The Spectrum Application (RF Measurements)
R&S
®
FPL1000
120
User Manual 1178.3370.02 ─ 11
frequency of the internal generator is coupled to the (center) frequency of the analyzer
and can be set from 5
kHz to the maximum frequency of the R&S
FPL1000. However,
you can define an offset for the internal generator frequency.
As a result, the measured power levels at the RF input are displayed versus the provi-
ded power levels of the internal generator output.
This measurement is only available if the optional internal generator is installed
(R&S
FPL1-B9) and active, and only in the Spectrum application.
Thus, you can use the internal generator signal as a reference input signal for your
power-converting DUT. Then you can compare the DUT input to its output at the RF
input of the analyzer. Ideally, the result is a linear trace, that is: the output is directly
proportional to the input power. Any distortion to the linear trace indicates the effects of
the DUT. This result is useful, for example, to determine the compression point for
amplifiers.
Measurements and Results
