1xEV-DO Measurements
R&S
®
CMW-KG8xx/-KM8xx/-KS8xx
302
User Manual 1173.9511.02 ─ 11
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
// *************************************************************************
// Select the wideband filter for AT power measurements.
// *************************************************************************
CONFigure:EVDO:MEAS:MEValuation:CARRier:SETTing 0
CONFigure:EVDO:MEAS:MEValuation:CARRier:WBFilter F16M0
// *************************************************************************
// Define a multi-carrier configuration: enable carrier 1 with a frequency
// offset of 2 MHz and query the resulting carrier frequency.
// *************************************************************************
CONFigure:EVDO:MEAS:MEValuation:CARRier:SETTing 1
CONFigure:EVDO:MEAS:MEValuation:CARRier:ENABle ON
CONFigure:EVDO:MEAS:MEValuation:CARRier:FOFFset 2000000
CONFigure:EVDO:MEAS:MEValuation:CARRier:FREQuency?
// *************************************************************************
// Define that only the first half-slot shall be measured. Settings
// per carrier: Analyze signal only when DRC, DSC, data or auxiliary
// pilot channels are present, for subtype 0/1 do not analyze signal
// if ACK channel is present, set data modulation type to BPSK.
// *************************************************************************
CONFigure:EVDO:MEAS:MEValuation:HSLot FHSLot
CONFigure:EVDO:MEAS:MEValuation:CARRier:SELect 0
Programming
深圳德标仪器
135-1095-0799