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Glossary <br /> AST Aboveground Storage Tank <br /> annunciator An electrically controlled signal <br /> asynchronous A mode of data transmission in which the time occurrence of the bits within each character or <br /> block of characters relates to a fixed time frame,but the start of each character or block of <br /> characters is not related to this fixed time frame. <br /> auxiliary port Output-only serial port used for remotely polling an additional console(s)through the first <br /> console. <br /> baud A unit of signaling speed equal to the number of discrete signal conditions or events per sec- <br /> ond.For two devices to communicate they must be set to transmit/receive at the same baud <br /> rate. <br /> bit rate The speed at which data bits are transmitted over a communication path,usually expressed in <br /> bits per second. A 9600 bps terminal is a 2400 baud system with 4 bits/baud. <br /> board A printed circuit board, such as the CPU and ECPU. <br /> Business The process of reconciling product dispensed with product received(deliveries),and product <br /> Inventory remaining in the tank. <br /> Reconciliation <br /> (BIR) <br /> CDIM Current loop Dispenser Interface Module <br /> CPU board Central Processing Unit printed circuit board <br /> chip Another term for an integrated circuit(see IC) <br /> coefficient of The amount of contraction or expansion that will occur with temperature changes in a spe- <br /> thermal expansion cific liquid. <br /> communications Data transmissions between two or more pieces of equipment. <br /> component Any resistor,capacitor,IC,etc.,soldered onto a printed circuit board <br /> configuration Relative arrangement of parts of a system. <br /> containment Sump An enclosure used to contain submersible pumps and related piping to prevent the release of <br /> product into the environment. <br /> Continuous CSLD eliminates the need to shut down the station to run in-tank leak tests.Height data is col- <br /> Statistical Leak lected during idle times and new tank information is used to produce highly accurate leak <br /> Detection(CSLD) detection results. <br /> data Information collected by the console. <br /> default parameter System set-up parameter that is preset by the factory. <br /> setting <br /> • diagnostics Indicators of the current conditions in the system. <br /> Glossary-1 <br />