Rohde & Schwarz FSW43 - Page 411

Common Measurement Settings
R&S
®
FSW
411User Manual 1173.9411.02 ─ 19
Sweep Time
Defines the duration of a single sweep, during which the defined number of sweep
points are measured. The sweep time can be defined automatically or manually.
The allowed sweep times depend on the device model; refer to the data sheet.
For more information see chapter 6.5.1.7, "How Long the Data is Measured: Sweep
Time", on page 407.
"Auto"
The sweep time is coupled to the span (not zero span), video band-
width (VBW) and resolution bandwidth (RBW). If the span, resolution
bandwidth or video bandwidth is changed, the sweep time is automat-
ically adjusted.
"Manual"
For manual mode, define the sweep time. Allowed values depend on
the ratio of span to RBW and RBW to VBW. For details refer to the
data sheet. Numeric input is always rounded to the nearest possible
sweep time.
Remote command:
[SENSe:]SWEep:TIME:AUTO on page 842
[SENSe:]SWEep:TIME on page 842
Span/RBW
Sets the coupling ratio if RBW is set to auto mode.
For more information see chapter 6.5.1.4, "Coupling Span and RBW", on page 404.
"Auto [100]"
"resolution bandwidth = span/100"
This coupling ratio is the default setting of the R&S FSW.
"Manual"
The coupling ratio is defined manually.
The span/resolution bandwidth ratio can be set in the range from 1 to
10000.
Remote command:
[SENSe:]BANDwidth|BWIDth[:RESolution]:RATio on page 837
RBW/VBW
Sets the coupling ratio between the resolution bandwidth and the video bandwidth.
This setting is only effective if VBW is set to auto mode.
For more information see chapter 6.5.1.3, "Coupling VBW and RBW", on page 404.
"Sine [1/1]"
"video bandwidth = resolution bandwidth"
This is the default setting for the coupling ratio RBW/VBW and is rec-
ommended if sinusoidal signals are to be measured.
"Pulse [.1]"
"video bandwidth = 10 × resolution bandwidth"
or
"video bandwidth = 10 MHz (= max. VBW)"
Recommended for pulse signals
"Noise [10]"
"video bandwidth = resolution bandwidth/10"
Recommended for noise measurements
Bandwidth, Filter and Sweep Configuration