Technical data

Calibration Procedures 1
Unsecuring the Instrument for Calibration
U1270 Series Service Guide 39
If the correct security code is entered, PASS is shown briefly,
after which the instrument will enter the adjustment mode.
If the incorrect security code is entered, an error code will
appear briefly, after which the instrument will prompt you
for the security code again.
To change the calibration security code
1 After the instrument has been unsecured, press for
more than 1 second.
2 The factory default calibration security code “1234” is
shown on the display if you are changing the calibration
security code for the first time.
Figure 1-6 Changing the calibration security code
3 Set your new calibration security code.
• Press or to move the cursor to the right or
to the left.
• Press or to increment or decrement the digit.
4 Press to save the new calibration security code.
If the new calibration security code has been successfully
stored, the display will show PASS. Record down your new
calibration security code and store it in a safe location.
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