Keysight Technologies B1505A User Manual page 13

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.
• Source/Monitor Terminals
Source/monitor unit, SMU, can simultaneously perform DC voltage or current output
and measurement. Typical SMU has the Force, Guard, Sense, and Circuit Common
terminals as shown below. Normally the Force, Guard, and Sense terminals are the
same potential. Voltage marked around the terminals indicates the Protection Limits.
Force and Sense must be connected to a terminal of a device under test for the Kelvin
connection which is effective for high current measurement and low resistance
measurement. For the non-Kelvin connection to ease the connections, connect Force
only. Do not connect Sense. It must be opened.