Patent ID: 8903099

Claim:
An end-of-branch (EOB) module system for an audio signal distribution system having a wired trunk and a plurality of wired branches extending from such trunk, said EOB module system comprising: a. a plurality of EOB modules comprising one EOB module electronically coupled at each distal end of each branch and trunk of said audio signal distribution system, where each said EOB module of said plurality of EOB modules has a unique address together forming a plurality of unique addresses; b. a test system operable to send a test carrier signal encoded with any one unique address of said plurality of unique addresses at a time onto said trunk and branches; c. a switch within each said EOB module, responsive to its unique address to place an end-of-line (EOL) load on its respective branch or trunk; d. an amplifier for amplifying said test carrier signal before said test carrier signal is sent; and e. wherein said test system is further operable to automatically detect voltage variations in said amplifier responsive to said placement of said EOL load; and f. determine if said voltage variation is outside one of a predetermined voltage range.