Service 2
Keysight 53210A/53220A/53230A Assembly Level Service Guide 109
About the Keysight 53210A/53220A/53230A Calibration Menu
Overview of the Keysight 53210A/53220A/53230A calibration menu
The Calibration menu is accessed by pressing the Utility key and then the Cal /
AutoCal softkey. All of the calibration factors and security settings are stored in
non-volatile memory, and do not change when power has been off or after a
remote interface reset.
A calibration security code feature allows you to enter a security code (electronic
key) to prevent accidental or unauthorized calibrations of the counter. The
security code is set to AT53210A, AT53220A or AT53230A (corresponding to the
model) when the counter is shipped from the factory. If you change, and then
forget, your security code, you can reset the security code to a blank code by
resetting all of the non-volatile memory to a default state. (Refer to the Procedure
“Resetting the security code to a null” on page 151.) Then you can enter a new
code.
If you are familiar with the information provided in this section, proceed to the
section titled “The Keysight 53210A/53220A/53230A calibration procedures” on
page 100 to calibrate your counter. This section, “About the Keysight 53210A/
53220A/53230A Calibration Menu,” can be used as a reference. Your counter
should be calibrated at least once each year to maintain specification accuracy.
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