Measurements and Results
R&S
®
FSVA3000/ R&S
®
FSV3000
125User Manual 1178.8520.02 ─ 01
After each sweep is completed, a new one is started automatically. While the mea-
surement is running, the [RUN CONT] key is highlighted. To stop the measure-
ment, press the [RUN CONT] key again. The key is no longer highlighted. The
results are not deleted until a new measurement is started.
7.2.3 Measurement Examples - Measuring a Sinusoidal Signal
One of the most common measurement tasks that can be handled using a signal ana-
lyzer is determining the level and frequency of a signal. When measuring an unknown
signal, you can usually start with the presettings.
High input values
If levels higher than +30 dBm (=1 W) are expected or are possible, a power attenuator
must be inserted before the RF input of the analyzer. Otherwise, signal levels exceed-
ing 30 dBm can damage the RF attenuator or the input mixer. The total power of all
occurring signals must be taken into account.
Test setup
●
Connect the RF output of the signal generator to the RF input of the R&S FSV/A.
Table 7-1: Signal generator settings (e.g. R&S SMW)
Frequency 128 MHz
Level -30 dBm
● Measuring the Level and Frequency Using Markers.............................................125
● Measuring the Signal Frequency Using the Signal Counter................................. 127
7.2.3.1 Measuring the Level and Frequency Using Markers
The level and frequency of a sinusoidal signal can be measured easily using the
marker function. The R&S FSV/A always displays its amplitude and frequency at the
marker position. The frequency measurement uncertainty is determined by the refer-
ence frequency of the R&S FSV/A, the resolution of the marker frequency display and
the number of sweep points.
1. Select [PRESET] to reset the instrument.
2. Connect the signal to be measured to the "RF INPUT" connector on the
R&S FSV/A.
3. Set the center frequency to 128
MHz.
4. Reduce the frequency span to 1
MHz.
Basic Measurements
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