AO SERIES | INSTRUCTIONS MANUAL
13
2.3.6 Analog control
AOL0223X includes two general purpose inputs which can be configured either as
analog or digital. These are NOT optoisolated ports. The electrical scheme of these GPI
is shown in Figure 6:
Figure 6: Electrical scheme of the two general purpose input ports.
The input voltage divider is dimensioned to work with a 0-24V dynamic range for the
input signal.
The two Schottky diodes and the additional 100 Ohm resistor are necessary to avoid
possible transient overvoltages (over 3.3V) or undervoltages (below 0V). However, since
no optoisolation is present, please be careful to connect well-controlled signals.
Example
Figure 7: application example.
GND
INPUT 1
GND
20kohm
100
3.16kohm
D2
D1
3.3V
GND
INPUT 2
GND
20kohm
100
3.16kohm
D2
D1
3.3V
Electrical Specifications for A/D input ports
Min
Max
Unit
Input Voltage
0
24
V
Input Dynamic Range
(Discretization Levels)
100
(Voltage discretization)
240
mV
GND
INPUT 1
GND
20kohm
100
3.16kohm
D2
D1
3.3V
Analog signal
(0 ≤ V
IN
≤ 24V)
AOL0223X
Electronics
DIG_OUT
SYNC_OUT
AOL0223X
Output Signal
(0 ≤ V
LENS
≤ 300V)
CAMERA
