Teledyne Linea GigE 2K, Руководство пользователя

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Linea GigE Series Camera Operational Reference
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Using Cycling Presets—an Example
As presented in this category’s overview, the cycling preset features allows setting up camera
configurations that can change dynamically and repeatedly, with a minimum overhead. The
features that change along with the trigger for the feature change are preprogrammed in the
camera. Additionally a set of preset features can be updated while the camera is acquiring with a
different preset. Such dynamic feature changes allow applications to perform tracking algorithms.
The following example describes a simple cycling sequence of gain change steps which will repeat
until stopped by the user. This example uses the Sapera tool CamExpert to set features and test
the sequence. This does not represent a real world application but serves to describe the cycling
features of Linea GigE.
Initial Example Setup
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For this example, first configure a free running acquisition of 1kHz line rate with an exposure
time and gain that’s somewhat short (dark). These controls are in the Sensor Control Category
group within CamExpert.
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Now select the Cycling Preset Category to setup and test the following example.
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Set cyclingPresetMode to Active. This feature enables the Cycling Preset Module.
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Set cyclingPresetCount to the number of presets which will be configured and used. For this
example set this to 3.
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Set the feature cyclingPresetIncrementalSource to the event which will be used to increment
the cycling presets index. For this example, set this feature to EndOfFrame which is a logical
choice for a simple free-running acquisition setup.
Cycling Example: Changing Gain
The following steps program three presets to create a cycling sequence, starting with
preset index 1.
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Set cP_PresetConfigurationSelector to index 1.
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Set cP_FeaturesActivationSelector to Gain.
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Set cP_FeaturesActivationMode to Active. This defines the camera exposure as one variable
stored in this preset index 1.
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The feature cP_Gain now is in dark text (active) and shows the last Gain used by the camera if
cycling was not enabled. This field now controls the camera gain. The Gain field in the Sensor
Control Category is in gray text indicating a read only field.