PUBLIC ADDRESS SYSTEM AND MONITORING DEVICE FOR A PUBLIC ADDRESS SYSTEM

摘要

The public address system 1 comprises a transmission medium (4) including a main transmission path (4-1) and at least one branch transmission path (4-2) branching from the main transmission path (4-1), a plurality of loudspeakers (3) connected to the transmission medium (4), a first branch monitoring device (10a), and a second branch monitoring device (10b). The second branch monitoring device (10b) only transmits a transmission signal (S-2) from the main transmission path (4-1) into the branch transmission path (4-2) when the second branch monitoring device (10b) has detected that there is no transmission of the transmission signal (S-1) from the branch transmission path (4-2) to the second branch monitoring device (10b).