Spectrum Measurements
R&S
®
ESR
403
User Manual 1175.7068.02 ─ 12
Figure 6-20: Screen layout of the spectrogram result display
1 = Spectrum result display
2 = Spectrogram result display
3 = Frame indicator
4 = Time stamp / frame number
5 = Color map
6 = Marker
7 = Deltamarker
8 = Marker list
●
Spectrum Analyzer result display (1 in
)
This result display is the same as the Spectrum Analyzer with the x-axis represent-
ing the frequency span or time (span
=
0) and the y-axis the power level. Configure
and use this display in the same way as you would in Spectrum Analyzer mode.
All traces are available and you can view those traces just like in the base unit (see
on page 171). The trace modes View and Blank are
not available for trace 1.
While performing a measurement the trace is updated continuously. You can also
restore the trace to a point that has already been recorded by selecting a specific
frame (see
on page 373). This is possible in Single Sweep mode or
if the sweep has been stopped.
●
Spectrogram result display (2)
The data displayed in the Spectrogram is always based on the data of trace 1 in
the Spectrum Analyzer result display. The Spectrogram can handle measurements
in the frequency domain (span
>
0) as well as measurements in the time domain
(span
=
0)
The Spectrogram is a cartesian diagram. The x-axis shows the power distribution
of a measured signal over a specified frequency or time range. Different power lev-
els are displayed in different colors. The y-axis represents the time with the top of
the diagram being the current timeframe (the measurement runs from top to bot-
tom). Each line (or trace) of the y-axis represents one captured frame. The frames
are sorted in chronological order. One frame is equal to a certain number of sweep
Analysis
