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EA:  LIGHT_PATTERN

Status: STD 2005/06/07
Code: 576
Concept definition: The type of sequence, grouping, and/or distinctive character of a <LIGHT>; light pattern.
 
Attribute value type: ENUMERATION
Reference type: IR
Reference: [FACC, Annex B: CHA]
Supplemental references:  
Enumerants (presented in a natural order)
Status Attribute label Enumerant label ▾ Concept definition Code Ref type Reference Supplemental references
STD
2005/06/07		 LIGHT_PATTERN INTERRUPTED_ULTRA_QUICK Rhythmic, in which the ultra quick flashes (160 or more per minute) are interrupted at regular intervals by eclipses of long duration; interrupted ultra quick-flash. 21 PR [S57A, Attribute, LITCHR:11]  
STD
2005/06/07		 LIGHT_PATTERN INTERRUPTED_VERY_QUICK Rhythmic, in which the very rapid alterations of light and darkness are interrupted at regular intervals by eclipses of long duration; interrupted very quick-flash. 22 PR [S57A, Attribute, LITCHR:10]  
STD
2005/06/07		 LIGHT_PATTERN ISOPHASE Rhythmic, with all durations of light and darkness equal; isophase. 23 PR [S57A, Attribute, LITCHR:7]  
STD
2005/06/07		 LIGHT_PATTERN LIGHTED Lighted. 24 IR [FACC, Annex B, CHA:21]  
STD
2005/06/07		 LIGHT_PATTERN LONG_FLASHING Rhythmic, in which a single flash of not less than two seconds duration is regularly repeated; long-flashing. 25 PR [S57A, Attribute, LITCHR:3]  
STD
2005/06/07		 LIGHT_PATTERN LONG_FLASHING_ALTERNATING <<<LONG_FLASHING>>> but alternating in two or more colours; long-flashing alternating. 26 PR [S57A, Attribute, LITCHR:17]  
STD
2005/06/07		 LIGHT_PATTERN MORSE_CODE Rhythmic, in which appearances of light of two clearly different durations are grouped to represent a character or characters in the Morse code. 27 PR [S57A, Attribute, LITCHR:12]  
STD
2005/06/07		 LIGHT_PATTERN OCCULTING Rhythmic, in which the total duration of light in a period is clearly longer than the total duration of darkness and all the eclipses are of equal duration; occulting. 28 PR [S57A, Attribute, LITCHR:8]  
STD
2005/06/07		 LIGHT_PATTERN OCCULTING_ALTERNATING <<<OCCULTING>>> but alternating in two or more colours; occulting alternating. 29 PR [S57A, Attribute, LITCHR:17]  
STD
2005/06/07		 LIGHT_PATTERN OCCULTING_FLASH <<<OCCULTING>>>, superimposed on which is a <<<FLASHING>>> light; occulting/flash. 30 IR [S57A, Attribute, LITCHR:15] [FACC, Annex B, CHA:47]
Group membership:

In addition to the status and date information for each entry, a colour coding scheme highlights the database holding to which an entry belongs. The following highlight colours are used:

  • white - the entry is in the standard
  • yellow - the entry has been added to the register
  • pink - the entry has been submitted for inclusion in the register, but it is not approved
  • cyan - a deprecated entry that was originally either in the standard or was added to the register, but has since been deprecated

The following icons are used to identify items that have figures, modifications and/or clarification notes:

  • F n - has Figures and, if more than one figure, n figures
  • M - has Modifications
  • C - has Clarifications

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