Clock Time Standards

This SIN applies to all Network Rail maintainers who have a responsibility for telecoms operational and non operational equipment dependent on the MSF Clock signal. The purpose of this SIN is to address all MSF dependent systems over the 6 months following the MSF change to Anthorn. Cab...

There is a desire for some applications to relate the time code time address to clock system time and to use this time code as a clock time reference. This guideline is specifically applicable to video systems operating at a frame rate of 30/1.001 Hz...

This Recommendation specifies minimum requirements for time and phase synchronization devices used in synchronization network equipment that operates in the network architecture as defined in [ITU-T G.8271], [ITU-T G.8271.1] and [ITU-T G.8275]. It supports time and/or phase...

This Recommendation specifies minimum requirements for time and phase synchronization equipment used in synchronization networks that operates in the assisted partial timing support (APTS) and partial timing support (PTS) architectures. The APTS and PTS architectures are specified in [ITU-T...

This Recommendation specifies minimum requirements for time and phase synchronization equipment used in synchronization networks that operates in the assisted partial timing support (APTS) and partial timing support (PTS) architectures. The APTS and PTS architectures are specified in [ITU-T...

This drawing documents two product assurance class levels consisting of high reliability (device classes Q and M) and space application (device class V). A choice of case outlines and lead finishes are available and are reflected in the Part or Identifying Number (PIN). When available, a choice of...

This standard applies to clocks for automobiles that indicate the time with a series of numbers (or graphics) on the liquid crystal (hereinafter called "LCD type") and the fluorescent character display tube (hereinafter called "VFD Type") based on the oscillation frequency of the...

This Standard applies to clock-operated switches, rated 600 V or less, designed to be used in ordinary locations to close and open circuits to a load at predetermined intervals, and intended to be employed in accordance with the Rules of the Canadian Electrical Code, Part I. The...

This specification details the BR requirements for clock systems for operational purposes. These clocks will be used to display time to the general public and to staff involved in the running of trains. The clocks are required to be highly reliable in operation and...

This Specification details the Substation Control System (SCS) Interface requirements to a radio co-sited clock. The areas covered by this specification are:- (i) The time and date information required by the SCS. (ii) Clock failure fallback operation. (iii) Half hourly...

Determining the precise timing for the evolutionary origin of groups of organisms has become increasingly important as scientists from diverse disciplines attempt to examine rates of anatomical or molecular evolution and correlate intrinsic biological events to extrinsic environmental events....

ul-917.5 Clock-Operated Switches UL 917 1 Scope 1.1 These requirements cover clock-operated switches rated 600 V or less, to be used in ordinary locations designed to close and open circuits to a load at predetermined intervals, and intended to be employed in accordance with the...