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    COFDM unmanned helicopter remote control airplane robot wireless communication transmission system diagram

  • Categories:Other
  • Date:2013-09-11
  • COFDM unmanned helicopter remote control airplane robot wireless communication transmission system diagram   1 .Overview Illustrated datalink leap SC-FDE using wireless broadband communications technology, can easily achieve in the “l ...
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1 pcs sample
2650 USD
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45 USD
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2 pcs
2599 USD
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69 USD
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Product Description

COFDM unmanned helicopter remote control airplane robot wireless communication transmission system diagram

cofdm

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1 .Overview
Illustrated datalink leap SC-FDE using wireless broadband communications technology, can easily achieve in the “line of sight distance, complex topography, non-line of sight, the move” and other features of the environment, the stability of midrange video transmission.
Easy installation, start working.
Maximum output power 5W (FY702), 500 mW (FY700).
Device default 340MHz band free frequency bands.
With reverse data interface, which means that the figure could pass bi-directional serial communication simultaneously, digital radio can be omitted. (This requires the user to special instructions and the price differences)
Using a single carrier frequency domain equalization patented technology, anti-frequency selective fading and channel time-varying ability
Support vehicle, airborne high-speed movement and sight and non-line of sight environments.
Based on DSP and FPGA embedded architecture
Single transmitter device integrated video capture, compression and communication transmitter function
Small size, light weight
Ergonomic design, easy to carry.
Power amplifier, high efficiency, energy saving
Deployment time is short, the power that is used

2 .Transmitter Technical Specifications

Classification index
Image Video System     PAL,  NTSC
MPEG4 compression
Image compression format D1 (SD)
Video frame rate     1,12.5,25 frames / sec
Propagation delay    200 ~ 500ms (depending on setting)
Interface Composite video input:     1VP-P @ 75Ω
Composite video output:    1 ~ 1.2VP-P @ 75Ω
MIC input audio interface format,    RCA connectors
* A serial data interface, baud rate: 9600 (special instructions when purchasing)
Reverse *    a serial data interface, baud rate: 9600 (requires user instructions in advance, and the price is not the same)
AES128 encryption data security
Baseband Modulation QPSK, 16QAM
Channel encoding LDPC, 1/2, 3/4
Baseband symbol rate    0.625,1.25,2.5,5 (M / S) (can be customized)
Maximum multipath delay 10us
Maximum speed 500 km per hour   (higher speeds to be customized)
Transmitter transmitting power       500W (FY700)
2W-5W (FY702 default 2W, the user can request to 2-5W)
Transmitting frequency 340MHz ± 10MHz, stepping 250K (other bands can be customized)
2.5MHz channel bandwidth
60dB”>Clutter and harmonic suppression> 60dB
Electrical characteristics Power Consumption 19W (5 watt transmitter power)
16W (2 watt transmit power)
7W (500 mW transmit power)
Power input * 12V (wide voltage require special instructions)
Environmental Operating Temperature -40 ℃ ~ 55 ℃ (depending on model matching)
Storage temperature -55 ℃ ~ 65 ℃ (optional depending on model)
Operating Humidity <90%

* On behalf of non-standard, users need special instructions when ordering.

3. Receiver Technical Specifications

Classification index
Image Video System PAL, NTSC
Way to relieve MPEG4
D1 image decompression format
Video frame rate 1,12.5,25 frames / sec
Transmission delay 200 ~ 500ms (the baseband configuration)
Interface CVBS composite video output 1Vp-p @ 75Ω
* Transfer Rate 9600bps data interface
Interface Serial (special instructions when purchasing)
Reverse data interface with the forward data * 9600 baud serial port (requires customer specific description, price is not the same)
AES128 encryption data security
Baseband Modulation QPSK
Time-varying channel tracking speed of 500 kilometers (higher speeds to be customized)
Baseband symbol rate 0.625,1.25,2.5,5 (M / S) (5M to be customized)
Prior to the Receiver Operating frequency 340M band: 337 to 343MHz
Sensitivity-109dBm ~-99dBm (different symbol rates)

Dynamic range> 90dB
1.2 times the symbol rate channel bandwidth
Clutter and harmonic suppression> 60dB
Environmental Operating Temperature 0 ℃ ~ 55 ℃
Storage temperature -20 ℃ ~ 55 ℃
Operating Humidity <95%
Electrical characteristics Power Interface outlet hole
Input voltage 12V
Power Consumption 13W

* On behalf of non-standard, users need special instructions when ordering.

4.Pictures

13 12

5.Equipment List
No. Name Quantity Description Remarks
A transmitter 1 transmitter , transmitter power
Two receivers a working power station
3 a frequency transmitting antenna 340M, gain 2DBi, Connector SMA-J, length 7CM
Four receiving antennas a car whip antenna , the center frequency 340MHz, Gain 5.5dBi, a length of about 117.5cm, SL16 Male
5 Antenna 1 Antenna sucker , 3m lead length with N-type needle Interface
6 SMA to BNC video cable one end of the SMA male , one end of the BNC male , the length 40cm.
7 SMA RF cable one end of the SMA male , one end of the SMA female , length 50cm.
8 Adapter 1 Male BNC Female to Lotus
9 BNC video cable at both ends of a 2 m BNC male video cable
10 Equipment List 1
11 Certificate 1

6. Precautions
Serious Considerations
a) Before installation , anti-static measures should be taken to prevent electrostatic damage .
b) must be connected to the video source , make sure the transmitter with a video input and then to its energized , otherwise the transmission delay will become very long , and the image will appear not normal.
c) the antenna is properly installed before turning on the power supply to avoid damage to the device .
d) during the boot process , do not disconnect the antenna , if you want to remove the antenna , turn off the power .
e) in use, to ensure that the transmitter and receiver antennas is greater than 3 meters distance , prevent the strong impact of the signal receiver or a receiver burning life.
General Considerations
a) Ensure that the device is placed away from heat and place in a dry ventilated place.
b) long-term when not in use , disconnect the power supply.
c) Prohibition of equipment drops and bumps
d) prohibiting excessive force enclosure
e) Do not crush the cable rupture caused by external insulating sleeve
f) Do not allow the cable wire damage caused by long-term load-bearing
9 image transmission method to judge the link is working properly
Transmitter and receiver placed about one meter from the ground ( the height of an adult hand ) . Transmitter antenna is vertical , to the device power , receiver antenna must remain vertical distance between the sending and receiving devices were pulled away to 10m, 30m, 50m. The receiving side by observing the OSD data . Determine whether the device properly. Specific reference values ​​are: received signal strength over distance were : -20 ± 2dB,-40dB ± 2dB,-50dB ± 2dB. 23dB。”>These distances have remained at SNR > 23dB. ( Note : Pull away from testing, and other data to be stabilized observations between transceivers do not have the personnel walk around, it can not have shelter . Pull away from the environment should be relatively open , preferably within 50 meters of the surrounding buildings and lush trees without , but there were no other back and forth . course, if none of the above test environment, then the measured data may have an impact , as long as no more than 10 % to 20 % of the float , you can flexibly handle )

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Pay by Money Gram to me :

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Country: China
City: Guangzhou

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Full name :Quan Li

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Last name/ Surname: LI
Country: China
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Beneficiary Name: LI   QUAN
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* Articles will be sent within 1-3 working days when payment clear.

* We will send it to  your PayPal address.If you want to change address,please change it before you make payment. Or you can contact us right before the shipping.

* If the packages are below 0.5kg,we will be shipped via airmail, it will take about 15-25days to your hand. If the package is about 1~3kg,we will   ship via EMS,it will take about 7~15days to your hand.If the package more than 3kg , we will send via DHL. It will take about 3~7days to your hand. All the packages are fromm China guangzhou.

* Package will be sent as a “gift” and declear as less as possible,buyer don’t need to pay for “TAX”

*  After shippment, we will send you an E-mail and inform you the tracking number.

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