Safety
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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 power 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 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, as defi ned
in the specifi cations and operating information, and as shown on the instrument or test
fi xture panels, or switching card.
When fuses are used in a product, replace with the same type and rating for continued
protection against fi re 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 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.
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 where 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.
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