HP 181A manual To View the Calibration Menu and Security Status

2

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

1Press 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.

2Press Scale & Offset key until CODE: is displayed.

3Press the appropriate arrow keys to enter the security code “53181”, for example, if 53181 was the security code set at the factory.

4Press Enter key.

CAL UNSECURE is displayed.

NOTE	If “53181” was NOT the correct security code, the Counter would have
	displayed BAD CODE.

2-28 Assembly-Level Service Guide