User`s guide
4  Agilent 16440A User’s Guide, Edition 4 
• GROUND THE INSTRUMENT
This is Safety Class I instrument. To minimize shock hazard, the instrument 
chassis and cabinet must be connected to an electrical ground. The power 
terminal and the power cable must meet International Electrotechnical 
Commission (IEC) safety standards.
• DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
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.
• KEEP AWAY FROM LIVE CIRCUITS
Operation personnel must not remove instrument covers. Component 
replacement and internal adjustments must be made by qualified 
maintenance personnel. Do not replace components with power cable 
connected. Under certain conditions, dangerous voltages may exist even 
with the power cable removed. To avoid injuries, always disconnect power 
and discharge circuits before touching them.
• DO NOT SERVICE OR ADJUST ALONE
Do not attempt internal service or adjustment unless another person, capable 
of rendering first aid and resuscitation, is present.
• 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.










