Keysight U1273A Manual De Instrucciones página 64

2 Making Measurements
Using the LPF (Low Pass Filter) Function for AC+DC measurements
Your multimeter is equipped with an AC low pass filter to help reduce unwanted
electronic noise when measuring a mixed signal.
1 Enable the LPF (You may refer to
2 Rotate the multimeter's rotary switch to
3 Press
Figure 2-9
Making dB Measurements
Your multimeter is capable of displaying voltage as a dB value, either relative to
1 milliwatt (dBm) or a reference voltage of 1 volt (dBV).
Displaying dBm values
To set the multimeter to display voltage values in dBm, first set up your
multimeter to measure voltage as shown in
test points, and read the display. Then, press
are displayed as a dBm value.
64
to activate the low pass filter function (
continues measuring in the AC+DC mode, but now the signal diverts through a
filter that blocks unwanted voltages above 1 kHz
Low Pass Filter(LPF) for AC+DC voltage measurements
"Enabling the filter"
/ .
Figure 2-2 or
until the voltage measurements
Dual
Exit
Keysight U1273A/U1273AX User's Guide
on page 146)
). Your multimeter
Figure 2-5. Probe the