The Spectrum Application
R&S
®
FPC
116
User Manual 1178.4130.02 ─ 07
Removes the trace from the diagram.
Selecting the trace mode
1. Press the "Trace" key to open the trace menu.
2. Select the "Trace Mode" menu item to open the trace mode menu.
3. Select the trace mode you want to work with.
If you have selected the average trace mode ("Average" menu item), the R&S
FPC
opens an input field to define the number of measurements included in the averag-
ing ("Average Count").
4. Enter the number of sweeps to include in the averaging.
In continuous sweep mode, the R&S
FPC now calculates the moving average over
the number of sweeps you have specified. In single sweep mode, it stops the mea-
surement after finishing the sweeps and averages the traces.
14.8.2
Detector
The number of samples collected in a single sweep usually is very large, especially if
the span is large. However, the display of the R&S
FPC can display only a limited num-
ber of results on the y-axis, because it is limited by the display resolution (one pixel
usually combines a large quantity of measurement points). Therefore, it has to reduce
the data and combine measurement results to fit them on the display.
The detector determines the way the R&S
FPC combines and displays the results for
one pixel. The data base is the video voltage of the analyzer.
The following detectors are supported.
●
"Auto Peak"
The auto peak detector displays both the highest and the lowest power levels that
were measured in the frequency range covered by a pixel.
The auto peak detector loses no information. If a signal's power level fluctuates (for
example in case of noise), the width of the trace depends on the magnitude of the
signal fluctuation.
●
"Max Peak"
The max peak detector displays only the highest level that was measured in the
frequency range covered by a pixel.
The max peak detector is useful for measurements on pulses or FM signals, for
example.
●
"Min Peak"
The min peak detector displays only the lowest level that was measured in the fre-
quency range covered by a pixel.
The min peak detector displays sine signals with the correct level and suppresses
noise. Therefore it is useful to find sine signals in the vicinity of noise.
●
"RMS"
Trace Configuration
