Configuring measurements (Measurement menu)
R&S NRP
1144.1400.12 4.36
E-2
Setting units
The
Unit
drop-down list is used to set the result unit. Only those units
which are compatible with the selected measurement function are in-
cluded as menu items:
Function Unit
Primary, Secondary,
Diff, Sum
W, dBm, dB
µ
V
Ratio
∆
%, dB, 1
SWR, RCoeff
1
Unit –
( )
ä
ä
RLoss dB
Measurement menu
:
W
Func
|
dBm
–
( )
tion…
dB
µ
V
ä
The units can be selected directly from the
Measurement menu by using the right half of
the function rocker switch.
Remote Control
UNIT[1..8]:POWer[?] DBM | W | DBUV
UNIT[1..8]:POWer:RATio[?] DB | DPCT | O
The following tables show the mathematical function used to determine the measurement result. This
function depends on the measurement function and the measurement unit that is set, and is defined as
either not relative to (Relative Off) or relative to (Relative On) a stored reference value
Relative
measurements (page 4.39):
Absolute power measurement (Relative Off)
W
dBm
dB
µ
V
Primary
Secondary
P
mW
1
lg
10
P
⋅
V
µ
1
lg
20
Z
P
Power ratio measurement (Relative Off)
dB
∆
%
1
Ratio (A,B)
B
A
P
P
lg
10
−
1
100
B
A
P
P
B
A
P
P
SWR (A,B)
– –
A
B
A
B
P
P
P
P
−
+
1
1
Rcoeff (A,B)
– –
A
B
P
P
RLoss (A,B)
B
A
P
P
lg
10
– –
Func & Unit : Unit
