System Architecture Evolution

[A] statement affixed to a computer output or printout that states the highest classification being processed at the time the product was produced and requires control of the product, at that level, until determination of the true classification by an authorized person. Synonym [in INFOSEC] banner. [INFOSEC-99]

Any radiocommunication service used permanently or temporarily for the safeguarding of human life and property. [NTIA] [RR]

Service Area Interface (also called crossbox, FDI, JWI)

Key intended for off-the-air demonstration use only. [INFOSEC-99]

Data in which the information content exists only for instantaneous values measured or determined at or for discrete intervals.
Note: Sampled data can be analog or digital. [After SMPTE]

See signal sampling.

See sampling rate.

The reciprocal of the sampling rate, i.e., the interval between corresponding points on two successive sampling pulses of the sampling signal.

The number of samples taken per unit time, i.e., the rate at which signals are sampled for subsequent use, such as for modulation, coding, and quantization. Deprecated synonym sampling frequency.