Safety Information
N2804/5A Differential Probes User’s Guide
19
Concerning the Oscilloscope or Voltage Measuring Instrument to Which
the Probe is Connected
WARNING
Whenever it is likely that the ground protection is impaired, you must make the
instrument inoperative and secure it against any unintended operation.
WARNING
If you energize the instrument by an auto transformer (for voltage reduction or mains
isolation), the ground pin of the input connector terminal must be connected to the
earth terminal of the power source.
WARNING
Before turning on the instrument, you must connect the protective earth terminal of the
instrument to the protective conductor of the (mains) power cord. The mains plug shall
only be inserted in a socket outlet provided with a protective earth contact. You must
not negate the protective action by using an extension cord (power cable) without a
protective conductor (grounding). Grounding one conductor of a two-conductor outlet
is not sufficient protection.
WARNING
Periodically inspect the probe wires to check for any cracks, damage, or defective
leads. Do Not Operate With Visible or Suspected Damage. If you suspect there is
damage, have it inspected by a Keysight authorized service personnel.
WARNING
Capacitors inside the instrument may retain a charge even if the instrument is
disconnected from its source of supply.