Exposure Modes - Basler Racer User Manual

AW00118508000
For more information about setting the camera for hardware triggering and selecting the source to
receive the ExLSTrig signal, see Section 6.1.5 on
For more information about CC1, CC2, CC3, and CC4, see Section 5.5.1 on
6.1.5.2

Exposure Modes

If you are triggering the start of line acquisition with hardware line start trigger (ExLSTrig) signal, the
following exposure modes are available:
Timed exposure mode

Trigger width exposure mode

Timed Exposure Mode
When the timed exposure mode is selected, the exposure time for each line acquisition is
determined by:
the value of the camera's ExposureTimeAbs parameter if you are parameterizing the camera

with Basler pylon.
the value of the Exposure Time Raw register if you are parameterizing the camera via direct

register access.
The minimum and the maximum allowed exposure time for each acquired line are as shown in
Table 10.
raL2048- raL4096-
80km
Min 2.0 µs
Max 10000 µs 10000 µs
Table 11: Minimum and Maximum Allowed Exposure Times
If you are using a GenICam compliant tool such as the Basler pylon Viewer and
you attempt to set the exposure time to exactly the minimum allowed or to exactly
the maximum allowed, you will see unusual error codes. This is an artifact of a
rounding error in the GenICam interface architecture. As a work around, you could
set the exposure time slightly above the minimum or below the maximum. Values
between the minimum and the maximum are not affected by the problem.
If the camera is set for rising edge triggering, the exposure time starts when the ExLSTrig signal
rises. If the camera is set for falling edge triggering, the exposure time starts when the ExLSTrig
signal falls. Fig. 18 illustrates timed exposure with the camera set for rising edge triggering.
Basler racer Camera Link
raL6144-
80km 80km
2.0 µs 2.0 µs
10000 µs
page 64.
raL8192- raL12288-
80km 66km
2.0 µs 2.0 µs
10000 µs 10000 µs
Acquisition Control
page 43.
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