Rohde & Schwarz FSW Series - Page 127

Configuration
R&S
®
FSW-K7
127User Manual 1173.9240.02 ─ 17
Setting the Reference Level Automatically (Auto Level)
Automatically determines the optimal reference level for the current input data. At the
same time, the internal attenuators and the preamplifier (for analog baseband input:
the full scale level) are adjusted so the signal-to-noise ratio is optimized, while signal
compression, clipping and overload conditions are minimized.
In order to do so, a level measurement is performed to determine the optimal reference
level.
This function is only available for the MSRA/MSRT Master, not for the applications.
You can change the measurement time for the level measurement if necessary (see
"Changing the Automatic Measurement Time (Meastime Manual)" on page 127).
Remote command:
[SENSe:]ADJust:LEVel on page 269
Resetting the Automatic Measurement Time (Meastime Auto)
Resets the measurement duration for automatic settings to the default value.
This function is only available for the MSRA/MSRT Master, not for the applications.
Remote command:
[SENSe:]ADJust:CONFigure:DURation:MODE on page 268
Changing the Automatic Measurement Time (Meastime Manual)
This function allows you to change the measurement duration for automatic setting
adjustments. Enter the value in seconds.
This function is only available for the MSRA/MSRT Master, not for the applications.
Remote command:
[SENSe:]ADJust:CONFigure:DURation:MODE on page 268
[SENSe:]ADJust:CONFigure:DURation on page 267
Upper Level Hysteresis
When the reference level is adjusted automatically using the Auto Level function, the
internal attenuators and the preamplifier are also adjusted. In order to avoid frequent
adaptation due to small changes in the input signal, you can define a hysteresis. This
setting defines an upper threshold the signal must exceed (compared to the last mea-
surement) before the reference level is adapted automatically.
This function is only available for the MSRA/MSRT Master, not for the applications.
Remote command:
[SENSe:]ADJust:CONFigure:HYSTeresis:UPPer on page 269
Lower Level Hysteresis
When the reference level is adjusted automatically using the Auto Level function, the
internal attenuators and the preamplifier are also adjusted. In order to avoid frequent
adaptation due to small changes in the input signal, you can define a hysteresis. This
setting defines a lower threshold the signal must fall below (compared to the last mea-
surement) before the reference level is adapted automatically.
This function is only available for the MSRA/MSRT Master, not for the applications.
Remote command:
[SENSe:]ADJust:CONFigure:HYSTeresis:LOWer on page 268
Automatic Settings