AdvancedA-003-003-007
What is a signal generator?
B
Answer
Transmitters and receivers
Type
A
A low-stability oscillator used to inject a signal into a circuit under test
B
A high-stability oscillator which can produce a wide range of frequencies and amplitudes
C
A high-stability oscillator which generates reference signals at exact frequency intervals
D
A low-stability oscillator which sweeps through a range of frequencies
Answer Notes
A signal generator is an essential piece of test equipment designed to produce a highly stable RF or audio signal. It allows the user to precisely select both the frequency and the amplitude of the output signal, making it invaluable for testing receiver sensitivity, alignment, and signal tracing.
Options suggesting a "low-stability oscillator" are incorrect because test equipment must be reliable and accurate to be useful. An oscillator that drifts would make systematic testing impossible.
The option describing an oscillator that generates signals at "exact frequency intervals" actually describes a marker generator or comb generator, not a general-purpose signal generator.
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The dial calibration on the output attenuator of a signal generator:
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A dip meter: