Keysight U1251B Guia Del Usuario página 41

Selecting display with the Hz button
The frequency measurement feature helps to detect the presence of harmonic
currents in neutral conductors and determines whether these neutral currents are
the result of unbalanced phases or non-linear loads. Press
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 appear on the primary
display by pressing
real-time voltage and current, with frequency, duty cycle or pulse width. Voltage
or current measurement resumes on the primary display after you press and hold
Table 1-7 Selecting display with the Hz button
Rotary switch position (function)
(AC + DC voltage)
(AC voltage)
(DC voltage)
Keysight U1251B and U1252B User's and Service Guide
for more than 1 second.
Primary display
Frequency (Hz)
Pulse width (ms)
for U1252B
(AC voltage)
Duty cycle (%)
Frequency (Hz)
for U1251B
Pulse width (ms)
for U1252B
(DC voltage)
Duty cycle (%)
Frequency (Hz)
for U1252B
Pulse width (ms)
Duty cycle (%)
Frequency (Hz)
Pulse width (ms)
Duty cycle (%)
Frequency (Hz)
Pulse width (ms)
Duty cycle (%)
again. This enables the simultaneous monitoring of
Getting Started
to access the
Secondary display
AC V
DC V
AC + DC V
AC mV
DC mV
1
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