Programming a Waveform Quality/Code Domain Measurement

Last updated: May 24, 2006

The following example is based on an RTAP data connection for subtype 0 physical layer test. The general procedure is also applicable to the subtype 2 physical layer test based on an RETAP data connection. Note that more measurement results are available for new reverse channels of Release A subtype 2 physical layer. See Control Program Examples for the comprehensive test programs.

General Procedure

Prompt the user to connect the access terminal to the test set's front panel RF IN/OUT connector and power it on. Instruct the user that if the access terminal does not automatically open a session, perform whatever actions are necessary to open a session. See Establish a Session from the Access Terminal for more details.
Prompt the user to establish an RTAP data connection. See Step 4: Make a connection for more details.
Set up the waveform quality + code domain measurement parameters as needed using the SETup:DOWQuality commands. See Waveform Quality + Code Domain Measurement Parameters for information on setting slots to measure to the proper value for your test.
Set cell power as needed using the CALL:POWer command.
Initiate the waveform quality + code domain power measurement using the INITiate:<measurement mnemonic>[:ON] command. The <measurement mnemonic> for the waveform quality + code domain measurement is DOWQuality.
Use the FETCh:DOWQuality commands to obtain the measurement results. (You can also replace steps 5 and 6 with a single command - READ:DOWQuality[:ALL]? ).

Programming Example

 
10 ! 4.2.2 Waveform Quality and Frequency Accuracy
20 ! This programming example assumes the access terminal
30 ! is connected to the test set and in a 9.6 kbps
40 ! RTAP data connection.
50 !
60       Testset=714
70 !
80       DISP "Measuring Waveform Quality"
90 !
100 !***Set up test parameters***
110 !
120       Ior=-75
130       ! Cell power for test
140 !
150       OUTPUT Testset;"CALL:POW ";Ior
160       ! Set cell power
170 !
180 !***Set up measurement parameters***
190 !
200       OUTPUT Testset;"SETUP:DOWQUALITY:CONTINUOUS OFF"
210       ! Set measurement to single trigger
220       OUTPUT Testset;"SETUP:DOWQ:TIMEOUT 10"
230       ! Set waveform quality measurement timeout to 10 seconds
240       OUTPUT Testset;"SETUP:DOWQ:SLOT:COUNT 1"
250       ! Set slots to measure to 1
260 !
270 !***INITiate and FETCh measurement results***
280 !
290       OUTPUT Testset;"INITIATE:DOWQUALITY"
300       ! Initiate a waveform quality + code domain measurement
310       OUTPUT Testset;"FETCh:DOWQUALITY?"
320       ! Query the test set for waveform quality measurement results
330       ENTER Testset;Integrity,Rho,F_err,T_err,C_feed,P_err,M_err,Evm
340 !
350 !***Print Waveform Quality results***
360 !
370       CLEAR SCREEN
380       PRINT "Waveform Quality Test Results:"
390       PRINT
400       PRINT "Integrity Indicator       = ",Integrity
410       PRINT "Rho                       = ",Rho
420       PRINT "Frequency Error (Hz)      = ",F_err
430       PRINT "Time Error (s)            = ",T_err
440       PRINT "Carrier Feedthrough (dBc) = ",C_feed
450       PRINT "Phase Error (degrees)     = ",P_err
460       PRINT "Magnitude Error (%)       = ",M_err
470       PRINT "EVM (%)                   = ",Evm
480       PRINT
490       PRINT "Waveform Quality Test Complete"
500 !
510 !***Post test clean up***
520 !
530       OUTPUT Testset;"INIT:DOWQ:OFF"
540       OUTPUT Testset;"CALL:POW -55"
550       ! Set cell power back to initial level
560       DISP ""
570 !
580       END

Programming a Waveform Quality/Code Domain Measurement

General Procedure

Programming Example

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