User Manual
6
1. Power switch
Power is switched on and off with each
depression of this switch.
2. Power indicator
Lights blue when the Power switch (1) is switched
on.
3. Microphone input volume control
Adjusts gain of the microphone input.
Turn the knob clockwise to increase the volume
and counterclockwise to decrease it.
Note
This control is not active for the MOH output
terminal (26).
4. Line 1/TEL input volume control
Adjusts gain of the Line 1 or TEL input.
Turn the knob clockwise to increase the volume
and counterclockwise to decrease it.
Refer to the Function switch (24) on the next page
to switch between Line 1 or TEL.
Note
This control is not active for the MOH output
terminal (26).
5. Line 2 input volume control
Adjusts gain of the Line 2 input.
Turn the knob clockwise to increase the volume
and counterclockwise to decrease it.
Note
This control is not active for the MOH output
terminal (26).
6. Line 3 input volume control
Adjusts gain of the Line 3 input.
Turn the knob clockwise to increase the volume
and counterclockwise to decrease it.
Note
This control is not active for the MOH output
terminal (26).
7. Module input volume control
Adjusts gain of the Module input.
Turn the knob clockwise to increase the volume
and counterclockwise to decrease it.
Note
This control is not active for the MOH output
terminal (26).
8. Signal level indicator
Lights green when audio signals are output from
the speaker output terminal.
9. Peak indicator
Lights red if output signals approach clipping
level. If steady lit, turn down the corresponding
input volume control until the indicator flashes
intermittently.
10. Bass control
Turn the knob clockwise to increase bass level
and counterclockwise to decrease it.
The center position of the control provides flat
frequency response.
11. Treble control
Turn the knob clockwise to increase treble level
and counterclockwise to decrease it.
The center position of the control provides flat
frequency response.
This figure represents the BG-2120.
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5. NOMENCLATURE AND FUNCTIONS
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