Subelement F: Installation, Maintenance & Repair— Topic 48: Maintenance
Question 8-48F4
Element 8 (RADAR)Which of the following is the most useful instrument for RADAR servicing?
Explanation
An oscilloscope is essential for RADAR servicing because radar systems operate by transmitting and receiving precisely shaped RF pulses. An oscilloscope allows technicians to visually inspect these waveforms in the time domain, displaying critical parameters such as pulse width, pulse repetition frequency (PRF), pulse shape, amplitude, and timing relationships between transmitted and received signals. This visual representation is invaluable for diagnosing issues with the modulator, transmitter, receiver, and timing circuits.
A frequency counter would only show the carrier frequency, not the pulse characteristics. An R.F. Wattmeter measures power but provides no information about the pulse shape or timing. An audio generator is designed for low-frequency audio signals and is entirely unsuitable for RF radar frequencies.
Related Questions
8-48F2 The echo box is used for:8-48F3 What should be done to the interior surface of a waveguide in order to minimize signal loss?8-48F5 A non-magnetic screwdriver should always be used when replacing what component?8-48F6 What kind of display would indicate water in the waveguide?8-49F1 Why is coaxial cable often used for S-band installations instead of a waveguide?