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Measuring Frequency
Never measure the frequency where the voltage or current level exceeds the specified
WARNING
range. Manually set the voltage or current range if you want to measure frequencies
below 20 Hz.
Your multimeter allows simultaneous monitoring of real-time voltage or current with
frequency, duty cycle, or pulse width measurements. Table 2-15 highlights the primary
functions allowing frequency measurements in your multimeter.
Table 2-15
Legend
mV
mV
A
mA
To measure frequency, rotate the switch to one of the primary functions allowing frequency
measurements highlighted in Table 2-15. Press
read the display.
Pressing
frequency range.
Keysight U1281A/U1282A User's Guide
Rotary switch positions allowing frequency measurements
Default function
AC V
V
AC mV
DC V
V
DC mV
DC A
DC mA (or μA)
controls the input range of the voltage or ampere function, not the
Range
Making Measurements
Function when
Shift
is pressed
Esc
AC V with LPF
AC mV with LPF
Scrolls between
– AC V
– AC+DC V, or
– DC V
Scrolls between
– AC mV
– AC+DC mV, or
– DC mV
Scrolls between
– AC A
– AC+DC A, or
– DC A
Scrolls between
– AC mA (or μA)
– AC+DC mA (or μA), or
– DC mA (or μA)
, then probe the test points and
Hz
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