Rohde & Schwarz FSW-K40 - Spot Noise

Measurements and Result Displays
R&S
®
FSW-K40
16User Manual 1173.9286.02 ─ 15
Type Shows the number of the trace that is integrated (T[x]).
Start / Stop Offset Shows the start and stop offset of the integration interval.
Int. PHN Shows the Integrated Phase Noise.
The integral is calculated over the frequency range defined by the Start and Stop
Offset values.
PM Shows the Residual PM result in degrees and rad.
FM Shows the Residual FM results in Hz.
Jitter Shows the Jitter in seconds.
For more information on residual noise see Chapter 4.2, "Residual Effects",
on page 23.
Remote command:
Querying Residual PM:
FETCh:PNOise<t>:RPM? on page 129
Querying Residual FM:
FETCh:PNOise<t>:RFM? on page 129
Querying Jitter:
FETCh:PNOise<t>:RMS? on page 129
Querying Integrated Phase Noise
Querying user ranges:
FETCh:PNOise<t>:USER<range>:RFM? on page 130
FETCh:PNOise<t>:USER<range>:RMS? on page 130
FETCh:PNOise<t>:USER<range>:RPM? on page 131
Spot Noise
Spot noise is the phase noise at a particular frequency offset (or spot) that is part of the
measurement range. It is thus like a fixed marker.
The unit of spot noise results is dBc/Hz. The application shows the results in a table.
The table consists of a variable number of 10
x
frequencies (depending on the mea-
surement range), and a maximum of five user frequencies, with each row containing
the spot noise information for a particular frequency offset.
The spot noise information is made up out of several variables.