Instrument Functions
R&S
®
FSVA/FSV
257Operating Manual 1176.7510.02 ─ 09
RMS Average ← Detector ← Trace 1/Trace 2/Trace 3/Trace 4/Trace 5/Trace 6
Selects the "RMS Average" detector.
The quasipeak detector is available with option R&S FSV-K54.
For details see Chapter 3.2.8.6, "Detector Overview", on page 265.
Remote command:
DET CRMS, see [SENSe:][WINDow:]DETector<trace>[:FUNCtion]
on page 860
More Traces
Opens a submenu to select one of the traces not currently displayed in the main menu.
Copy Trace
Opens an edit dialog box to enter the number of the trace memory in which the cur-
rently selected trace will be copied.
Remote command:
TRACe<n>:COPY on page 887
Trace Wizard
Opens the "Trace Wizard" dialog. See Chapter 3.2.8.2, "Configuring Traces",
on page 260.
Spectrogram
Opens the submenu for the spectrogram view (firmware option R&S FSV-K14).
For details on this application refer to Chapter 3.10, "Instrument Functions - Spectro-
gram Measurements", on page 551.
Average Mode
Opens a submenu to select the averaging method for the average trace mode. The fol-
lowing methods are available:
●
Lin
●
Log
●
Power
Logarithmic averaging is recommended to display signals with a low signal to noise
ratio. While positive peak values are decreased in logarithmic averaging due to the
characteristics involved, it is also true that negative peaks are increased relative to the
average value. If the distorted amplitude distribution is averaged, a value is obtained
that is smaller than the actual average value. The difference is -2.5 dB.
This low average value is usually corrected in noise power measurements by a 2.5 dB
factor. Therefore the R&S FSVA/FSV offers the selection of linear averaging. The trace
data is converted to linear values prior to averaging, then averaged and reconverted to
logarithmic values. After these conversions the data is displayed on the screen. The
average value is always correctly displayed irrespective of the signal characteristic.
In case of stationary sinusoidal signals both logarithmic and linear averaging has the
same results.
Measurement Parameters
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