See block distortion.

1. An epoch, i.e., the designation of an instant on a selected time scale, astronomical or atomic. It is used in the sense of time of day [JP1]
2. On a time scale, the interval between two events, or the duration of an event.
3. An apparently irreversible continuum of ordered events.
4. That which characterizes, or is characterized by,… (Read More →)

The level of agreement of the time of a clock compared to an ideal source of time such as coordinated universal time (UTC time). This is specified as the magnitude of the time offset from the ideal source:
Time accuracy = |t – ti|
where:
t = the time from the clock in question
ti = the ideal time

A situation in which more than one different time or time measurement can be obtained under the stated conditions.

Synonym circuit reliability.

An arbitrary grouping of several consecutive hours of a day, usually for a particular season, during which it is assumed that propagation data are statistically homogeneous.

1. In COMSEC, a logic bomb to be activated at a predetermined time. [2382-pt.8]
2. [A] resident computer program that triggers an unauthorized act at a predefined time. [INFOSEC-99]

A code used for the transmission and identification of time signals.
Note: In telecommunications systems, the format of the time code must be specified.

The shortest interval between successive repetitions of the same time code value.
Note: For example, in a time code in which year-of-century is the most slowly changing field, the time code ambiguity would be 100 years; for a digital clock in which hours and minutes up to a maximum of 11:59 are displayed, the time code ambiguity would be 12… (Read More →)

The interval between two successive time code states.
Note: Time code resolution is determined by the most rapidly changing symbol position within the time code. For example, for a digital clock that displays hours and minutes, the time code resolution would be 1 minute.