Rohde & Schwarz FSV3000, User Manual

Page: 472 / 1489

Common measurement settings
R&S
®
FSVA3000/ R&S
®
FSV3000
472 User Manual 1178.8520.02 ─ 08
RBW
Defines the resolution bandwidth. The available resolution bandwidths are specified in
the data sheet. Numeric input is always rounded to the nearest possible bandwidth.
If "Auto" is selected, the resolution bandwidth is coupled to the selected span (for span
> 0). If the span is changed, the resolution bandwidth is automatically adjusted.
If the resolution bandwidth is defined manually, a green bullet is displayed next to the
"RBW" display in the channel bar.
For more information see Chapter 6.5.1.1, "Separating signals by selecting an appro-
priate resolution bandwidth" , on page 464.
Note: Restrictions.
●
For gated measurements, the maximum RBW is restricted to 3 MHz. If the current
RBW is larger when you enable gating, the RBW is automatically reduced to
3
MHz. See Chapter 6.6.2, "Gating" , on page 492.
●
For EMI measurements using the quasipeak detector, the 1 MHz RBW filter is not
available (see Chapter 5.13.3.1, "Resolution bandwidth and filter types" ,
on page 326).
Remote command:
[SENSe:]BANDwidth[:RESolution]
on page 1108
[SENSe:]BANDwidth[:RESolution]:AUTO
on page 1108
VBW
Defines the video bandwidth automatically or manually.
For more information see Chapter 6.5.1.2, "Smoothing the trace using the video band-
width" , on page 465.
"Auto" The video bandwidth is coupled to the resolution bandwidth. If the
resolution bandwidth is changed, the video bandwidth is automatically
adjusted.
"Manual" For manual mode, define the bandwidth value. The available video
bandwidths are specified in the data sheet. Numeric input is always
rounded to the nearest possible bandwidth.
If the video bandwidth is defined manually, a green bullet is displayed
next to the "VBW" display in the channel bar.
Remote command:
[SENSe:]BANDwidth:VIDeo:AUTO
on page 1110
[SENSe:]BANDwidth:VIDeo
on page 1110
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 6.5.1.7, "How long the data is measured: Sweep
Time " , on page 468.
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).
Bandwidth, filter and sweep configuration