Common Measurement Settings
R&S
®
FSVA3000/ R&S
®
FSV3000
387
User Manual 1178.8520.02 ─ 01
Table 8-2: Optimization parameters in FFT mode
Optimization mode
Description
Dynamic
Optimizes the dynamic range by using the narrowest possible partial span (depend-
ing on the RBW).
Speed
Optimizes the sweep rate by using the widest possible partial span (depending on
the RBW).
It is recommended that you set the
to "Auto" to optimize the sweep
rate.
Auto
Uses a medium-sized partial span to obtain a compromise between a large dynamic
range and a fast sweep rate.
Remote command:
Sweep Type
Defines the sweep type.
"Auto"
Automatically sets the fastest available sweep type for the current
measurement (Frequency or FFT). Auto mode is set by default.
"FFT"
The FFT sweep samples on a defined frequency value and trans-
forms it to the spectrum by fast Fourier transformation (FFT) (see
also
Chapter 8.5.1.5, "How Data is Measured: the Sweep Type"
on page 379).
FFT is not available in the following cases:
●
when using 5-Pole filters or RRC filters
In these cases, frequency sweep is used.
Remote command:
Single Sweep / Run Single
After triggering, starts the number of sweeps set in "Sweep Count". The measurement
stops after the defined number of sweeps has been performed.
While the measurement is running, the "Single Sweep" softkey and the [RUN SINGLE]
key are highlighted. The running measurement can be aborted by selecting the high-
lighted softkey or key again.
Note:
Sequencer. If the Sequencer is active, the "Single Sweep" softkey only controls
the sweep mode for the currently selected channel. However, the sweep mode only
takes effect the next time the Sequencer activates that channel, and only for a chan-
nel-defined sequence. In this case, the Sequencer sweeps a channel in single sweep
mode only once.
Furthermore, the [RUN SINGLE] key controls the Sequencer, not individual sweeps.
[RUN SINGLE] starts the Sequencer in single mode.
If the Sequencer is off, only the evaluation for the currently displayed channel is upda-
ted.
For details on the Sequencer, see
Chapter 6.4.1, "The Sequencer Concept"
Bandwidth, Filter and Sweep Configuration