User`s guide

Introduction 1
Preparing Your Multimeter
U1273A/U1273AX User’s Guide 13
Power-on options
Some options can be selected only while you turn the
multimeter on. These power- on options are listed in the
table below. To select a power- on option, press and hold the
specified key while turning the rotary switch to any other
position (OFF to ON). Power- on options remain selected
until the multimeter is turned off.
Table 1- 1 Power-on options
Key Description
Checks firmware version. The multimeter’s firmware
version will be shown on the primary display. Press any key
to exit this mode.
Simulates the Auto Power-Off (APO) mode. Press any key
to turn the multimeter back on and resume normal
operation.
Displays the factory default power-on greeting. Press any
key to exit this mode.
Auto Power-Off (APO) is disabled until the multimeter is
turned off. To permanently disable APO, see “Changing the
auto power-off (APO) timer” on page 120.
Displays the user-defined power-on greeting. Press any
key to exit this mode.
Tests the OLED. All OLED pixels are lighted. Use this mode
to verify that there are no dead OLED pixels. Press any key
to exit this mode.
Smooth is enabled until the multimeter is turned off. To
permanently enable Smooth, see “Enabling smooth
mode” on page 128.
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