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Lost factory calibration – B&K Precision 9130 - Manual User Manual

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Note: “X” denotes the channel for which calibration data was lost.

If the calibration data in the EEPROM is corrupted or the factory calibration values are lost, the VFD will display

the following:

Lost Factory Calibration

Note: You will see a “?” on the VFD, in case of any errors are encountered during the self

test routine.

4Output Verification

The following procedures verify that the power supply outputs the correct voltage and current levels and properly

responds to entries from the front panel.

Voltage Output Checkout

The following steps verify basic voltage functions without load.

1) Turn on the power supply.

2) Turn on the outputs using the

On/Off

key

Note: Flashing voltage values indicates that the power supply is in “Set mode, ‘‘Set mode’’ means that

the VFD display shows the set values for voltage and current. In “meter mode” the display will

indicate the actual output voltage and current.

3) Check that the front-panel voltmeter properly responds to number key entries

Enter a different voltage value and wait a few seconds until the meter mode activates. Verify that the

actual output value voltage is identical to the set value. Also verify that the displayed current value is

close to zero.

4) Ensure that the voltage level can be adjusted from zero to the maximum rated value.

5) Verify channels 2 & 3 according to steps 1) – 4)

Current Output Current

The following steps check basic current functions with a short across the power supply’s output.

6) Turn on the power supply

7) Turn the output off

Press

On/Off

key to ensure that the outputs are off. (bottom row indicates “OFF”)

8) Connect the (+) and (-) output terminals of channel 1 with a short, insulated test lead. Use a wire size

sufficient to handle the maximum current.

9)

Set the voltage value with 1V

10) Turn on the output using the

On/Off

key.

11) Adjust the current value

Enter a different current value, wait until the instrument is in meter mode, then make sure that the

displayed current value (actual output value) is the same as the set value.

12) Ensure that the current can be adjusted from zero to the maximum rated value.

13) Turn off the power supply and remove the short wire from the output terminals.