1 Getting Started Tutorial
20 Keysight U3402A User’s and Service Guide
Connecting power to the multimeter
Connect the power cord and press the power switch to turn on the multimeter.
The front panel display illuminates while the multimeter performs its power-on
self-test. (If the multimeter does not power-on, refer to the “Operating Checklist”
on page 90). During the power-on session, press to hold the full display.
Press any key to resume the power-on self-test.
The multimeter powers up in the DC voltage function with autoranging enabled.
If self-test is successful, the multimeter goes to normal operation.
If the self-test fails, either a full annunciator or a blank display is displayed
without entering the normal operation. In the unlikely event that the self-test
repeatedly fails, contact your nearest Keysight Sales and Service Office.
The multimeter will operate at any line voltage between 90 VAC and 264 VAC
when the line voltage selector is set properly with frequency range 50 Hz or 60 Hz.
– Before turning on the multimeter, make sure the line voltage selector is
set to the correct position for the applied line voltage to the power line
cord connector.
– Do not apply a line voltage that exceeds the specified range of the line
cord connector.
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