Service 2
Keysight 53210A/53220A/53230A Assembly Level Service Guide 131
– If the calibration step FAILS, after a few seconds the counter displays:
– “Computed calibration correction factor out of range” and also “Calibration step
failed”.
– After several seconds, “Calibration step failed” is cleared but “Computed
calibration correction factor out of range” remains.
–The Cal Count does not update.
– Press the Back - Local key to clear the “Computed calibration correction factor out of
range” message.
12 If the correction factor is out of range, the entered voltage value does not
agree with the power supply output ± 1.0 mVolt. Correct the mismatch and try
again.
13 If the Positive Voltage calibration passes, repeat steps 3 through 13 using
-4.096 VDC and Negative Voltage for the Cal Step selection.
14 If the calibration fails (“Calibration step failed”), first verify the input voltage is
correct (within 1.0 milliVolt) and the power supply output is connected and
turned on. Then, refer to the troubleshooting procedures starting on page 160.
15 To check for error messages, refer to the Summary of internal DAC remote
calibration: below for information on how to read the error message(s) from a
remote computer.
16 If you are able to read the error message(s), consult the “Error Messages” on
page 174 for what to do after receiving a specific calibration error message.
If the calibration fails, the current calibration constants remain unchanged.
If you do not have a remote computer available (requires a LAN, USB or GPIB
interface) or are not proficient at programming, contact the nearest Keysight
Service Center for information and help on sending the counter to Keysight for
repair and/or calibration. (See website information on page 2 of this guide.)