Subelement D: Display & Control Systems - 10 Key Topics – 10 Exam Questions— Topic 31: Timing Circuits
Question 8-31D6
Element 8 (RADAR)The sweep drive is initiated by what circuit?
Explanation
In systems utilizing a sweep display, such as oscilloscopes or radar, precise timing of the horizontal sweep is crucial for a stable image. The synchronizer circuit generates the timing pulses necessary to *initiate* this sweep. It ensures the sweep starts at the correct moment, often locked to an external signal or an internal system trigger, thereby presenting a stable and readable display.
The sweep amplifier subsequently amplifies this initiated sweep signal to drive the deflection components. A video amplifier processes image information, not sweep timing. A resolver is typically used for angular position sensing, unrelated to initiating a linear sweep. Therefore, the synchronizer is the circuit responsible for starting the sweep drive.
Related Questions
8-31D4 The synchronizer primarily affects the following circuit or function:8-31D5 The output from the synchronizer usually consists of a: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:8-32D2 Range markers are determined by:8-32D3 A gated LC oscillator, operating at 27 kHz, is being used to develop range markers. If each cycle is converted to a range mark, the range between markers will be: