time-domain reflectometer


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time-domain reflectometer

[′tīm də¦mān ‚rē‚flek′täm·əd·ər]
(electronics)
An instrument that measures the electrical characteristics of wideband transmission systems, subassemblies, components, and lines by feeding in a voltage step and displaying the superimposed reflected signals on an oscilloscope equipped with a suitable time-base sweep. Abbreviated TDR.
References in periodicals archive ?
Upon completion of the fiber optic installation, the selected vendor must test all single mode fiber at 1310nm and 1550nm wavelengths with an Anristu CMA-4500 Optical Time-Domain Reflectometer
The AQ7280 portable optical time-domain reflectometer (OTDR) delivers the combination of measurement automation, user-friendly operation, and reliable performance that enables fast, precise optical-fiber characterization in the field.
has launched software upgrades for their CT100 Series Time-Domain Reflectometer (TDR) cable testers and bundled CT Viewer(TM) TDR analysis software that add real-time Internet streaming and remote control for leverage of remote engineering expertise.
The TDR 100 is a time-domain reflectometer for measuring volumetric water content and bulk electrical conductivity in soil and other porous media.
Glossary ATM asynchronous transfer mode ELFEXT equal level far-end crosstalk FEXT far-end crosstalk ISDN integrated services digital network ISO International Organization for Standardization LAN local area network NEXT near-end crosstalk OSI open systems interconnection OTDR optical time domain reflectometer POTS plain old telephone service PSELFEXT power sum equal level far-end crosstalk PSNEXT power sum near-end crosstalk TDR time-domain reflectometer TIA Telecommunications Industry Association UTP unshielded twisted pair WAN wide area network
This (Army Engineer Waterways Experiment Station) report concerns the development, construction, and testing of a rugged self-calibrating time-domain reflectometer (TDR) instrument for monitoring groundwater elevations.
If your cable is installed in a ceiling or floor that is hard to get at, using a time-domain reflectometer can speed the process of locating faults.
It also includes new diagnostic and fault-location equipment, as well as information on digital multimeters, time-domain reflectometers, meggers and procedures for using the Eclypse ESP+ and 3M 900AST fault-location meters.

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