34410A/11A/L4411A User’s Guide 3
Safety Information
Do not defeat power cord safety ground fea-
ture. Plug in to a grounded (earthed) outlet.
Do not use product in any manner not specified
by the manufacturer.
Do not install substitute parts or perform any
unauthorized modification to the product.
Return the product to a Keysight Technologies
Sales and Service Office for service and repair
to ensure that safety features are maintained.
Safety Symbols
Main Power and Test Input Discon-
nect: Unplug instrument from wall
outlet, remove power cord, and
remove all probes from all termi-
nals before servicing. Only quali-
fied, service-trained personnel
should remove the cover from the
instrument.
Line and Current Protection Fuses:
For continued protection against
fire, replace the line fuse and the
current-protection fuse only with
fuses of the specified type and rat-
ing.
Front/Rear Switch: Do not change
the position of the Front/Rear
switch on the front panel while sig-
nals are present on either the front
or rear set of terminals. The switch
is not intended as an active multi-
plexer. Switching while high volt-
ages or currents are present may
cause instrument damage and lead
to the risk of electric shock.
IEC Measurement Category II. The
HI and LO input terminals may be
connected to mains in IEC Cate-
gory II installations for line volt-
ages up to 300 VAC. To avoid the
danger of electric shock, do not
connect the inputs to mains for
line voltages above 300 VAC. See
"IEC Measurement Category II
Overvoltage Protection" on the fol-
lowing page for further informa-
tion.
Protection Limits: To avoid instru-
ment damage and the risk of elec-
tric shock, do not exceed any of
the Protection Limits defined in the
following section.
Earth Ground
Chassis Ground
Risk of electric shock
Refer to manual for addi-
tional safety information
CAT II
(300V)
IEC Measurement Category
II. Inputs may be connected
to mains (up to 300 VAC)
under Category II overvolt-
age conditions.
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