Which of the following test instruments is used to display spurious signals and/or intermodulation distortion products generated by an SSB transmitter?
The correct answer is B: Spectrum analyzer. Which of the following test instruments is used to display spurious signals and/or intermodulation distortion products generated by an SSB transmitter is a spectrum analyzer. Spectrum analyzers show frequency domain, revealing spurious and IMD products. For amateur radio operators, this is important for transmitter testing. Understanding this helps when testing transmitters.
Exam Tip
Display spurious/IMD from SSB transmitter = spectrum analyzer. Think 'S'purious/'I'MD = 'S'pectrum 'I'nstrument. Spectrum analyzers show frequency domain, revealing spurious and IMD products. Not differential resolver, not logic analyzer, not network analyzer - just spectrum analyzer.
Memory Aid
"Display spurious/IMD from SSB transmitter = spectrum analyzer. Think 'S'purious/'I'MD = 'S'pectrum analyzer. Spectrum analyzers show frequency domain, revealing spurious and IMD products. Important for transmitter testing."
Real-World Application
Testing an SSB transmitter: A spectrum analyzer is used to display spurious signals and/or intermodulation distortion products. The spectrum analyzer shows the frequency domain, making it easy to see unwanted signals at various frequencies. This is the instrument - spectrum analyzer for spurious and IMD display.
Key Concepts
Why Other Options Are Wrong
Option A (Differential resolver): Incorrect. Differential resolver isn't used - spectrum analyzer is used to display spurious and IMD. Differential resolver isn't the instrument.
Option C (Logic analyzer): Incorrect. Logic analyzer isn't used - spectrum analyzer is used to display spurious and IMD. Logic analyzer isn't the instrument.
Option D (Network analyzer): Incorrect. Network analyzer isn't typically used for this - spectrum analyzer is used to display spurious and IMD. Network analyzer isn't the instrument.
题目解析
The correct answer is B: Spectrum analyzer. Which of the following test instruments is used to display spurious signals and/or intermodulation distortion products generated by an SSB transmitter is a spectrum analyzer. Spectrum analyzers show frequency domain, revealing spurious and IMD products. For amateur radio operators, this is important for transmitter testing. Understanding this helps when testing transmitters.
考试技巧
Display spurious/IMD from SSB transmitter = spectrum analyzer. Think 'S'purious/'I'MD = 'S'pectrum 'I'nstrument. Spectrum analyzers show frequency domain, revealing spurious and IMD products. Not differential resolver, not logic analyzer, not network analyzer - just spectrum analyzer.
记忆口诀
Display spurious/IMD from SSB transmitter = spectrum analyzer. Think 'S'purious/'I'MD = 'S'pectrum analyzer. Spectrum analyzers show frequency domain, revealing spurious and IMD products. Important for transmitter testing.
实际应用示例
Testing an SSB transmitter: A spectrum analyzer is used to display spurious signals and/or intermodulation distortion products. The spectrum analyzer shows the frequency domain, making it easy to see unwanted signals at various frequencies. This is the instrument - spectrum analyzer for spurious and IMD display.
错误选项分析
Option A (Differential resolver): Incorrect. Differential resolver isn't used - spectrum analyzer is used to display spurious and IMD. Differential resolver isn't the instrument. Option C (Logic analyzer): Incorrect. Logic analyzer isn't used - spectrum analyzer is used to display spurious and IMD. Logic analyzer isn't the instrument. Option D (Network analyzer): Incorrect. Network analyzer isn't typically used for this - spectrum analyzer is used to display spurious and IMD. Network analyzer isn't the instrument.
知识点
Test instruments, Spurious signals, Intermodulation distortion products, SSB transmitter, Spectrum analyzer
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.