
1 System Overview Major Components
26 System Reference, January 2001
Cooling The testhead is water cooled. It receives its supply of
cooling water from the support rack which in turn is
connected by two flexible hoses to the cooling unit (refer
to “The Cooling System” on page 28).
The Manipulator
The general-purpose manipulator supports and positions
the testhead. It provides 6 degrees of freedom for the
precise and repeatable connection between the testhead
and handlers or wafer probers.
Figure 8 Manipulator
With the manipulator, the testhead can be moved horizon-
tally and vertically, twisted and swung out sideways.
The vertical movement is usually controlled with a hand-
held remote control unit which controls a motor inside the
manipulator, but can also be operated manually by using
the manipulator crank.
For detailed information on testhead movement, refer to
the Docking Hardware Reference.
Manipulator
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