Its function is to combine video signals (VIDEO) and The audio signal (AUDIO) is modulated into a stable high-frequency radio frequency oscillation signal, the video is AM modulation, and the audio is FM modulation.
Digital TV modulators are widely used in the transformation of digital cable TV front-ends to modulate audio and video signals into radio frequency signals. The input audio and video signals can be continuously adjusted through the external adjustment knob, allowing the input of 0.7~1.4V video signal source signal and 0.775V±10dB audio signal. Under normal frequency deviation conditions, the modulator can also be continuously adjusted externally. The output image is fine. The product adopts frequency synthesis technology with high frequency stability.
