Dali PHANTOM CI AMP-2500 DSP, Руководство по установке и Руководство пользователя, Страница: 28 / 29

8.9 GPIO Setup and Connection
The AMP-2500 DSP amplifier provides 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 8L . The connection of GPIO based remote
volume control and standby/mute are illustrated in
Diagram 8M and Diagram 8N respectively.
NOTES
The GPIO connector must not be used for any
unintended purpose. Amplifier damage may
result from incorrect use of GPIO.
Shielded cable must be used when connecting
standby switches and potentiometers via GPIO.
GPIO Pin 8 has a low output impedance and is
able to supply a maximum current of 10mA.
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 8L
AMP CONFIGURATOR [GPIO] Settings Menu
Diagram 8M
Potentiometer connections for remote volume control via GPIO.
Diagram 8N
Connections for remote standby/mute switch via GPIO.
+3V3
Potentiometer
(>10kΩ)
Connect Wiper to Pin 4, 5, 6
or 7.
Gr
ound
Gr
ound
Standb
y/Mut
e
Switch open or closed toggles
Standby or Mute depending on
options selected in the GPIO
Settings Menu
NOTE
Diagram 6F illustrates use of the GPIO connector.
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