User Manual

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
400User Manual 1178.3370.02 ─ 09
1 = Spectrum result display
2 = Spectrogram result display
3 = Marker list
4 = Marker
5 = Delta marker
6 = Color map
7 = Timestamp / frame number
8 = Current frame indicator
For more information about spectrogram configuration, see Chapter 7.10.2.2, "Spectro-
gram Settings", on page 407.
Remote commands:
Activating and configuring spectrograms:
Chapter 11.8.7.2, "Configuring Spectrograms", on page 821
Storing results:
MMEMory:STORe<n>:SPECtrogram on page 942
● Time Frames......................................................................................................... 400
● Markers in the Spectrogram..................................................................................402
● Three-Dimensional Spectrograms........................................................................ 402
● Color Maps............................................................................................................404
Time Frames
The time information in the spectrogram is displayed vertically, along the y-axis. Each
line (or trace) of the y-axis represents one or more captured sweep and is called a
time frame or simply "frame". As with standard spectrum traces, several measured
values are combined in one sweep point using the selected detector.
(See "Mapping Samples to sweep Points with the Trace Detector" on page 386).
Frames are sorted in chronological order, beginning with the most recently recorded
frame at the top of the diagram (frame number 0). With the next sweep, the previous
frame is moved further down in the diagram, until the maximum number of captured
frames is reached. The display is updated continuously during the measurement, and
the measured trace data is stored. Spectrogram displays are continued even after sin-
gle measurements unless they are cleared manually.
In three-dimensional spectrograms, frames are displayed vertically. The most recently
recorded frame (frame 0) is added at the front of the display (in the default position).
For more information, see "Three-Dimensional Spectrograms" on page 402.
The maximum number of frames that you can capture is summarized in Table 7-27.
Trace Configuration