Common Measurement Settings
R&S
®
FSPN
115
User Manual 1179.4363.02 ─ 01
The capture range is available for the phase noise measurement.
Remote command:
Sweep/Average Count
Defines the number of measurements to be performed in the single sweep mode. Val-
ues from 0 to 200000 are allowed. If the values 0 or 1 are set, one measurement is
performed.
The sweep count is applied to all the traces in all diagrams.
For "Average" trace mode, the "Sweep Count" also determines the number of individ-
ual measurements used to average the trace.
In continuous sweep mode, a "Sweep Count" = 0 (default) calculates a moving aver-
age over 10 measurements. A "Sweep Count" = 1 calculates no averages.
Remote command:
Selecting the sweep direction
The sweep direction selects the order in which the R&S
FSPN measures the half deca-
des.
For the reverse sweep ("Sweep Forward" = "Off"), the measurement sequence is:
●
Analysis of half decades > 30 MHz
●
Analysis of half decades between 30 MHz and 1 MHz
●
Analysis of half decades < 1 MHz
For the forward sweep ("Sweep Forward" = "On"), the measurement sequence is:
●
Analysis of half decades < 1 MHz
●
Analysis of half decades between 30 MHz and 1 MHz
●
Analysis of half decades > 30 MHz
Otherwise, the measurements are the are the same and yield the same results, regard-
less of the sweep direction you select. The difference is that results near the carrier are
available faster when you select the forward sweep.
Remote command:
Working with the half decade configuration table
The half decade configuration table shows the measurement characteristics for each
half decade that is part of the measurement.
The features of the table depend on the "Half Decade Config" mode:
●
For the
automatic mode
, the table is read only, the values in the table depend on
the settings you have made for the noise measurements (
).
The size (number of rows) depends on the number of half decades that you have
defined.
Automatic half decade configuration is designed to yield the optimal measurement
times for each half decade.
●
For the
manual mode
, you can define custom values for the
(RBW) and the number of
Noise Measurement Configuration
