Bosch Appliances Car Amplifier PLE-2MA240-US User Manual

Bosch Security Systems | 2007-10 | PLE-2MA120-US,  PLE-2MA240-US en

Plena Mixer Amplifier | Installation and User Instructions | Connections and settings

 en | 16

The priority microphone (or a generic call station) that 
can be used with push to talk (PTT) should be 
connected to “microphone/line 1 input with trigger”. 
The PTT mode can be activated by setting the DIP 
switch (3) at the rear of the unit. 

Microphone/line 1 input with trigger has priority over 
all other microphone/line inputs. If, however, the “Tel. 
emergency/70V input” receives a signal, all inputs 
including microphone/line 1 input with trigger will be 
overruled.

The microphone/line 1 input with trigger has a Euro 
style pluggable screw terminal connector. This Euro 
style pluggable screw terminal connector has a trigger 
input which can be used in combination with the Euro 
connector.

The priority microphone can be connected to the 
microphone/line 1 input with trigger as follows:
•

Euro connector with trigger. See figure 4.2.

•

Euro connector only (without trigger).

Set the DIP switch settings for microphone/line 1 with 
trigger, as required. See section 4.3.

Note
When connecting an unbalanced line level 

(200 mV) signal to the microphone/line input, 

connect it as follows: Signal to +, connect to - 

and GND to ground.