Question

The circuit used to regenerate clock pulses from the transmitted PAM signals is called ____

(a) Clock demodulator circuits

(b) Timer circuits

(c) Clock receiving circuits

(d) Clock recovery circuits

I got this question in examination.

This is a very interesting question from Time Division Multiplexing topic in section Radio Transmitters, Communication Receivers, Multiplexing and Demultiplexing of Avionics

Answer 1

Correct option is (d) Clock recovery circuits

Easiest explanation: Instead of using a free-running clock oscillator set to the identical frequency of the transmitter system clock, the clock for the demultiplexer is derived from the received PAM signal itself. A circuit called the clock recovery circuits are typical of those used to generate the demultiplexer clock pulses.