Keithley Series 2200 User Manual page 23

3. Connect the power cord that was provided with the instrument to the power connector on the rear-panel. Connect the
power cord plug to a properly grounded electrical outlet.
4. Push the power button on the front-panel.
To power off the instrument, push the front-panel power button.
WARNING. To satisfy safety requirements, always use load wires heavy enough not to overheat when carrying the maximum
short-circuit output current of the power supply. If there is more than one load, then every pair of load wires must be capable
of safely carrying the full-rated current of the power supply.
What To Do If The Instrument Does Not Turn On
To solve problems you might encounter when turning on the instrument, follow these steps:
1. Verify that there is AC power to the power supply.
First, check that the AC power cord is firmly plugged into the power connector on the rear-panel of the power supply.
You should also make sure that the AC power source you plugged the power supply into is energized. Then, check
that the power supply is turned on.
2. Verify the power-line voltage settings.
Check that the line voltage selector switch on the bottom of the instrument is set to the proper value for your country
(110 V or 220 V
AC
NOTE. Under certain circumstances, powering the instrument from a mains voltage for which it is not configured can
cause the mains fuse to open.
3. Verify that the correct power-line fuse is installed.
If the fuse is damaged, replace the fuse for your power supply.
If you set the line selection to 110 V, use a 6.3 A, TH 250 V fuse.
If you set the line selection to 220 V, use a 3.15 A, TH 250 V fuse.
4. If you need more help, contact Keithley.
Check the Output
The following procedures check that the power supply develops its rated outputs and properly responds to operation
from the front-panel.
Voltage output check.
1. Remove all leads from the output connectors.
2. Turn on the power supply.
3. Push Menu. Default Set should appear on the display.
4. Push Enter to bring up the default settings menu. No and Yes should appear on the display.
5. Push the down arrow button to select Yes. Push Enter to enable the default settings.
Series 2200 Multi-Channel Programmable DC Power Supplies User Manual
). Change the voltage setting if it is not correct.
AC
To verify basic voltage functions without a load, follow these steps.
Getting Started
13