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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 GROUP_OCCULTING Rhythmic, in which the total duration of light in a period is clearly longer than the total duration of darkness, and the long duration light periods are separated by a single short duration light period; group-occulting. 16 IR [FACC, Annex B, CHA:10]  
STD
2005/06/07		 LIGHT_PATTERN GROUP_QUICK_FLASH Rhythmic, exhibiting very rapid regular alternations of light and darkness, with a repetition rate of not less than 50 flashes per minute but less than 80 flashes per minute, is interrupted by regularly repeated eclipses of constant and short duration; group quick-flash. 17 IR [FACC, Annex B, CHA:28]  
STD
2005/06/07		 LIGHT_PATTERN GROUP_VERY_QUICK Rhythmic, exhibiting very rapid regular alternations of light and darkness, with a repetition rate of not less than 80 flashes per minute but less than 160 flashes per minute, is interrupted by regularly repeated eclipses of constant and short duration; group very quick-flash. 18 IR [FACC, Annex B, CHA:29]  
STD
2005/06/07		 LIGHT_PATTERN INTENSIFIED Intensified. 19 IR [FACC, Annex B, CHA:33]  
STD
2005/06/07		 LIGHT_PATTERN INTERRUPTED_QUICK_FLASH Rhythmic, in which the sequence of flashes, with a repetition rate of not less than 50 flashes per minute but less than 80 flashes per minute, is interrupted by regularly repeated eclipses of constant and long duration; interrupted quick-flash. 20 PR [S57A, Attribute, LITCHR:9]  
Group membership:

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