Rohde & Schwarz CMU-K20, Operating Manual

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Signalling: POWer:MPR CMU-K20/21/22/23/24
1115.6088.12 6.148 E-12
Test Configuration
The commands of the following subsystems configure the combined power and modulation
measurement. Note that configurations such as limit lines must be defined separately in the
POWer
and MODulation systems.
Subsystem SUBarrays:POWer:MPR
The subsystem SUBarrays:POWer:MPR defines the measurement range and the type of output values.
CONFigure:SUBarrays:POWer[:NORMal][:GMSK]:MPR 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 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
–10 bit to 156 ¾ bit, Start time in current range –10 bit
<Samples>
Description of parameters Def. value Def. unit FW vers.
1 to 668 Number of samples in current range 668 – V2.00
Description of command
This command configures the
READ:SUBarrays..., FETCh:SUBarrays...,,
and
SAMPle:SUBarrays:POWer:MPR
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 on
a fixed, equidistant grid with a step width of ¼ bit. 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 Power 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.
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