7.1.3   Tab Parameters

This tab card is available if the image source is set to an image acquisition interface and a connection to an image acquisition device has already been established. Press F1 for more information about the displayed parameters.

Interface Library  

The image acquisition interface library (DLL or shared object) used by the current connection is displayed in this field.

Update Image  

If this check box is ticked, a new image is acquired immediately after each parameter change. Disable the check box if you want to change multiple parameters at once.

Refresh  

Refreshes the list of supported parameters and their value ranges. This is useful for parameters with side affects.

Reset All  

Resets all parameters to their default values. Individual parameters can be reset by clicking the corresponding button displayed to the right of each parameter.

Parameter Grouping

The available parameters are grouped by user parameters, read-only parameters, action parameters and write-only parameters. The latter cannot be changed in the assistant and are listed only for reference. The parameters of some of the interfaces are additionally grouped by category and visibility. If grouping information is available, the amount of displayed parameters can be reduced by choosing a subject matter from the down-down list Category. You can further filter the parameters by selecting a skill level from the down-down list Visibility (beginner, expert, or guru).

By default the parameters are sorted thematically. You can also sort the parameters by name (check box Sort by Name).

Setting Parameters

The parameters are displayed in a tabular format. The first column shows the parameter name. The second column depends on the parameter type:

• If the parameter is editable, its value can be entered into a text field. This field may contain value suggestions as a drop-down list. Numeric values can be incremented/decremented using the arrows next to the text field.

• If the parameter is read-only, its value is displayed, but cannot be modified.

• For action parameters, the corresponding action can be triggered by clicking the Apply button.

The third column is reserved for numeric parameters. It contains a slider to quickly alter the parameter value within the defined range. Please note that low level error messages are suppressed while dragging the slider. If no range is defined, no slider is displayed.

The fourth column contains a reset button for editable parameters. Click it to reset altered parameters to their default value.