The Spectrum Application (RF Measurements)
R&S
®
FPL1000
424
User Manual 1178.3370.02 ─ 11
"Lin"
Activates linear subtraction, which means that the power level values
are converted into linear units prior to subtraction. After the subtrac-
tion, the data is converted back into its original unit.
This setting takes effect if the grid is set to a linear scale. In this case,
subtraction is done in two ways (depending on the set unit):
●
The unit is set to either W or dBm: the data is converted into W
prior to subtraction, i.e. averaging is done in W.
●
The unit is set to either V, A, dBmV, dBµV, dBµA or dBpW: the
data is converted into V prior to subtraction, i.e. subtraction is
done in V.
"Log"
Activates logarithmic subtraction.
This subtraction method only takes effect if the grid is set to a loga-
rithmic scale, i.e. the unit of the data is dBm. In this case the values
are subtracted in dBm. Otherwise (i.e. with linear scaling) the behav-
ior is the same as with linear subtraction.
"Power"
Activates linear power subtraction.
The power level values are converted into unit Watt prior to subtrac-
tion. After the subtraction, the data is converted back into its original
unit.
Unlike the linear mode, the subtraction is always done in W.
Remote command:
6.11
Display and Limit Lines
Display and limit lines help you analyze a measurement trace.
Display lines are only available in the Spectrum application.
Access
: "Overview" > "Analysis" > "Lines"
For remote operation, see
Chapter 10.8.9, "Configuring Display Lines"
6.11.1
Display Lines
6.11.1.1
Basics on Display Lines
Display lines help you analyze a trace – as do markers. The function of a display line is
comparable to that of a ruler that can be shifted on the trace in order to mark absolute
values. They are used exclusively to visually mark relevant frequencies or points in
Display and Limit Lines
