Configuring the Signal in the RF Domain
R&S
®
SMW200A
437User Manual 1175.6632.02 ─ 16
"Uninterrupted Level Settings"
Suppresses blanking at level transitions. Frequency transitions can
lead to an RF level blanking due to hardware specific switching
points.
This mode reduces the dynamic range of the instrument. The step
attenuator is fixed.
Note:
Do not use the mode "I/Q Modulator > Optimization Mode > High
Quality" in combination with the modes "RF Level > Setting Charac-
teristics > Uninterrupted Level Settings/Strictly Monotone".
The high quality I/Q optimization leads to RF signal interruption. The
requirements of the RF level modes "Uninterrupted Level Settings"
and "Strictly Monotone" can not be fulfilled.
"Strictly Monotone"
Executes signal level changes monotonically increasing or decreas-
ing.
The setting makes sure that increasing the level value exclusively
results in an increased output level, and vice versa.
All electronic switches, which might affect the monotonicity are fixed.
The operation mode is useful for applications using level searching
algorithms which rely on a strictly monotonous behavior.
"Constant-VSWR"
Suppresses output impedance variations at the RF A/RF B output
connector, due to changed level settings.
"Continuous-Phase"
Suppresses phase discontinuities.
This mode reduces the dynamic range of the instrument and the step
attenuator is fixed (equates to "Strictly Monotone").
"User"
Indicates that a setting has been modified in the expert mode. The
expert mode is a protected function, that requires protection level 2
password.
Remote command:
[:SOURce<hw>]:POWer:LBEHaviour on page 1097
Attenuator Level Range
Shows the interruption-free range of the level that you can use in the currently selected
mode.
Remote command:
:OUTPut<hw>:AFIXed:RANGe:LOWer? on page 811
:OUTPut<hw>:AFIXed:RANGe:UPPer? on page 811
Readjust
Recalculates and adjusts the internal switch positions of the RF chain according to the
current level.
In the "Sample & Hold" and "Sample & On" modes, the function also triggers a new
sample process. During the recalculation, the output level is blanked briefly.
Configuring RF Frequency and Level
To Next Page
Loading...
