A capacitance discharge sensor that produces a digital voltage signal of varying frequency is being discussed. Technician A says a voltmeter can be used to monitor the signal circuit output. Technician B says a DMM that has a frequency measurement function can be used to monitor the signal circuit output. Who is correct?
A) Technician A only
B) Technician B only
C) Both Technician A and B
D) Neither Technician A nor B

Question

Quizplus · Accepted Answer

A capacitance discharge sensor that produces a digital voltage signal of varying frequency requires a device that can measure frequency to monitor its output accurately. A standard voltmeter measures voltage and not frequency, making Technician A's suggestion incorrect. A Digital Multimeter (DMM) with a frequency measurement function, as suggested by Technician B, is the appropriate tool for monitoring the signal circuit output of such a sensor.

A Capacitance Discharge Sensor That Produces a Digital Voltage Signal