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10.4 Exposure Time Parameters
Many of the camera's image acquisition modes require you to specify an exposure time. There are
two ways to set exposure time: by setting "raw" values or by setting an "absolute value". The two
methods are described below. You can use whichever method you prefer to set the exposure time.
The exposure time must not be set below a minimum specified value. The minimum exposure time
for each camera model is shown in Table 5.
Camera Model
piA640-210gm/gc
piA1000-48gm/gc
piA1600-35gm/gc
piA1900-32gm/gc
piA2400-12gm/gc
Table 5: Minimum Allowed Exposure Time
10.4.1 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)
By default, the Exposure Time Base is fixed at 20 µs. Typically, the exposure time is adjusted by
setting only the Exposure Time Raw parameter.
The Exposure Time Raw parameter value can range from 1 to 4095. So if the value is set to 100,
for example, the exposure time will be 100 x 20 µs or 2000 µs.
Basler pioneer
Minimum Allowed Exposure Time
80 µs
80 µs
80 µs
100 µs
80 µs
Image Acquisition Control
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