Dorji RF Receiver Problem

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Taban

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Hil all, i have a problem with Dorji Rf Receiver. My transmitter sends data in 53 second period but i cant receive them. I am taking rubbish signals. When i connect data pin to scope. I am seeing a screen like that



In addition. I cant see any data at logic analyzer.

What i should do ?

It is my RF receiver module



Thanks for help
 

Kindly check the cable and pin connections..!! and that no signal wire is touching ground conductor or likewise..!!
 

I checked my connections, there is no problem at connections, that antenna wire is not touching ground conductor.
 

I didnt put picture of breadboard circuit to here , but my receivers pins are like below and my connections are correct.

**broken link removed**
 

Taban said:
No they are valid, i can open pictures.
Click to expand...

cuz its in your puter cache

I cannot open the pic either. Try again

Dave

- - - Updated - - -

Plus as I told you in the other forum

Show us photos of YOUR construction so we can check it for errors

a lone antenna wire twisted around the antenna pin, without any other power or I/O connections will not make the unit work



Dave
 
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It is my construction. Yellow cables go to ground, green one goes to 5V, and orange cable is data cable. I connect it to PIC or Scope . All of them directly connected. There is no extra thing. That capacitor(47 uF), i soldered it as external to prevent AGC by looking IC's(SYN470R) datasheet which inside my receiver module.

 

Which datasheet do you mean ? dorji or syn470r ? in dorji's datasheet there isnt but in SYN470R's datasheet there is a schema at page 20 that shows a external capacitor added between CAGC and SHUT pins.
 

assuming the chip is working and the board is correctly laid out, either:
1) your transmitter is too close
2) your transmitter is too far away
3) the AGC R-C timing network has the wrong values for the data rate u are sending
4) there is a strong interfering signal nearby
 

Thanks for reply i will insist on AGC R-C timing network. Otherwise i will doubt about there is a strong interference.
 

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