Digital Input/Output; Digital Input (Trigger); Digital Output (Flash Strobe) - IDS uEye series User Manual

User Manual uEye Cameras V3.32
6.5

Digital Input/Output

Depending on the model, uEye cameras have one or more digital inputs and outputs designed for
different purposes.
Camera model
USB uEye SE
USB uEye RE
USB uEye LE housing
version
USB uEye LE board
level version
GigE uEye SE
GigE uEye HE
6.5.1

Digital Input (Trigger)

In trigger mode, image capture by the uEye cameras can be controlled through external events. For
this purpose, a digital signal must be applied to the camera input.
You can determine whether the camera will respond to the rising or falling edge of the digital signal.
After an internal delay, the sensor is exposed for the defined exposure time. The captured image is
then transferred to the PC.
In case of a triggered image capture, the camera is only ready to process the next trigger signal after
completion of the data transfer to the PC. Trigger events that occur during image exposure or data
transfer are ignored. An internal counter records the number of ignored trigger events and can be
read out from the PC.
You can query the status of the digital input using the software. This enables you to use the input for
other purposes as well.
6.5.2

Digital Output (Flash Strobe)

The digital output can be set statically by software or depending on the exposure time.
In uEye models equipped with an opto-coupler output, it is possible to control a DC voltage which is
applied to the output. This allows controlling a flash, either directly or via a separate flash controller
unit depending on the sensor exposure. In exposure-dependent mode, you can set the delay and
the duration of the flash. By selecting suitable delay and duration settings, you can minimize the
rolling shutter effect (see also Shutter Methods).
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Digital inputs
1 (opto coupler)
1 (opto coupler)
1 (TTL)
1 (opto coupler)
1 (opto coupler)
The delay is due to internal camera switching times and depends on the sensor type and
the parameters that have been set. It is always below 100 µs. You can find the exact values
for each camera in the Specifications: Sensors chapter.
You can optionally set an additional delay (trigger delay).
Digital outputs
1 (opto coupler)
1 (opto coupler)
-
1 (TTL)
1 (opto coupler)
1 (opto coupler)
© 2009 IDS Imaging Development Systems GmbH
General purpose I/Os
(GPIOs), Other
-
2 (TTL)
2 (TTL)
1 RS-232
-
-
-
-