Keysight U1271A - Setting a Custom Dbm Reference Impedance (U1272 A Only); Figure 4-6 Dcibel Display

Multimeter Setup Options 4
Setup Menu Items
U1271A/U1272A User’s Guide 137
To change the decibel display:
1 Press for more than 1 second to enter the
multimeter’s setup menu.
2 Press or until is shown on the
secondary display.
Figure 4-6 dCibEL display
3 Press or to change the decibel display. Select
to disable dB measurements.
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.
Setting a custom dBm reference impedance (U1272A only)
This setting is used with dB measurements (see page 66).
The dBm function is logarithmic, and is based on a
calculation of power delivered to a reference impedance
(resistance), relative to 1 mW.
Setup
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Setup
Parameter Range Default setting
dbrEF (1 to 9999) Ω 50 Ω