Toa FS-971 SERIES - Manual (Page 6)

6
2.2.2. Connections of multiple remote control units
When connecting two or more remote control units, be sure to branch each cable at the main rack.
Remote control unit Remote control unit Remote control unit Main rack
Main rack Remote control unit
Remote control unit
Remote control unit
Main rack
Remote control unit
Remote control unit
Total distance of (a) and (b) is shorter than 800 m.
(a)
(b)
Up to eight remote control units can be connected per system. However, when the system includes the
remote control unit of the type that receives power from the main rack, the additional emergency power supply
(p. 24 of Installation Manual - Basic Installation) and the expansion DC power supply (p. 35 of Basic
Installation) may have to be installed in the main rack.
Junction Panel JP-0410 comes with four Emergency RM BUS terminals to control communications with the
remote control unit. Note that up to two remote control units can be connected per terminal, and that the total
distance between the main rack and two remote control units must be shorter than 800 m.
A maximum of two remote control units can be connected per RM BUS terminal.
The JP-0410 is equipped with four Emergency RM Audio Input terminals for audio output from the remote
control unit. Only a maximum of two remote control units can be connected per audio input terminal.