Configurable Options Available; Alc (Option Op1-5); Figure 34. Alc Controls Set - JAI TM-770 User Manual

5 Configurable Options Available

This section describes the additional options the TM-77X offers. These options are only applicable if the units
have been ordered with theses options.
Figure 34.
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
setting to obtain the desired exposure level.
5.1.1.1
In the "Advanced Settings" page, there are additional features which allow the 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.
TM-77X Series
ALC Controls Set
Advanced Settings for ALC
Functional Options 37