Spectrum Measurements
R&S
®
ESR
363
User 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
Remote command:
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:
●
●
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"
●
Sweep ← 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
FFT ← Sweep Type
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
Auto ← Sweep Type
Automatically sets the fastest available
for the current measurement. Auto
mode is set by default.
Remote command:
SWE:TYPE AUTO
, see
Configuration
