Rohde & Schwarz CMU-K20, Руководство по эксплуатации

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Common: MODulation:MERRor CMU-K20/21/22/23/24
1115.6088.12 6.100 E-12
Subsystem SUBarrays:MODulation
The subsystem SUBarrays:MODulation defines the measurement range and the type of output values.
CONFigure:SUBarrays:MODulation:MERRor: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
0 bit to 146 ¾ bit, Start time in current range 0 bit
<Samples> Description of parameters Def. value Def. unit FW vers.
1 to 588 Number of samples in current range 588 – V2.15
Description of command
This command configures the
READ:SUBarrays..., FETCh:SUBarrays...,
and
SAM-
Ple:SUBarrays:MODulation:MERRor:EPSK
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 Modulation measurement. Test points out-
side 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 – Subsystem MODulation:MERRor:EPSK
The subsystem MODulation:MERRor:EPSK measures and returns the modulation parameters and
compares them with the tolerance values. The subsystem corresponds to the various output elements
in the measurement menu
MODulation, application Magn. Error 8PSK.
深圳德标仪器
135-1095-0799