CDMA2000 Measurements
R&S
®
CMW-KG8xx/-KM8xx/-KS8xx
769
User Manual 1173.9511.02 ─ 11
5.4.1.6
Multi Evaluation: Single-Shot and Continuous Measurements
// *************************************************************************
// Start single-shot measurement
// Return current magnitude error trace, maximum magnitude error trace
// and maximum phase error trace (without repeating the measurement).
// Query the measurement state (should be "RDY").
// *************************************************************************
INIT:CDMA:MEAS:MEValuation
FETCh:CDMA:MEAS:MEValuation:TRACe:MERRor:CURRent?
FETCh:CDMA:MEAS:MEValuation:TRACe:MERRor:MAXimum?
FETCh:CDMA:MEAS:MEValuation:TRACe:PERRor:MAXimum?
FETCh:CDMA:MEAS:MEValuation:STATe?
// *************************************************************************
// Start continuous measurement; wait for 5 ms and return average result.
// Query measurement state and substates (should be "RUN,ADJ,ACT").
// *************************************************************************
CONFigure:CDMA:MEAS:MEValuation:REPetition CONTinuous
INIT:CDMA:MEAS:MEValuation
Pause 5000
FETCh:CDMA:MEAS:MEValuation:TRACe:EVMagnitude:AVERage?
FETCh:CDMA:MEAS:MEValuation:STATe:ALL?
5.4.1.7
OLTR: Specifying Measurement-Specific Settings
The CDMA2000 TX measurement is programmed as follows:
●
The measurement is controlled by SCPI commands with the following syn-
tax:
...CDMA:MEAS:OLTR...
●
Use general commands of the type
...:CDMA:MEAS...
to define the signal rout-
ing and perform RF and analyzer settings.
●
Trigger setting commands are the same as by the multi evaluation measurement,
see
Configuring the Trigger System
●
After a
*RST
, the measurement is switched off. Use
READ:CDMA:MEAS:OLTR...?
to initiate a single-shot measurement and retrieve
the results. You can also start the measurement using
INIT:CDMA:MEAS:OLTR
and retrieve the results using
FETCh:CDMA:MEAS:OLTR...?
/
FETCh:CDMA:MEAS:RPINterval...?
.
// *************************************************************************
// Define measurement timeout, no. of sequences for
// single-shot measurement, power step 30 dB, direction up,
// reference power interval 20 ms, guard interval 50 ms,
// measure on exception and initial lower OLTR limit.
// *************************************************************************
CONFigure:CDMA:MEAS:OLTR:TOUT 5
CONFigure:CDMA:MEAS:OLTR:SEQuence 5
CONFigure:CDMA:MEAS:OLTR:PSTep 30
Programming
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