply interface )

Dimensions

L90 * W73 * H45mm

weight

220g

Receiver:

working frequency

160MHz ~ 860MHz

Channel bandwidth

0.1MHz 1.0MHz ~ 8.0MHz in 0.1MHz steps

IFFT

8K 2K , 8K

Guard interval

1/8 1/16 1/32 1/4 , 1/8 , 1/16 , 1/32

FEC

2/3 3/4 5/6 7/8 1/2 , 2/3 , 3/4 , 5/6 , 7/8

Modulation mapping

4QAM )、 16QAM 64QAM QPSK ( 4QAM ), 16QAM , 64QAM

video

HDMI 输出 H.265 HD HDMI output

Support encryption function

128 128 -bit supported keys

One-way transparent serial port

Supports one-way transparent serial transmission

Stop bit

Support odd parity, even parity, no parity

Baud rate

2400 4800 9600 19200 38400 1200 , 2400 , 4800 , 9600 , 19200 , 38400

115200 230400 57600 , 115200 , 230400

Channel

47

Sensitivity

-106dBm

Receiving technology

Space diversity

Receive polarization

Vertical polarization, dual antenna reception

Image definition

,向下兼容1080I、720P、480P及标清 HD1080P , backward compatible with 1080I, 720P, 480P and SD

Image frame rate

、50、60帧/秒,兼容其它帧率 24 , 50, 60 frames / second, compatible with other frame rates

power supply

DC12V / 1A

Dimensions

103 * 93 * 42

weight

223g

Channel capacity table with different parameters

Modulation

Internal error correction code

Guard interval

1/4 (224us)

1/8 (112us)

1/16 (56us)

1/32 (28us)

QPSK

1/2

4.98Mb / s

5.53Mb / s

5.85Mb / s

6.03Mb / s

2/3

6.64Mb / s

7.37Mb / s

7.81Mb / s

8.04Mb / s

3/4

7.46Mb / s

8.29Mb / s

8.78Mb / s

9.05Mb / s

5/6

8.29Mb / s

9.22Mb / s

9.76Mb / s

10.05Mb / s

7/8

8.71Mb / s

9.68Mb / s

10.25Mb / s

10.56Mb / s

16QAM

1/2

9.95Mb / s

11.06Mb / s

11.71Mb / s

12.06Mb / s

2/3

13.27Mb / s

14.75Mb / s

15.61Mb / s

16.09Mb / s

3/4

14.93Mb / s

16.59Mb / s

17.56Mb / s

18.10Mb / s

5/6

16.59Mb / s

18.43Mb / s

19.52Mb / s

20.11Mb / s

7/8

17.42Mb / s

19.35Mb / s

20.49Mb / s

21.11Mb / s

64QAM

1/2

14.93Mb / s

16.59Mb / s

17.56Mb / s

18.10Mb / s

2/3

19.91Mb / s

22.12Mb / s

23.42Mb / s

24.13Mb / s

3/4

22.39Mb / s

24.88Mb / s

26.35Mb / s

27.14Mb / s

5/6

24.88Mb / s

27.65Mb / s

29.27Mb / s

30.16Mb / s

7/8

26.13Mb / s

29.03Mb / s

30.74Mb / s

31.67Mb / s


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