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Instrumentation and accessories shall not be con-
nected to humans.
Before performing any maintenance, disconnect the
line cord and all test cables.
To maintain protection from electric shock and fire,
replacement components in mains circuits, including
the power transformer, test leads, and input jacks, must
be purchased from Keithley Instruments. Standard
fuses, with applicable national safety approvals, may
be used if the rating and type are the same. Other
components that are not safety related may be pur-
chased from other suppliers as long as they are equiva-
lent to the original component. (Note that selected parts
should be purchased only through Keithley Instruments
to maintain accuracy and functionality of the product.)
If you are unsure about the applicability of a replace-
ment component, call a Keithley Instruments office for
information.
To clean an instrument, use a damp cloth or mild, water
based cleaner. Clean the exterior of the instrument
only. Do not apply cleaner directly to the instrument or
allow liquids to enter or spill on the instrument. Prod-
ucts that consist of a circuit board with no case or chas-
sis (e.g., data acquisition board for installation into a
computer) should never require cleaning if handled
according to instructions. If the board becomes con-
taminated and operation is affected, the board should
be returned to the factory for proper cleaning/servicing.
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