Programming a Tx Spurious Emissions Measurement

General Programming Procedure

1. 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.
2. Prompt the user to establish an RTAP data connection. See Step 4: Make a connection for more details.
3. Set up the access parameters as needed using the CALL:APARameter commands.
4. Set up the TX spurious emissions measurement parameters as needed using the SETup:CTXSpurious commands.
5. Set cell power as needed using the CALL:POWer command.
6. Set the Reverse Closed Loop Power Control mode as needed using the CALL[:CELL[1]]:CLPControl:REVerse:MODE<[:SELected]|:TA856> command.
7. Initiate the TX spurious emissions measurement using the INITiate:<measurement mnemonic>[:ON] command. The <measurement mnemonic> for the TX spurious emissions measurement is CTXSpurious.
8. Use the FETCh:CTXSpurious commands to obtain the measurement results. (You can also replace steps 7 and 8 with a single command - READ:CTXS purious[:ALL]? ).

Programming Example: 4.4.1 Conducted Spurious Emissions

 
10 ! 4.4.1 Conducted Spurious Emissions
20 ! This programming example assumes the access terminal
30 ! is connected to the test set and in a 153.6 kbps
40 ! RTAP data connection.
50 !
60       Testset=714
70 !
80       DISP "Measuring TX Spurious Emissions"
90 !
100 !***Set up test parameters***
110 !
120       Ior=-60
130       ! Set cell power for test
140       Ol_adjust=84
150       ! Set Open Loop Adjust for Band Class 4
160 !
170       OUTPUT Testset;"CALL:APAR:POWER:OLADJUST ";Ol_adjust
180       ! Set Open Loop Adjust
190       OUTPUT Testset;"CALL:APAR:PROBE:IADJUST 15"
200       ! Set Probe Initial Adjust
210       OUTPUT Testset;"CALL:APAR:PROBE:STEP:COUNT 15"
220       ! Set Probe Num Steps
230       !OUTPUT Testset;"CALL:APAR:PROBE:SEQUENCE 15"
240       ! Set Probe Sequence Max - this parameter setting is required
250       ! by C.S0033 but does not affect test results. It is a legacy
260       ! parameter setting from IS-98. Changing this parameter drops
270       ! the connection, as required by C.S0024. It is recommended not
280       ! to send this command.
290       OUTPUT Testset;"CALL:APAR:PROBE:POWER:STEP 7.5"
300       ! Set Probe Step
310 !
320 !***Set up measurement parameters***
330 !
340       OUTPUT Testset;"SETUP:CTXSPURIOUS:CONTINUOUS OFF"
350       ! Set measurement to single trigger
360       OUTPUT Testset;"SETUP:CTXS:TIMEOUT 5"
370       ! Set TX Spur Emissions timeout to 5 sec
380 !
390 !***Set test conditions***
400 !
410       OUTPUT Testset;"CALL:POW ";Ior
420       ! Set Cell Power for Test
430       OUTPUT Testset;"CALL:CLPCONTROL:REVERSE:MODE UP"
440       ! Start transmission of All Up (0) power control bits
450       WAIT 1
460       ! Settling time to allow mobile power to slew up to maximum power
470 !
480 !***Obtain measurement results***
490 !
500       OUTPUT Testset;"INITIATE:CTXS"
510       ! Initiate TX spurious emissions measurement
520 !
530       OUTPUT Testset;"FETCH:CTXS?"
540       ! Fetch TX spurious emissions results
550       ENTER Testset;Ctxs_integ,Ctxs_pf,Low_adj,Upp_adj,Low_alt,Upp_alt
560 !
570       SELECT Ctxs_pf
580       ! Assign CTXS pass/fail results to a string
590       CASE 0
600           Pass_fail$="PASS"
610       CASE 1
620           Pass_fail$="FAIL"
630       END SELECT
640 !
650 !***Print TX Spurious Test Results
660 !
670       CLEAR SCREEN
680       PRINT "TX Spurious Emissions Test Results:"
690       PRINT
700       PRINT "Integrity Indicator               = ",Integrity
710       PRINT "TX Spurious Emissions Test Result = ",Pass_fail$
720       PRINT "Lower Adjacent Power (dBc)        = ",Low_adj
730       PRINT "Upper Adjacent Power (dBc)        = ",Upp_adj
740       PRINT "Lower Alternate Power (dBc)       = ",Low_alt
750       PRINT "Upper Alternate Power (dBc)       = ",Upp_alt
760       PRINT
770       PRINT "TX Spurious Emissions Test Complete"
780 !
790 !***Post test clean up***
800 !
810       OUTPUT Testset;"CALL:CLPCONTROL:REVERSE:MODE ACTIVE"
820       ! Return to active power control bits
830       OUTPUT Testset;"CALL:POW -55"
840       ! Set cell power back to initial level
850       ! Do this before reconfiguring other parms so signaling
860       OUTPUT Testset;"CALL:APAR:PROBE:IADJUST 0"
870       ! Set Access parameters for test
880       OUTPUT Testset;"CALL:APAR:PROBE:STEP:COUNT 5"
890       ! Set Access paramters for test
900       !OUTPUT Testset;"CALL:APAR:PROBE:SEQUENCE 1"
910       ! Set Access paramters for test (not necessary if commented
920       ! out command before test)
930       OUTPUT Testset;"CALL:APAR:PROBE:POWER:STEP 1"
940       ! Set Access paramters for test
950       OUTPUT Testset;"INIT:CTXS:OFF"
960       ! Turn TX spurious emissions off
970       DISP ""
980 !
990       END

Related Topics

TX Spurious Emissions Measurement Description

Manual Operation: Measuring TX Spurious Emissions

Tx Spurious Emissions Measurement Troubleshooting

4.4.1 Conducted Spurious Emissions

Programming: Getting Started Guide for 1xEV-DO Terminal Test