Quick Start
R&S
®
ESR
103
User Manual 1175.7068.02 ─ 12
Figure 3-13: Measurement of two equally-leveled RF sinusoidal signals with a resolution band-
width (1 kHz) which is significantly smaller than their frequency spacing
3.5.3.2
Measuring the Modulation Depth of an AM-Modulated Carrier (Span > 0)
In the frequency range display, the AM side bands can be resolved with a narrow
bandwidth and measured separately. The modulation depth of a carrier modulated with
a sinusoidal signal can then be measured. Since the dynamic range of a signal ana-
lyzer is very large, extremely small modulation depths can also be measured precisely.
For this purpose, the R&S
ESR provides measurement routines that output the modu-
lation depth numerically in % directly.
Test setup
Basic Measurement Examples