Bosch PLE-4MA240-CN, Руководство по эксплуатации, Страница: 14 / 26

14 en | Configuration PLENA Mixer amplifier, 4-zone, 240W
2019-03 | V1.1 | Operation manual Bosch Security Systems B.V.
6 Configuration
6.1 Unit settings
6.1.1 Rear panel settings
The unit can be quickly set-up for operation by setting the following controls at the rear of the
unit:
–
DIP switches
Default settings: mic/line-1: mic, chime: on, phantom power: on, PTT: on.
– Rotary knobs
Default settings: ducking: max (mute), telephone/emergency: max.
See the following tables for an overview of the settings and typical examples of their use.
DIP switch On Off Typical example
Line
(mic/line-1) Input signal from line. Input signal from
microphone.
Depends on set-up.
Chime (mic/line-1) Chime will be
sounded at the
beginning of an
announcement. Chime will not be
sounded at the
beginning of an
announcement. Use a chime to attract
listener's attention
before making an
announcement.
Phantom power
(mic/line-1, mic-2,
mic-3) Provides power to
condenser
microphones. Phantom power
unavailable. Enable phantom
power if you use
electret or condenser
microphones.
PTT “Push to
talk” (mic/line 1) When the Push to talk
contact is closed (for
example, by pressing
the PTT button of
PLE-1CS call station):
• this input is
available for speech.
• a chime will sound,
if selected.
• the music and other
mic inputs will be
reduced in volume to
the level set by the
ducking level control
knob. Mic/line-1 input will
mix with the
background music or
the other
microphones in the
selected zones. Live broadcast with
PTT on will override
all other audio inputs,
except the emergency
input.