The Spectrum Application (RF Measurements)
R&S
®
FPL1000
488
User Manual 1178.3370.02 ─ 03
Trace Math Off
Deactivates any previously selected trace math functions.
Remote command:
CALC:MATH:STAT OFF
, see
Trace Math Position
Defines the zero point on the y-axis of the resulting trace in % of the diagram height.
The range of values extends from -100 % to +200 %.
Remote command:
Trace Math Mode
Defines the mode for the trace math calculations.
"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:
7.11 Display and Limit Lines
Display and limit lines help you analyze a measurement trace.
Display lines are only available in the Spectrum and (optional) Analog Demodulation
applications.
In the I/Q Analyzer application, lines are only available for measurements in the fre-
quency domain.
Display and Limit Lines
