Oscilloscopes
The process of taking measurements at discrete points in time to recreate a signal digitally.
What is sampling?
The mode of operation of a logic analyzer in which the sampling clock is provided by the device under test.
What is state mode or synchronous mode?
A proper oscilloscope display requires these settings to be configured.
What are voltage resolution, timebase, and trigger condition.
A spectrum analyzer measures a signal in this domain.
What is the frequency domain?
Periodic waveforms can be broken down mathematically into a series of what kind of waveform?
What is a sine wave?
Oscilloscopes typically have high impedance inputs to prevent this from happening.
What is the loading effect?
The voltage level that defines whether a signal is considered HIGH or LOW.
What is logic threshold?
An inaccurate representation of a waveform caused by using an insufficient sampling rate.
What is aliasing?
Real-time spectrum analyzers have this significant disadvantage.
What is a limited frequency range?
This kind of waveform will have an infinite number of odd harmonics.
What is a square wave?
A sampling technique in which all samples are taken from the same waveform cycle.
What is real-time sampling?
The amount of time between samples in a logic analyzers.
What is timing resolution?
The smallest change in a measurement an oscilloscope can display.
What is resolution?
This is the biggest advantage of using a swept-tuned spectrum analyzer.
What is a wide frequency range?
A significant harmonic contains at least this percent of the fundamental.
What is 10%?
A technique used to recreate a waveform between sample points.
What is interpolation?
A feature in logic analyzers that will detect when a signal has changed states more than one time between samples.
What is glitch detect?
The attenuation setting that should be used to measure a high frequency signals.
What is 10X attenuation?
This spectrum analyzer parameter affects the sweep time and the range of frequencies to be measured at one time.
What is resolution bandwidth?
The sum of all harmonic components compared against the fundamental component.
What is total harmonic distortion?
The requirements for equivalent time sampling.
What is a repetitive waveform with a stable trigger event?
A technique used to maximize memory by only storing when a signal changes.
What is transitional sampling?
This method of measuring phase requires using X-Y mode.
What is the Lissajous method?
Real-time spectrum analyzers include these two distinct types.
What are bank-of-filters and FFT spectrum analyzers?
The harmonics that equal zero in a pulse train is dependent are based on this parameter.
What is duty cycle?