Operating Information 2
Keysight 3458A Assembly-Level Repair Manual 29
Before Applying Power
– Make sure the line voltage selection switches on the multimeter's rear panel
are set to match the local line voltage.
– Make sure the proper line fuse is installed.
If you have any questions concerning installation or power requirements, refer to
Chapter 1.
Figure 2-1 AC line voltage switch positions
Table 2-1 Line voltage limits
Nominal value (RMS) Allowable limits (RMS) Fuse Fuse part #
100 VAC 90 VAC to 110 VAC 1.5A 250V NTD FE UL 2110-0043
120 VAC 108 VAC to 132 VAC 1.5A 250V NTD FE UL 2110-0043
220 VAC 198 VAC to 242 VAC 0.5A 250V TD FE UL 2110-0202
240 VAC 216 VAC to 250 VAC 0.5A 250V TD FE UL 2110-0202
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