User`s guide

Making Measurements 2
Measuring AC Voltage
U1273A/U1273AX User’s Guide 37
Using the LPF (Low Pass Filter) function for AC
measurements
Your multimeter is equipped with an AC low- pass filter to
help reduce unwanted electronic noise when measuring AC
voltage or AC frequency.
Set up your multimeter to measure AC voltage as shown in
Figure 2- 2. Press to activate the LPF option. Your
multimeter continues measuring in the chosen AC mode, but
now the signal diverts through a filter that blocks unwanted
voltages above 1 kHz. Probe the test points, and read the
display.
Table 2- 2 Rotary switch positions allowing AC voltage measurements
with LPF
Legend Default function Function when is pressed
AC V AC V with LPF
AC mV AC mV with LPF
S
h
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f
t
V
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w
E
s
c
S
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V
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