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
Reset 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
. Push
Enter
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 meter 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 con
fi
rm 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 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 up 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 suf
fi
cient 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 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 current
value is approximately 0 A.
PWS2185, PWS2323, PWS2326, and PWS2721 User Manual
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