34401A User’s Guide iii
Safety Information
General
Do not use this product in any manner not
specified by the manufacturer. The protec-
tive features of this product may be
impaired if it is use d in a manner n ot speci-
fied in the operation instructions.
Do not install substitute parts or perform
any unauthorized modification to the prod-
uct. Return the product to an Agilent Tech-
nologies Sales and Serv ice Office for service
and repair to ensure that safety features are
maintained.
Ground the Instrument
If your product is provided with a ground-
ing-type power plug, the instrument chassis
and cover must be connected to an electri-
cal ground to minimize shock hazard. The
ground pin must be firmly c onnected to an
electrical ground (safety gr ound) terminal at
the power outlet. Any interruption of the
protective (grounding) conductor or discon-
nection of the protect ive earth termin al will
cause a potential shock hazard that could
result in personal injury.
Cleaning
Clean the outside of the instrument with a
soft, lint-free, slightly dampened cloth. Do
not use detergent or chemical solvents.

Safety Symbols WARNING

Main Power and Test Input Dis-
connect: Unplug in strument from
wall outlet, remove power cord ,
and remove all probes from all
terminals before servicing. Only
qualified, service-trained perso n-
nel should remove the cove r from
the instrument.
WARNING
Line and Current Prot ection
Fuses: For continued protection
against fire, replace the line fuse
and the current-protection fuse
only with fuses of the specified
type and rating.
WARNING
Front/Rear Switch: Do not
change the position of the
Front/Rear switch on the front
panel while signals are present on
either the front or rear set of ter-
minals. The switch is not intended
as an active m ultiplexer. Sw itch-
ing while high voltages or cur-
rents are present may cause
instrument damage and lead to
the risk of electric shock.
Earth Ground
Chassis Ground
Risk of electric shock
Refer to manual for addi-
tional safety information
Alternating Current
On supply
Off supply
‘In’ position of bi-stable push
switch
‘Out’ position of bi-stable
push switch
CAT II (300V)
IEC Measurement Category II.
Inputs may be connected to
mains (up to 300 VAC) under
Category II overvolt age condi-
tions.