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Model 2231A-30-3 Triple-channel DC Power Supply Reference Manual Section 2:Quick reference
077100401/September 2014
2-7
If the factory calibration data are lost, the screen displays the following information for 2
seconds:
Factory Calibration Data Lost
If no error occurs during the self-test, the screen should display as below: the first row is the
output voltage of the 3 channels, and the second row is the current or the OFF status
indicator.
10.00 V 11.00 V 3.00 V
0.000 A 0.000 A 0.000 A
Check the output
The following procedures verify that the power supply outputs its rated voltage and current and
properly responds to operations from the front panel.
Voltage output check
To verify basic voltage function without a load, please follow these 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 keys to select
Yes
. Push
Enter
to enable the default settings.
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 buttons. First, select a
channel using one of the channel select buttons. Push
V-set
, use the number buttons 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 buttons 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.