The instrument and accessories must
be
used in accordance with its
specifications and operating instructions
or
the safety
of
the equip-
ment may
be
impaired.
Do not exceed the maximum signal levels
of
the instruments and ac-
cessories, as defined
in
the specifications and operating informa-
tion, 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 ap-
plied 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 re-
fer
to
the operating instructions located
in
the manual.
The
&
symbol on an instrument shows that
it
can source or mea-
sure 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 infor-
mation very carefully before performing the indicated 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 circuits, including the power transformer, test
leads, and input jacks, must be purchased from Keithley Instru-
ments.
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 purchased from other suppliers
as
long as they are equivalent to the original component. (Note that se-
lected 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 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
in-
structions.
If
the board becomes contaminated and operation is af-
fected, the board should be returned to the factory for proper
cleaning/servicing.
2/01
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