Gain - Refers to the degree of signal amplification.
GAP - Refer to Generic Access Profile
Gauge - The diameter of a wire, size. The higher the number, the thinner the wire.
GEM - Generic Electronic (Control) Module
General Packet Radio Service (GPRS) - A packet technology approach that enables high-speed wireless Internet and other GSM-based data communications. It makes very efficient use of available radio spectrum for transmission of data.
Generator - A rotating machine that produces DC electricity. Also an electronic device used for converting DC voltage into AC of a given frequency and wave shape.
Generic Access Profile (GAP) - This profile defines the generic procedures related to the discovery of Bluetooth devices. It also defines procedures related to use of different security levels. Often this is thought of as the path of how two compatible Bluetooth devices “shake hands” and connect.
Generic Object Exchange Profile (GOEP) - This profile defines the basic requirements for Bluetooth devices intended for exchanging data in applications like synchronization, file transfer, or “pushing” data from one device into another, particularly in PDAs or PDA type phones. Also it’s used in imaging and printing Bluetooth transfer applications.
Giga - Prefix meaning 109 or 1,000,000,000 (1 billion in the US).
Gigabit Video Interface (GVIF) - A type of digital video signal, originally developed by Sony, that is used between devices such as navigation systems and an in-dash video screen.
Glass Sensor - A device designed to detect the sound of breaking glass or metal to glass contact, thus triggering a security system. Also called sound sensors, glass-break sensors, or sound discriminators.
Global Positioning System - A system of 24 satellites maintained by the US government orbiting the earth that each broadcast unique position data to compatible GPS receivers. Data from at least three satellites must be received to triangulate the exact longitude and latitude (X-Y) location of the GPS device. A fourth GPS satellite is necessary to accurately determine elevation/altitude (Z).
Global System for Mobile Communication - The United States offers GSM in the 1800 MHz bandwidth. Many network providers use GSM.
GOEP - Refer to Generic Object Exchange Profile
Golden Ratio - A ratio of height to width to length, where the width is approximately 1.6 times the height, and the length approximately 2.6 times the height. First calculated by the ancient Greeks, this ratio (known mathematically as “phi”) is used as an optimal ratio in many applications, including room dimensions and studio design (to achieve “optimal acoustics” in the room), and even in the design of certain acoustic instruments.
Gold Plate - This process is often used in electronics, to provide a corrosion-resistant electrically conductive layer on copper, typically in electrical connectors and printed circuit boards. ... Both the nickel and gold layers can be plated by electrolytic or electroless processes.
Googol - A googol is the number 10100, that is, 1 followed by one hundred zeroes.
GPRS - Refer to General Packet Radio Service
GPS - Refer to Global Positioning System
Gross Vehicle Weight (GVW) – The total weight of the loaded vehicle, including chassis, body and payload. Also known as Gross Vehicle Weight Rating (GVWR).
Ground - An electrical line with the same electrical potential as the chassis of the vehicle, most commonly negative 12 volts DC.
Ground Loop - The condition created when two or more paths for electricity are created in a ground line, or when one or more paths are created in a shield or an audio cable. This can create undesirable noise such as a high pitched whine when the vehicle is running or pops and clicks when other devices are used in the vehicle.
Ground Loop Isolator (GLI) - In an electrical system, a ground loop or earth loop occurs when two points of a circuit intended to be at ground reference potential are at different potentials.
Ground Potential - In electrical engineering, earth potential rise (EPR) also called ground potential rise (GPR) occurs when a large current flows to earth through an earth grid impedance. In an automobile this is the electrical potential of the vehicles chassis, specifically the chassis of the alternator when the vehicle is running. A circuit, terminal or chassis is said to be at ground potential when it is used as a reference point for other potentials in the system.
Ground While Running (GWR) - This is a circuit on a remote start or security system that sees ground while the vehicle is running.
Group Delay - The group delay of a filter is a measurement of the average delay of the filter as a function of frequency. It is the negative first derivative of a filter's phase response.
GSM - Refer to Global System for Mobile Communication
GWR - Refer to Ground While Running
GVIF - Refer to Gigabit Video Interface