Keysight Technologies 3458A Guide D'utilisation page 55

You do not have to run self-test to get an error. The multimeter detects errors that
occur while entering data, when changing functions or ranges, and so on. The
multimeter beeps whenever it detects an error.
Whenever you want to clear information (such as an error description) from the
display and return it to displaying measurements, press:
You can also clear the display by repeatedly pressing the Back Space key
NOTE
(unshifted).
Resetting the multimeter
Many times during operation, you may wish to return to the power-on state. The
front panel Reset key returns you to the power-on state without having to cycle
the multimeter's power. To reset the multimeter, press:
The multimeter begins the reset process with a display test which illuminates all
display elements including the annunciators as shown in
down the Reset key, the multimeter continuously performs its display test).
Figure 2-4
Keysight 3458A User's Guide
Clear
Back
Reset
Display test
Getting Started
Figure 2-4. (By holding
2
55