User's Manual Part 2

8065751025 2.7
Constellation
®
Vision System
FOOTSWITCH
Functional operations of the Constellation
®
Vision System console are controlled by
the footswitch shown in Figure 2-3. The footswitch consists of a treadle, left and right
horizontal/vertical switches, left and right heel switches, and a tension adjustment
knob. An advisory popup window is displayed if the footswitch is not connected.
Generally, the treadle is used to provide control of a parameter, such as vacuum, with
the treadle's angle of depression proportional to the parameter output. In some modes
of operation, the treadle is used to provide on/off control of a function, with any
depression resulting in a fixed output of its parameter.
The footswitch treadle is used in a mode-dependent fashion during system operation.
In U/S mode for example, when the treadle is depressed its range of travel is divided
into ranges 0, 1, 2 and 3. Each range, except range 1, is separated from the previous
range by a detent. Detent firmness levels are programmable in the Doctor Settings
menu which is discussed later in this section of the manual (see Settings). The
footswitch icon located in the upper left corner of the screen displays the current
treadle position.
Right and left switches are used to enable and disable system functions. The switches
are nudged sideways (horizontal) for some functions, and pressed down (vertical) for
others.
The tension adjustment knob, located on the front of the footswitch, is used to adjust
the pressure needed to depress the treadle.
Left Horizontal/Vertical Switch
Tension Adjustment Knob
(not shown)
Right Horizontal/Vertical Switch
Right Heel Switch
Left Heel Switch
Footpedal
Handle
Handle
Figure 2-3 The Constellation
®
Vision System Footswitch