The role of CATV modulator

Definition of CATV modulator

Cable TV modulator referred to as the modulator, also known as the adjacent frequency modulator, radio frequency modulator, and some manufacturers deliberately called digital TV sharing device.

Working principle of CATV modulator

Modulator is to modulate the audio and video signals to the required RF frequency to become a TV channel.

Input for the RCA audio and video signals, the output for a specific band of RF RF signal. It is generally used to process the intermediate frequency filter, which can effectively ensure the characteristics of the residual sideband and make it suitable for the adjacent frequency transmission system.

Main functions of modulator

The main function is to signal modulator (IPTV box, 9 dual-mode satellite set-top box, Android TV box, media player, camera, television demodulator AV signal source) video signal provided by (VIDEO) and audio signal (AUDIO) modulated into high frequency oscillation signal stability the video for amplitude modulation, audio FM modulation.

Note: computer signals to another with relative professional VGA, DVI, HDMI converter will signal the graphics output into a video signal can be input to the modulator, relates to computer signal transmission need to select modulator real intermediate frequency processing such as Gstar-3600H, otherwise there will be such as trailing characters.

The above is about the role of the limited TV modulator, more information about the modulator please pay attention to the official website of kepnixshop.