Technical data

Calibration Procedures 1
Unsecuring the Instrument for Calibration
U1270 Series Service Guide 41
If the four digits entered are correct, the display will show
PASS. The calibration security code is now set to its factory
default code, 1234.
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.
If you want to enter a new security code, see “To change the
calibration security code” on page 39. Ensure that you
record down the new security code.