Aiphone BX-1200 User Manual
Page 11
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When the OVERLOAD indicator is lit, turn off the POWER and check the output circuit.When proper
operating conditions have been secured, turn the POWER on, and make sure OVERLOAD indicator is
off, otherwise recheck the output circuit.
Music Muting Control:
The voice activated microphone precedence control circuitry offers smooth and natural voice announce
ment.with reduced soft music in the background.
When announcements are made through microphones (MlC-1, MlC-2, MlC-3, MIC-4, PHONE), the
electronic precedence control circuit automatically alternates the level of the background music AM/FM
radio broadcast, music tape, or other sources, allowing you to make announcements which are clear and
more attractive.
The level of the music source is automatically returned to normal when the announcements is finished.
The muting level is adjustable within a range from —3 to —40dB with MUTING LEVEL control located
on the back panel.
The precedence control circuit can also be activated by an external dry contact. The AUTOMATIC and
MANUAL control mode switch is also located on the back panel.
MANUAL MUTING
3
AUTO-
MUTING LEVEL
MANU
□
MIN ; MAX
BX-300
AUTO
“1 r
Q
MUTING LEVEL
MANU .
MIN I MAX
MANUAL MUTING
BX-600, -1200
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