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Difficulty: MediumSpecialized Testers

A technician is evaluating an electronic communication circuit to determine the exact repetition rate of an incoming periodic signal. Which specialized testing device correctly completes the statement below?

Answer:An instrument designed specifically to measure and digitally display the precise number of periodic cycles per second of an incoming alternating current or radio-frequency signal is known as a 【frequency counter】.

Answer

frequency counter
A frequency counter operates by routing an input signal through a Schmitt trigger and gate circuit that opens for a calibrated time window (such as one second), counting the exact number of pulses to display the frequency directly in Hertz.

Step-by-Step Solution

1
Identify the electrical property being tested in the scenario.
The quantity being measured is cycles per second, which defines frequency measured in Hertz (HzHz).
Matching the electrical parameter to its dedicated measurement device is necessary to select the correct specialized tester.
2
Determine the dedicated bench instrument designed for high-resolution frequency measurement.
A frequency counter accurately tallies waveform transitions against an internal calibrated time base.
While general multimeters measure voltage and resistance, and oscilloscopes visualize wave shape, a frequency counter specifically provides high-precision digital frequency readings.

Key Concept

Operating principles and diagnostic applications of specialized frequency counters.
Estimated Time:45s
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Specialized Testers

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