Valhalla Scientific 4300C, Руководство по эксплуатации

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Rear Panel
The rear panel of the 4300C may vary from unit to unit according to the optional features installed. This
section of the manual refers to the standard model without any optional features or modifications. If the
4300C that you are using features terminals or connectors not described in this section, please refer to
the addendum section that may reference the particularities of your model. Here is an outline to the use
of each of the rear panel controls and connectors.
Figure 5 - Rear Panel Sections
Line Voltage Switch
The line voltage switch allows the user to select the power settings according to the
local AC line voltage. By sliding the switch upwards, the number 115 will appear on
the switch. The instrument is now configured for line voltages of 115VAC ± 10%. By
sliding the switch downwards, the number 230 will appear. The instrument can now
be used with line voltages of 230VAC ±10%. Prior to powering on the ohmmeter, it is
important to verify that the switch is set for the correct line voltage.
Selecting the incorrect line voltage setting may cause damage to the
instrument!
Fuse Holder
The line power fuse must match the line voltage selection as follows:
•
105-125VAC – 3A SLO-BLO
•
210-250VAC – 1.5A SLO-BLO
The fuse holder is located on the rear panel. To install a fuse, first disconnect the Ohmmeter’s power cord.
Insert one end of the fuse into the fuse cap. Insert the fuse cap into the fuse holder. With a small flathead
screwdriver, push in on the fuse cap and rotate it clockwise.