Gpi Connector - Yamaha ACD1 Reference Manual

GPI connector

Connect GPI (General Purpose Interface) devices (e.g., control-
lers) to the rear panel [GPI] connector.
You can use GPI to send or receive control signals to or from an
external device.
The ACD1 provides 4-port input and 4-port output.
• The +V terminals have an output voltage of 5 V. A maximum total of 100 mA of current can be drawn.
• The IN terminals detect voltage changes from 0 V to 5 V.
• The OUT terminals are open-collector outputs. A maximum voltage of +12 V can be applied.
• For each port, a maximum of 75 mA of current can flow.
• Use Amp Editor to make settings such as parameter assignments.
• A Euroblock plug is used for connection to the [GPI] connector.
Euroblock connection methods are described in
• By specifying the input/output channels in Amp Editor, you can recall scenes or edit parameters from a connected exter-
NOTE
nal GPI device, or send signals to an external GPI device. For details on making settings, refer to the "Amp Editor owner's
manual."
● Example : Controlling the ACD1 from a switch
ACD1
+5V
CPU
A/D
100k
● Example : Controlling the ACD1 via a 10k ohm lin-
ear taper potentiometer
ACD1
+5V
CPU A/D
100k
• To adjust (calibrate) the range over which the input voltage to the [GPI] connector is detected, refer to
NOTE
13).
"Euroblock plug connection" (page 18)
+V
IN
+V
Continuously
IN
variable
volume
GND
GND OUT
in this manual.
● Example : Lighting the LED of an external device
from the ACD1
ACD1
+5V
10
CPU
• Do not allow the current flowing from the OUT
connector to exceed 75 mA.
CAUTION
● Example : Switching the relay of an external
device from the ACD1 to light an LED
ACD1
+5V
+V
10 OUT
CPU
Connector wiring
GND IN Voltage
+V
OUT
Max. 75 mA
+
–
Max. 75 mA
"5. Utility" (page
ACD1 Reference Manual
19