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 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
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
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
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 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 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
affected, the board should be returned to the factory for proper
cleaning/servicing.
