IEEE Transactions on Instrumentation and Measurement · 1997 · 31 citations · 8 references
EngineeringElectrical EngineeringAnalog ElectronicsInstrumentationMicroelectronicsAnalog InstrumentationAnalog Integrated CircuitsDigital InstrumentationDigital Signal ProcessingElectrical MeasurementNoise In Analog CircuitsComparator DesignInstrumentation Error SourcesMeasurement UpdateSamplingSampling RatesSampling SchemesSignal Sampling
A high-accuracy sampling voltmeter, designed to span the frequency range of 10 Hz-200 MHz, is described. The instrument operates autonomously, at a measurement update rate of at least one per second. A novel quasiequivalent time sampling process is used, with a custom strobed comparator as the sampling device and decision element. The architecture and control are presented, along with the time-base design principles. Major error sources associated with the time-base are also discussed.
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