To Secure Against Calibration - HP 53132A Assembly And Service Manual

Chapter 2 Service
About the HP 53131A/132A Calibration Menu

To Secure Against Calibration

1 Press and hold Scale & Offset key, then cycle POWER key.
CAL UNSECURE is displayed. If CAL SECURE is displayed, then the
Counter is already secured against calibration and the remaining steps
are not applicable.
2 Press Scale & Offset key until CODE: is displayed.
3 Press the appropriate arrow keys to enter the security code, then
press Enter key.
CAL SECURE is displayed.
To Change to a New Security Code
1 Press and hold Scale & Offset key, then cycle POWER key.
2 Unsecure for calibration by the using the procedure described in
the section titled "To Unsecure for Calibration."
3 Press Scale & Offset key until CODE: is displayed.
4 Press the appropriate arrow keys to enter the new or customized
security code, then press Enter key.
A scrolling message will appear, indicating what the new code is.
For example, the Counter displays the NEW CODE IS 5 if you entered "5"
as the new code.
Assembly-Level Service Guide 2-13