User manual

Getting Started
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. To verify basic voltage functions without a load, follow these steps.
1. Remove all leads from the output connectors.
2. Turn on the power supply.
3. Push Menu to bring up the R
eset All menu. This menu allows you to set the instrument to default settings.
4. Push Enter.
5. Push the up arrow button to select Yes.PushEnter to restore the default settings.
6. Push the output On/Off button to enable the output. The OFF message above and to the left of the voltage display will
turn from Off to CV. The meter indicator should be lit and the m eter readings should show 1 V and 0 A.
7. Check that the front-panel voltmeter properly responds to the number keys.
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 s et the voltage value to the maximum allowable for your
power supply, as indicated on the front panel of the unit.
9. Check if the displayed voltage value is approximately the same value as the voltage setting.
Current output check. To verify the basic current functions with a short across the power supply output, follow these
steps:
1. Remove all leads from the output connectors.
2. Turn on the power supply.
3. Push Menu to bring up the Reset All menu. This menu allows you to set the instrument to default settings.
4. Push Enter.
5. Push the u p arrow button to select Yes. Push Enter to enable the default settings.
6. Ensure that the output is disabled and the display OFF message is turned on. If needed, push the output On/Off button.
7. Use an insulated test lead to connect a short across the (+) and (-) output terminals.
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 pow er 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 output On/Off button to enable the output. The CC message should be lit.
9. Push I-set and use the numeric keys and Enter button to set the current value to 0 A. Check if the displayed c urrent
value is approximately 0 A.
PWS2185, PWS2323, PWS2326, and PWS2721 User Manual 5