Keysight Technologies 3458A Guide D'utilisation page 35

Line power requirements
You can operate the multimeter from a single phase power source delivering 100
VAC, 120 VAC, 220 VAC, or 240 VAC (all values RMS), at 48 to 440 Hz. The power
line voltage can vary by +/- 10% but cannot exceed 250 VAC RMS. Maximum
power consumption is 80 VA (Volt-Amps). The nominal line voltage values and
their corresponding limits are shown in
Possible multimeter damage. Before connecting the multimeter to an AC
CAUTION
power source, verify that the multimeter's line voltage selection switches
are set to match the AC line voltage and that the proper line fuse is installed.
These topics are discussed in the following sections.
Table 1-3
Nominal value (RMS)
100 VAC
120 VAC
220 VAC
240 VAC
Setting the line voltage switches
The line voltage selection is pre-configured according to the country to which it is
shipped. Use the following procedure if you need to change this setting:
1 Remove the multimeter's line power cord before changing the positions of the
2 With a small flat blade screwdriver, move the switches to the appropriate
3 Install the correct line power fuse as described in the next section.
Keysight 3458A User's Guide
Line voltage limits
AC line voltage selection switches
positions as shown in
Table
Allowable limits (RMS)
90 VAC to 110 VAC
108 VAC to 132 VAC
198 VAC to 242 VAC
216 VAC to 250 VAC
Figure 1-2
Installation and Maintenance
1-3.
1
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