Rohde & Schwarz ESW Series, User Manual

Page: 215 / 759

Common Analysis and Display Functions
R&S
®
ESW
215 User Manual 1177.6298.02 ─ 08
"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:
CALCulate<n>:MATH<t>:MODE
on page 530
11.3.6 Spectrogram Settings
Access : "Overview" > "Analysis" > "Traces" > "Spectrogram"
Functions to configure spectrograms described elsewhere:
●
Color mapping: Chapter 11.3.6.2, "Color Map Settings" , on page 217
●
Markers: Chapter 11.4.3.2, "Marker Search (Spectrogram)" , on page 236
Spectrograms in the I/Q Analyzer and Analog Demodulator
Basically, spectrograms in those applications work the same as in the Receiver or
Spectrum application.
However, in the I/Q Analyzer and Analog Demodulator, they have the following distinc-
tive features.
●
Not all result displays support spectrograms.
●
Compared to the Receiver or Spectrum application, a spectrogram can not be
added as an independent result display. Instead, spectrograms relate to a certain
measurement window (or result display). Result diagram and spectrogram are a
single entity in that case and can not be divided.
To view results in a spectrogram, select a window (indicated by a blue frame), then
select [TRACE] > "Spectrogram Config".
Spectrograms are either displayed in "Split" mode (spectrogram is displayed below the
trace diagram), in "Full" mode (trace diagram is not displayed), or not displayed at all
("Off)".
When the "Spectrogram Config"softkey is greyed out, spectrograms are not supported
by the selected result display.
● General Spectrogram Settings ..............................................................................215
● Color Map Settings ................................................................................................217
11.3.6.1 General Spectrogram Settings
Access : "Overview" > "Analysis" > "Traces" > "Spectrogram"
Trace Configuration