JAI TMC-775, User Manual

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Functional Options 37
TMC-775/TMC-773
5 Configurable Options Available
This section describes the additional options the TMC-775/TMC-773 offers. These options are only applicable if
the units have been ordered with theses options.
Figure 33. ALC Controls Set
5.1.1 ALC (Option OP1-5)
This optional feature provides an automatic level control (ALC) function for the camera. The ALC function
combines both automatic gain and exposure control to give the best response to lighting conditions. The function
also allows selectable modes which provide more flexibility in determining the best scene performance. If
configured with this option, it is enabled in gain section of the camera control main window. In automatic mode,
the camera varies its internal gain and shutter speed dynamically to get a consistent exposure based on the
setting of the other ALC parameters. In manual mode, the Manual Gain setting and Shutter Speed control may be
adjusted to get the desired exposure.
• Manual Gain
The Manual Gain allows you to set the system gain. The range is from 5dB to 32dB. The Manual Gain control is
only operative when the ALC Mode is set to Manual.
•
ALC Level
The ALC Level setting determines the desired exposure level when the ALC Mode is set to Automatic. The units
are arbitrary and vary from 0 to 255. A higher Level setting will result in a brighter image.
•
ALC Max Gain
The ALC Max Gain setting specifies the maximum system gain that will be applied when ALC Mode is set to
Automatic.
•
ALC Mode
In Automatic Mode the system will automatically adjust the gain and shutter speed (if selected – see below) to
maintain a consistent exposure level. In Manual Mode the user may adjust the Manual Gain and Shutter Speed
settings to obtain the desired exposure level.
5.1.2 Advanced Settings for ALC
In the “Advanced Settings” page, there are additional features which allow to user to customize the ALC
functionality to suit their specific image scenes. Once this is selected, the “Main” page will use these settings
when adjusting the video level.