Basic Measurement Examples
R&S
®
FSVA/FSV
113
Quick Start Guide 1321.3066.02 ─ 06
Table 7-3: Signal generator settings (e.g. R&S SMU)
Frequency
128 MHz
Level
-30 dBm
Modulation
50 % AM, 10 kHz AF
1. Set the signal analyzer to the default state by pressing the PRESET key.
The R&S
FSVA/FSV is set to its default state.
2. Set the center frequency to 128 MHz and span to 50 kHz.
a) Press the FREQ key and enter
128 MHz
.
b) Press the SPAN key and enter
50 kHz
.
3. Activate the marker function for measuring the AM modulation depth.
a) Press the MEAS key.
b) Press the "More" key.
c) Press the "AM Mod Depth" softkey.
The R&S
FSVA/FSV automatically sets a marker to the carrier signal in the
center of the diagram and one delta marker each to the upper and lower
AM sidebands. The R&S
FSVA/FSV calculates the AM modulation depth
from the level differences of the delta markers to the main marker and out-
puts the numeric value in the marker field.
Figure 7-7: Measurement of the AM modulation depth
The modulation depth is displayed as "MDepth". The frequency of the AF signal
can be obtained from the frequency display of the delta marker.
Measuring Signal Spectra with Multiple Signals
