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. Maximum signal levels are defi ned in the specifi cations and
operating information and shown on the instrument panels, test fi xture
panels, and switching cards.
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 interlo
ck.
If a screw is present, connect it to protective earth (safety ground)
using the wire recommended in the user documentation.
The symbol on an instrument means risk of hazard. The user
must refer to the operating instructions located in the user
documentation in all cases where the symbol is marked on
the instrument.
The symbol on an instrument means warning, risk of electric
shock. Use standard safety precautions to avoid personal contact
with these voltages.
The symbol on an instrument shows that the surface may be hot.
Avoid personal contact to prevent burns.
The symbol indicates a connection terminal to the equipment
frame.
If this 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.
