Harman Crown DCi 4 1250DA, Operation Manual

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page 43
DriveCore Install DA Series Operation Manual
Using the GPIO Port
Using the GPIO Port
DCi DA Series amplifiers come with a 2-in/2-out General Purpose In/Out (GPIO) Control port in the form of a 6-position RJ-11 connector. The Control port has multiple
functions and uses, which include preset selection and gain control, among others.
AUX
CLASS 2
WIRING
INPUT
GPIO
ETHERNET
100Mb ACT
DANTE
OUT
+3.3V
IN
PRIMARY SECONDARY
CAUTION - TO REDUCE THE RISK OF ELECTRIC
SHOCK, GROUNDING OF THE CENTER PIN
OF THIS PLUG MUST BE MAINTAINED
4 3 2 1 8 7 6 5
MAC
ADDRESS
SERIAL NUMBER SERIAL NUMBER
BAR CODE
RESET
DATA
PRESET
AUX
CLASS 2
WIRING
INPUT
GPIO
ETHERNET
100Mb ACT
DANTE
OUT
+3.3V
IN
PRIMARY SECONDARY
CAUTION - TO REDUCE THE RISK OF ELECTRIC
SHOCK, GROUNDING OF THE CENTER PIN
OF THIS PLUG MUST BE MAINTAINED
4 3 2 1 8 7 6 5
MAC
ADDRESS
SERIAL NUMBER SERIAL NUMBER
BAR CODE
RESET
DATA
PRESET
Figure 50: The GPIO port
Hardware Specification
Inputs are capable of either binary or analog control of a state variable (SV) within the amplifier. Outputs are binary only and represent an SV of the amplifier. Additionally,
outputs can be controlled independently via the software.
Control port pinout descriptions:
PIN 1: Output 1. 0VDC to +3.3VDC output. Output impedance = 1KΩ pullup to +3.3V.
PIN 2: Output 2. 0VDC to +3.3VDC output. Output impedance = 1KΩ pullup to +3.3V.
PIN 3: Input 1. 0VDC to +3.3VDC input. Logic = TTL thresholds. Analog = full scale 0–3.3V. Input impedance > 20KΩ.
PIN 4: +3.3VDC output. LIMIT = 30mA. Output impedance = 100Ω to +3.3V.
PIN 5: Input 2. 0VDC to +3.3VDC input. Logic = TTL thresholds. Analog = full scale 0–3.3V. Input impedance > 20KΩ.
PIN 6:
GND.
Configuring the Control Port Inputs
To access Control port configuration, double-left-click on the DCi DA Amp icon in the Room window to highlight it. Now, right-click the DCi DA Amp icon, and then
select Configure Control Ports from the menu (see
Figure 53
). The Control Ports tab will open (see
Figure 52
).
Key Control port input configuration points:
• Each of the two Control port inputs support variable
control (using a potentiometer), binary control (using a
switch), or multilevel control (using a rotary switch with
voltage dividers).
• Audio Architect is used to assign up to 40 SV's to each
control input.
Figure 51: Accessing the Control Ports tab