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17. Manual Mute terminals
Closing between (+) and (–) terminals mutes the
input signal set for Mute Receive by the Function
switch B (24).
Opening between (+) and (–) terminals returns
the previously muted signal gradually to its
original level.
Notes
• This function is active regardless of the
Automatic mute ON/OFF settings using the
Function switch A (15).
• This function is not active for the MOH output
terminal.
18. Microphone input terminal
600 Ω , –60 dB*, electronically-balanced,
removable terminal block.
Connect a microphone.
19. Module input port
Accepts one of 900 series plug-in modules.
For the selection of the most appropriate module,
refer to Plug-in Module instruction manual.
20. Functional ground terminal
Hum noise may be generated when external
equipment is connected to the unit. Connecting
this terminal to the functional ground may reduce
the hum noise.
Note
This terminal is not for protective earth.
21. AC power cord
Connect this cord to an AC wall outlet.
22. Speaker output terminal
70 V output, removable terminal block.
Connects to speakers. Refer to p.10
23. Function switches B
Used for MOH Assignment and Mute Receive
function settings.
• DIP switch 1
Set to ON to place the MIC input in MUTE
Receive mode.
• DIP switch 2
Set to ON to place the LINE 1/TEL input in
Mute Receive mode.
• DIP switch 3
Set to ON to place the LINE 2 input in Mute
Receive mode.
• DIP switch 4
Set to ON to place the LINE 3 input in Mute
Receive mode.
• DIP switch 5
Set to ON to place the MODULE input in Mute
Receive mode.
• DIP switch 6
Set to ON to output the MIC input to the MOH
output.
8
• DIP switch 7
Set to ON to output the LINE 1/TEL input to the
MOH output.
• DIP switch 8
Set to ON to output the LINE 2 input to the
MOH output.
• DIP switch 9
Set to ON to output the LINE 3 input to the
MOH output.
• DIP switch 10
Set to ON to output the MODULE input to the
MOH output.
Notes
• Switches 1 – 10 are set to the OFF position by
default.
• Be sure to turn off the power before performing
above settings. Failure to do so may cause the
loud noise to be generated or unit failure.
24. MOH volume control
Adjusts the gain of the MOH output level (26)
25. MOH output terminal
600 Ω , 0 dB*, transformer-isolated, removable
terminal block.
By connecting the input terminal of the BA-235 or
BA-260, 2-channel broadcast can be made.
Refer to p.11.
Note: Bass and treble controls are not active for
this output.
26. Line output terminal
600 Ω , 0 dB*, unbalanced, removable terminal
block.
Note: Bass and treble controls are not active for
this output.
27. Remote volume terminal
Removable terminal block.
Connecting a 10 kΩ linear taper volume control
across these terminals will allow remote control
of speaker output level.
* 0 dB = 1 V
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