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Common: SPECtrum:SWITching CMU-K20/21/22/23/24
1115.6088.12 6.118
E-12
Subsystem SPECtrum:SWITching
The subsystem
SPECtrum:SWITching
measures and returns the frequency spectum (due to switching)
and compares it with tolerance values. The subsystem corresponds to the graphical measurement
menu
Spectrum.
READ[:SCALar]:SPECtrum:SWITching[:GMSK]?
Scalar
Results
READ[:SCALar]:SPECtrum:SWITching:EPSK?
Start single shot measurement and return results
FETCh[:SCALar]:SPECtrum:SWITching[:GMSK]?
FETCh[:SCALar]:SPECtrum:SWITching:EPSK?
Read measurement results (unsynchronized)
SAMPle[:SCALar]:SPECtrum:SWITching[:GMSK]?
SAMPle[:SCALar]:SPECtrum:SWITching:EPSK?
Read measurement results (synchronized)
Returned values
Value range
Def. value
Def. unit
FW vers.
Reference Power,
Matching
–100.0 dBm to +100.0 dBm
INV | MATC | NMAT | OUT | NTR | NRAM | OFLW |
UFLW | NTSC | OFF
NAN
INV
dBm
–
V1.20
Description of command
These commands are always queries. They start a measurement and return the results. For more details refer to
the description of measurement control in chapter 5 of the CMU200 operating manual.
The reference power is the absolute carrier power measured as specified in the GSM standard. The following
messages may be output for the value
Matching
:
INV
invalid
MATC
matching
NMAT
not matching
OUT
out of range
NTR
no trigger
NRAM
not ramping (burst not found)
OFLW
overflow
UFLW
underflow
NTSC
no training sequence code
OFF
off
READ:ARRay:SPECtrum:SWITching[:GMSK]?
Spectrum Results
READ:ARRay:SPECtrum:SWITching:EPSK?
Start single shot measurement and return results
FETCh:ARRay:SPECtrum:SWITching[:GMSK]?
FETCh:ARRay:SPECtrum:SWITching:EPSK?
Read measurement results (unsynchronized)
SAMPle:ARRay:SPECtrum:SWITching[:GMSK]?
SAMPle:ARRay:SPECtrum:SWITching:EPSK?
Read results (synchronized)
Returned values
Description of parameters
Def. value
Def. unit
FW vers.
–100.0 dBm to + 100.0 dBm,
...,
–100.0 dBm to + 100.0 dBm
Power at measurement point 1
...
Power at measurement point
n
NAN
...
NAN
dBm
...
dBm
V1.20
Description of command
These commands are always queries. They return the off-carrier power due to switching at all measurement
points.
深圳德标仪器
135-1095-0799
Содержание CMU-K20
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