32 Questions
What can an oscilloscope measure?
Voltage, frequency, and phase
What type of oscilloscopes use a cathode-ray tube with its associated control and input circuitries?
Analog oscilloscopes
What does X-Y mode of an oscilloscope allow you to do?
Plot one input signal versus another
What type of oscilloscopes are fully digital?
Modern oscilloscopes
What is the principle of operation of an analog oscilloscope?
Uses a cathode-ray tube with associated control and input circuitries
What kind of measurements can be made using an analog oscilloscope?
Peak voltage, frequency, period, phase difference, pulse width, delay time, rise time, and fall time
What is the function of the trigger circuitry in a digital oscilloscope?
To steady the signal displayed on the screen
What is the role of the vertical system in a digital oscilloscope?
To adjust the amplitude of the signal
What is the key function of the horizontal system in a digital oscilloscope?
To generate the sample clock
What does an analog-to-digital converter (ADC) do in a digital oscilloscope?
Converts the incoming analog signal into a digital format
In real-time sampling, what does a digital oscilloscope do?
Collects consecutively as many samples as it can as the signal occurs
What is the main purpose of waveform sampling in digital oscilloscopes?
To acquire the digital samples
What happens if a signal is so fast that a digital oscilloscope can collect only a few sample points?
It uses interpolation to display the waveform
How are digital waveform points stored in a digital oscilloscope?
As waveform records
What determines how often an analog-to-digital converter (ADC) takes a sample in a digital oscilloscope?
'Clock ticks' per second
What is the purpose of storing waveform points in memory in a digital oscilloscope?
To use for interpolation in displaying waveforms
What are the key measurements that can be made using a digital oscilloscope?
Voltage, frequency, and phase
What type of waveforms can an oscilloscope graph against a second variable in X-Y mode?
All types of waveforms
What are the basic quantities that can be measured using an oscilloscope?
Peak voltage, frequency or period, phase difference, pulse width, delay time, rise time, and fall time
What are the components inside a conventional CRT tube used in analog oscilloscopes?
Electron gun, deflection plates, and the phosphorescent screen
What is the main difference between early analog oscilloscopes and modern digital oscilloscopes?
Early oscilloscopes are of analog type, while modern oscilloscopes are fully digital
What is the function of an oscilloscope in V-T mode?
Generating a graph of an input signal versus time
What is the basic concept behind digital oscilloscopes?
The basic concept is the conversion of the incoming analog signal into a digital format for further processing using digital signal processing techniques.
What is the role of the vertical system in a digital oscilloscope?
The vertical system preconditions the signal, adjusts its amplitude, and is responsible for the acquisition of digital samples.
What determines how often an analog-to-digital converter (ADC) takes a sample in a digital oscilloscope?
The sample clock generated by the horizontal system determines how often the ADC takes a sample.
What is the function of the trigger circuitry in a digital oscilloscope?
The trigger circuitry stabilizes the displayed signal on the screen and determines what parts of the signal to 'trigger' on and start measuring.
What type of sampling method is used as the standard in digital oscilloscopes?
Real-time sampling is the standard sampling method used in digital oscilloscopes.
What is used to sample the signal at discrete points in time in a digital oscilloscope?
Analog-to-digital converter (ADC) is used to sample the signal at discrete points in time and convert the signal's voltage into digital values.
What does the record length refer to in a digital oscilloscope?
The record length refers to the number of waveform points used to make a waveform record.
What does the display do in a digital oscilloscope?
The display receives the record waveform points stored in memory and sends them to the screen for visualization.
What type of signals require real-time sampling in a digital oscilloscope?
Single-shot or transient signals require real-time sampling in a digital oscilloscope.
What is the main purpose of waveform sampling in digital oscilloscopes?
The main purpose is to capture and convert the analog signal into digital format for further processing.
This quiz covers the principles of operation of a digital oscilloscope, including waveform display, X-Y mode, common oscilloscope controls, and basic measurement procedures. It also includes experiments such as monitoring AC signals, monitoring DC and AC signals, Lissajous Figures, and measurement of phase difference.
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