R&S FSW Series, Руководство пользователя

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Common Measurement Settings
R&S
®
FSW
481 User Manual 1173.9411.02 ─ 43
└ Power Sensor ............................................................................................... 484
└ Time .............................................................................................................. 484
Trigger Level ............................................................................................................... 484
Repetition Interval ....................................................................................................... 485
Drop-Out Time .............................................................................................................485
Trigger Offset .............................................................................................................. 485
Hysteresis ................................................................................................................... 485
Trigger Holdoff .............................................................................................................486
Slope ........................................................................................................................... 486
Preview
The preview mode allows you to try out trigger and gate settings before actually apply-
ing them to the current measurement.
The preview diagram displays a zero span measurement at the center frequency with
the defined RBW and sweep time. This is useful to analyze bursts, for example, to
determine the required gate settings.
The trigger and gate settings are applied to the measurement when the dialog box is
closed.
Note: The zero span settings refer only to the preview diagram. The main diagram
remains unchanged.
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 444
●
"RBW" on page 347
●
"Sweep Time" on page 468
Frequency ← Preview
Defines the center frequency.
Remote command:
[SENSe:]FREQuency:CENTer
on page 1025
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[:RESolution]
on page 1031
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<n>:]SWEep:TIME
on page 1037
Trigger and Gate Configuration