User manual

Mathematics
R&S
®
RTO
200User Manual 1316.0827.02 ─ 06
Frequency span
The span is specified in Hertz and defines the width of the displayed frequency range,
which is (Center - Span/2) to (Center + Span/2). The position of the span is defined using
the "Center frequency" setting.
SCPI command:
CALCulate:MATH<m>:FFT:SPAN on page 580
Full span
Displays the full frequency span.
SCPI command:
CALCulate:MATH<m>:FFT:FULLspan on page 580
Start frequency
Defines the start frequency of the displayed frequency span.
SCPI command:
CALCulate:MATH<m>:FFT:STARt on page 578
Stop frequency
Defines the stop frequency of the displayed frequency span.
SCPI command:
CALCulate:MATH<m>:FFT:STOP on page 578
Span/RBW Coupling
Couples the frequency span to the "Resolution BW" setting.
SCPI command:
CALCulate:MATH<m>:FFT:BANDwidth[:RESolution]:AUTO on page 581
Span/RBW Ratio
Defines the coupling ratio for Span/RBW. This setting is only available if CALCulate:
MATH<m>:FFT:BANDwidth[:RESolution]:AUTO is ON.
SCPI command:
CALCulate:MATH<m>:FFT:BANDwidth[:RESolution]:RATio on page 581
Resolution BW
Defines the resolution bandwidth. Note that the resolution bandwidth is correlated with
the span, record length and acquisition time. If a constant record length is to be used, the
RBW may be adapted if the required number of samples cannot be acquired. If span and
RBW values are coupled, changing the span will also change the RBW.
For details see chapter 6.3.1, "Fundamentals of FFT Analysis", on page 192.
SCPI command:
CALCulate:MATH<m>:FFT:BANDwidth[:RESolution][:VALue] on page 581
CALCulate:MATH<m>:FFT:BANDwidth[:RESolution]:ADJusted on page 580
FFT Analysis