Agilent Technologies 4156b, User Manual, Page: 5 / 414

Agilent 4155B/4156B User’s Guide Vol.2, Edition 5 5
• DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT
Because of the danger of introducing additional hazards, do not install
substitute parts or perform any unauthorized modification to the instrument.
Return the instrument to a Agilent Technologies Sales and Service Office for
services and repair to ensure that safety features are maintained.
• DANGEROUS PROCEDURE WARNINGS
Warnings, such as example below, precede potentially dangerous procedures
throughout this manual. Instructions contained in the warnings must be
followed.
WARNING
Dangerous Voltage, capable of causing death, are present in this instrument.
Use extreme caution when handling, testing, and adjusting.
• Safety Symbols
The general definitions of safety symbols used on equipment or in manuals are
listed below.
Instruction manual symbol: the product will be marked with this symbol when it
is necessary for the user to refer to the instruction manual in order to protect
against damage to the instrument.
Indicates dangerous voltage and potential for electrical shock. Do not touch
terminals that have this symbol when insrument is on.
Protective conductor terminal. For protection against electrical shock in case of
a fault. Used with field wiring terminals to indicate the terminal which must be
connected to ground before operating equipment.
Frame or chassis terminal. A connection to the frame (chassis) of the equipment
which normally includes all exposed metal structures.
Indicates earth (ground) terminal.
Alternating current.
Direct current.
ON (Supply).