ncing over non quality-of-service guaranteed LANs. An increase in the strength of an electrical signal; measured in decibels. gamma A display characteristic of CRTs defined in the following formula: light = volts gamma. Gamma values range in CRTs, with most ranging between 2.25 and 2.45. A digital logic component whose output state depends on the states of the logic signals presented to its inputs. Gigabit Interface Converter generic Applicable to a broad range of applications, i.e., application independent. Genlock Short for generator locking device, a genlock is a device that enables a composite video system (e.g., a television) to accept two signals simultaneously. A genlock holds on to one set of signals while it processes a second set. This allows the combination of signals (video and graphics) into a single stream of video. Traditionally, genlock allowed multiple devices (video recorders, cameras, etc.) to be used together with precise timing SO that they captured a scene in unison. geostationary satellite A satellite whose orbital speed is matched or Video Communication: the Whole Picture synchronized with respect to the earth's rotation SO that the satellite remains fixed, relative to a specific point on the earth's surface. geosynchronous orbit A satellite orbit that is synchronous with a point on the earth's surface. An orbit, approximately 22,500 miles above the earth's equator, where satellites circle at the same speed as the rotation of the earth, and thereby appear stationary to an earth bound observer. ghost A duplicate shadowy image set off slightly from the primary picture image. Graphical Interchange Format, a commonly-used graphics file format for transferring image files over a network. A prefix denoting a factor of 10°, abbreviated GHz. Gigabit Interface Converter An interface for attaching network devices to fiber- based transmission systems (e.g., Fibre Channel or Gigabit Ethernet). GBICs convert serial electrical signals to serial optical signals and vice versa. GBIC modules contain ID and