Which of the following parameters does a spectrum analyzer display on the vertical and horizontal axes?
The correct answer is B: Signal amplitude and frequency. Which of the following parameters does a spectrum analyzer display on the vertical and horizontal axes is signal amplitude and frequency. Spectrum analyzers show amplitude vs frequency. For amateur radio operators, this is important for test equipment. Understanding this helps when using spectrum analyzers.
Exam Tip
Spectrum analyzer axes = signal amplitude (vertical) and frequency (horizontal). Think 'S'pectrum 'A'nalyzer = 'S'ignal 'A'mplitude vs 'F'requency. Spectrum analyzers show amplitude vs frequency. Not amplitude/time, not SWR/frequency, not SWR/time - just amplitude/frequency.
Memory Aid
"Spectrum analyzer axes = signal amplitude (vertical) and frequency (horizontal). Think 'S'pectrum 'A'nalyzer = 'A'mplitude/'F'requency. Spectrum analyzers show amplitude vs frequency. Important for test equipment."
Real-World Application
A spectrum analyzer: It displays signal amplitude on the vertical axis and frequency on the horizontal axis. This allows you to see the frequency spectrum of a signal - which frequencies are present and their amplitudes. This is what it displays - signal amplitude and frequency.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Signal amplitude and time isn't correct - spectrum analyzers show amplitude vs frequency, not time. Amplitude/time isn't correct.
Option C: Incorrect. SWR and frequency isn't correct - spectrum analyzers show amplitude vs frequency, not SWR. SWR/frequency isn't correct.
Option D: Incorrect. SWR and time isn't correct - spectrum analyzers show amplitude vs frequency, not SWR or time. SWR/time isn't correct.
题目解析
The correct answer is B: Signal amplitude and frequency. Which of the following parameters does a spectrum analyzer display on the vertical and horizontal axes is signal amplitude and frequency. Spectrum analyzers show amplitude vs frequency. For amateur radio operators, this is important for test equipment. Understanding this helps when using spectrum analyzers.
考试技巧
Spectrum analyzer axes = signal amplitude (vertical) and frequency (horizontal). Think 'S'pectrum 'A'nalyzer = 'S'ignal 'A'mplitude vs 'F'requency. Spectrum analyzers show amplitude vs frequency. Not amplitude/time, not SWR/frequency, not SWR/time - just amplitude/frequency.
记忆口诀
Spectrum analyzer axes = signal amplitude (vertical) and frequency (horizontal). Think 'S'pectrum 'A'nalyzer = 'A'mplitude/'F'requency. Spectrum analyzers show amplitude vs frequency. Important for test equipment.
实际应用示例
A spectrum analyzer: It displays signal amplitude on the vertical axis and frequency on the horizontal axis. This allows you to see the frequency spectrum of a signal - which frequencies are present and their amplitudes. This is what it displays - signal amplitude and frequency.
错误选项分析
Option A: Incorrect. Signal amplitude and time isn't correct - spectrum analyzers show amplitude vs frequency, not time. Amplitude/time isn't correct. Option C: Incorrect. SWR and frequency isn't correct - spectrum analyzers show amplitude vs frequency, not SWR. SWR/frequency isn't correct. Option D: Incorrect. SWR and time isn't correct - spectrum analyzers show amplitude vs frequency, not SWR or time. SWR/time isn't correct.
知识点
Spectrum analyzer, Vertical and horizontal axes, Signal amplitude, Frequency
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.