Quiz on Oscilloscope Input Impedance and Scope Probe

What components make up the oscilloscope's input impedance?

• Inductive and resistive components

• Capacitive and inductive components

• Resistive and inductive components

• Resistive and capacitive components

What is the function of a scope probe?

• To increase the frequency of the signal

• To eliminate all capacitance

• To amplify the signal

• To act as a 10:1 attenuator

What is the typical capacitance of a 10:1 probe compared to the scope capacitance?

• Cp = C/9

• Cp = C

• Cp = C/2

• Cp = 9C

How can the probe capacitance be adjusted?

• By adjusting the scope's internal resistance

• By altering the probe resistance

• By changing the probe length

• Using a small trimming capacitor

What is the purpose of the internal square wave generator in oscilloscopes?

• For easy probe adjustments

• To measure high-frequency signals

• To calibrate the oscilloscope

• To generate sine waves

What is the effect of an unmatched probe impedance?

• The system acts like a filter

• The signal is amplified

• The system becomes unstable

• The signal is eliminated

What is the main advantage of using a scope probe despite its attenuation?

• It minimizes the capacitive load on the circuit

• It increases the signal amplitude

• It reduces the signal frequency

• It eliminates all noise

What should be used to measure the scope's internal resistance?

• A DC source

• A digital multimeter

• An AC source

• A frequency generator

What is the effect of the cable capacitance on the scope's input impedance?

• It has no effect

• It eliminates the capacitive load

• It decreases the resistive load

• It increases the capacitive load

What is the purpose of the probe test terminal on the scope front panel?

• To measure voltage

• To calibrate the scope

• To connect external devices

• To adjust the probe capacitor