Yamaha PC412-D Owner's Manual page 11

2. Panel descriptions
⑬ NETWORK port
This is an RJ-45 port for connection to a computer via an Ethernet cable (CAT5e or better is recommended). This
is used mainly to monitor and control multiple connected devices from the dedicated "ProVisionaire Amp Editor"
application program.
NOTE
• To prevent electromagnetic interference, use STP (Shielded Twisted Pair) cables.
⑭ GPI connectors
These are 3.5mm Euroblock connectors for GPI (General Purpose Interface) use to input and output control
signals. This product has six input ports and four output ports. The [IN]-1–6 pins detect voltages for a "L" signal
(0V) or a "H" signal (5V). The [OUT]-1–4 pins output a "L" signal (0V) or a "H" signal (5V).
To make connections, use the included Euroblock plug.
For details on connection methods and examples of use, refer to
connectors."
⑮ [INPUT] A1/A2/A3/A4 connectors
These are analog input connectors. There are two types of connector.
● PC-D series
These are XLR-3-31 type balanced jacks that input an analog signal to each channel.
● PC-DI series
These are Euroblock 3-pin jacks that input an analog signal to each channel.
8 | PC412-D PC412-DI PC406-D PC406-DI Owner's Manual
"Connections using the [GPI IN / OUT]