User manual

Glossary
88
Glossary
Calibration
Each display is calibrated in the factory before it is sent to the customer.
After this calibration, black and white luminance are set to the ideal
level.
A stabilization routine, constantly active when the display is on, keeps
these levels constant using the built-in sensor.
Display Function
A Display Function describes how a display device converts the video
signals at the inputs into light.
In the context of a medical viewing station, a display device is the
combination of display controller (graphics board) and display.
The display function is a graph that shows how the light from the
display panel evolves from minimum to maximum luminance while the
data levels at the input of the display controller go from 0 to maximum.
Display Controller head
A display controller (graphics board) converts the digital data from the
computer into digital or analog video voltages.
Most of the common display controllers contain just one set of video
and sync outputs. However, some high-end boards, like some of the
BarcoMed boards, contain two sets of video and sync outputs. This is
called a dual head display controller. It is like two complete display
controllers implemented on one single unit.
A dual head board in the computer behaves exactly as if two separate
boards were installed.