How to configure encoder for satellite TV signal transmission.

Encoder Configuration

Encoding  is an essential part for satellite communication. For that reason broadcast engineers need to know how to configure the encoder properly. There are a number of encoder brand in the market. Most of them have the almost same parameter to configure. So the engineers have to put some value of the parameter to the encoder to encode signal. It depends on the demand and criteria of the TV channel owner and the signal. Some of the most important and common parameter (with dummy value) are as follows.   

1) Program name: XYZ TV
2) Service ID: 101
3) Video Format: PAL/ NTSC/ SECAM
4) Video Resulation: 720*576, 1920*1080
5) Video Bit Rate Mod: CBR/ VBR
6) Video Bit Rate (kbps): 4000
7) Audio Bit Rate (kbps): 192
8) Brightness: 50
9) Contrast: 50
10) Saturation: 50
11) Hue: 50
12) Video Encode Mode: MPEG-2
13) Audio Encode Mode: MPEG-2

That parameters define the characteristic of the up-link / transmitting signal. After encoding the signal, it goes into the modulator. Then the signal is modulated for the long distance transmission. After that, the modulated signal is amplified by SSPA or HPA to increase the amplitude of the signals. Then finally it transmitted through the web guide to the satellite.  


Post a Comment