Gpio Electrical Characteristics - FLIR GRASSHOPPER 3 Series Technical Reference

6.8

GPIO Electrical Characteristics

Both the opto-isolated input and output have over current protection.
The output is open collector and thus requires a pull-up resistor to operate. The rise time and bias current will be
determined by the resistor value chosen. If the camera is generating an output signal that approaches the rise time
plus the fall time of the opto-isolated circuit, care must be taken to optimize the pull-up resistor chosen to minimize
the rise time while still remaining within the current limits of the output circuit.
The opto-isolated specifications listed below are applicable when power to the camera is provided through the
interface and not through the GPIO.
2/10/2017
©2013-2017
FLIR Integrated Imaging
Solutions Inc. All rights reserved.
Warning! To avoid damage, connect the OPTO_GND pin first
before applying voltage to the GPIO line.
Warning! Prolonged use of the camera outside of the Operating
Range described below may lead to unexpected behavior and
should be avoided.
Table 6.2: Operating Range
Description
Non-opto-isolated Voltage
Opto-isolated Input Voltage
Opto-isolated Output Voltage
Non-opto-isolated Sinking Current
Opto-isolated Output Current
3.3 V Output Current
Table 6.3: Absolute Maximum Ratings
Description
Non-opto-isolated Voltage
Opto-isolated Input Voltage
Opto-isolated Output Voltage
Grasshopper
Minimum
0 V
0 V
0 V
Minimum
-24 V
-70 V
-24 V
®
3 PGE Technical Reference
6 Input/Output Control
Maximum
24 V
30 V
24 V
25 mA
25 mA
200 mA
Maximum
42 V
40 V
24 V
39