Rohde & Schwarz R&S RTM-B1, User Manual

Page: 173 / 854

Applications
R&S
®
RTM3000
173 User Manual 1335.9090.02 ─ 08
Remote command:
SPECtrum:FREQuency:STOP
on page 539
Center
Defines the frequency in the center of the displayed span. The instrument adjusts the
start and stop frequencies.
To set the center frequency, you can also use the horizontal [Position] knob if the focus
is on the frequency window.
Remote command:
SPECtrum:FREQuency:CENTer
on page 538
Span
The span is specified in Hertz and defines the width of the displayed frequency range,
which is (Center - Span/2) to ( Span/2). The instrument adjusts the start and
stop frequencies.
To set the frequency span, you can also use the horizontal [Scale] knob if the focus is
on the frequency window.
Remote command:
SPECtrum:FREQuency:SPAN
on page 538
RBW
The resolution bandwidth (RBW) determines the resolution of the spectrum, that is: the
minimum distance between two distinguishable peaks. The higher the resolution (the
smaller the ratio), the more peaks are detected, but the longer the measurement
requires to finish.
If "Automatic RBW" is selected, the RBW value is adjusted automatically and the value
is shown for information. when you set the RBW manually, the instrument adjusts the
timebase extract.
Remote command:
SPECtrum:FREQuency:BANDwidth[:RESolution][:VALue]
on page 539
SPECtrum:FREQuency:BANDwidth[:RESolution]:RATio
on page 539
W
Shows the width of the timebase extract (gate) for which FFT is calculated.
Remote command:
SPECtrum:TIME:RANGe
on page 540
P
Shows the position of timebase extract (gate) to restrict the timebase of the input signal
for which FFT analysis is performed.
Remote command:
SPECtrum:TIME:POSition
on page 539
FFT Analysis
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