Common Measurement Settings
R&S
®
FSW
427User Manual 1173.9411.02 ─ 19
Preview
The preview diagram displays a zero span measurement at the center frequency with
the defined RBW and sweep time.
For details see chapter 6.6.1.3, "Determining the Parameters in Preview Mode",
on page 425.
Note: The zero span settings refer only to the preview diagram. The main diagram
remains unchanged.
The trigger and gate settings are applied to the measurement when the dialog box is
closed or "Update Main Diagram" is selected.
If preview mode is switched off, any changes to the settings in this dialog box are
applied to the measurement diagram directly. In this case, the zero span settings for
the preview diagram are not displayed.
For information on the zero span settings see:
●
"Center frequency" on page 388
●
"RBW" on page 303
●
"Sweep Time" on page 411
Frequency ← Preview
Defines the center frequency.
Remote command:
[SENSe:]FREQuency:CENTer on page 831
RBW ← Preview
Defines the bandwidth value. The available resolution bandwidths are specified in the
data sheet. Numeric input is always rounded to the nearest possible bandwidth.
Remote command:
[SENSe:]BANDwidth|BWIDth[:RESolution] on page 836
Sweep Time ← Preview
Defines the sweep time. Allowed values depend on the ratio of span to RBW and RBW
to VBW. For details refer to the data sheet. Numeric input is always rounded to the
nearest possible sweep time.
Remote command:
[SENSe:]SWEep:TIME on page 842
Trigger Settings
The trigger settings define the beginning of a measurement.
Trigger Source ← Trigger Settings
Defines the trigger source. If a trigger source other than "Free Run" is set, "TRG" is
displayed in the channel bar and the trigger source is indicated.
For gated measurements, this setting also defines the gating source.
For more information see "Trigger Source" on page 419.
Note: When triggering or gating is activated, the squelch function is automatically disa-
bled.
Trigger and Gate Configuration
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