for those of you that are new(to catv industry) public access channels and modems and ect... are t channels running in the sub band to transport back to were they need to go I.E. the cmts or point of redistribution ect. the 1750 is the better used meter for this work contractors dont usually do this type of work for the carrier however. (more specific detail and training is required) note this is a readers digest explanation of return systems.
This is CABL.com posting #276457. Tiny Link: cabl.co/mbj49