CCTV Camera/ Device Installer Question:

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What is multiplexer?

CCTV Camera/ Device Installer Interview Question
CCTV Camera/ Device Installer Interview Question

Answer:

This is a device that takes inputs from 2 or more video channels and combines them into one signal. This is often done by using time division multiplexing, which interleaves frames from each channel in such a way that they can be split out again. Frequency division multiplexing uses different frequencies to achieve the separation of the signals.

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