1
U1231A/U1232A/U1233A Handheld Digital Multimeter
Service Guide
Agilent Technologies
1
Calibration Procedures
Agilent Calibration Services 2
Closed case calibration 2
Calibration interval 2
Other recommendations for calibration 3
Recommended Test Equipment 4
Basic Operating Test 5
Backlight test 5
Display test 5
Calibration Process 6
Test Considerations 7
Performance Verification Tests 8
Calibration Security 12
Unsecuring the Instrument for Calibration 13
To unsecure the instrument from the front panel 13
To change the calibration security code 15
To reset the calibration security code to its factory default 16
Using the Front Panel for Adjustments 18
Adjustment considerations 18
Adjustment procedure 19
Valid adjustment input values 21
Functional tests 24
Exiting the adjustment mode 26
Calibration Count 27
Calibration Error Codes 28
This chapter contains procedures for verifying the
instrument performance, as well as procedures for making
adjustments (calibration) where necessary.
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