Plena Mixer Amplifier Installation and User Instructions Connections and settings
en 15
4Connections and settings
4.1Connecting inputs
4.1.1Priority microphone (input 1)
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”. The PTT mode can be activated by setting the DIP switch (12) at the rear of the unit. Microphone/line 1 input has priority over all other microphone/line inputs.
If, however, the “Tel. emergency/100V input” receives a signal, all inputs including microphone/line 1 input will be overruled.
The microphone/line 1 input has two connectors wired in parallel:
•an XLR connector (for a 3 pole microphone), and
•a Euro style pluggable screw terminal connector.
The Euro style pluggable screw terminal connector has a trigger input, which can be used in combination with the Euro and XLR connector.
The priority microphone can be connected to the microphone/line 1 input as follows:
•XLR connector only. See figure 4.1.
•XLR connector with trigger. See figure 4.2.
•Euro connector with trigger. See figure 4.3.
•Euro connector only (without trigger).
Note
If a microphone is connected to both the XLR connector and the Euro connector for the microphone/line 1 input, the input signals will be added together.
Set the DIP switch settings next to the XLR connector for microphone/line 1, 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 pin 2, pin 1 and pin 3 to ground.
figure 4.1: XLR connector only
figure 4.2: XLR connector with trigger
figure 4.3: Euro connector with trigger
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