3-L-077: Specialized Instruments
3-77L1:
A(n) ____ and ____ can be combined to measure the characteristics of transmission lines. Such an arrangement is known as a time-domain reflectometer (TDR).
Oscilloscope, pulse generator.
Frequency spectrum analyzer, RF generator.
AC millivolt meter, AF generator.
Frequency counter, linear detector.
3-77L2:
What does the horizontal axis of a spectrum analyzer display?
Frequency.
Amplitude.
Voltage.
Resonance.
3-77L3:
What does the vertical axis of a spectrum analyzer display?
Amplitude.
Duration.
Frequency.
Time.
3-77L4:
What instrument is most accurate when checking antennas and transmission lines at the operating frequency of the antenna?
Frequency domain reflectometer.
Time domain reflectometer.
Wattmeter.
DMM.
3-77L5:
What test instrument can be used to display spurious signals in the output of a radio transmitter?
A spectrum analyzer.
A wattmeter.
A logic analyzer.
A time domain reflectometer.
3-77L6:
What instrument is commonly used by radio service technicians to monitor frequency, modulation, check receiver sensitivity, distortion, and to generate audio tones?
Service monitor.
Oscilloscope.
Spectrum analyzer.
DMM.
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