Rohde & Schwarz RTP044 - Page 416

Spectrum analysis
R&S
®
RTP
416User Manual 1337.9952.02 ─ 12
9.1.3.3 FFT gating
Access: [FFT] > "FFT setup" > "Gate" tab
FFT gating allows you to restrict FFT analysis to a certain time base of the input signal.
If no gate is used, you can define the record length as dependent on the RBW, or the
RBW as dependent on the record length (which is defined by the acquisition time).
Use Gate.....................................................................................................................416
Gate Definition............................................................................................................ 416
└ Zoom.............................................................................................................417
└ Gate description............................................................................................417
└ (Relative) Start..............................................................................................417
└ (Relative) Stop.............................................................................................. 417
Record Length/RBW Coupling....................................................................................418
Required acquisition time............................................................................................418
Use Gate
Enables FFT gating and shows the gate.
If enabled, the "Gate Definition" settings are used.
If disabled, the relation between the record length and the RBW can be defined man-
ually in the "Setup" tab instead.
When a gate is used, the RBW is adapted, if necessary. The smaller the gate, the
higher the RBW.
For details, see Chapter 9.1.1, "Fundamentals of FFT analysis", on page 402.
Gate Definition
Defines the gate settings for FFT gating.
FFT analysis