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Cipher type SD transmitter

Cipher type SD transmitter

Product Description: Secure unidirectional standard definition image mobile wireless video transmission system is a broadcast level standard definition image real-time transmission system produced by our company. Using the leading COFDM modulation technology, it has relatively narrow air bandwidth (8MHz) and strong anti multipath interference ability. Combined with foreign advanced diversity receiving technology, it overcomes the difficulties caused by multipath reflection and occlusion in image transmission under analog technology and conventional modulation technology, and realizes real-time transmission of high-quality standard definition image under high-speed motion or non line of sight conditions It is suitable for use in complex environment; audio and video coding adopts MPEG-2 standard, which has the characteristics of clear picture quality, bright color and smooth image.

Product overview Product parameters Equipment application Related cases


The secure unidirectional standard definition image wireless transmission system is a broadcast level standard definition image real-time transmission system produced by our company. Using the leading COFDM modulation technology, it has relatively narrow air bandwidth (8MHz) and strong anti multipath interference ability. Combined with foreign advanced diversity receiving technology, it overcomes the difficulties caused by multipath reflection and occlusion in image transmission under analog technology and conventional modulation technology, and realizes real-time transmission of high-quality standard definition image under high-speed motion or non line of sight conditions In addition, it adopts the standard of MPEG-2 and bright image coding.

 

  System advantages:

   ● The working frequency band can be customized from 300MHz to 860MHz;

   ● The end-to-end delay is 300 ms;

   ● The image can be transmitted stably under high-speed moving and multi-path interference;

   ● Strong NLOS NLOS transmission capability;

   ● Transmission power 0.5-1.5w customized;

   ● It has the ability of space diversity receiving, dual antenna receiving, stable signal and smooth image;

   ● Small size, light weight, easy to install and use.

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Transmitter product parameters

modulation mode

COFDM

working voltage

DC9V~DC15V

Working current

≤0.7A DC12V

control interface

Standard RS232 interface, 8 data bits, 1 stop bit, even check, baud rate: 19200

Transparent data interface

One way transparent serial transmission. (need the cooperation of decryption board), 8 data bits, 1 stop bit, support odd check, even check, wireless check, baud rate: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400

Encryption method

Support 128 bit encryption, decryption to decrypt the cooperation of the board

Modulation mapping

QPSK(4QAM)、16QAM、64QAM

Forward error correction

1/2  2/3  3/4   5/6  7/8

Protection interval

1/32  1/16  1/8  1/4

Carrier number

2K

Frequency bandwidth

8m, 4m, 2m adjustable

Transmission stream

2000kbs ~ 20000kbs adjustable

Transmitting power

0.5W /1.5W

Transmission frequency

It can be customized at any frequency. The frequency can be adjusted continuously. The step is 1MHz

Power flatness

Less than 0.2db in 10MHz band

Shoulder ratio

The output power is better than - 30dB at - 27db

Second harmonic

≤-45dB

MER

32Db

Input video

1Vp-p, 75 ohm

Input audio

Left and right channels

Video audio interface

Military aviation plug

Video coding format

MPEG-2F

image quality

It is 720 × 576 when the code stream is larger than 4m

Video format

Pansc and pantl can be set

Protection standard

All aluminum radiator case, dust proof, waterproof, rust proof, shockproof design

 

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System application:

       It can be applied to public security, fire control, traffic police, civil air defense emergency, urban management law enforcement, environmental protection monitoring, three prevention emergency, water conservancy flood control, electric power emergency, railway emergency, maritime law enforcement, Marine Supervision, customs border defense, wharf monitoring, forest fire prevention, oil field anti-theft, military reconnaissance, television transmission, etc.; it is suitable for real-time high-quality images in urban, marine, mountainous and other complex environments Mobile transmission.

 

System application form:

It is mainly used in the scene of individual soldier video return or UAV video return. The front-end transmitter transmits the scene standard definition video signal to the handheld receiver and displays the video image for real-time monitoring.

Application scenario 1
 Portable mobile video wireless transmission scheme
 

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