Measuring Frequency - Keysight Technologies U1231A Guia Del Usuario

2 Making Measurements

Measuring Frequency

Your multimeter allows simultaneous monitoring of real- time voltage or current
with frequency measurements.
frequency measurements in your multimeter.
Table 2-2 Functions allowing frequency measurement
U1233A
Hz
Hz
Hz
Never measure the frequency where the voltage or current level exceeds the
WARNING
specified range. Manually set the voltage or current range if you want to
measure frequencies below 20 Hz.
– Measuring the frequency of a signal helps detect the presence of harmonic
NOTE
– Frequency is the number of cycles a signal completes each second.
– The multimeter measures the frequency of a voltage or current signal by
82
currents in neutral conductors and determines whether these neutral
currents are the result of unbalanced phases or non-linear loads.
Frequency is defined as 1/Period. Period is defined as the time between the
middle threshold crossings of two consecutive, like-polarity edges, as shown
in Figure 2-26.
counting the number of times the signal crosses a threshold level within a
specified period of time.
Table 2-2 highlights the functions allowing
Legend
U1232A
Hz
Hz
Hz
Keysight U1231A, U1232A, and U1233A User's Guide
U1231A
Hz
Hz
AUX