This figure represents the BG-1120.
5. NOMENCLATURE AND FUNCTIONS
[Front]
1. Power switch [ ON / OFF]
Power is switched on and off with each depression
of this switch.
Note
The amplifier comes into operation about 3
seconds after the power has been switched on.
2. Power indicator [POWER]
Lights green when the Power switch (1) is switched
on.
3. Signal level indicator [SIGNAL]
Lights green when the speaker output level
exceeds 20 dB.
4. Peak indicator [PEAK]
Lights red if output signals approach clipping level.
If steady lit, turn down the corresponding Input
volume control until the indicator flashes only
intermittently.
5. Microphone input volume control [MIC]
Adjusts gain of microphone input.
Turn the knob clockwise to increase the level and
counterclockwise to decrease it.
6. Telephone paging input volume control [TEL]
Adjusts gain of telephone paging input.
Turn the knob clockwise to increase the level and
counterclockwise to decrease it.
7. Program input volume control [PROGRAM]
Adjusts gain of program input.
Turn the knob clockwise to increase the level and
counterclockwise to decrease it.
8. AUX input volume control [AUX]
Adjusts gain of AUX input.
Turn the knob clockwise to increase the level and
counterclockwise to decrease it.
9. Module input volume control [MODULE]
Adjusts gain of Module input.
Turn the knob clockwise to increase the level and
counterclockwise to decrease it.
Protection function to be noted on operation
When the temperature of unit's internal heat sink exceeds the specified limit, the protection circuit
disconnects the output from the inner circuit. Output is automatically restored when the heat sink cools
down below the temperature limit.
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