Forward echo

Forward echo

Forward echo: In a transmission line, a reflection propagating in the same direction as the original wave and consisting of energy reflected back by one discontinuity and then forward again by another discontinuity. Forward echoes can be supported by reflections caused by splices or other discontinuities in the transmission medium (e.g. optical fiber, twisted pair, or coaxial tube). In metallic lines, they may be supported by impedance mismatches between the source or load and the characteristic impedance of the transmission medium. They may cause attenuation distortion.

Source: from Federal Standard 1037C and from MIL-STD-188


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Forward operating base — Logar, Afghanistan. A forward operating base (FOB) is any secured forward military position, commonly a military base, that is used to support tactical operations. A FOB may or may not contain an airfield, hospital, or other facilities. The base… …   Wikipedia

  • Echo cancellation — The term echo cancellation is used in telephony to describe the process of removing echo from a voice communication in order to improve voice quality on a telephone call. In addition to improving subjective quality, this process increases the… …   Wikipedia

  • Forward Operating Base Abu Ghraib — FOB Abu Ghraib was a United States Army Forward Operating Base in the city of Abu Ghraib, Iraq. The FOB housed the Abu Ghraib prison, holding over 7,000 detainees during its peak in 2004. FOB Abu Ghraib (BGN/PCGN romanization: Abū Ghurayb; أبو… …   Wikipedia

  • Pre-echo — is an audio compression artifact where a sound is heard before it occurs (hence the name). It is most noticeable in impulsive sounds from percussion instruments such as castanets or cymbals.It occurs in audio compression algorithms which use… …   Wikipedia

  • Sunderland Echo — Infobox Newspaper name = Sunderland Echo caption = The paper s 1 July 2008 front page latitude = 54.9004 longitude = 1.4076 type = Daily newspaper format = Tabloid foundation = 22 December 1873 (as The Sunderland Echo and Shipping Gazette ) price …   Wikipedia

  • Light echo — A light echo is a phenomenon observed in astronomy. Analogous to an echo of sound, a light echo is produced when a sudden flash or burst of light, such as that observed in novae, is reflected off a source and arrives at the viewer some time after …   Wikipedia

  • The Echo Maker — infobox Book | name = The Echo Maker title orig = translator = caption = Cover of first edition hardback author = Richard Powers illustrator = cover artist = country = United States language = English series = genre = Novel publisher = Farrar,… …   Wikipedia

  • La Chambre D'Echo - Where the dead Birds sing — Infobox Album | Name = La Chambre D Echo Where the dead Birds sing Type = studio Artist = Sopor Aeternus The Ensemble of Shadows Released = 2004 Recorded = Genre = Darkwave Length = 71:58 Label = Apocalyptic Vision Producer = Anna Varney, John A …   Wikipedia

  • The Echo, the Arrow and the Chain — is a dance play by the Japanese choreographer Ikuyo Kuroda. As of 2008, it is regularly shown on at the Helsinki City Theatre in Helsinki, Finland.Plot The Echo, the Arrow and the Chain is performed by six dancer/actors, two men and four women.… …   Wikipedia

  • Signal reflection — occurs when a signal is transmitted along a transmission medium, such as a copper cable or an optical fiber, some of the signal power may be reflected back to its origin rather than being carried all the way along the cable to the far end. This… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”