AW00097209000 Configuring the Camera
Basler IP Fixed Box Cameras 59
sensor information in the specification tables in Section 8 on page 103. For general information
about shutters, see Section 3.9.1.1.
Flash Window = This option is only available for cameras with rolling shutters. You can
manually adjust the Strobe Delay and Strobe Duration parameters (see below) in order to
control the length of the strobe pulse. For more information, see "Using the Flash Window
(Rolling Shutter)" on page 61.
Exposure Active = This option is available for rolling shutter and global shutter cameras.
When used with a global shutter camera, you can manually adjust the Strobe Delay and Strobe
Duration parameters (see below) in order to control the length of the strobe pulse.
When used with a rolling shutter camera, strobe delay and strobe duration are fixed and can’t
be changed. For more information, see "Using Exposure Active (Rolling Shutter)" on page 63.
Strobe Delay [µs] - If the Direction parameter (see above) for the port is set to "Output" and the
Function parameter is set to "Strobe", the Strobe Delay [µs] parameter sets a delay time (in
microseconds) between when image capture starts and when the strobe pulse becomes active.
Note that if multiple ports are set as outputs with their functions set to strobe, the Strobe Delay [µs]
parameter setting will apply to all of these ports.
Strobe Duration [µs] - If the Direction parameter (see above) for the port is set to "Output" and
the Function parameter is set to "Strobe", the Strobe Duration [µs] parameter sets the length of time
(in microseconds) that the strobe pulse will remain active.
Note that if multiple ports are set as outputs with their functions set to strobe, the Strobe
Duration [µs] parameter setting will apply to all of these ports.
3.9.1.1 Differences Between Global and Rolling Shutters
All Basler IP cameras are equipped with imaging sensors that have an electronic shutter. Two types
of electronic shutters are used: global and rolling. The following sections describe the differences
between them.
Global Shutter
On cameras equipped with a global shutter, exposure begins at the same time for all pixel lines in
the sensor.
A main characteristic of a global shutter is that for each frame acquisition, all of the pixels in the
sensor start exposing at the same time and all stop exposing at the same time. This means that
image brightness tends to be relatively uniform over the entire area of each acquired image, and it
helps to minimize problems with acquiring images of objects in motion.
The cameras provide an exposure active output signal that will go active when the exposure time
for a frame acquisition begins and will go inactive when the exposure time ends.
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