The purpose of Time Warner Cable's digital adapter is to enable viewing of digital content using analogue TVs. Time Warner Cable has been delivering some channels digitally to its subscribers since 2012. Consequently, subscribers need a digital adapter for each of their analogue TVs to access the digital content.
TWC claims that digital distribution offers higher quality and consumes lower bandwidth as compared to analogue distribution; hence, the shift to digital transmission is justified. Some of the channels shifting to digital signals include CNBC, EWTN, The Weather Channel and educational, government and public access channels. TWC clients who use Set-Top boxes, retail CableCARD or the Roku device, however, do not require digital adapters for their TVs.