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1xEV-DO Measurements
R&S
®
CMW-KM8xx/-KS8xx
288
User Manual 1173.9511.02 ─ 12
// *************************************************************************
// Redefine the frequency entering band class and channel number.
// *************************************************************************
CONFigure:EVDO:MEAS:RFSettings:BCLass KCEL
CONFigure:EVDO:MEAS:RFSettings:CHANnel 12
3.4.1.2
Configuring the Trigger System
// *************************************************************************
// Query trigger catalog.
// Use fast synchronization to the RF input signal,
// a trigger timeout of 1 s, trigger level, slope, delay
// evaluation offset and minimum trigger gap.
// *************************************************************************
TRIGger:EVDO:MEAS:MEValuation:CATalog:SOURce?
TRIGger:EVDO:MEAS:SOURce 'Free Run'
TRIGger:EVDO:MEAS:MEValuation:TOUT 1000
TRIGger:EVDO:MEAS:MEValuation:THReshold -30
TRIGger:EVDO:MEAS:MEValuation:SLOPe FEDGe
TRIGger:EVDO:MEAS:MEValuation:DELay 0.001
TRIGger:EVDO:MEAS:MEValuation:EOFFset 16
TRIGger:EVDO:MEAS:MEValuation:MGAP 0.00002
3.4.1.3
Multi Evaluation: Specifying Measurement-Specific Settings
The 1xEV-DO multi evaluation measurement is programmed as follows:
●
The measurement is controlled by SCPI commands with the following syn-
tax:
...EVDO:MEAS:MEValuation...
●
Use general commands of the type
...:EVDO:MEAS...
(no
:MEValuation
/
no
:OLTR
mnemonic) to define the signal routing and perform RF and analyzer
settings.
●
After a
*RST
, the measurement is switched off. Use
READ:EVDO:MEAS:MEValuation...?
to initiate a single-shot measurement and
retrieve the results. You can also start the measurement using
INIT:EVDO:MEAS:MEValuation
and retrieve the results using
FETCh:EVDO:MEAS:MEValuation...?
.
●
For synchronization and proper decoding, some AT signal settings must be in
accordance with the measured signal.
// *************************************************************************
// Specify long code masks for I and Q branch and physical layer subtype.
// Query the spreading factor. Set reference power mode to pilot power.
// *************************************************************************
CONFigure:EVDO:MEAS:MEValuation:ILCMask #H10AF8CA9304
CONFigure:EVDO:MEAS:MEValuation:QLCMask #H101F8CA9104
CONFigure:EVDO:MEAS:MEValuation:PLSubtype ST2
CONFigure:EVDO:MEAS:MEValuation:SFACtor?
CONFigure:EVDO:MEAS:MEValuation:RPMode PPOW
Programming
深圳德标仪器
135-1095-0799