User`s manual
Acquisition Control AW00049313000
94 Basler runner
8.2.5.2 Exposure Time Parameters
If you are operating the camera in either of the following ways, you must specify an exposure time
by setting the camera’s exposure time parameters:
the Line Start Trigger Mode is set to Off
the Line Start Trigger Mode is set to On and the Timed Exposure Time Control Mode is
selected
There are two ways to specify the exposure time: by setting "raw" parameter values or by setting
an "absolute" parameter value. The two methods are described below. You can use whichever
method you prefer to set the exposure time.
Setting the Exposure Time Using "Raw" Settings
When exposure time is set using "raw" values, the exposure time will be determined by a
combination of two elements. The first element is the value of the Exposure Time Raw parameter,
and the second element is the Exposure Time Base. The exposure time is determined by the
product of these two elements:
Exposure Time = (Exposure Time Raw Parameter Value) x (Exposure Time Base Abs Parameter Value)
The Exposure Time Raw parameter value can be set in a range from 1 to 4095.
By default, the Exposure Time Base Abs parameter is set to a value of 1.0 µs on all camera models.
The Exposure Time Base Abs parameter can be changed in increments of 0.1 µs.
Note
The product of the Exposure Time Raw parameter setting and the Exposure
Time Base Abs parameter setting (i.e., the exposure time) must be equal to or
greater than the minimum exposure specified in the table on the previous page.
It is possible to use the parameters to set the exposure time lower than what is
shown in the table, but this is not allowed and the camera will not operate
properly when set this way.
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.