loop-up signal

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• loop aerial — An aerial designed for direction finding use and normally used in airborne direction finding equipment. A vertical polarized radio wave incident upon the loop induces voltage in the vertical members of the loop. The signal induced voltage will… …   Aviation dictionary

• Signal timing — is the technique which traffic engineers use to determine who has the right of way at an intersection. Signal timing involves deciding how much green time the traffic lights shall provide at an intersection approach, how long the pedestrian WALK… …   Wikipedia

• Signal-flow graph — A signal flow graph (SFG) is a special type of block diagram[1] and directed graph consisting of nodes and branches. Its nodes are the variables of a set of linear algebraic relations. An SFG can only represent multiplications and additions.… …   Wikipedia

• Loop antenna — A shortwave loop antenna A loop antenna is a radio antenna consisting of a loop (or loops) of wire, tubing, or other electrical conductor with its ends connected to a balanced transmission line. Within this physical description there are two very …   Wikipedia

• Loop start — In telecommunications, a loop start is a supervisory signal given by a telephone or PBX in response to the completion of the loop circuit, commonly referred to as off hook . When idle, or on hook , the loop is at 48V DC (provided by the CO or FXS …   Wikipedia

• Loop — A loop is generally something that closes back on itself such as a circle. The closing can appear in time or in space.cience and technology*Loop (algebra), a quasigroup with an identity element *Loop (graph theory), an edge that begins and ends… …   Wikipedia

• Loop gain — In negative feedback amplifiers, loop gain refers to the product of the gain in the feedback loop and the feedback factor in that loop. In Figure 1, the loop gain is the product β A OL.In telecommunication, the term loop gain has the following… …   Wikipedia

• Signal conditioning — In electronics, signal conditioning means manipulating an analogue signal in such a way that it meets the requirements of the next stage for further processing. For example, the output of an electronic temperature sensor, which is probably in the …   Wikipedia

• loop transfer function — noun The ratio of the Laplace transform of the primary feedback signal of a control system to that of the actuating signal Syn: loop ratio …   Wiktionary

• Loop-through (loop-thru, looping) — A&V A type of video input circuit that provides two or more input connectors. One connector accepts the video input signal for use within the device in question, and the other connector provides a tap off of the input for routing the input signal …   Audio and video glossary

• loop-start —    Supervisory signal, initiated by an off hook telephone, received at the PBX or local exchange that closes a DC loop and initiates service …   IT glossary of terms, acronyms and abbreviations