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2.7.2. RS-232 connector
The transmitter contains a 3-pole Phoenix connector which is used for RS-232 serial
connection.
Pin nr.
Signal
1
Ground
2
TX data
3
RX data
RS-232 connector pin assignments
Compatible plug type
Phoenix
®
Combicon series (3.5mm pitch, 3-pole), type: MC 1.5/3-ST-3.5.
2.7.3. Analog audio inputs and outputs
5-pole Phoenix connector is used for balanced analog audio input and output. Unbalanced
audio signals can be connected as well. For unbalanced input c and ground to the
source and connect – to the ground.
Pin nr.
Signal
1
Left+
2
Left-
3
Ground
4
Right-
5
Right+
Analog audio connector and plug pin assignments
Compatible plug type
Phoenix
®
Combicon series (3.5mm pitch, 5-pole), type: MC 1.5/5-ST-3.5.
2.7.4. GPIO - General purpose input/output ports
SW4-OPT-TX240RAK contains a 8-pole Phoenix connector with seven GPIO pins, which
operates at TTL digital signal levels and can be set to high or low level (Push-Pull). The
direction of the pins can be input or output (adjustable). The signal levels are the following:
Voltage [V]
Current, max. [mA]
Low level
0 - 0,8
30
High level
2 - 5
18
INFO
The total available current of the controller is 180mA.
Pin nr.
Signal
1
Configurable
2
3
4
5
6
7
8
Ground
GPIO connector and plug pin assignments
Compatible plug type
Phoenix
®
Combicon series (3.5mm pitch 8-pole), type: MC 1.5/8-ST-3.5.
1
2
3
1
2
3
4
5
1
2
3
4
5
6
7
8
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Installation and controls