How to Receive Satellite TV Signal using IRD and Local receiver ?


To receive TV signal, need a local receiver or IRD (Integrated Receiver Decoder). IRD is more professional device than local receiver. But both devices perform the same function.  IRD is more reliable than local receiver. 

In both IRD and local receiver need to put down link parameter to receive signal of the specefic TV channel.TV engineer have to follow the following instruction step by step to receive a signal from the satellite.


                                                  
                                                              Figure: Local Receiver       

Step 1: At first need to connect audio-video output of receiver or IRD to a monitor. Local receiver has no monitor. So to put the downlink parameter to the local receiver need a output device and here monitor well perform this task.  

                                                               Figure: Harmonic IRD         

                                                    
Step 2: After that connect the coaxial cable which is came from LNB, to LNB IN / RF IN port of the receiver. Then power on the receiver and power.



Figure: Input and output connection of local receiver

Step 3: Then power on the LNB from the receiver. For horizontal signal LNB need 18 Voltage and for Vartical signal LNB need 13 Voltage. Set the local oscillator frequency of the used LNB.
In general 5150 or 5750 MHz local oscillator frequency LNB is used for C band. 

Step 4: Now set the downlink frequency and symbol rate of the desired channel. Most of the local receiver get the signal by only this two parameters. But IRD need more parameter to receive the signal. Modulation, polarization and FEC are iportant for IRD. Finally after putting all the parameters in the receiver or IRD, RF engineer can get the desired channel in the TV.

To know about IRD click on  IRD and to know the downlink parameter of Bangladeshi TV channel click on Downlink parameter of Bangladeshi TV channel

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