R&S FSPN, User Manual

Page: 95 / 555

Measurements and Result Displays
R&S
®
FSPN
95 User Manual 1179.4363.02 ─ 01
Remote command:
TRACe<n>[:DATA]?
on page 333
Spot Noise vs Tune PN
The "Spot Noise vs Tune PN" result display shows the phase noise at specific fre-
quency offsets measured on each measurement point. Each measurement point corre-
sponds to a specific tuning voltage (or current) that was applied to the DUT.
The x-axis shows the tuning characteristics of the DC source.
●
For V
supply
the tuning voltage in Volt or current in Ampere, depending on the output
type .
●
For V
tune
and V
aux
the tuning voltage in Volt.
The tuning voltages (alternatively: current) applied during the measurement depends
on the
tuning range you have defined.
The y-axis shows the phase noise measured at a given tuning voltage or current in
dBc/Hz.
You can configure the traces to show the phase noise for specific frequency offsets rel-
ative to the carrier.
Remote command:
TRACe<n>[:DATA]?
on page 333
Spot Noise vs Tune AM
The "Spot Noise vs Tune AM" result display shows the AM noise at specific frequency
offsets measured on each measurement point. Each measurement point corresponds
to a specific tuning voltage (or current) that was applied to the DUT.
The x-axis shows the tuning characteristics of the DC source.
●
For V
supply
the tuning voltage in Volt or current in Ampere, depending on the output
type .
●
For V
tune
and V
aux
the tuning voltage in Volt.
The tuning voltages (alternatively: current) applied during the measurement depends
on the
tuning range you have defined.
The y-axis shows the AM noise measured at a given tuning voltage or current in
dBc/Hz.
You can configure the traces to show the AM noise for specific frequency offsets rela-
tive to the carrier.
Remote command:
TRACe<n>[:DATA]?
on page 333
Frequency (Transient Analysis)
The "Frequency" result display shows the frequency characteristics of the transient
response of the DUT over time.
The x-axis shows the time period over which the signal has been measured. The scale
depends on the measurement time.
The y-axis shows the frequency, either in absolute or relative terms. For a relative
scale, the offset frequencies displayed on the y-axis refer to the center frequency. In
both cases, the grid line in the middle of the diagram represents the center frequency.
Result Displays