Rohde & Schwarz CMU-K20, Operating Manual

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CMU-K20/21/22/23/24 Common: SPECtrum:SWITching
1115.6088.12 6.117 E-12
Subsystem SUBarrays:SPECtrum:SWITching
The subsystem SUBarrays:SPECtrum:SWITching defines the measurement range and the type of out-
put values.
CONFigure:SUBarrays:SPECtrum:SWITching[:GMSK]
CONFigure:SUBarrays:SPECtrum:SWITching:EPSK
<Mode>,<Start>,<Samples>{,<Start>,<Samples>}
Definition of Subarrays
<Mode> Description of parameters Def. value Def. unit
ALL |
ARIThmetical |
MINimum |
MAXimum |
IVAL, Return all measurement values
Return arithm. mean value in every range
Return minimum value in every range
Return maximum value in every range
Return single interpolated value at <Start> ALL –
<Start> Description of parameters Def. value Def. unit
–1.8 MHz to 1.8 MHz, Start frequency in current range –1.8 MHz
<Samples> Description of parameters Def. value Def. unit FW vers.
1 to 9 Number of samples in current range 9 – V2.00
Description of command
This command configures the
READ:SUBarrays.., FETCh:SUBarrays..,
and
SAM-
Ple:SUBarrays:SPECtrum:SWITching
commands. It restricts the measurement to up to 32 subranges
where either all measurement results (the number of which is given by the second numerical parameter) or a
single statistical value is returned. The subranges are defined by the start time and the number of test points
which are located at fixed frequencies (see command
CONFig-
ure:SPECtrum:SWITching:LIMit:LINE<nr>
). If <Start> does not coincide with a test point then the range
will start at the next test point that is larger than <Start>.
For <Mode> = IVAL, the <Samples> parameter is ignored and the CMU returns a single measurement value
corresponding to the abscissa value <Start>. If <Start> is located beween two test points with valid results then
the result is calculated from the results at these two adjacent test points by linear interpolation.
The subranges may overlap but must be within the total range of the spectrum due to switching measurement.
Test points outside this range are not measured (result NAN) and do not enter into the ARIThmetical, MINimum
and MAXimum values. By default, only one range corresponding to the total measurement range is used and all
measurement values are returned.
Measured Values
The commands of the following subsystems determine and return the results of the spectrum due to
switching measurement. They correspond to the graphical menu
Spectrum with its various display ele-
ments.
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