Automatic Exposure Control (Aec) - AGFA DX-D 300 User Manual

90 | DX-D 300 | Operating the DX-D Software Console

Automatic Exposure Control (AEC)

Automatic Exposure Control (AEC) produces consistent density with excellent
contrast regardless of the radiographic technique selected. The AEC module
comprises the controls for the selection of the exposure detector fields (ion
chamber), sensitivity and density compensation.
To activate AEC mode, touch any of the three AEC field buttons.
To deactivate AEC mode, touch all the selected AEC field buttons until none of
them is selected.
If the message "Wrong AEC Selection" is shown on the software console
before the exposure, it means that the selected kVp value, AEC density and/or
sensitivity set a technique that is out of the operative range with AEC and the
next exposure will be inhibited. Change any parameter (kVp value, AEC
density or sensitivity) in order to obtain a technique enabled for AEC.
Topics:
• Field Selection
• Sensitivity
• Density
• Patient Size
• AEC Backup Time
• Rapid Termination
Field Selection
Each button indicates its related physical location of the selected field in the
AEC exposure detector, and you may select or deselect it by touching it.
Any combination of fields can be selected and the color of the buttons changes
(highlighted) when active.
Figure 26: Field selection
Sensitivity
Each of these buttons allows adjustment of the AEC cut-off dose (low dose,
middle dose and high dose: depending on configuration at installation time).
Each time a button is selected (highlighted), the others are automatically
deselected.
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