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Time Domain Reflectometry Theory. Application Note 1304-2. For Use with Agilent 86100 Infiniium DCA. Introduction. The most general approach to evaluating the time domain response of any electromagnetic system is to solve Maxwell’s equations in the time domain.
A time-domain reflectometer (TDR) is a measurement tool used to measure the impedance profile of a component (device) under test (DUT). The concept is straightforward. Using a step generator and an oscilloscope, a fast pulse edge is launched into the DUT.
A Time Domain Reflectometer is set up as shown in Figure 3. The step generator produces a positive going incident wave which is fed into the transmission system under test. The oscilloscope’s high imped- ance input bridges the transmission system at its junction with the step generator. The step travels
19 lut 2010 · TDR (time-domain reflectometry) minimizes probe errors. TDR is normally used to measure the length vs. impedance changes along a signal path. TDR is also a valuable tool for measuring propagation delays.
30 sty 2015 · designers prefer working in the time domain with logic analyzers and high-speed oscilloscopes. When compared to other measurement techniques, time domain reflectometry provides a more intuitive and direct look at the DUT’s characteristics.
This paper compares vector-network-analyzer- and oscilloscope-based time-domain reflectometers and their recent advances.
two major types of TDR are described here: short pulse time-domain, and step pulse time-domain. Each type is involved in measurements of discontinuities of various types of cables, and is used to evaluate measurement errors and limitations. I. Introduction A time-domain reflectometer is an instrument composed of a fast pulse generator and a broad-
