ID2000 Series Industrial Code Reader User Manual
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9.3.2 Set Polling
The polling function allows the device to acquire images based on the parameters you set,
including exposure time, gain, Gamma, light source, focus position, etc. Currently, two types
of polling modes are available, including single mode and multiple mode.
Note
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Stopping the real-time acquisition is required before setting the polling function.
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After the polling enabled, the device acquires images with its max. frame rate. Once the
polling disabled, the frame rate you set in Acquisition Frame Rate takes effect.
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The polling function and specific parameters may differ by device models.
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It is recommended to use the polling function under the normal operation mode, and
test/raw modes are used for debugging only.
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The specific parameters of polling may differ by device models.
Single Mode
Steps
1. Right click the device in Device Connection, and click Feature Tree.
2. Go to Image Setting → Polling Mode, and select Single as Polling Enable.
3. Select one parameter (e.g. Param1) from Polling Param.
Note
Up to 8 sets of parameter can be selected from Polling Param.
4. Set parameters participating the polling like Polling Exposure Time, Polling Gain, Polling
Gamma, etc. according to actual demands.
Table 9-4 Parameters of Single Mode Polling
It sets the polling Gamma value.
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If the value is between 0 and 1, when the image brightness
increases, dark area becomes brighter.
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If the value is between 1 and 4, when the image brightness
decreases, dark area becomes darker.
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