User`s guide

Multimeter Setup Options 4
Setup Menu Items
U1273A/U1273AX User’s Guide 115
5 Press and hold until the multimeter restarts to return
to normal operation.
Changing the decibel display
This setting is used with dB measurements (see page 45).
You can enable the multimeter to display voltage as a dB
value, either relative to 1 milliwatt (dBm) or a reference
voltage of 1 volt (dBV).
To change the decibel display:
1 Press for more than 1 second to enter the
multimeter’s setup menu.
2 Browse to Menu 1 > dB, and press edit the value.
3 Use the arrow keys to change the decibel display. Select
OFF to disable the decibel display.
4 Press to save your changes (or press to
discard your changes).
5 Press and hold until the multimeter restarts to return
to normal operation.
Changing the custom dBm reference impedance
This setting is used with dB measurements (see page 45).
The dBm function is logarithmic, and is based on a
calculation of power delivered to a reference impedance
(resistance), relative to 1 mW.
Setup
Parameter Range Default setting
dB dBm, dBV, or OFF dBm
Setup
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Setup
Parameter Range Default setting
dBm-R (1 to 9999) Ω 0050 Ω