Keterangan :

POWER SUPPLY BOSCH LBB 3310/ 30

1 Mains On/ Off switch.
2 MP3 recorder ( for more information, see section 7) .
3 Microphone-mode switch. Open mode with auto switch-off. To select the maximum number of delegate microphones to be activated simultaneously ( 1, 2, 3 or 4) . The microphone automatically switches off if the speaker does not speak for 30 seconds. The microphone can manually be switched off by pushing the button on the delegate unit. Open mode. To select the maximum number of delegate microphones to be activated simultaneously ( 1, 2, 3 or 4) . The microphone must be switched on or off manually by pushing the button on the delegate unit. Override mode. Only one delegate microphone can be activated. If a new delegate presses his microphone button, the microphone
unit of the current speaker will be switched off. Chairman only mode. Only the chairman
units can be activated. Test mode. For proper installation check. All the light-rings and LED' s of the connected units will lit, if properly connected.
4 Speaker volume control of all connected delegate and chairman units.
5 Volume control of the speaker or headphone of the CU.
6 Headphone connection with 3.5 mm stereo jack plug socket.
7 Trunk output 1 and 2. For loopthrough connection of the delegate and chairman units. To each output a maximum of 25 units can be connected. The maximum length of cable between the outputs of the CU and the last unit in the system is 100 m ( 328 ft) .
8 Microphone input with gain adjustment for external microphone. The external microphone will be muted when the priority button on the chairman unit is pressed.
9 Recorder input with gain control and recorder output connection.
10 Line input and output for connecting a PA-system or other audio equipment.
11 Telephone coupler input and output for connecting a remote participant.
12 Insertion connection. To connect an external audio equalizer for speech quality improvement under difficult acoustic conditions ( 1 = without equalizer, 0 = insertion connection is internally open, providing means to connect an external equalizer in
the path from microphone signals to delegate/ chairman loudspeakers) .
13 USB connector. Used for downloading recorded speech to a PC ( optional) .
14. Digital Accoustic Feedback Suppresion