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R&S
FS-K30
Measurements & Settings
Measurement
results
Software Manual 1300.6637.42 - 03
51
The bottom section of the table displays either a list or a graph of the complete set of
points defined in the frequency list for the measurement.
A graphical view will include either one or two traces. The Noise trace will be the same
colour as Trace 1 in the spectrum analyzer (yellow by default) and the Gain trace will
be the same colour as Trace 2 in the spectrum analyzer (blue by default).
A list view consists of a table listing detailed results for each frequency at which a
measurement was performed as follows:
I
RF: Receive Frequency at the DUT at which the values in this row of the table
were measured (Hz)
I
LO: Local Oscillator frequency (Hz) – not displayed for Direct measurements
I
IF: Intermediate Frequency (Hz) – not displayed for Direct measurements
I
NF: Noise Figure measured (dB)
I
Noise Temp: Noise Temperature (K) derived from measured Noise Figure
I
Gain: Gain measured (dB)
By selecting a row within the list, the other settings for each measurement point may
also be viewed in the Current Value section of the display (see above). Selecting a row
within the list also sets the frequency at which any fixed frequency measurement will
be performed (by pressing the
FIX FREQ
hotkey).
2.3.2 Single Frequency measurement
Single Frequency measurements give access to the functionalities of Frequency List
measurements for quick measurements at one particular frequency: only one
frequency has to be set before running the measurement and the measurement is
performed at this frequency only. As with Frequency List measurements measurement
at this frequency can be done once (Single measurements) or continuously
(Continuous measurements).
Single Frequency measurements are run:
I
by checking the Single Freq checkbox in the Frequency Settings dialog and then
choosing the type of execution by pressing the Run Single or Run Cont Hotkey
I
by using the CONFigure:FREQuency:SINGle or
CONFigure:FREQuency:CONTinuous SCPI command and then INITiate
The frequency the measurement is done at can be set in the Start Frequency field in
the Frequency Settings dialog.
The result is displayed in the Result List, limiting the list to one element.
However in this mode the graphical display is disabled and remains blank.
2.3.3 Fixed Frequency measurements
A Fixed Frequency measurement runs continuously at the selected frequency. The
results are continuously updated in the Current Value section of the display. This
always displays the settings and results for the current measurement.