Power-Up; Line Voltage Selection; Line Power Connection - Keithley 2500 User Manual

1-10 Getting Started

Power-up

Line voltage selection

The Model 2500 operates from a line voltage in the range of 100V/120V/220V/240V,
±10% at a frequency of 50 or 60Hz. Before plugging in the unit make sure the line voltage
setting seen through the small window in the power module
line voltage in your area.
CAUTION
If the voltage setting is not correct, change it as outlined below.
WARNING
1. Pry the small tab that secures the fuse holder to the power module, then remove the
fuse holder.
2. Pull out and rotate the fuse carrier to the correct line voltage setting, then install it in
the fuse holder. Make sure the line voltage shown in the window is correct. Also make
sure the fuse rating for the expected line voltage is correct. (See
3. Reinstall the fuse holder in the power module making sure it is seated fully.

Line power connection

Perform the following steps to connect the Model 2500 to line power and turn it on:
1. Before plugging in the power cord make sure the front panel power switch is in the off
(0) position.
2. Connect the female end of the supplied power cord to the AC receptacle on the rear
panel.
WARNING
3. Turn on the instrument by pressing the front panel power switch to the on (1) position.
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Operating the instrument on an incorrect line voltage may cause dam-
age, possibly voiding the warranty.
Disconnect the line cord and all cables and test leads from the instru-
ment before changing the line voltage setting.
The power cord supplied with the Model 2500 contains a separate
ground for use with grounded outlets. When proper connections are
made, instrument chassis is connected to power line ground through
the ground wire in the power cord. Failure to use a grounded outlet
may result in personal injury or death due to electric shock.
Model 2500 and 2502 User's Manual
(Figure 1-2) is correct for the
"Fuse replacement.")