ANSI/SCTE 87-1 2008
The symbols for devices do not indicate types or model numbers of any manufacturer. Theyrepresent the function of the device operated within a cable system. The symbols permit easyaddition of model or type numbers within or near their outline. If such model or typedesignations are used, an explanation of these designations should be placed on a legend sheetfor the drawing on which the symbols appear.