- Industry: Telecommunications
- Number of terms: 29235
- Number of blossaries: 0
- Company Profile:
ATIS is the leading technical planning and standards development organization committed to the rapid development of global, market-driven standards for the information, entertainment and communications industry.
The angle, with respect to the normal, at which a light ray emerges from a surface. 2. The beam divergence at an emitting surface, such as that of a light-emitting diode (LED,) laser, lens, prism, or optical fiber end face. 3. At an end face of an optical fiber, the angle between an input ray and the fiber axis. Note: If the end face of the fiber is perpendicular to the fiber axis, the launch angle is equal to the incidence angle when the ray is external to the fiber and the refraction angle when initially inside the fiber.
Industry:Telecommunications
The angle determined by the plane containing the orbit and the plane of the Earth's equator.
Industry:Telecommunications
The angle between the axis of the main lobe of an antenna pattern and the horizontal plane at the transmitting antenna. Synonym takeoff angle.
Industry:Telecommunications
The angle between an incident ray and the normal to a reflecting or refracting surface.
Industry:Telecommunications
The analytical processes for estimating how well network services will be affected and restored with transparencies to the users as a result of a failure.
Industry:Telecommunications
The amount of transmitter power above that which is computed by the link designer as the minimum required to meet specified link performance. Note: The rf power margin allows for uncertainties in (a) empirical components of the signal level prediction method, (b) terrain characteristics, (c) atmospheric conditions, and (d) equipment performance parameters. 2. At any given time in an operational link, the reserve transmitter power over that which is required to maintain specified link performance.
Industry:Telecommunications
The amount of time that a terminal (client) is being served by a network. Note: Connect time can refer to either the total amount of time that the terminal is connected to the network or just the amount of time that the terminal actually transmits or receives data.
Industry:Telecommunications
The amount of time required to transmit a logical one or a logical zero.
Industry:Telecommunications
The amount of time by which an event is retarded. 2. The time between the instant at which a given event occurs and the instant at which a related aspect of that event occurs. Note 1: The events, relationships, and aspects of the entity being delayed must be precisely specified. Note 2: Total delay may be demonstrated by the impulse response of a device or system. Note 3: In analog systems, total delay is described in terms of the transfer functions in the frequency domain. Synonym delay time. 3. In radar, the electronic delay of the start of the time base used to select a particular segment of the total.
Industry:Telecommunications
The amount of thermal noise power on a frequency-division multiplexed (FDM) or wire channel necessary to approximate the same judgment of speech quality created by quantizing noise in a PCM channel. Note 1: The speech quality judgment is based on comparative tests. Note 2: Generally, 33. 5 dBrnC ±2. 5 dB is considered the approximate equivalent PCM noise of a 7-bit PCM system.
Industry:Telecommunications
