Rohde & Schwarz FSWP Series - Window Length; Capture Offset

Configuration
R&S
®
FSWP
63User Manual 1177.5856.02 ─ 07
Window Length ← Advanced FFT mode / Basic Settings
Defines the number of samples to be included in a single FFT window in averaging
mode. (In single mode, the window length corresponds to the " Record Length "
on page 60.)
Values from 3 to 4096 are available in "Manual" mode; in "Advanced" FFT mode, val-
ues from 3 to 524288 are available.
However, the window length may not be longer than the FFT Length .
Remote command:
[SENSe:]IQ:FFT:WINDow:LENGth on page 131
Capture Offset
This setting is only available for slave applications in MSRA operating mode. It has a
similar effect as the trigger offset in other measurements: it defines the time offset
between the capture buffer start and the start of the extracted slave application data.
In MSRA mode, the offset must be a positive value, as the capture buffer starts at the
trigger time = 0.
For details on the MSRA operating mode, see the R&S FSWP MSRA User Manual.
Remote command:
[SENSe:]MSRA:CAPTure:OFFSet on page 132
5.7.2 Sweep Settings
Access: "Overview" > "Bandwidth" > "Sweep" tab
For more information on the spectrogram settings that become available when you turn
on a spectrogram, refer to the R&S FSWP user manual.
The remote commands required to configure the sweep are described in Chap-
ter 8.6.11, "Configuring Data Acquisition", on page 128.
Sweep Points................................................................................................................ 63
Sweep/Average Count ................................................................................................. 64
Continuous Sweep / Run Cont .....................................................................................64
Single Sweep / Run Single ...........................................................................................65
Continue Single Sweep ................................................................................................65
Sweep Points
In the I/Q Analyzer application, a specific frequency bandwidth is swept for a specified
measurement time. During this time, a defined number of samples (= "Record
Length" ) are captured. These samples are then evaluated by the applications. There-
fore, in this case the number of sweep points does not define the amount of data to be
acquired, but rather the number of trace points that are evaluated and displayed in the
result diagrams.
Data Acquisition and Bandwidth Settings