Chapter 2 Service
About the Agilent 53181A Calibration Menu
Assembly-Level Service Guide 2-29
2
To Initiate the Calibration Routines
1 Press and hold Scale & Offset key, then cycle POWER key.
2 Unsecure for calibration by performing the preceding procedure.
3 Press Scale & Offset key until CAL: OFFS1? is displayed.
4 Press any one of the arrow keys until your calibration choice (that is, CAL:
GAIN 1?, or CAL: TIMEBAS?) is displayed.
Note that the timebase choice (CAL: TIMEBAS?) only appears when the Timebase
Option is installed.
5 Press Enter key.
A scrolling message is displayed.
6 Follow the instructions in the scrolling message, and press Enter key to start the
calibration.
The Counter momentarily displays CALIBRATING, and then displays the calibration
test name and pass/fail status (for example, OFFS 1 PASS ).
When the calibration completes, a pass/fail message will be displayed. If the
calibration failed, then the calibration factors remain unchanged.
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.
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