User Manual

About GPI
The GPI connector located on the rear panel can be used as a GPI (General Purpose Interface) input/output
connector. This connector provides eight GPI IN ports and eight GPI OUT ports. For example you can use an
external switch to control internal parameters of the RIVAGE PM series or to switch scenes. Conversely,
operations or scene changes performed on the RIVAGE PM series can send control signals to an external
device. For details on how to send control signals to an external device when you switch scenes, refer to
“Outputting a control signal to an external device in tandem with scene recall (GPI OUT)” on page 327.
The following diagram is an example of an external circuit that can operate GPI via the GPI connector. (For
details on the specifications of the GPI connector pins, refer to the data list.) [OUT]-1–7 ports are open-drain
outputs, and are switched to open or ground. Applicable voltage is up to +12V for the [OUT]-1–7 ports, and
acceptable current is up to 75 mA per port. [OUT]-8 port supports up to +30V voltage input.
NOTE
(
Only [IN]-8 port features photo coupler input of up to +24V.
(
Only [OUT]-8 port features relay output of 24V (DC) (rated) and 1A.
a
Using a switch connected to GPI IN1
+5V
A/D
CPU
+5V
GPI1
180kΩ
180kΩ
CS/DSP
b
Using a switch connected to GPI IN8
CS/DSP
CPU
OPTO+
OPTO–
2.2kΩ
Optocoupler
5–24V(DC)
942
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