Keithley Series 2200 User Manual page 24

Getting Started
6. Push the front-panel On/Off button to turn on the outputs. The OFF messages on the display should be replaced by
current readings and the CV indicators should turn on. The upper line of the display should show the actual output voltage.
7. Check that the front-panel voltmeter properly responds to the number keys. First, select a channel using one of the
channel select buttons.
Push V-set, use the number keys to set the voltage value to 0 and push Enter. Check if the displayed voltage value is
approximately 0 V and check if the displayed current value is approximately 0 A. You can confirm the 0 V setting with
a voltmeter.
8. Push V-set and use the numeric keys and Enter button to set the voltage value to the maximum allowable for your power
supply, as indicated on the unit's front-panel.
9. Check if the displayed voltage value is approximately the same value as the voltage setting.
10. Repeat steps 7 through 9 for each output channel.
Current output check.
steps:
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.
6. Ensure that the output is disabled and the display OFF messages are shown for all channels. If needed, push the On/Off
button to ensure that the outputs are disabled and the OFF messages are displayed.
7. Use an insulated test lead to connect a short across the (+) and (-) output terminals of the channel you will be testing.
Use a wire size sufficient to handle the maximum current. You should use at least a 22 gauge wire.
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.
8. Push the On/Off button to enable the outputs. The CC indicator should be on the channel with the shorted output.
9. Select a channel using one of the channel select buttons.
10. Push I-set and use the numeric keys and Enter button to set the current value to 0 A. Check if the displayed current
value is approximately 0 A.
11. Push I-set and use the numeric keys and Enter button to set the current value to the maximum allowable for the output
channel. Check if the displayed current value is approximately the same value as the maximum allowable.
12. Turn all outputs off by pressing the Output On/Off button. Note that the outputs are off when the display for all
channels shows <OFF>.
13. Repeat steps 7 through 12 for each output channel.
14. Turn off the instrument and remove the short wire from the (+) and (-) output terminals.
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To verify the basic current functions with a short across the power supply output, follow these
Series 2200 Multi-Channel Programmable DC Power Supplies User Manual