Keysight Technologies U1273A Guide De L'utilisateur page 65

Table 2-5 Rotary switch positions allowing dBm measurements
Legend Defaul t function
AC V
AC mV
DC V
DC mV
A dBm measurement must use a reference impedance (resistance) to calculate a
NOTE
dB value based on 1 milliwatt. The reference impedance is set to 50 Ω by
default. To select another reference value, see the
reference impedance"
Figure 2-10
Press
Keysight U1273A/U1273AX User's Guide
on page 134.
dBm display
for more than 1 second to exit the dBm function.
Dual
Exit
Making Measurements
is pressed
Function when
AC V with LPF
AC mV with LPF
Cycles between
– AC V,
– AC+DC V, or
– DC V
Cycles between
– AC mV,
– AC+DC mV, or
– DC mV
"Changing the custom dBm
2
65