2 Keysight 3458A Quick Reference Guide
Contacting Keysight
www.keysight.com/find/assist 
(worldwide contact information for 
repair and service)
Printing History
The printing history shown below 
lists the printing dates of all 
editions created for this quick 
reference guide. The edition 
number changes as the quick 
reference guide undergoes 
subsequent revisions. Editions are 
numbered sequentially starting 
with Edition 1. Each new edition 
includes a revised copy of this 
printing history page.
Edition 1 (P/N 03458-90005): 
MAY 1988
Edition 2 (P/N 03458-90008): 
DEC. 2000
Edition 3 (P/N 03458-90008): 
AUG. 2017
Safety Notices
A CAUTION notice denotes a 
hazard. It calls attention to an 
operating procedure, practice, or 
the like that, if not correctly 
performed or adhered to, could 
result in damage to the product or 
loss of important data. Do not 
proceed beyond a CAUTION notice 
until the indicated conditions are 
fully understood and met.
A WARNING notice denotes a 
hazard. It calls attention to an 
operating procedure, practice, or 
the like that, if not correctly 
performed or adhered to, could 
result in personal injury or 
death. Do not proceed beyond a 
WARNING notice until the 
indicated conditions are fully 
understood and met.
2 Keysight 3458A Quick Reference Guide
For further safety information details, refer to the 
Keysight 3458A Multimeter User’s Guide.