When installing equipment where access to the main power cord is restricted, such as rack
mounting, a separate main input power disconnect device must be provided, in close prox-
imity to the equipment and within easy reach of the operator.
For maximum safety, do not touch the product, test cables, or any other instruments while pow-
er is applied to the circuit under test. ALWAYS remove power from the entire test system and
discharge any capacitors before: connecting or disconnecting cables or jumpers, installing or
removing switching cards, or making internal changes, such as installing or removing jumpers.
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.
The instrument and accessories must be used in accordance with its specifications and oper-
ating instructions or the safety of the equipment may be impaired.
Do not exceed the maximum signal levels of the instruments and accessories, as defined in
the specifications and operating information, 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 in-
structions 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
WARNING
heading in a manual explains dangers that might result in personal injury
or death. Always read the associated information very carefully before performing the indi-
cated procedure.
The
CAUTION
heading in a manual 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 fire, replacement components in mains cir-
cuits, 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 equivalent to the original component. (Note
that selected parts should be purchased only through Keithley Instruments to maintain accu-
racy 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. 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 according to instructions. If the board becomes contaminated and operation is af-
fected, the board should be returned to the factory for proper cleaning/servicing.
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