Central Section Of Control Console Keyboard - GE SENOGRAPHE 800T Operator's Manual

GE Medical Systems
REV 6
3–2

Central Section of Control Console Keyboard

CAUTION
See Illustration 1–6.
The central section of the Control Console Keyboard is used to select and display the kV and
mAs values.
1. kV and mAs Readout
– In AOP mode the readout displays the kV values selected by the system and the mAs
values output.
At start of compression, the kV readout displays the code of the mode selected:
CNT, STD, and DOSE. The mAs readout displays the AUTO mode.
At end of exposure, the kV readout displays the kV values selected. The kV readout
displays the first letter of the code of the selected mode (C, S, or D) and the mAs
readout displays the mAs values output.
– In AEC mode, the readout displays the kV values selected by the operator and the
mAs values output preceded by the letter A.
– In manual mode the readout displays the kV and mAs values selected by the
operator.
2. kV selection: The kV values are displayed 22 through 35 in steps of 1 kV via the knurled
knob (14 positions). At end-of-travel (there is no mechanical stop), the readout displays
the maximum or minimum kV values (22 kV or 35 kV). In AOP mode, rotating the knob
has no effect.
3. mAs selection: The mAs values are displayed 4 through 600 mAs via the knurled knob.
At end-of-travel (there is no mechanical stop), the readout displays the minimum or
maximum mAs values (4 or 600 mAs). In AOP and AEC mode, turning the knob has no
effect.
4. AOP, AEC, and Manual Mode selection
The key selects the AOP, AEC and Manual modes successively.
The AOP mode is broken down into three positions, allowing three priorities:
– CNT: contrast priority,
– STD: standard dose/contrast compromise,
– DOSE: dose reduction priority.
Pressing the key selects the Contrast, Standard, and Dose priorities. At the start of
compression, the three priorities are displayed on the kV readout. When the exposure is
complete, the initial letter of the code selected is displayed on the kV readout.
The filter is selected automatically (pressing the key for each has no effect). The
following can be selected via their keys: screen-film combination, film density control.
BREAST COMPRESSION IS ESSENTIAL IN AOP.
The AEC mode is used to select the kV values manually, and mAs values automatically.
The following selections are available via their keys: filter, focal spot, and film density
control.
The Manual mode is used to select kV and mAs values.
The Film Density Control key and the Screen-Film Combination key have no effect in
manual mode.
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SENOGRAPHE 800T
om 2135575–100