Rohde & Schwarz CMU-K20, Operating Manual

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CMU-K20/K21/K22/K23/K24 Non Signalling: Spectrum Measurements
1115.6088.12 4.61 E-11
Measurement Configurations (Spectrum)
The popup menu Spectrum Configuration contains three tabs to define the parameters of the spectrum
measurement including the error tolerances.
The popup menu Spectrum Configuration
is called up by pressing the measurement control softkey in
the top right of the graphical measurement menu Spectrum twice (this softkey reads due to Modulation
or due to Switching , depending on the selected application). By pressing the associated hotkeys, it is
possible to change between the tabs.
Measurement Control (Spectrum Configuration – Control)
The Control tab controls the spectrum measurement by defining
•
The Repetition mode
•
The Stop Condition for the measurement
•
The measurement curve displayed (Display Mode )
•
The number of bursts/evaluation periods forming a statistics cycle (Statistic Count) ,
•
The averaging rule to obtain the reference power (Ref. Power Mode , for 8PSK measurements only)
Besides, it influences the measurement diagram by adding or removing the Grid .
Fig. 4-27 Spectrum Configuration – Control
All settings can be defined separately for the two applications
due to Modulation and due to Switching
and for the two modulation schemes GMSK and 8MSK . They are analogous to those of the menu
Control in the menu group Power (see page 4.28 ). In the remote-control commands, the keyword
POWer
is to be replaced by
SPECtrum:MODulation
or
SPECtrum:SWITching
.
The following parameters are specific to the Spectrum due to Switching measurement and provided for
both GSMK and 8PSK modulation:
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