bles or jumpers, installing or removing switching cards, or making internal changes, such as installing or removing jumpers.
Do not touch any object that could p
rovide a current path to the common side of the circuit under test or power line (earth) ground. Al-
ways make measurements with dry hands while standing on a dry, insu
lated surface capable of withstanding the voltage being measured.
The instrument and accessories must be used in accordance with it
s specifications and operating instructions or the safety of the
equipment may be impaired.
Do not exceed the maximum signal levels of t
he instruments and accessories, as defined in the specifications and operating in-
formation, and as shown on the instrument or
test fixture panels, or switching card.
When fuses are used in a product, replace with
same type and rating for continued protection against fire hazard.
Chassis connections must only be
used as shield connections for measuring circuits, NOT as safety earth ground connections.
If you are using a test fixture, keep the
lid closed while power is applied to the device under test. Safe operation requires the use
of a lid interlock.
If a
screw is present, connect it to safety earth ground using the wire recommended in the user documentation.
The
!
symbol on an instrument indicates that the user should refer to the operating instructions located in the manual.
The
symbol on an instrument shows that it can source or measure 1000 volts or more, including the combined effect of
normal and common mode voltages. Use standard safety precautions to avoid personal contact with these voltages.
The
symbol indicates a connection terminal to the equipment frame.
The WARNI
NG heading in a manual explains dangers that might result in personal injury or death. Always read the associated
information very carefully before performing the indicated procedure.
The CAUTION head
ing in a manual explains hazards that could damage the instrument. Such damage may invalidate the war-
ranty.
Instrumentation and accessories shall not be co
nnected 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 ap-
provals, may be used if the rating and type are
the same. Other components that are not safety related may be purchased from
other suppliers as long as they are equivalent 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 replacement component, call a Keithley Instruments office for information.
To clean an instrument, use a damp cloth or mi
ld, 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. Products that consist of a circuit board with
no case or chassis (e.g., data acquisition board for installation into a computer) should never require cleaning if handled accord-
ing to instructions. If the board becomes contaminated and operation is
affected, the board should be returned to the factory for
proper cleaning/servicing.
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