THORLABS DCU223 SERIES User Manual

© 2013 Thorlabs GmbH492
DCx Cameras
5.5.2.2 GPIO Interface
GPIO specifications
The two GPIOs (General Purpose I/O) can be used as inputs or outputs. This selection is made by software using
the corresponding SDK API functions. Please observe the following criteria:
Input: 3.3 V LVCMOS, max. input voltage 4.0 V
Output: 3.3 V LVCMOS, max. 10 mA
Attention
The General Purpose IO are not potential-free and have no protective circuit. Faulty wiring (overvoltage,
undervoltage or inverting the wiring when used as serial interface) can result in a damage in the electronics.
During operation as serial interface only LVCMOS levels are allowed to the connector pins. To get a serial RS-232
compliant interface, an external level shifter (LVCMOS/RS-232) is required.
Applying RS-323 levels directly to the pins as well as mixing up the signals RxD and TxD can destroy the camera
electronics!
GPIO wiring as input
The following figures illustrate GPIO wiring examples.
GPIO input
Min.
Max.
Signal level "Low"
0
0.8
V
Signal level "High"
2.0
4.0
V
GPIO wiring as output
GPIO output
Min.
Max.
Signal level "Low"
0
0.8
V
Signal level "High"
2.4
3.3
V
Output current
0
8.0
mA

THORLABS DCU223 SERIES Specifications

General

Brand	THORLABS
Model	DCU223 SERIES
Category	Security Camera
Language	English