8
Keysight U1401B Quick Start Guide
Functions and Features
Action
Steps
Selects AC, DC, or AC+DC
measurement
Press
Toggles peak hold mode on and off
Press and hold
for > 1 s
Freezes the measured value
With data hold mode enabled, press
. Press and hold
for > 1 s
to exit.
Enters or exits the refresh hold mode With refresh hold mode enabled, press
Enters or exits the dynamic recording
mode
Press and hold
for > 1 s
Offsets the measured value
Press
Selects the measurement range
Press
Turns on autorange
Press and hold
for > 1 s
Turns on dual display
Press
Turns on the frequency measurement
function
Press
Enables the shifted functions of the
keypad
Press
Toggles the backlight on or off
Press and hold
for > 1 s