User`s guide
Power Supply and Measurement Safety
•Power Supply Safety
This instrument can output high currents and voltages. Make sure that the load or 
device under test can safely handle the output current and voltage. Also, make sure 
that the connection leads can safely withstand the expected currents and are 
insulated for the expected voltages.
The instrument outputs may be connected so as to float relative to earth ground. 
Isolation or floating voltage ratings are indicated on the instrument, near the output 
terminal or the Circuit Common terminal. There is the danger of electric shock by 
touching the floated measurement terminals. Keep in mind it to protect yourself. And 
it is a reason of using the recommended accessories.
• Voltage/Current Measurement Safety
Multimeters and other instruments capable of measuring high voltages and currents 
are subject to specific safety concerns because of the circuits to which they may be 
connected. To safely use these instruments, you need to understand the markings on 
the instrument near the input terminals, which include the Protection Limits and the 
IEC Measurement Category.
• Protection Limits
Keysight multimeters and other voltage measurement instruments provide protection 
circuitry to prevent damage to the instrument and to protect against the danger of 
electric shock, provided the Protection Limits are not exceeded. To ensure safe 
operation of the instrument, do not exceed the Protection Limits shown on the input 
terminals.










