R&S FSW Series, Руководство пользователя

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Getting Started
R&S
®
FSW
85 User Manual 1173.9411.02 ─ 43
Channel-specific settings
Beneath the channel name, information on channel-specific settings for the measure-
ment is displayed in the
channel bar . Channel information varies depending on the
active application.
In the Spectrum application, the R&S FSW shows the following settings:
Table 5-4: Channel settings displayed in the channel bar in the Spectrum application
Ref Level Reference level
m.+el.Att Mechanical and electronic RF attenuation that has been set.
Ref Offset Reference level offset
SWT Sweep time that has been set.
If the sweep time does not correspond to the value for automatic coupling,
a bullet is displayed in front of the field. The color of the bullet turns red if
the sweep time is set below the value for automatic coupling. In addition,
the UNCAL flag is shown. In this case, the sweep time must be increased.
For FFT sweeps, an estimated duration for data capture and processing is
indicated behind the sweep time in the channel bar.
Meas Time / AQT Measurement (acquisition) time, calculated from analysis bandwidth and
number of samples (for statistics measurements)
RBW Resolution bandwidth that has been set.
If the bandwidth does not correspond to the value for automatic coupling,
a green bullet appears in front of the field.
VBW Video bandwidth that has been set.
If the bandwidth does not correspond to the value for automatic coupling,
a green bullet is displayed in front of the field.
AnBW Analysis bandwidth (for statistics measurements)
Compatible Compatible device mode (FSP, FSU, default; default not displayed)
Mode Indicates which sweep mode type is selected:
●
"Auto FFT": automatically selected FFT sweep mode
●
"Auto sweep": automatically selected swept sweep mode
●
"Sweep": manually selected frequency sweep mode
●
"FFT": manually selected FFT sweep mode
Icons for individual settings
A bullet next to the setting indicates that user-defined settings are used, not automatic
settings. A green bullet indicates this setting is valid and the measurement is correct. A
red bullet indicates an invalid setting that does not provide useful results.
Common settings
The channel bar above the diagram not only displays the channel-specific settings. It
also displays information on instrument settings that affect the measurement results
even though it is not immediately apparent from the display of the measured values.
This information is displayed in gray font and only when applicable for the current mea-
surement, as opposed to the channel-specific settings that are always displayed.
Operating the Instrument