User Manual

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
398User Manual 1178.3370.02 ─ 03
Remote command:
[SENSe:]BANDwidth:VIDeo:AUTO on page 652
[SENSe:]BANDwidth:VIDeo on page 652
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 Time" s depend on the device model; refer to the data sheet.
For more information see Chapter 7.6.1.7, "How Long the Data is Measured: Sweep
Time ", on page 394.
Note: The "Sweep Time" only indicates how long data is captured; the time required to
process the captured data may be considerably longer, in particular for FFT mode. For
FFT mode, an estimated duration is indicated behind the "Sweep Time" in the channel
bar (for RF measurements only).
"Auto"
The "Sweep Time" is coupled to the span (not zero span), video
bandwidth (VBW) and resolution bandwidth (RBW). If the span, reso-
lution bandwidth or video bandwidth is changed, the "Sweep Time" is
automatically 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 656
[SENSe:]SWEep:TIME on page 656
[SENSe:]SWEep:DURation? on page 654
Span/RBW
Sets the coupling ratio if RBW is set to auto mode.
For more information see Chapter 7.6.1.4, "Coupling Span and RBW", on page 392.
"Auto[100]"
"Resolution Bandwidth" = "Span/100"
This coupling ratio is the default setting of the R&S FPL1000.
"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[:RESolution]:RATio on page 651
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 7.6.1.3, "Coupling VBW and RBW", on page 392.
"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.
Bandwidth, Filter and Sweep Configuration