Rohde & Schwarz FSWP26 - Swap I;Q; RBW

Configuration
R&S
®
FSWP
61User Manual 1177.5856.02 ─ 07
Remote command:
TRACe:IQ:RLENgth on page 132
TRACe:IQ:SET on page 133
Swap I/Q
Activates or deactivates the inverted I/Q modulation. If the I and Q parts of the signal
from the DUT are interchanged, the R&S FSWP can do the same to compensate for it.
On I and Q signals are interchanged
Inverted sideband, Q+j*I
Off I and Q signals are not interchanged
Normal sideband, I+j*Q
Remote command:
[SENSe:]SWAPiq on page 132
RBW
Defines the resolution bandwidth for Spectrum results. The available RBW values
depend on the sample rate and record length.
(See Chapter 4.5.4, "Frequency Resolution of FFT Results - RBW", on page 32).
Depending on the selected RBW mode, the value is either determined automatically or
can be defined manually. As soon as you enter a value in the input field, the RBW
mode is changed to "Manual" .
If the "Advanced Fourier Transformation Params" option is enabled, advanced FFT
mode is selected and the RBW cannot be defined directly.
Note that the RBW is correlated with the Sample Rate and Record Length (and possi-
bly the Window Function and Window Length ). Changing any one of these parameters
may cause a change to one or more of the other parameters. For more information see
Chapter 4.5, "Basics on FFT", on page 28.
"Auto mode"
(Default) The RBW is determined automatically depending on the
Sample Rate and Record Length .
"Manual mode"
The RBW can be defined by the user.
The user-defined RBW is used and the Window Length (and possibly
Sample Rate ) are adapted accordingly.
"Advanced
FFT mode"
This mode is used if the "Advanced Fourier Transformation Params"
option is enabled.
The RBW is determined by the advanced FFT parameters.
Remote command:
[SENSe:]IQ:BWIDth:MODE on page 129
[SENSe:]IQ:BWIDth:RESolution on page 129
Advanced FFT mode / Basic Settings
Shows or hides the "Advanced Fourier Transformation" parameters in the "Data Acqui-
sition" dialog box.
These parameters are only available and required for the advanced FFT mode.
Note: The advanced settings are not supported by the Spectrum Monitor.
Data Acquisition and Bandwidth Settings