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1
Calibration Procedures
Unsecuring the Instrument for Calibration
22
1 Before you begin, note down the last four digits of the
multimeter's serial number (located at the bottom of the
multimeter's rear panel).
2 Power- on the multimeter and press the
keys simultaneously for more that 1 second to enter the
calibration security code entry mode.
3
is shown in the secondary display while the
security code is shown in the primary display.
4 Press
for more than 1 second to enter the
calibration security code reset mode. The secondary
display shows
Figure 1-7 SEr.no display
5 Set the code to the same as the last four digits of the
instrument's serial number.
Press
or
to the left.
Dual
Press
or
Exit
Setup
6 Press
to confirm the entry.
7 If the four digits entered are correct, the secondary
display will show
now set to the its factory default code, 1234.
If you want to enter a new security code, see
calibration security code"
record down the new security code.
.
to move the cursor to the right or
to increment or decrement the digit.
. The calibration security code is
on page 20. Ensure that you
U1271A/U1272A Service Guide
and
"To change the
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