Configuration
5.5 GPIO Setup and Connection
Danley DSA 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
