Step 4: Make A Connection; Originating A Connection From The Test Set - Agilent Technologies 8960 Series Reference Manual

Step 4: Make a Connection

Step 4: Make a Connection
In this step you establish communication between the test set and user equipment such that measurements
can be made. There are three possible ways to make a connection with the UE.
•

"Originating a Connection from the Test Set"

• "Originating a Connection from the UE"
• "Make a Connection using Test Mode Commands"
Originating a Connection from the Test Set
The code below illustrates how to make a connection by orginating a call from the test set and taking
advantage of the repeat paging feature to decrease connection speed.
Origination is performed in a subroutine to allow the use of a timeout separate from the control program's
GPIB timeout. This is necessary because the use of repeat paging prevents the use of the state change detector
and it's associated timeout (activated by the CALL:CONN? hanging query). Therefore, to prevent GPIB bus from
hanging indefinitely, which could occur if the UE is not turned on or badly broken, a timeout is implemented in
the subroutine on line 2790. The :SEQ sequential command is appended to the CALL:ORIG command to prevent
subsequent commands from being accepted by the test set before repeated pages can be used to originate a
connection.
1060 PRINT "Turn the UE on now."
1070 Originate ! Subroutine to originate a connection
2810 SUB Originate
2820 COM /Address/ INTEGER Testset
2830 ON TIMEOUT 7,10 CALL Orig_failed
2840 OUTPUT Testset;"CALL:ORIG:SEQ"
2850 OUTPUT Testset;"CALL:CONN?"
2860 ENTER Testset;Connected
2870 IF NOT Connected THEN
2880 PRINT "Call origination not successful."
2890 STOP
2900 END IF
2910 SUBEND
If the origination fails
By using repeat paging, a situation has been introduced in which the test set will not respond to subsequent
GPIB commands until the origination is successful. Once the origination attempt has timed out, it becomes
necessary to send the test set a Device Clear remote command (IEEE 488.2 Section 6.1.4.2.6) to free up the
remote user interface. In HP BASIC this is the CLEAR command, see line 1900. Subsequently, you can send the
CALL:END command to stop paging the UE and proceed with the control program.
1920 SUB Orig_failed
1930 COM /Address/ INTEGER Testset
1940 CLEAR Testset
1950 OUTPUT Testset;"CALL:END"
1960 PRINT "Origination failed. Check conditions and run again."
102
S:\Hp8960\E1963A WCDMA\4.0 release\Reference Guide\Chapters\wcdma_prog_getting_started_step4.fm