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R&S
FS-K30
Measurements & Settings
Measurement
Settings
Software Manual 1300.6637.42 - 03
60
2.5.2 Calibration
Calibration of the R&S FS-K30 application measures the noise introduced to a signal
by the spectrum analyzer itself.
This can then be compensated for in measurements on a Device Under Test. This
compensation is called 2nd Stage Correction, because the spectrum analyzer is the
second stage of the test set-up, the DUT being the first stage.
The calibration process is described in detail in Section “Calibration”.
2.5.2.1 2nd Stage Correction
The
2nd Stage Correction
setting is ON when calibration data is used to correct the
measurement results for noise introduced by the spectrum analyser (the 2
nd
stage).
When set to OFF, then no corrections are made to the measurement results.
When the
2nd Stage Correction
is switched off it is not possible to calibrate the option
(the
CAL
hotkey is disabled).
The
2nd Stage Correction
setting can be turned OFF and ON without losing calibration
data.
2.5.3 Analyzer Settings
The Analyzer settings are the general settings for the spectrum analyser concerning
the level, attenuation and bandwidth of the signal to be measured.
2.5.3.1 RBW
RBW
is the Resolution Bandwidth that the spectrum analyzer will use for the
measurement. This is the bandwidth of the bandpass filter that controls the size of the
frequency ‘window’ that R&S FS-K30 will ‘see.’
A large value for
RBW
will considerably improve the averaging of the display and
reduces the influence of external sources of interference, as well as giving the fastest
possible measurement time.
A low
RBW
should only be used across a very small frequency range. For measurements