Configuration
5.5 GPIO Setup and Connection
PowerZone Connect amplifiers provide a GPIO socket that
enables remote control of volume, standby, mute and trigger
functions. The GPIO connector pin functions are described
in the GPIO Settings menu illustrated in Diagram 5l. The
connection of GPIO based remote volume control and
standby/mute are illustrated in Diagram 5m and Diagram 5n
respectively.
Note: The GPIO connector must not be used for any
unintended purpose. Amplifier damage may result from
incorrect use of GPIO.
Note: Shielded cable must be used when connecting standby
switches and potentiometers via GPIO.
Note: GPIO Pin 8 has a low output impedance and is able to
supply a maximum current of 10mA.
Note: GPIO Pin 1 and Pin 3 both offer ground connections:
Pin 1 is connected directly to the amplifier chassis.
Pin 3 is connected to the chassis via a 220 Ohm resistor.
The ‘soft ground’ connection of Pin 3 is potentially useful for
managing ground loops that may cause audible hum.
Diagram 5l
GPIO Settings Menu
Diagram 5m
Potentiometer connections for remote vol-
ume control via GPIO.
Note: Diagram 6c illustrates
use of the GPIO connector.
Diagram 5n
Connections for remote
standby/mute switch via GPIO.
Note: Diagram 6c illustrates
use of the GPIO connector.
Gr
ound
+3V3
Gr
ound
Standby/Mute
Potentiometer
(>10kΩ)
Connect Wiper to
Pin 4, 5, 6 or 7.
Switch open or closed
toggles Standby or Mute
depending on options
selected in the GPIO
Settings Menu
