Measurements and Results
R&S
®
FSW
221
User Manual 1173.9411.02 ─ 43
configure the notches once. The analyzer can then automatically set the generator to
the same settings.
Generator control by the R&S
FSW has the following preconditions on the signal gen-
erator:
●
R&S
SMW
●
Notched Noise option (R&S
SMW-K811) installed
●
Either ARB waveforms or one of the standards supported by the K811 option active
on the generator
Frequency-coupled NPR measurements
For NPR measurements, configuring and re-configuring the carrier frequencies and
notches first on the analyzer, and then on the generator, can become very tedious.
Therefore, frequency coupling is now provided in which the analyzer takes control of
the generator. The frequency on the generator is automatically set to the analyzer fre-
quency, possibly with a fixed factor or offset applied.
7.5.3
NPR Results
The R&S
FSW shows the measurement results in a diagram and a table in numerical
form.
The diagram consists of several elements.
●
A horizontal blue bar at the bottom of the diagram indicates the channel bandwidth.
●
Two vertical blue lines indicate the integration range or integration bandwidth. It is
the same as the channel bandwidth by default (it is labeled "channel bandwidth" in
that case).
●
Vertical green lines indicate notches and their bandwidth. The number of displayed
notches is variable.
Noise Power Ratio (NPR) Measurement
