Extron electronics IPCP Pro Series - Page 39

IPCP Pro Series • Hardware Features and Installation 31
• Example application, analog input with pull-up: adjusting audio levels using a
10k potentiometer
In this example, the flex I/O port is configured for analog input, and it supplies
a pull-up voltage to the potentiometer. The position of the 10k potentiometer
determines the voltage that this port provides, ranging from 0VDC to 4.15VDC.
+5.0 V
1k ohms
SW 2
SW 1
Flex
I/O
GND
10k
Potentiometer
Voltage
Protection
A/D
Converter
CTL
Figure 28. Flex I/O Analog Input Application:
Audio Level Adjustment Using a 10k Potentiometer