Attribute: Signal group
Attribute type: A
The number of signals, the combination of signals or the morse character(s) within one period of full sequence.
ENC Condition:# Must be encoded for all LIGHTS objects, that are not fixed lights.
INT 1: IP 10.2-9; IR 20, 22;
M-4: 453; 453.1-4; 471.2;
The signal group of a light is encoded using brackets to separate the individual groups. A group of signals may be a single number, a chain of numbers separated by "+", a sequence of up to 4 letters or a letter and a number.
A fixed light has no signal group.
Where no specific signal group is given for one of the light characteristics, this should be shown by an empty pair of brackets.
|Light characteristic||SIGGRP Indication|