Spectrum Measurements
R&S
®
ESR
363User Manual 1175.7068.02 ─ 12
Sweeptime Auto
Couples the sweep time to the span, video bandwidth (VBW) and resolution bandwidth
(RBW) (not available for zero span). If you change the span, resolution bandwidth or
video bandwidth, the sweep time is automatically adjusted.
The R&S ESR always selects the shortest sweep time that is possible without falsifying
the signal. The maximum level error is < 0.1 dB, compared to using a longer sweep
time.
When measuring Spurious Emissions, using this softkey automatically opens the
"Sweep List" dialog, see "Sweep List dialog box" on page 289.
Remote command:
[SENSe:]SWEep:TIME:AUTO on page 835
Sweep Type
Opens a submenu to define the sweep type.
Selecting the sweep type is not available for the I/Q analyzer.
In frequency sweep mode, the analyzer provides several possible methods of sweep-
ing:
●
"Sweep" on page 359
●
"FFT" on page 359 (not available with 5-Pole filters, channel filters or RRC filters,
see Chapter 6.2.6.3, "Selecting the Appropriate Filter Type", on page 366)
●
"Auto" on page 359
Sweep ← Sweep Type
Sets the Sweep Type to standard analog frequency sweep.
In the standard sweep mode, the local oscillator is set to provide the spectrum quasi
analog from the start to the stop frequency.
Remote command:
SWE:TYPE SWE, see [SENSe:]SWEep:TYPE on page 835
FFT ← Sweep Type
Sets the Sweep Type to FFT mode.
The FFT sweep mode samples on a defined frequency value and transforms it to the
spectrum by fast Fourier transformation (FFT).
FFT is not available when using 5-Pole filters, Channel filters or RRC filters. In this
case, sweep mode is used.
Remote command:
SWE:TYPE FFT, see [SENSe:]SWEep:TYPE on page 835
Auto ← Sweep Type
Automatically sets the fastest available Sweep Type for the current measurement. Auto
mode is set by default.
Remote command:
SWE:TYPE AUTO, see [SENSe:]SWEep:TYPE on page 835
Configuration
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