Step 6: Reconfigure Test Set and UE Connection Parameters

Reconfigure the Connection when using Active Cell

The example below illustrates how to change the downlink and uplink channels. The process used to reconfigure the connection is to first change the parameter settings with CALL:SET commands. These new parameters are activated when the CALL:HAND command is sent. The CALL:STAT? query is used to ensure the call is still connected. If the connection is compromised, the subroutine Dropped_call is called.

 
1260  !Use deferred commands to set up new channels
1270    OUTPUT Testset;"CALL:SET:CHAN:DOWN 10526"
1280    OUTPUT Testset;"CALL:SET:CHAN:UPL 9626"
1290    OUTPUT Testset;"CALL:HAND:PCR" ! Executes the handoff
1300    OUTPUT Testset;"CALL:STAT?" ! Verify the handoff success
1310    ENTER Testset;Call_state$
1320    IF Call_stat$<>"CONN" THEN Dropped_call

Reconfigure the Connection when using Test Mode

If you change the test set configuration, such as downlink frequency or primary scrambling code, you must configure the test set and then allow the user equipment to find the new configuration and synchronize to it before proceeding with measurements. It is not necessary to use the CALL:HAND command used when the UE is on an active call.