Dear everybody,
I want to measure the SNR from a DVB-S satellite, using a module that receive the signal and can be interfaced to microprocessor based system via SPI/I2C or RS232 to get the signal SNR.
what is the module can make such function?
please help me to get the right way...
best regards,
MAhmoud

 

Dear Mr. Shendy
Before that tell us what you know about the things below.
1. DVB-S transmission
2. Micro processors
3. SPI interface
4. I2C bus protocol
5. RS232
and last but not the least SNR.

Then I can give you a module schematic to build one.
How's tht?

 

Dear,
I know that:

1. DVB-S is the commond Digital Video Broadcast that uses the frequency range: 925 - 2125MHz.

2. Micro processors: For many years I use AVR microcontroller in my control application, I build the hardware, then I write the code in C as the firmware.

3. SPI interface: The serial peripheral interface that communicate the microprocessor or the microcontroller to the peripheral by sending syncronous data with a clock in a manner of a master and slave.

4. I2C bus protocol: I interfaced many memory modules using this protocol and familiar with it.

5. RS232: a protocol of asynchronous serial communication used to interface using a speed called a Baud rate and start ,stop, data bits stream.

SNR: Signal to noise ratio, determines the quality of the signal received.

I made many designs, but this is the first time to keep in touch with reading a signal from satellite communication system use the DVB-S modulation.

best regards...

 

For DVB detection ur insight on this is limited. U need to learn about the modulation technics, and transmission ranges from a typical antenna. DVB is sometimes really troublesome to get good fix
For a start try to get ur hands on DVB-s signal finder cum strength meter