Programming a Wideband Data Deviation Measurement

General Programming Procedure

Make a call
Configure the Wideband Data Deviation setup parameters using SETup:WDDeviation subsystem.
Start the wideband data deviation measurement using INITiate subsystem.
Change the Analogue MS TX Level value using CALL:MS:ANALog:TXLevel[:IMMediate] .
Use the FETCh:WDDeviation command to obtain the measurement results.

Programming Example

 
1        ! This program measures the Wideband Data Deviation
3        !
6        CLEAR SCREEN
7        ! E5515C GPIB Address
8        Testset=714
11       Systype$="AMPS"
12       !System Identification
13       Sid=1
14       !
15       ! Calls "Timeout" routine
17       ON TIMEOUT 7,20 CALL Timeout
18       !
19       ! *** Specify call parameters ***
20       OUTPUT Testset;"SYST:COMM:GPIB:DEB:STAT ON"
21       OUTPUT Testset;"SYST:CORR:STAT OFF"
22       ! Sets Operating Mode to be Active Cell
23       OUTPUT Testset;"CALL:OPER:MODE CALL"
24       ! System Type is set to be AMPS
25       OUTPUT Testset;"CALL:SYST ";Systype$
26       ! Set System Identification
27       OUTPUT Testset;"CALL:SID:AMPS";Sid
28       ! Set analog MS TX Level
29       OUTPUT Testset;"CALL:MS:ANAL:TXL 6"
30       !
64       PRINT "Turn on mobile station..."
65       PRINT "Press continue when it has found service and registred"
66       PAUSE
67       !
68       ! *** Paging the mobile station ***
69       PRINT "Paging mobile station..."
70       PRINT "Answer the mobile station when you are ready"
71       OUTPUT Testset;"CALL:ORIG"
72        !Query for connected/idle state
73       OUTPUT Testset;"CALL:CONN:STAT?"
74       ENTER Testset;Call_connected
75       IF NOT Call_connected THEN
76          DISP "Call attempt failed"
77          STOP
78       ELSE
79          DISP "Call connected"
80       END IF
81       PRINT "Connection established, test in progress"
82       !
83       ! *** Setup Wideband data  measurement parameters ***
84       ! Single measurement
85       OUTPUT Testset;"SET:WDD:CONT OFF"
86       OUTPUT Testset;"SET:WDD:GTIM 3"
88       !
96       ! *** Obtain measurement results ***
97       OUTPUT Testset;"INIT:WDD"
98       WAIT 1
99       ! Change Analog MS TX Level value to
100      ! trigger the test set to send Analog MS TX Level Order Message
101      OUTPUT Testset;"CALL:MS:ANAL:TXL 7"
102      WAIT 2
103      OUTPUT Testset;"FETC:WDD:ALL?"
105      ENTER Testset;Integrity,Maxppd,Maxnpd,Settleppd,Settlenpd
106      DISP "Wideband Data Test complete"
107      OUTPUT Testset;"INIT:WDD:OFF"
108      OUTPUT Testset;"CALL:END"
109      ! *** Display the measurement results ***
110      !
111      PRINT "Integrity Indicator = ";Integrity
112      PRINT "Wideband data Max Positive Peak Deviation = ";Maxppd
113      PRINT "Wideband data Max Positive Peak Deviation = ";Maxnpd
114      PRINT "Wideband data Settled Positive Peak Deviation = ";Settleppd
115      PRINT "Wideband data Settled Positive Peak Deviation = ";Settlenpd
121  END
122  !
123  ! Global timeout handler
185  Timeout: SUB Timeout
187                  PRINT "Program timed out"
188                  CLEAR 7
189                  CLEAR 714
190           SUBEND

Returned Values

The measurements returned by this program are:

Integrity returns the measurement integrity indicator (see Integrity Indicator ); 0 means a successful measurement with no errors.
Maxppd returns the maximum positive peak deviation of carrier over the entire wideband data burst in kHz.
Maxnpd returns the maximum negative peak deviation of carrier of the entire wideband data burst in kHz.
Settleppd returns the positive peak deviation of carrier over the wideband data burst, not including any peaks found during the first 20 milliseconds of the wideband data burst.
Settlenpd returns the negative peak deviation of carrier over the wideband data burst, not including any peaks found during the first 20 milliseconds of the wideband data burst

Programming a Wideband Data Deviation Measurement

General Programming Procedure

Programming Example

Returned Values

Related Topics