To View The Calibration Menu And Security Status - HP 53132A Assembly And Service Manual

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NOTE
Chapter 2 Service
About the HP 53181A Calibration Menu

To View the Calibration Menu and Security Status

The Calibration menu is accessed by holding the Scale & Offset key and
cycling the POWER key. The first item in the Calibration menu is a
message indicating the calibration security status: CAL SECURE or
CAL UNSECURE .
To Unsecure for Calibration
Press and hold Scale & Offset key, then cycle POWER key.
CAL SECURE is displayed.
If CAL UNSECURE is displayed, then the Counter is already unsecured
for calibration, and the remaining steps are not applicable.
Press Scale & Offset key until CODE: is displayed.
Press the appropriate arrow keys to enter the security code " 53181 ",
for example, if 53181 was the security code set at the factory.
Press Enter key.
CAL UNSECURE is displayed.
If "53181" was NOT the correct security code, the Counter would have
displayed BAD CODE.
2-28 Assembly-Level Service Guide