enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Time-domain reflectometer - Wikipedia

   en.wikipedia.org/wiki/Time-domain_reflectometer

   A time-domain reflectometer (TDR) is an electronic instrument used to determine the characteristics of electrical lines by observing reflected pulses. It can be used to characterize and locate faults in metallic cables (for example, twisted pair wire or coaxial cable ), [ 1 ] and to locate discontinuities in a connector, printed circuit board ...

3. Reflections of signals on conducting lines - Wikipedia

   en.wikipedia.org/wiki/Reflections_of_signals_on...

   A time-domain reflectometer; an instrument used to locate the position of faults on lines from the time taken for a reflected wave to return from the discontinuity.. A signal travelling along an electrical transmission line will be partly, or wholly, reflected back in the opposite direction when the travelling signal encounters a discontinuity in the characteristic impedance of the line, or if ...

4. Optical time-domain reflectometer - Wikipedia

   en.wikipedia.org/wiki/Optical_time-domain...

   An optical time-domain reflectometer (OTDR) is an optoelectronic instrument used to characterize an optical fiber. It is the optical equivalent of an electronic time domain reflectometer which measures the impedance of the cable or transmission line under test.

5. Reflectometry - Wikipedia

   en.wikipedia.org/wiki/Reflectometry

   In time-domain reflectometry (TDR), fast pulses are emitted, and the magnitude, duration and shape of the reflected pulses is analyzed. Frequency-domain reflectometry (FDR): [5] [6] this technique is based on the transmission of a set of stepped-frequency sine waves from the sample. As with TDR, these waves propagate to the sample and are ...

6. Time domain reflectometry - Wikipedia

   en.wikipedia.org/?title=Time_domain_reflectome...

   This page was last edited on 19 October 2019, at 17:52 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

7. Signal reflection - Wikipedia

   en.wikipedia.org/wiki/Signal_reflection

   Time-domain reflectometer for electrical cable fault detection. Because damage to the cable can cause reflections, an instrument called an electrical time-domain reflectometer (ETDR; for electrical cables) or an optical time-domain reflectometer (OTDR; for optical cables) can be used to locate the damaged part of a cable. These instruments work ...

8. Distributed acoustic sensing - Wikipedia

   en.wikipedia.org/wiki/Distributed_acoustic_sensing

   Phase-sensitive coherent optical time-domain reflectometry (ϕ-OTDR) is a technique that can provide sufficient sensitivity and resolution for these distributed acoustic sensing systems. [2] Standard optical time-domain reflectometry techniques use light sources with coherence lengths, which are shorter than pulse lengths. This can yield a sum ...

9. Reflectometer - Wikipedia

   en.wikipedia.org/wiki/Reflectometer

   Some scientific instruments commonly designated reflectometer are: . Vector network analyser (VNA); Optical time domain reflectometer; Reflectometer (electronics): In electronics, a directional coupler containing matched calibrated detectors in both arms of the auxiliary line, or a pair of single-detector couplers oriented so as to measure the electrical power flowing in both directions in the ...