Technical Information
User manual CCFD 2320
79
Display Function
A Display Function describes how a display device
converts the voltages at the inputs into light.
In the context of a medical viewing station, a display
device is the combination of imaging board (display
controller) 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
An imaging board or graphics board converts the digital
data from the computer into digital or analog video
voltages.
Most of the common imaging boards 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
imaging board. It is like two complete imaging boards
implemented on one single unit.
A dual head board in the computer behaves exactly as if
two separate boards were installed.
Presets and Internal memory system
The memory of the display contains maximum 200 fixed
and 28 programmable Presets.
When you connect a video signal, the display checks in
the memory for a matching Preset.
If it finds one, it selects the corresponding settings and
parameters from the memory. If it does not find a
