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Do not connect switching cards directly to unlimited power circuits. They are intended to be
used with impedance-limited sources. NEVER connect switching cards directly to AC
mains. When connecting sources to switching cards, install protective devices to limit fault
current and voltage to the card.
Before operating an instrument, ensure that the line cord is connected to a
properly-grounded power receptacle. Inspect the connecting cables, test leads, and jumpers
for possible wear, cracks, or breaks before each use.
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
proximity 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.
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 specified 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, 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 the same type and rating for continued
protection against fire hazard.
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 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 protective earth (safety ground) using the wire
recommended in the user documentation.
This symbol on an instrument means caution, risk of danger. The user should
refer to the operating instructions located in the user documentation in all cases
w here the symbol is marked on the instrument.
This symbol on an instrument means caution, risk of electric shock. Use
standard safety precautions to avoid personal contact with these voltages.
This symbol on an instrument shows that the surface may be hot. Avoid
personal contact to prevent burns.
This symbol indicates a connection terminal to the equipment frame.
If the mercury 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.
WARNING
This 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.
CAUTION
This 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.