Agilent Technologies U1251A manual Selecting display with the Hz button

1 Getting Started Tutorial

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				to access
	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 appear on the primary
	display by pressing		again. This enables the
	simultaneous monitoring of real- time voltage and current
	with frequency, duty cycle, or pulse width. Voltage or
	current resumes on primary display after you press and hold
		for more than 1 second.
Table 1-7Selecting display with the Hz button
Rotary switch position (Function)		Primary display		Secondary display
for U1252A		Frequency (Hz)		AC V
(AC voltage)		Pulse width (ms)
		Duty cycle (%)
V for U1251A		Frequency (Hz)		DC V
for U1252A		Pulse width (ms)
(DC voltage)		Duty cycle (%)
for U1252A		Frequency (Hz)		AC + DC V
(AC + DC voltage)
		Pulse width (ms)
		Duty cycle (%)
		Frequency (Hz)		AC mV
(AC voltage)		Pulse width (ms)
		Duty cycle (%)
		Frequency (Hz)		DC mV
(DC voltage)		Pulse width (ms)
		Duty cycle (%)

16 Agilent U1251A/U1252A User’s and Service Guide