Bosch Appliances Music Mixer PLE-1MA030-EU 用户手册
Bosch Security Systems | 2007-11 | PLE-1MA030-EU, PLE-1MA060-EU, PLE-1MA120-EU en
Plena Mixer Amplifier | Installation and User Instructions | Connections and settings
en | 23
table 4.2: Rotary controls
Rotary control
Effect
Typical example
Ducking level control
Sets the required ducking level when VOX and/or
push to talk is active (see table 4.1). When the
ducking level is set to mute, the music volume will be
fully attenuated; when the ducking level is set to mix,
both music and speech inputs can be heard - music
and speech will be mixed. When ducking the music
input is ducked (attenuated), the microphone/line
inputs are always muted when a call is made.
Set the ducking level control to
mute if you want the
announcement to be heard without
background music.
Telephone
emergency/100V
volume control
Attenuates the emergency announcement or signal.
Control range from -25 dB to 0 dB. For safety
reasons, the volume of the emergency
announcement or signal cannot be fully set to zero.
Set the volume of the emergency
announcement to a higher level
when the system is being used in
large open areas.
Note
When PTT or VOX are selected, the ducking
When PTT or VOX are selected, the ducking
control controls between 3 dB attenuation (very
little ducking) to –∞ dB (muted).
When ducking, the music is also present on the
Call only output. If you do not want this, set the
ducking control to mute.