Subelement D: Display & Control Systems - 10 Key Topics – 10 Exam Questions— Topic 31: Timing Circuits
Question 8-31D4
Element 8 (RADAR)The synchronizer primarily affects the following circuit or function:
Explanation
A synchronizer is essential for maintaining precise timing or phase relationships, especially critical in complex signal generation. The **modulator** is where information is imposed onto a carrier wave. For many advanced modulation schemes, such as digital modulation (e.g., PSK, QAM), or even analog schemes like FM stereo multiplexing or television video signals, accurate timing and phase synchronization are vital to correctly encode the information. The synchronizer ensures the modulator operates with the necessary stability and alignment for the modulated signal to be intelligible and decodable by a receiver.
A mixer (A) combines frequencies but doesn't primarily depend on a synchronizer for its fundamental operation. A receiver (B) *uses* synchronization for demodulation but is not primarily *affected* by a synchronizer in the context of signal generation. An I.F. amplifier (D) simply amplifies a signal and has no direct synchronization function.
Related Questions
8-31D2 The circuit that develops timing signals is called the:8-31D3 Which of the following functions is not affected by the timing circuit?8-31D5 The output from the synchronizer usually consists of a:8-31D6 The sweep drive is initiated by what circuit?8-32D1 Accurate range markers must be developed using very narrow pulses. A circuit that could be used to provide these high-quality pulses for the CRT is a: