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Hi,
I am plotting a SNR vs distance to understand atmospheric effect on owc. My snr provides in accurate values (multiples of 100's..) compared to the fig.1 in the article(this is attached below). I have included my code here, kindly can anyone help. thank you.
mycode:
%Link Distance...
hi this is the schematic
this is the oscilloscope observation. the upper signal from transmitter, the lower from receiver end LED. Also the yellow cable on the other picture is the rca audio cable going into the LED TV as a direct line. I am using the CVBS as my RCA Audio cable.
hi guys, i tried different methods to get to a solution regarding the matter above. Eventually i ended up with this attached schematic. I have checked both signals at receiver and transmitter end. peak to peak is around 200-340mv. frequency 8 hz - 600 hz.
now the problem, when i hook up the...
Brian thank you for your reply. It enlightened me in a different route. Instead, I was thinking of a point to point (at least 1 meter apart) led channel.
Is there any way of converting the composite video to TTL? may i can modulate LED using TTL signal. Please suggest. Perhaps give some...
Hi Brian, thank you for you suggestion. Yes you are right. Initially I wanted to digitize baseband video and send the digital usb data by modulating LEDs. But as you suggested, converting composite video to LED using optocoupler would be relatively easier, could you please provide more info on...
I have a video signal coming from a composite video out (we can ignore audio at this point). Products such as EasyCAP can convert such signal to usb differential signal. Arduino can process the incoming signal voltage from usb and modulate the LED accordingly. *This modulation has become the key...
I am using a composite video to usb converter. From usb i have D+ and D- differential signal coming out. I manually probed the white (D-) and green(D+) wires from my usb cable (I had to slice the wire) to visualize signal outputs using scope.
Now I want to modulate LED light to transmit this...
Hi sorry for the late reply,
If my input signal = 1.5 Volt
then Output signal must be 4.5Volt
else output sign 0 Volt
How do you represent/achieve this in circuit? Could be specific voltage comparator... please reply asap. thank you.
Hi all,
I am using level 3 pmos and nmos in ORCAD capture. If my input signal is > 1Volt then Output signal must be 1.5Volt. else output sign 0 Volt.
Please help me to get a design in transistor level or explain to me how to get the desired circuit.
Thanks in advance.
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