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Chapter 2 Service
About the HP 53131A/132A Calibration Menu
Assembly-Level Service Guide 2-13
2
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.
2Press 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.”
3Press 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.