ANSI INCITS TR-29-2002 pdf download Information Technology – SCSI Signal Modeling (SSM)
4.1.2 Admittance: In an n-terminal network, the complex current flowing to the i-th terminal divided by the complex voltage applied between the j-th terminal with respect to the reference point when all other terminals have arbitrary terminations. The inverse of impedance.
4.1.3 American Wire Gauge: Formerly the Brown & Sharpe Gage, the standard gauge for copper, aluminum, and other conductors except steel.
4.1.4 Assembly: A subordinate element of a system that is comprised of two or more components
4.1.5 Asserted: Having a current value equal to a logic 1.
4.1.6 Attenuation: 1) A general term used to denote a decrease in signal magnitude from one point to another. Attenuation may be expressed as a scalar ratio of the input magnitude to the output magnitude or in decibels as 20 times the log of that ratio. 2) The reciprocal of gain.
4.1.7 Backplane: The printed circuit board that contains the interconnect traces and connectors, into which boards or plug-in units are inserted.
4.1.8 Balanced: 1) The state of impedance on a two-wire circuit when the impedance-to-ground of one wire is equal from the impedance-to-ground of the other wire. 2) A circuit, in which two branches are electrically alike and symmetrical with respect to a common reference point, usually ground.
4.1.9 Buffer: In the sense of the IBIS standard, an isolating circuit used to prevent a driven circuit from influencing a driving circuit. A transceiver, see 4.1.101.
4.1.10 Bulk cable: Cable that has no connectors attached or is not readied for connector attachment.
4.1.11 Bus: A signal line or a set of lines used by an interface system to connect a number of devices and transfer data.
4.1.12 Cable assembly: A cable that is connector terminated. Generally, a cable that has been terminated by a manufacturer and is ready for installation.
4.1.13 Capacitive coupling: The type of coupling in which the mechanism is capacitance between the interference source, and the signal system; that is, the interference is induced in the signal system by an electric field produced by the interfering source.
4.1.14 Circuit: An interconnection of electrical components.
4.1.15 Circuit element: A basic constituent part of a circuit, exclusive of interconnections. A component.
4.1.16 Common-mode: The instantaneous algebraic average of two signals applied to a balanced circuit, both signals referred to a common reference.
4.1.17 Common-mode noise: The noise voltage that appears equally and in phase from each signal conductor to ground.
4.1.18 Component: Items from which a system, assembly, or sub-assembly is assembled; for example, resistors, capacitors, inductors, semiconductors, etc. A circuit element.
4.1.19 Complementary metal oxide semiconductor: A semiconductor technology in which circuits are composed of paired NMOS and PMOS devices. 4.1.20 Complex dielectric constant: The complex permittivity of a physical medium in ration to the permittivity of free space.