Keysight Technologies U1253B - Selecting Display with the Hz Button; Table 1-9 Selecting Display with the Hz Button

Getting Started 1
Keysight U1253B User’s and Service Guide 47
Selecting display with the Hz button
The frequency measurement function is able to detect the presence of harmonic
currents in neutral conductors and determine whether these neutral currents are
the result of unbalanced phases or non-linear loads.
– Press to enter the Frequency measurement mode for current or voltage
measurements — voltage or current on the secondary display, and frequency
on the primary display.
– Alternatively, pulse width (ms) or duty cycle (%) can be displayed on the
primary display by pressing again. This allows simultaneous monitoring
of real-time voltage or current with frequency, duty cycle, or pulse width.
– Hold for more than 1 second to resume voltage or current reading on
the primary display.
Table 1-9 Selecting display with the Hz button
Rotary switch position (Function) Primary display Secondary display
(For , press to select AC voltage)
Frequency (Hz)
AC VPulse width (ms)
Duty cycle (%)
(Default is DC voltage)
Frequency (Hz)
DC V
Pulse width (ms)
Duty cycle (%)
(Press twice to select AC+DC voltage)
Frequency (Hz)
AC+DC VPulse width (ms)
Duty cycle (%)
(Default is DC voltage)
Frequency (Hz)
DC mVPulse width (ms)
Duty cycle (%)
(Press to select AC voltage)
Frequency (Hz)
AC mVPulse width (ms)
Duty cycle (%)