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Disconnect all cables including the power cord from the instrument when changing the
instrument's line voltage. After changing the line voltage setting, ensure the instrument has
fuses of the proper ratings and types for the selected line voltage before applying line power.
Fuse Requirements
An AC input fuse is necessary when powering the instrument. Below is a table of the fuse
required for all models operating with either 110 VAC or 220 VAC input.
Table 1 - Fuse Requirements
Fuse Specification (110 VAC)
Fuse Specification (220 VAC)
Fuse Replacement
Follow the steps below to replace or check the fuse.
1. Locate the fuse box next to the AC input connector in the rear panel.
2. With a small flat blade screwdriver, insert into the fuse box slit to pull and slide out the
fuse box as indicated below.
3. Check and replace fuse (if necessary) for the desired line voltage operation.