Keysight N2790A User Manual page 11

WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
Keysight N2790A Differential Voltage Probe User Guide
If you energize this instrument by an auto transformer (for voltage
reduction or mains isolation), the common terminal must be connected
to the earth terminal of the power source.
Whenever it is likely that the ground protection is impaired, you must
make the instrument inoperative and secure it against any unintended
operation.
Service instructions are for trained service personnel. To avoid
dangerous electric shock, do not perform any service unless qualified to
do so. Do not attempt internal service or adjustment unless another
person, capable of rendering first aid and resuscitation, is present.
Do not install substitute parts or perform any unauthorized modification
to the instrument.
Capacitors inside the instrument may retain a charge even if the
instrument is disconnected from its source of supply.
Do not operate the instrument in the presence of flammable gases or
fumes. Operation of any electrical instrument in such an environment
constitutes a definite safety hazard.
Do not use the instrument in a manner not specified by the manufacturer,
the protection provided by the PROBE ASSEMBLY may be impaired.
Safety Information
11