RF Measurements CMU
1100.4903.12 6.54 E-10
Subsystem SPECtrum:LEVel (Level)
The subsystem POWer:LEVel sets the level range of the Spectrum measurement. The subsystem cor-
responds to the Level Scale hotkey in the graphical measurement menu Spectrum.
[SENSe:]SPECtrum:LEVel:RANGe <Range> Range
<Range>
Parameter description Def. value Default unit FW vers.
10.0 dB to 100.0 dB Level range for the spectrum measurement. 100.0 dB – V1.15
Command description
This command defines the level range for the spectrum measurement.
Subsystem SUBarrays:SPECtrum
The subsystem SUBarrays:SPECtrum defines the measurement range and the type of output values.
CONFigure:SUBarrays:SPECtrum Definition of Subarrays
<Mode>,<Start>,<Samples>{,<Start>,<Samples>}
<Mode>
Description of parameters Def. value Def. unit
ALL |
ARIThmetical |
MINimum |
MAXimum |
IVAL,
Return all measurement values
Return arithm. mean value in every subrange
Return minimum value in every subrange
Return maximum value in every subrange
Return single interpolated value at <Start>
ALL –
<Start>
Description of parameters Def. value Def. unit
10 MHz to
2.69999999 GHz,
Start frequency in current range Min Hz
<Samples>
Description of parameters Def. value Def. unit FW vers.
1 to 560 Number of samples in current subrange Max – 3.0
Description of command
This command configures the READ:SUBarrays:SPECtrum..., FETCh:SUBarrays:SPECtrum..., and
SAMPle:SUBarrays:SPECtrum 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 frequency and the number of test points to be meas-
ured.
For <Mode> = IVAL, the <Samples> parameter is ignored and the CMU returns a single measurement value cor-
responding to the abscissa value <Start>. If <Start> is located between 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 measurement defined by the
commands [SENSe:]SPECtrum:FREQuency:CENTer and [SENSe:]SPECtrum: FREQuency:SPAN or by
[SENSe:]SPECtrum:FREQuency:STARt and [SENSe:]SPECtrum: FREQuency:STOP. 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.
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