GE SENOGRAPHE 800T, Руководство оператора

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MAINTENANCE
GE Medical Systems SENOGRAPHE 800T
REV 6 om 2135575–100
3–20
4–5 Minimum Optical Density Selection
A target Optical Density has been programmed, based on your recommendations, by the GE
field service engineer during the installation of your Senographe 800T. The machine will
never allow an exposure if this target optical density cannot be reached, except if a maximum
allowable drop in optical density has been programmed. If this is the case, then, in case the
target optical density cannot be reached, the machine will allow the optical density to drop by
the programmed value.
Example: If the target optical density has been set at 1.6, and a maximum allowable drop of 0.2
has been programmed, then the Senographe 800T will allow the optical density to drop down
to 1.6 – 0.2 = 1.4 if the target optical density cannot be reached.
In order to guarantee best results, the programming of this maximum allowable drop must
done by the GE field service engineer. If you do not wish to allow any drop in optical density,
then a value of zero must be programmed for the maximum allowable drop.
4–5–1 Access to Programming Mode
To access the programming mode, press .
The APPLICATION Menu, focal spot, focal track, filter, etc., disappears.
4–5–2 Selecting a Function
To select a function, press the key located under the symbol for that function.