Safety
Introduction
The
WARNING
heading in the user documentation explains dangers that might result
in personal injury or death. Always read the associated information very carefully before
performing the indicated procedure.
The
CAUTION
heading in the user documentation explains hazards that could damage the
instrument. Such damage may invalidate the warranty.
Instrumentation and accessories shall not be connected to humans.
Before performing any maintenance, disconnect the line cord and all test cables.
To maintain protection from electric shock and fi re, 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. The detachable mains
power cord provided with the instrument may only be replaced with a similarly rated
power cord. 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 offi ce for information.
Unless otherwise noted in product-specifi c literature, Keithley instruments are
designed to operate indoors only, in the following environment: Altitude at or below
2,000 m (6,562 ft); temperature 0 °C to 50 °C (32 °F to 122 °F) ; and pollution
degree 1 or 2.
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. Products that consist of a circuit board with
no case or chassis (e.g., a data acquisition board for installation into a computer)
should never require cleaning if handled according to instructions. If the board
becomes contaminated and operation is affected, the board should be returned to the
factory for proper cleaning/servicing.
Safety precaution revision as of March 2016.
Do not touch any object that could provide a current path to the common side of the circuit
under test or power line (earth) ground. Always make measurements with dry hands while
standing on a dry, insulated surface capable of withstanding the voltage being measured.
When fuses are used in a product, replace with the same type and rating for continued
protection against fi re hazard.
For safety, instruments and accessories must be used in accordance with the operating
instructions. If the instruments or accessories are used in a manner not specifi ed in the
operating instructions, the protection provided by the equipment may be impaired.
Do not exceed the maximum signal levels of the instruments and accessories. Maximum
signal levels are defi ned in the specifi cations and operating information and shown on the
instrument panels, test fi xture panels, and switching cards.
Chassis connections must only be used as shield connections for measuring circuits, NOT
as protective earth (safety ground) connections.
If you are using a test fi xture, 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 protective earth (safety ground) using the wire
recommended in the user documentation.
The symbol on an instrument means caution, risk of danger. The user must refer to the
operating instructions located in the user documentation in all cases where the symbol
is marked on the instrument.
The symbol on an instrument means caution, risk of electric shock. Use standard
safety precautions to avoid personal contact with these voltages.
The symbol on an instrument shows that the surface may be hot. Avoid personal
contact to prevent burns.
The symbol indicates a connection terminal to the equipment frame.
If this symbol is on a product, it indicates that mercury is present in the display lamp.
Please note that the lamp must be properly disposed of according to federal, state, and local
laws.
Safety
Introduction
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