Agilent 8922P Programmers Guide

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Agilent Technologies 8922M/S GSM Test Set

Programming Reference Guide

Agilent Part No. 08922-90212

Printed in UK

January, 1998

written permission is prohibited, except as allowed under the copyright laws.

Station Road, South Queensferry, Scotland, EH30 9TG, UK

1 Command Guidelines

Command Names............................................................................................................................................................................ 1-2

Programming Format Conventions................................................................................................................................................. 1-2

If you have Agilent Technologies 8922M/S Option 010................................................................................................................1-3

Units of Measure............................................................................................................................................................................. 1-4

Measurement Subsystems............................................................................................................................................................... 1-5

Syntax Diagrams............................................................................................................................................................................. 1-5

Optional Commands ....................................................................................................................................................................... 1-6

Command Descriptions................................................................................................................................................................... 1-7

Output RF Spectrum Modulation Reference Measurement Averaging..........................................................................................1-8

2 GPIB Tutorial and Examples

GPIB Programming Exercises........................................................................................................................................................ 2-2

Exercise A - Establishing a Link ....................................................................................................................................................2-3

Example B - Controlling the Mobile ..............................................................................................................................................2-4

Example C - Making Measurements .............................................................................................................................................. 2-6

Example D - Adding Robustness.................................................................................................................................................. 2-11

Example E - Faster Testing........................................................................................................................................................... 2-12

GPIB Commands Used in Exercises.............................................................................................................................................2-14

Example Programs........................................................................................................................................................................2-16

Sample Output ..............................................................................................................................................................................2-18

Program 1...................................................................................................................................................................................... 2-19

Program 2...................................................................................................................................................................................... 2-29

Program 3...................................................................................................................................................................................... 2-40

Transient Settling Times ..............................................................................................................................................................2-50

Contents

3 AF Analyzer Subsystem

AIN .................................................................................................................................................................................................3-4

DEMPhasis .....................................................................................................................................................................................3-4

DEMPhasis:GAIN .......................................................................................................................................................................... 3-4

DETector......................................................................................................................................................................................... 3-4

DETector:PKLocation.....................................................................................................................................................................3-5

DETector:SETTling........................................................................................................................................................................ 3-5

ELResistor ...................................................................................................................................................................................... 3-5

FILTer1............................................................................................................................................................................................3-6

FILTer2............................................................................................................................................................................................3-6

GTIMe ............................................................................................................................................................................................ 3-6

INPut...............................................................................................................................................................................................3-7

INPut:GAIN.................................................................................................................................................................................... 3-7

SMPoint .......................................................................................................................................................................................... 3-7

NOTCh:GAIN.................................................................................................................................................................................3-7

RANGing........................................................................................................................................................................................3-8

SPEaker:MODE.............................................................................................................................................................................. 3-8

SPEaker:VOLume...........................................................................................................................................................................3-8

Contents-1

Contents

4 AF Generator Subsystem

AMPLitude .....................................................................................................................................................................................4-3

COUPling........................................................................................................................................................................................ 4-3

FREQuency..................................................................................................................................................................................... 4-3

5 Audio Frequency Commands (Measure Subsystem)

ACLevel..........................................................................................................................................................................................5-4

AM..................................................................................................................................................................................................5-4

DCAM.............................................................................................................................................................................................5-4

DCFM............................................................................................................................................................................................. 5-5

DCVolts........................................................................................................................................................................................... 5-5

DISTortion......................................................................................................................................................................................5-5

FM................................................................................................................................................................................................... 5-6

FREQuency..................................................................................................................................................................................... 5-6

SELect............................................................................................................................................................................................. 5-6

SINad .............................................................................................................................................................................................. 5-7

6 Bit Error Test Subsystem

BITS................................................................................................................................................................................................6-3

LOOPback:LDELay .......................................................................................................................................................................6-3

LOOPback:LDELay:MODE...........................................................................................................................................................6-3

TYPE...............................................................................................................................................................................................6-4

7 Bit Error Test Commands (Measure Subsystem)

BESelect.......................................................................................................................................................................................... 7-4

BERRor:COUNt............................................................................................................................................................................. 7-4

BERRor:ICOunt.............................................................................................................................................................................. 7-4

BERRor:IRATio.............................................................................................................................................................................. 7-5

BERRor:RATio...............................................................................................................................................................................7-5

BTESted..........................................................................................................................................................................................7-5

CRC:COUNt...................................................................................................................................................................................7-6

CRC:ICOunt ...................................................................................................................................................................................7-6

CRC:IRATio....................................................................................................................................................................................7-6

CRC:RATio..................................................................................................................................................................................... 7-7

FERasure:COUNt........................................................................................................................................................................... 7-7

FERasure:ICOunt............................................................................................................................................................................ 7-7

FERasure:IRATio............................................................................................................................................................................ 7-8

FERasure:RATio.............................................................................................................................................................................7-8

FLSelect..........................................................................................................................................................................................7-8

FLTYpe........................................................................................................................................................................................... 7-9

IBTested..........................................................................................................................................................................................7-9

SSTatus........................................................................................................................................................................................... 7-9

Contents-2

8 Cell Conﬁguration Subsystem

ABCCh............................................................................................................................................................................................ 8-7

ABCCh:BCC .................................................................................................................................................................................. 8-7

CCHannel........................................................................................................................................................................................ 8-7

CCHannel:SDCCH8:ARFCn.......................................................................................................................................................... 8-8

CCHannel:SDCCH8:TSLot............................................................................................................................................................ 8-8

BA...................................................................................................................................................................................................8-8

CA...................................................................................................................................................................................................8-9

MA1................................................................................................................................................................................................8-9

MA1:IOFFset.................................................................................................................................................................................. 8-9

MA2..............................................................................................................................................................................................8-10

MA2:IOFFset................................................................................................................................................................................ 8-10

[:GSM900]:BA..............................................................................................................................................................................8-10

[:GSM900]:CA .............................................................................................................................................................................8-11

[:GSM900]:MA1 .......................................................................................................................................................................... 8-11

[:GSM900]:MA1:IOFFset ............................................................................................................................................................ 8-11

[:GSM900]:MA2 .......................................................................................................................................................................... 8-12

[:GSM900]:MA2:IOFFset ............................................................................................................................................................ 8-12

LAI:MCCode................................................................................................................................................................................8-12

LAI:MNCode................................................................................................................................................................................ 8-13

LAI:LACode.................................................................................................................................................................................8-13

SCELl:ARFCn..............................................................................................................................................................................8-13

SCELl:BCC .................................................................................................................................................................................. 8-13

SCELl:NCC .................................................................................................................................................................................. 8-14

STATe............................................................................................................................................................................................8-14

Contents

9 Cell Control Subsystem

AUDio:DAI:ATESt......................................................................................................................................................................... 9-8

AUDio:DAI:NORMal.....................................................................................................................................................................9-8

AUDio:LOOPback.......................................................................................................................................................................... 9-8

AUDio:LOOPback:FAST............................................................................................................................................................... 9-8

AUDio:LOOPback:FE.................................................................................................................................................................... 9-8

AUDio:LOOPback:OFF................................................................................................................................................................. 9-9

AUDio:LOOPback:NOFE.............................................................................................................................................................. 9-9

AUDio:SPEech:CONFigure........................................................................................................................................................... 9-9

AUDio:SPEech:EDELay.............................................................................................................................................................. 9-10

AUDio:SPEech:GAIN.................................................................................................................................................................. 9-10

AUDio:SPEech:PRBS:PATTern ...................................................................................................................................................9-10

CALL:CONNect...........................................................................................................................................................................9-11

CALL:COUNt:BSYNc.................................................................................................................................................................9-11

CALL:COUNt:DERRor | FERRor ............................................................................................................................................... 9-11

CALL:COUNt:PAGE ................................................................................................................................................................... 9-11

CALL:COUNt:RACH .................................................................................................................................................................. 9-12

CALL:COUNt:RESet................................................................................................................................................................... 9-12

CALL:END................................................................................................................................................................................... 9-12

CALL:LIMit .................................................................................................................................................................................9-12

CALL:ORIGinate .........................................................................................................................................................................9-13

CALL:PAGing.............................................................................................................................................................................. 9-13

CALL:RECeive.............................................................................................................................................................................9-13

CALL:SIGNaling.......................................................................................................................................................................... 9-14

Contents-3

Contents

CALL:TCH:ARFCn .....................................................................................................................................................................9-14

CALL:TCH:TSLot........................................................................................................................................................................ 9-14

CALL:STATus:CALLer................................................................................................................................................................9-14

CALL:STATus:CIPHering[:STATe] ............................................................................................................................................. 9-15

CALL:STATus:MM[:STATe]........................................................................................................................................................ 9-15

CALL:STATus:RR[:STATe] ......................................................................................................................................................... 9-16

CALL:STATus:STATe................................................................................................................................................................... 9-16

CALL:STATus:TCH:ARFCn........................................................................................................................................................9-16

CALL:STATus:TCH:MALLocation.............................................................................................................................................9-17

CALL:STATus:TCH:MODE........................................................................................................................................................ 9-17

CALL:STATus:TCH:TSLot.......................................................................................................................................................... 9-17

CALL:STATus:TCH:TYPE..........................................................................................................................................................9-17

CALL:TCHControl....................................................................................................................................................................... 9-18

CALL:TCHControl:EXECute ...................................................................................................................................................... 9-18

MODE........................................................................................................................................................................................... 9-18

MS:DRX[:STATe].........................................................................................................................................................................9-19

MS:DTX[:STATe]......................................................................................................................................................................... 9-19

MS:TADVance..............................................................................................................................................................................9-19

MS:TADVance:MODE................................................................................................................................................................. 9-19

MS:TLEVel...................................................................................................................................................................................9-20

TCH1 or TCH2:ARFCn................................................................................................................................................................ 9-20

TCH1 or TCH2:MALLocation.....................................................................................................................................................9-20

TCH1 or TCH2:MODE ................................................................................................................................................................ 9-20

TCH1 or TCH2:TSLot..................................................................................................................................................................9-21

TCH1 or TCH2:TYPE..................................................................................................................................................................9-21

10 Conﬁgure Subsystem

BADDress.....................................................................................................................................................................................10-7

BEEPer.......................................................................................................................................................................................... 10-7

BMODe......................................................................................................................................................................................... 10-7

COMPatible .................................................................................................................................................................................. 10-8

DATE ............................................................................................................................................................................................10-8

INTensity.......................................................................................................................................................................................10-8

OFLevel:MODE............................................................................................................................................................................10-8

OFLevel:AUXin............................................................................................................................................................................ 10-9

OFLevel:AUXout.......................................................................................................................................................................... 10-9

OFLevel:RFINout.........................................................................................................................................................................10-9

OPERation:AUTO......................................................................................................................................................................10-10

OPERation:HOLD......................................................................................................................................................................10-10

PRINt:ADDRess.........................................................................................................................................................................10-10

PRINt:DESTination....................................................................................................................................................................10-11

PRINt:FFENd .............................................................................................................................................................................10-11

PRINt:FFSTart............................................................................................................................................................................10-11

PRINt:LINes............................................................................................................................................................................... 10-11

PRINt:PRINter............................................................................................................................................................................10-12

PRINt:TITle................................................................................................................................................................................10-12

RADio.........................................................................................................................................................................................10-12

RFIMpedance.............................................................................................................................................................................. 10-12

ROSCillator:CALibrate .............................................................................................................................................................. 10-13

ROSCillator[:FREQuency].........................................................................................................................................................10-13

Contents-4

ROSCillator:OFFset.................................................................................................................................................................... 10-13

ROSCillator:TUNing..................................................................................................................................................................10-13

ROUT.......................................................................................................................................................................................... 10-14

SPORt:BAUD ............................................................................................................................................................................. 10-14

SPORt:DATA.............................................................................................................................................................................. 10-14

SPORt:IBECho........................................................................................................................................................................... 10-14

SPORt:PARity............................................................................................................................................................................. 10-15

SPORt:RPACe.............................................................................................................................................................................10-15

SPORt:SIN.................................................................................................................................................................................. 10-15

SPORt:STOP...............................................................................................................................................................................10-16

SPORt:XPACe............................................................................................................................................................................ 10-16

TIME........................................................................................................................................................................................... 10-16

11 CW Subsystem

PMZero......................................................................................................................................................................................... 11-2

12 CW Commands (Measure Subsystem)

FREQuency[:ABSolute]............................................................................................................................................................... 12-3

FREQuency:ERRor.......................................................................................................................................................................12-3

FREQuency:SELect...................................................................................................................................................................... 12-3

POWer...........................................................................................................................................................................................12-4

Contents

13 DISPlay Subsystem

[:SCReen]...................................................................................................................................................................................... 13-3

BETest:MNUMber:LEFT............................................................................................................................................................. 13-3

BETest:MNUMber:RIGHt............................................................................................................................................................13-3

CELL:SACCh:ACEL1..................................................................................................................................................................13-3

CELL:TCH[:SELect].................................................................................................................................................................... 13-4

DSPanalyzer:AMPLitude:MASK................................................................................................................................................. 13-4

DSPanalyzer:AMPLitude:MASK:PCS.........................................................................................................................................13-4

DSPanalyzer:VIEW...................................................................................................................................................................... 13-4

FREeze.......................................................................................................................................................................................... 13-5

MSYNc:BURSt:NUMBer ............................................................................................................................................................ 13-5

ORFSpectrum:VIEW.................................................................................................................................................................... 13-5

PULSe:VIEW ...............................................................................................................................................................................13-6

SANalyzer:CONTrol .................................................................................................................................................................... 13-6

14 DSP Analyzer Subsystem

AMPLitude:MARKer:POSition:FALL......................................................................................................................................... 14-3

AMPLitude:MARKer:POSition:MID...........................................................................................................................................14-3

AMPLitude:MARKer:POSition:RISE.......................................................................................................................................... 14-3

AMPLitude:PMZero.....................................................................................................................................................................14-3

AMPLitude:TIME ........................................................................................................................................................................ 14-4

DBITs:TPOLarity......................................................................................................................................................................... 14-4

PHASe:MARKer:POSition...........................................................................................................................................................14-4

PHASe:MIDamble........................................................................................................................................................................ 14-4

Contents-5

Contents

15 DSP Analyzer Commands (Measure Subsystem)

[:AMPLitude]:AMPLitude ...........................................................................................................................................................15-4

[:AMPLitude]:MARKer:LEVEL:FALL.......................................................................................................................................15-4

[:AMPLitude]:MARKer:LEVEL:MID......................................................................................................................................... 15-5

[:AMPLitude]:MARKer:LEVEL:RISE........................................................................................................................................15-5

[:AMPLitude]:MARKer:TIME:FALL.......................................................................................................................................... 15-6

[:AMPLitude]:MARKer:TIME:MID............................................................................................................................................ 15-6

[:AMPLitude]:MARKer:TIME:RISE........................................................................................................................................... 15-7

[:AMPLitude]:MSUMmary..........................................................................................................................................................15-7

[:AMPLitude]:NPFLatness...........................................................................................................................................................15-8

[:AMPLitude]:PPFLatness............................................................................................................................................................ 15-8

[:AMPLitude]:PTCPower.............................................................................................................................................................15-8

[:AMPLitude]:TRACe..................................................................................................................................................................15-9

DBITs............................................................................................................................................................................................ 15-9

DBITs:TAGS.................................................................................................................................................................................15-9

FBIT............................................................................................................................................................................................15-10

FMERrors ...................................................................................................................................................................................15-10

PHASe[:ERRor]:FREQuency..................................................................................................................................................... 15-10

PHASe[:ERRor]:PEAK..............................................................................................................................................................15-11

PHASe[:ERRor]:RMS................................................................................................................................................................15-11

PHASe:MARKer:ERRor............................................................................................................................................................15-12

PHASe:MARKer:TIME..............................................................................................................................................................15-12

PHASe:MBURst.........................................................................................................................................................................15-12

PHASe:MBURst:COUNt ...........................................................................................................................................................15-13

PHASe:MBURst:DONE............................................................................................................................................................. 15-13

PHASe:MBURst:ERRors........................................................................................................................................................... 15-13

PHASe:TRACe...........................................................................................................................................................................15-13

SSTatus....................................................................................................................................................................................... 15-14

16 EMMI Subsystem (Agilent 8922M Only)

BRATe...........................................................................................................................................................................................16-3

DATA?...........................................................................................................................................................................................16-3

DATA <data entry>.......................................................................................................................................................................16-4

RESet ............................................................................................................................................................................................ 16-4

TIMEout:MS:XON.......................................................................................................................................................................16-4

TIMEout:MS:RESPonse............................................................................................................................................................... 16-5

17 Fast Bit Error Test

BITS..............................................................................................................................................................................................17-3

LOOPback:LDELay .....................................................................................................................................................................17-3

LOOPback:LDELay:MODE.........................................................................................................................................................17-3

FORMat ........................................................................................................................................................................................ 17-3

RFGenerator:ATSLot.................................................................................................................................................................... 17-4

Contents-6

18 Fast Bit Error Test (Measure Subsystem)

BTESted........................................................................................................................................................................................ 18-3

IBTested........................................................................................................................................................................................ 18-3

BERRor:COUNt........................................................................................................................................................................... 18-3

BERRor:ICOUnt........................................................................................................................................................................... 18-3

BERRor:IRATio............................................................................................................................................................................ 18-4

BERRor:RATio.............................................................................................................................................................................18-4

BESelect........................................................................................................................................................................................ 18-4

SSTatus......................................................................................................................................................................................... 18-4

19 Fast TX Carrier Power (Measure Subsystem)

FTCPower[:POWer]...................................................................................................................................................................... 19-2

20 Hop Control Subsystem

ADDRess ...................................................................................................................................................................................... 20-4

ADDRess:NEXT .......................................................................................................................................................................... 20-4

ADDRess:RESet...........................................................................................................................................................................20-4

ADDRess:SOURce.......................................................................................................................................................................20-4

CTENd..........................................................................................................................................................................................20-5

DELete..........................................................................................................................................................................................20-5

INSert............................................................................................................................................................................................ 20-5

RFANalyzer or RFGenerator:CTENd...........................................................................................................................................20-6

RFANalyzer or RFGenerator:DELete...........................................................................................................................................20-6

RFANalyzer or RFGenerator:FREQuency ...................................................................................................................................20-6

RFANalyzer or RFGenerator:INSert............................................................................................................................................ 20-7

RFANalyzer or RFGenerator:MODE...........................................................................................................................................20-7

RFANalyzer or RFGenerator:SETTling.......................................................................................................................................20-7

RFANalyzer or RFGenerator[:TRIGger]:ASTate......................................................................................................................... 20-8

Contents

21 IEEE 488.2 Common Commands

*CLS (Clear Status)......................................................................................................................................................................21-2

*ESE (Event Status Enable) ......................................................................................................................................................... 21-3

*ESR? (Event Status Register) ....................................................................................................................................................21-4

*IDN? (Identiﬁcation Number) .................................................................................................................................................... 21-5

*OPC (Operation Complete) ....................................................................................................................................................... 21-6

*OPT? .......................................................................................................................................................................................... 21-7

*RCL (Recall) ..............................................................................................................................................................................21-8

*RST (Reset)................................................................................................................................................................................. 21-9

*SAV (Save) ............................................................................................................................................................................... 21-10

*SRE (Service Request Enable) ................................................................................................................................................ 21-11

*STB? (Status Byte) .................................................................................................................................................................. 21-12

*TST? (Test) .............................................................................................................................................................................. 21-13

*WAI (Wait) ...............................................................................................................................................................................21-14

Contents-7

Contents

22 LOGGing Subsystem

DATA:FLUSh ...............................................................................................................................................................................22-3

DATA:CLEar.................................................................................................................................................................................22-3

PFILter..........................................................................................................................................................................................22-3

STATe............................................................................................................................................................................................22-4

23 Measurement Sync Subsystem

BURSt:LENGth............................................................................................................................................................................23-3

BURSt:SPSPosition......................................................................................................................................................................23-3

BURSt:TQUaliﬁer ........................................................................................................................................................................ 23-3

BURSt:TYPE................................................................................................................................................................................23-4

BURSt:UDSPattern.......................................................................................................................................................................23-4

SYNC:BSELect ............................................................................................................................................................................ 23-4

SYNC:MODE...............................................................................................................................................................................23-5

24 Mobile Station Commands (Measure Subsystem)

MS:TERRor..................................................................................................................................................................................24-3

MS:TADVance..............................................................................................................................................................................24-3

SACCh:ACEL1:ARFCn...............................................................................................................................................................24-3

SACCh:ACEL1:BCC....................................................................................................................................................................24-3

SACCh:ACEL1:NCC................................................................................................................................................................... 24-3

SACCh:ACEL1:RLEVel...............................................................................................................................................................24-4

SACCh:FULL:RLEVel .................................................................................................................................................................24-4

SACCh:FULL:RQUality .............................................................................................................................................................. 24-4

SACCh:PARTial:RLEVel..............................................................................................................................................................24-4

SACCh:PARTial:RQUality...........................................................................................................................................................24-4

SACCh:RESet............................................................................................................................................................................... 24-5

SACCh:TADVance........................................................................................................................................................................24-5

SACCh:TLEVel ............................................................................................................................................................................24-5

Contents-8

25 MS Information Subsystem

CIPHering:AMODe...................................................................................................................................................................... 25-3

CIPHering:KC .............................................................................................................................................................................. 25-3

CIPHering:KI................................................................................................................................................................................ 25-4

CIPHering:RAND......................................................................................................................................................................... 25-4

CIPHering:SRES .......................................................................................................................................................................... 25-4

CIPHering[:STATe].......................................................................................................................................................................25-4

MS:ATTach................................................................................................................................................................................... 25-5

MS:CMARk:PCLass?................................................................................................................................................................... 25-5

MS:CMARk:REVision?............................................................................................................................................................... 25-5

MS:CMARk:BAND?.................................................................................................................................................................... 25-5

MS:IMEI:REQuest .......................................................................................................................................................................25-6

MS:IMEI?..................................................................................................................................................................................... 25-6

MS:IMSI:SPAGing....................................................................................................................................................................... 25-6

MS:IMSI? .....................................................................................................................................................................................25-6

MS:LAI:LACode? ........................................................................................................................................................................ 25-6

MS:LAI:MCCode? .......................................................................................................................................................................25-7

MS:LAI:MNCode?....................................................................................................................................................................... 25-7

MS:ONUMber? ............................................................................................................................................................................ 25-7

MS:PAGPer................................................................................................................................................................................... 25-7

MS:SRES? .................................................................................................................................................................................... 25-7

[:PAGing]:IMSIdentity ................................................................................................................................................................. 25-8

[:PAGing]:TMSI:REALlocation...................................................................................................................................................25-8

[:PAGing]:TMSI:STATe................................................................................................................................................................ 25-8

Contents

26 OSCilloscope Subsystem

CONTrol....................................................................................................................................................................................... 26-3

MARKer:NPEak...........................................................................................................................................................................26-3

MARKer:PPEak............................................................................................................................................................................ 26-3

MARKer:POSition........................................................................................................................................................................ 26-3

SCALe:TIME................................................................................................................................................................................ 26-4

SCALe:VERTical:AM..................................................................................................................................................................26-4

SCALe:VERTical:FM................................................................................................................................................................... 26-4

SCALe:VERTical:OFFSet............................................................................................................................................................26-5

SCALe:VERTical:VOLTs............................................................................................................................................................. 26-5

TRIGger:LEVel............................................................................................................................................................................. 26-5

TRIGger:MODE........................................................................................................................................................................... 26-6

TRIGger:PRETrigger.................................................................................................................................................................... 26-6

TRIGger:RESet............................................................................................................................................................................. 26-6

TRIGger:SENSe ...........................................................................................................................................................................26-7

TRIGger:SOURce......................................................................................................................................................................... 26-7

TRIGger:TYPE.............................................................................................................................................................................26-7

Contents-9

Contents

27 Oscilloscope Commands (Measure Subsystem)

MARKer:LEVel:AM.....................................................................................................................................................................27-3

MARKer:LEVel:FM..................................................................................................................................................................... 27-3

MARKer:LEVel:VOLTs ............................................................................................................................................................... 27-3

MARKer:TIME.............................................................................................................................................................................27-4

TRACe..........................................................................................................................................................................................27-4

28 Output RF Spectrum Subsystem

FREQuency:OFFSet..................................................................................................................................................................... 28-3

MARKer:POSition........................................................................................................................................................................ 28-3

MODE........................................................................................................................................................................................... 28-4

SACalibrate................................................................................................................................................................................... 28-4

29 Output RF Spectrum Commands (Measure Subsystem)

FBIT..............................................................................................................................................................................................29-3

FMERrors .....................................................................................................................................................................................29-3

MARKer:LEVel............................................................................................................................................................................29-3

MARKer:TIME.............................................................................................................................................................................29-4

[:POWer]....................................................................................................................................................................................... 29-4

SSTatus......................................................................................................................................................................................... 29-5

TRACe..........................................................................................................................................................................................29-6

30 PULSe On/Off Ratio Subsystem

MARKer[:POSition]:FALL .......................................................................................................................................................... 30-3

MARKer[:POSition]:RISE........................................................................................................................................................... 30-3

MARKer:OPOSition:FALL..........................................................................................................................................................30-3

MARKer:OPOSition:RISE...........................................................................................................................................................30-4

SACalibrate................................................................................................................................................................................... 30-4

31 Pulse On/Off Ratio Commands (Measure Subsystem)

FBIT..............................................................................................................................................................................................31-3

FMERrors .....................................................................................................................................................................................31-3

MARKer:LEVel:FALL ................................................................................................................................................................. 31-3

MARKer:LEVel:RISE .................................................................................................................................................................. 31-4

MARKer:TIME:FALL.................................................................................................................................................................. 31-4

MARKer:TIME:RISE................................................................................................................................................................... 31-5

OORatio:FALL.............................................................................................................................................................................31-5

OORatio:RISE .............................................................................................................................................................................. 31-5

SSTatus......................................................................................................................................................................................... 31-6

TRACe:FALL ...............................................................................................................................................................................31-7

TRACe:RISE ................................................................................................................................................................................ 31-7

Contents-10

32 RF Analyzer Subsystem

AGC:CALibrate............................................................................................................................................................................ 32-4

AGC:DVALue...............................................................................................................................................................................32-4

AGC:MODE................................................................................................................................................................................. 32-4

AMPLitude1 .................................................................................................................................................................................32-4

AMPLitude2 .................................................................................................................................................................................32-5

[:AMPLitude]:ACCuracy..............................................................................................................................................................32-5

[:AMPLitude]:CONTrol............................................................................................................................................................... 32-5

FREQuency................................................................................................................................................................................... 32-6

FREQuency:GTIMe...................................................................................................................................................................... 32-6

FREQuency:HMEas .....................................................................................................................................................................32-6

FREQuency:OFFSet..................................................................................................................................................................... 32-7

GTIMe .......................................................................................................................................................................................... 32-7

INPut.............................................................................................................................................................................................32-7

ARFCn..........................................................................................................................................................................................32-7

33 RF Generator Subsystem

AMPLitude1 .................................................................................................................................................................................33-3

AMPLitude1:ATTenuation[:AUTO]............................................................................................................................................. 33-3

AMPLitude2 .................................................................................................................................................................................33-3

AMPLitude2:ATTenuation[:AUTO]............................................................................................................................................. 33-3

FREQuency................................................................................................................................................................................... 33-4

MODulation:DCAM.....................................................................................................................................................................33-4

MODulation:DCAM:DVALue......................................................................................................................................................33-5

MODulation:GMSK .....................................................................................................................................................................33-5

MODulation:PULSe .....................................................................................................................................................................33-5

MODulation:PULSe:MODE ........................................................................................................................................................ 33-6

OUTPut.........................................................................................................................................................................................33-6

Contents

34 SMS Cell Broadcast Subsystem

CONTrol....................................................................................................................................................................................... 34-3

MODE........................................................................................................................................................................................... 34-3

SEND............................................................................................................................................................................................34-3

STATus.......................................................................................................................................................................................... 34-4

MESS1 or MESS2:CODE ............................................................................................................................................................ 34-4

MESS1 or MESS2:UPDate .......................................................................................................................................................... 34-4

MESS1 or MESS2:IDENtiﬁer......................................................................................................................................................34-5

MESS1 or MESS2:LANGuage .................................................................................................................................................... 34-5

Contents-11

Contents

35 Spectrum Analyzer Subsystem

ATTenuator................................................................................................................................................................................... 35-4

ATTenuator:MODE.......................................................................................................................................................................35-4

ATTenuator2................................................................................................................................................................................. 35-4

ATTenuator:MODE.......................................................................................................................................................................35-5

CFRequency.................................................................................................................................................................................. 35-5

MARKer:CFRequency..................................................................................................................................................................35-5

MARKer:NPEak...........................................................................................................................................................................35-5

MARKer:PEAK............................................................................................................................................................................35-5

MARKer:POSition........................................................................................................................................................................ 35-6

MARKer:RLEVel..........................................................................................................................................................................35-6

RLEVel1........................................................................................................................................................................................ 35-6

RLEVel2........................................................................................................................................................................................ 35-6

SPAN............................................................................................................................................................................................. 35-7

TRACe:MHOLd........................................................................................................................................................................... 35-7

VBWidth.......................................................................................................................................................................................35-7

36 Spectrum Analyzer Commands (Measure Subsystem)

MARKer:FREQuency...................................................................................................................................................................36-3

MARKer:LEVel............................................................................................................................................................................36-3

TRACe..........................................................................................................................................................................................36-3

37 Status Subsystem

Status Subsystem - Status Byte..................................................................................................................................................... 37-3

CONDition....................................................................................................................................................................................37-7

ENABle......................................................................................................................................................................................... 37-7

[EVENt]........................................................................................................................................................................................37-7

NTRanistion..................................................................................................................................................................................37-7

PTRanistion...................................................................................................................................................................................37-8

PRESet..........................................................................................................................................................................................37-8

38 System Subsystem

SYSTem[:ERRor].........................................................................................................................................................................38-2

Contents-12

39 Tests Subsystem

COMMent1.........................................................................................................................................................................................5

COMMent2.........................................................................................................................................................................................5

CONFigure?........................................................................................................................................................................................5

EXECution:DESTination....................................................................................................................................................................6

EXECution:FAILure...........................................................................................................................................................................6

EXECution:HEADing1 ......................................................................................................................................................................7

EXECution:HEADing2 ......................................................................................................................................................................7

EXECution:RESults............................................................................................................................................................................8

EXECution:RUN ................................................................................................................................................................................9

FREQuency?.......................................................................................................................................................................................9

LIBRary? ..........................................................................................................................................................................................10

PARMameter?...................................................................................................................................................................................10

PROCedure:AUTOstart.....................................................................................................................................................................10

PROCedure:LOCation......................................................................................................................................................................11

PROCedure:NAME...........................................................................................................................................................................11

PROCedure:PRINt:CONFigure........................................................................................................................................................11

PROCedure:PRINt:FREQuency.......................................................................................................................................................11

PROCedure:PRINt:PARameter.........................................................................................................................................................12

PROCedure:PRINt:SEQuence..........................................................................................................................................................12

PROCedure:PRINt:SPEC.................................................................................................................................................................12

PROCedure:RUN..............................................................................................................................................................................12

SEQNumber?....................................................................................................................................................................................13

SPEC?...............................................................................................................................................................................................13

Contents

40 Trigger Subsystem

ABORt .......................................................................................................................................................................................... 39-4

ASTate...........................................................................................................................................................................................39-4

BETest...........................................................................................................................................................................................39-4

BETest:MODE.............................................................................................................................................................................. 39-5

DDEMod:ADJMode.....................................................................................................................................................................39-5

DDEMod:ASTate..........................................................................................................................................................................39-5

DDEMod:SOURce .......................................................................................................................................................................39-6

DELay...........................................................................................................................................................................................39-6

HTCH............................................................................................................................................................................................ 39-6

HTCH:ARFCn[:SPECiﬁc]............................................................................................................................................................ 39-7

HTCH:ARFCn:AUTO.................................................................................................................................................................. 39-7

[:IMMediate]................................................................................................................................................................................. 39-7

MODE[:DSP]................................................................................................................................................................................ 39-8

MODE:RETRigger....................................................................................................................................................................... 39-8

SOURce ........................................................................................................................................................................................ 39-9

UMEMory:SOURce .....................................................................................................................................................................39-9

UMEMory:STATus.....................................................................................................................................................................39-10

Appendix A - [:INUM] - Integer Numeric Fields Appendix B - [:FNUM] - Floating Point Numeric Fields

Commands ......................................................................................................................................................................................B-3

Contents-13

Contents

Appendix C - [:FNUM-MOD] - Floating Point Numeric (less MODE)

Commands ..................................................................................................................................................................................... C-3

Appendix D - [:MM] - Measurement Fields

Commands ..................................................................................................................................................................................... D-3

Appendix E - [:MM-MOD] - Measurement Fields (less UNITs, DUNits, AUNits)

Commands ......................................................................................................................................................................................E-3

Appendix F - [:AVG] - Measurement Fields Using Averaging

Commands ......................................................................................................................................................................................F-3

Appendix G - [:MET] - Measurement Fields Using Meters

Commands ..................................................................................................................................................................................... G-3

Appendix H - [:MULTI-B] - Measurement Fields Using Multi-Burst

Commands ..................................................................................................................................................................................... H-3

Contents-14

Command Guidelines

Rules and guidelines for using General Purpose Interface Bus (GPIB) programming are contained in this chapter. Chapters 3 and onwards outline each GPIB command subsystem used with the Agilent 8922M/S.

Each subsystem chapter starts with a syntax diagram followed by a simple explanation of each command within that subsystem.

1-1

Command Guidelines

Command Names

Generally all commands of greater than four characters havean alternate abbreviatedform using only the upper case letters and number (if used).

Upper or lower case characters may be used for all commands. For example, to set the amplitude of RF Generator 1, you could use any of the following

commands:

RFGENERATOR:AMPLITUDE1 -10DBM or RFGenerator:AMPLitude1 -10DBM rfgenerator:amplitude1 -10DBM or rfg:ampl1 -10DBM or RFG:AMPL1 -10DBM

Programming Format Conventions

Syntax commands and returned data descriptions use the following format conventions.

Upper case letters

Square brackets

Vertical bar |,indicatesthatone-and-only-oneitemseparatedbytheverticalbar can be used at any given

Question mark

Quoted string Fields that accept quoted string parameters will return the active choice in quotes when

Decimal numeric data

Floating numeric data

Indicate the shortened acceptable form of a command.

[ ], indicate that enclosed command or command parameters are optional.

time. The verticalbar is read as “or.”For example,‘A’ | ‘B’ indicates that either A or B can be chosen, but not both.

?, indicates a query command. Most commands accept this command when it is entered immediately after the command name. The returned information (<value>) varies in format according to the type of the ﬁeld.

queried. For example if the RF generator Output was set to the RF IN/OUT parameter (RFG:OUTP “RF IN/OUT”) and the queried (RFG:OUTP?), the return would be “RF IN/ OUT”.

Fields that accept decimal numeric data will return the current ﬁeld value as an exponentiated decimal number.

Fields that accept ﬂoating pointnumeric data will return thecurrent ﬁeld value as a ﬂoating point number in the current

Character data

GPIB units. Fields that accept character data (unquoted strings) will return the queried information

without quotes.

1-2

Command Guidelines

If you have Agilent Technologies 8922M/S Option 010

Quotation marks

“ ”, enclose command and string entries. Be sure to follow the correct syntax for using quotations that are speciﬁc to your basic language.

Colons :, are used to separate keywords and show hierarchical relationship.

”RFANalyzer:FREQuency 935 MHz”

A Semicolon and a Colon

;:, are used to separate two or more root level command statements on the same line.

”RFAN:INP ’RF IN/OUT’;:RFAN:AMPL1 −20 dBm”.

Semicolons ;, can also be used to condense command words on one line if the commands are equal, or

of decreasing hierarchy under the keyword. (The following example is equivalent to the previous command statement, but the root level keyword :RFAN is removed by using semicolons.)

”RFAN:INP ’RF IN/OUT’;AMPL1 −20 dBm”

Commas Are used to separate multiple parameter entries. Angle

< >, enclose variable items that represent user choices (parameters) to be entered.

brackets

If you have Agilent Technologies 8922M/S Option 010

If you have the Agilent 8922M/S Option 010 Multi-Band Test System, you will have access to some additional GPIB commands.

Refer to the Agilent 8922 Multi-Band User’s Guide for a full description of these commands. The additional commands are either part of a current subsystem or are part of the new Dual Band Control subsystem.

The Agilent 8922 Multi-Band User’s Guide gives a programming example of the Dual Band Control GPIB commands.

1-3

Command Guidelines

Units of Measure

Units for measurements

Units for settings These are implemented such that if a unit is not sent along with the

These are implemented such that a measurement query result will be returned in the current GPIB unit.

setting value, then a default GPIB unit is used.

• For example, RFGenerator:AMPLitude1 assumes dBm and RFGenerator:FREQuency assumes Hz. If a unit is sent with the setting, then this unit will be used. The GPIB unit may be changed using the units commands described later.

• Each measurement or setting description defines the allowable units for that field. When units are sent with a command, they should not be quoted.

The complete allowable set of GPIB units that setting queries or measurement queries may be returned in are:

• DB (dB), DBM (dBm), DBUV (dB micro-volt),

• DEG (degree), DIV (division),

• HZ (Hz), OHM (ohm), PCT (percent), PPM (parts-per-million),

• S (second), T (bit periods),

• V (volt), W (watts) The complete allowable set of units that can be sent with setting commands or units that can be displayed on the front panel are:

• DB (dB), DBM (dBm), DBMW (dB milli-watt), DBUV(dB microvolt),

• HZ (Hz), KHZ (kHz), MHZ (MHz), GHZ (GHz),

• T (bit periods), S (second), MS (milli-second), US (microsecond),

• V (volt), MV (millivolt), UV (microvolt),

• W (watts), MW (milliwatt),

• PCT (percent), PPM (parts-per-million),

• DEG (degree) DIV (division), OHM (ohm)

1-4

Measurement Subsystems

Measure Subsystem Commands

Measure commands are used to control measurements and get back the value of the displayed measurement. To get a valid measurement, the instrument must ﬁrst be set up to access the desired measurement.

In most cases, this means that you must be on the screen (or set of screens) associated with the measurement. For example, to retrieve Output RF Spectrum measurement results, you must be on the Output RF Spectrum ’Main’ screen or ’Trace’ screen. (See the DISPlay subsystem commands.) The Trigger commands are then used tocause a measurement to occur. Once a measurement result is available it may be queried.

Command Guidelines

Measurement Subsystems

Syntax Diagrams

Each GPIB Subsystem chapter starts with a syntax diagram. This diagram uses a graphical format to represent the hierarchical structure of a subsystem. The diagram also indicates possible options and references to other command sets.

The following describes two graphical conventions used in the syntax diagrams.

Means a space must be used as part of the command line. For example;

AFAN:AIN<space>‘GND’

Represents a colon in the command line.

AFAN:AIN ‘GND’

1-5

Command Guidelines

Optional Commands

The following lists the optional command groups that are used with many of the GPIB Command Subsystems. The list describes the abbreviation used for each optional set and its corresponding Appendix, that gives more details of the options available.

Optional

Command

Abbreviation

[:INUM] Appendix A Increment integer numeric ﬁelds [:FNUM] Appendix B Floating point numeric ﬁeld [:FNUM-MOD] Appendix C Floating point numeric ﬁeld without INCR:MODE [:MM] Appendix D Measurement ﬁelds [:MM-MOD] Appendix E Measurement ﬁelds without units commands [:AVG] Appendix F Measurement ﬁelds that use averaging [:MET] Appendix G Measurement ﬁelds that use meters [:MULTI-B] Appendix H Measurement ﬁelds that use Multi Burst measure-

Examples; RFGenerator:AMPLitude1 <real> | [:FNUM] When this command appears in a program it can be written as follows;

Reference Appendix

ments

RFG:AMPL1:UNITs? ................or

RFG:AMPL1:INCRement UP ..........or

RFG:AMPL1:INCR:MODE:LINear ......or

RFGENERATOR:AMPLITUDE1 -10DBM ...or RFG:AMPL1:INCRement:DUNits -1DBM

Description

1-6

Command Guidelines

Command Descriptions

Each command in this guide is given a description, an example of its syntax and possible options. These commands are shown as follows;

Command Name

Description This gives a brief description of what the command can be used for.

Some units that can be used with the command, are also listed.

Syntax This gives the syntax for the command. Each command is listed in

full, although the abbreviated version can also be used, as explained in “Command Names”.

Options These are not strictly optional parts of the command. They also list

necessary parts of the command. Refer to “Programming Format Conventions” for details on what is optional and what is necessary.

1-7

Command Guidelines

Output RF Spectrum Modulation Reference Measurement Averaging

The Agilent 8922M/S makes the modulation reference measurement of the Output RF Spectrum (ORFS) due to modulation test based on a single burst measurement. If you wish to comply with the GSM Recommendation 11.10, then the following information will be of interest.

The spectrum due to modulation portion of the GSM ORFS recommendation speciﬁes maximum levels of power, measured at given frequency offsets from the nominal carrier frequency, relative to a reference measurement at the carrier frequency. The recommendation calls for the reference measurement and all other measurements to be averaged over 200 bursts.

To get averaged ORFS due to modulation measurement results relative to an averaged reference as in GSM Recommendation 11.10, refer to the following example GPIB script:

!Make a single Modulation Reference measurement. OUTPUT Gpib;”MEASure:ORFSpectrum:POWer:AVERage:STATe OFF” OUTPUT Gpib;”MEASure:ORFSpectrum:POWer:REFerence:STATe OFF” OUTPUT Gpib;”TRIGger:MODE ‘SINGLE’” OUTPUT Gpib;”DISPlay:SCReen ORFS” OUTPUT Gpib;”DISPlay:ORFSpectum:VIEW ‘MAIN’” OUTPUT Gpib;”ORFSpectrum:MODE ‘MOD REF’” OUTPUT Gpib;”TRIGger:ASTate ‘ARM’”

!Make 200 modulation measurements at 0 kHz offset and average them. !This result is the correction factor to the single Modulation !Reference measurement done earlier. OUTPUT Gpib;”ORFSpectrum:MODE ‘MODULATN’” OUTPUT Gpib;”ORFSpectrum:FREQuency:OFFSet 0 KHZ” OUTPUT Gpib;”DISPlay:ORFSpectrum:VIEW ‘TRACE’” OUTPUT Gpib;”MEASure:ORFSpectrum:POWer:AVERage:VALue 200” OUTPUT Gpib;”MEASure:ORFSpectrum:POWer:AVERage:STATe ON” OUTPUT Gpib;”TRIGger:MODE ‘CONT’” WAIT 150

!The Agilent 8922M/S makes about 2 measurements per second. !The Agilent 8922S must be allowed about 1600 seconds. !This wait allows at least the needed 200 measurements !to occur for averaging per GSM Recommendations. OUTPUT Gpib;”MEASure:ORFSpectrum:POWer?” ENTER Gpib;Correction$ OUTPUT Gpib;”TRIGger:MODE ‘SINGLE’” OUTPUT Gpib;”MEASure:ORFSpectrum:POWer:AVERage:STATe OFF”

!Enter the correction factor as the Reference value ( REF SET ) for the !following measurements.

OUTPUT Gpib;”MEASure:ORFSpectrum:POWer:REFerence:VALue ”&Correction$ OUTPUT Gpib;”MEASure:ORFSpectrum:POWer:REFerence:STATe ON” OUTPUT Gpib;”MEASure:RESet”

!The ORFS Modulation measurement is now ready for use. !Do not forget to use averaging.

1-8

GPIB Tutorial and Examples

This Chapter introduces the user to automatic GSM mobile phone testing using the Agilent 8922M and Agilent 8922S GSM Test Set. GPIB (IEEE 488.2) is used in conjunction with BASIC programming exercises and example programs to illustrate the most effective techniques for efﬁcient and high speed phone tests.

2-1

GPIB Tutorial and Examples

GPIB Programming Exercises

Before Starting

Power-up the Agilent 8922M/S and carry out the following checks before beginning the exercise:

❒ On the rearpanel, the OPT 001 REF OUT should be connected with ashort BNC cable

to the REF IN connector.

❒ Use the front panel knob to select the CONFIG screen. Check the Compatible field is

set to 8922M or 8922S.

❒ On the CONFIG screen, set the GPIB address to 14 and check the GPIB mode is set to

talk&lstn.

❒ Connect the GPIB cable from your computer to the Agilent 8922M/S. ❒ Load a Test SIM (Subscriber ID Module) in the mobile. ❒ Connect a GSM mobile to the Agilent 8922M/S front panel RF IN/OUT connector.

Carry out the following programming exercises, check your program works after each exercise.

2-2

GPIB Tutorial and Examples

Exercise A - Establishing a Link

Originate a Call

Begin the program by setting the GPIB address variable Uut=714, then select commands from section “GPIB Commands Used in Exercises” to carry out the following actions:

❒ Preset the Agilent 8922M/S and set up the paging IMSI and external cable loss, zero

the power meter.

❒ Page the mobile. ❒ Establish a program loop to wait for the mobile to answer the call. ❒ End the loop when the mobile answers or when too much time has elapsed.

Tips:

The BASIC REPEAT UNTIL loop is useful in this application. The loop can be used to keep checking the Agilent 8922M/S call status until the returned variable becomes equal to “CONNECTED” or a time-out counter is exceeded. Place a WAIT 1 statement inside the loop so that the Agilent 8922M/S call status is checked once per second. For more help, look at the ‘PAGE THE MOBILE AND ESTABLISH A CALL’ section of example program 1 in section “Example Programs”.

End the Call

Add additional lines to your program to end the call. Select the GPIB commands from “GPIB Commands Used in Exercises” and use the same structure as for call set up. This time, wait for the status to become equal to “INACTIVE”.

Tips:

For help, look at the “END THE CALL” section of example program 1 in section “Example Programs”.

2-3

GPIB Tutorial and Examples

Example B - Controlling the Mobile

Mobiles need to be tested on a variety of frequency channels (ARFCN) and transmitter power levels (TX Level). The Agilent 8922M/S uses over-the-air signalling to command the mobile to any ARFCN or TX Level. ARFCN changes can be made using channel assignments, with the signalling taking place over the GSM Fast Associated Control Channel (FACCH). TX Level changes are signalled using the GSM Slow Associated Control Channel (SACCH). The choice of FACCH or SACCH has been made by the GSM speciﬁcations.

Before extending your program to control the mobile, press the LOCAL key on the Agilent 8922M/S and manually establish a call with the mobile. In the MOBILE PHONE section of the Cell Control screen, use the knob to select TX Level. Using the arrow keys, quickly change the TX Level from 15, to 14, to 13, to 12, to 10, to 9, to 8, to 7, to 6, to 5 and back down to 15. Notice the mobile’s uplink SACCH reports of TX Level in the CELL STATUS area of the screen. Notice also the Peak Power measurement in the centre of the screen. Observe the sequence of events, ﬁrst you command a new TX Level, about 1 second later, the mobile changes its output power, and shortly after, conﬁrms the new TX Level on the uplink SACCH, to be displayed on the Agilent 8922M/S.

The sequence for ARFCN changes is similar. Because channel assignments use the FACCH, the process happens more quickly. There is still a perceptible delay from the channel change being commanded, by changing the Channel value under MOBILE PHONE, to the TRAFFIC Channel value being conﬁrmed under CELL STATUS.

TX Level Changing

Extend your program, selecting GPIB commands from section “GPIB Commands Used in Exercises”, to cycle the mobile’s TX Level from 5 to 15 with the following steps:

❒ Establish call as in exercise A. ❒ Set up a loop to count through the TX Levels. ❒ Command the phone to the new TX Level. ❒ Check the reported TX Level, loop until the reported value matches the programmed

value, or too much time has elapsed.

❒ Repeat for the next TX Level. ❒ End call as in Exercise A.

2-4

GPIB Tutorial and Examples

Example B - Controlling the Mobile

Tips:

The BASIC FOR NEXT loop is ideal for controlling the TX Levels. For example, startthe loop with FOR Txlevel = 5 TO 15 and end with NEXT Txlevel. Use a REPEAT UNTIL structure to check the reported TX Level. This time, use a delay of WAIT 0.4. For more help, look at the ‘PERFORM FAST POWER MEASUREMENTS’ section of example program 1 in section “Example Programs”.

ARFCN Changing

Once your program is working, add another FOR NEXT loop outside the Txlevel loop to change ARFCN from 1, to 63, to 124. The new program will cycle the mobile from TX Level5 to 15 at ARFCN 1, then from 5 to 15 on ARFCN 63, then from 5 to 15 on ARFCN

124. Add a PRINT statement to display the ARFCN and TX Level. The ﬂow of the mobile control part of the program will be as follows:

❒ Establish call as in exercise A. ❒ Set up a loop to count through three ARFCN. ❒ Command the phone to the new ARFCN. ❒ Check the reported ARFCN, loop until the reported value matches the programmed

value, or too much time has elapsed.

❒ Set up a loop to count through the TX Levels. ❒ Command the phone to the new TX Level. ❒ Check the reported TX Level, loop until the reported value matches the programmed

value, or too much time has elapsed.

❒ Print the ARFCN and TX Level. ❒ Repeat for the next TX Level. ❒ Repeat for the next ARFCN. ❒ End call as in Exercise A.

Tips:

Use a REPEAT UNTIL loop as before to check for conﬁrmation of the mobile’s channel change, this time use a WAIT 0.1 inside the loop. It may be helpful to use an array to hold the ARFCN. For example Arfcnar(1)=1, Arfcnar(2)=63, Arfcnar(3)=124, then FOR X=1 TO 3 and Arfcn=Arfcnar(X). For more help, look at the ‘PERFORM FAST POWER MEASUREMENTS’ section of example program 1 in section “Example Programs”.

2-5

GPIB Tutorial and Examples

Example C - Making Measurements

In this section we ﬁrst add a TX Power measurement, then modulation accuracy and receiver sensitivity tests.

TX Power Measurement

TX peak power is measured using the Fast TX Carrier Power measurement. This measurement can take place in parallel with GSM signalling operations such as ARFCN or TX Level changes. TX peak power is normally displayed on the Cell Control screen. The Agilent 8922M/S RF Analyser automatically adjusts its input attenuation and gain to match the power expected from the mobile. The Expected Input power is displayed at the bottom of the Cell Control screen. This expected power provides a convenient comparison with the measured power. For a perfect mobile, the expected and measured values are the same. Select GPIB commands from section “GPIB Commands Used in Exercises” to query the measured and expected power and insert them immediately before the PRINT statement in your program. Modify the PRINT statement to display ARFCN, TX Level, Expected Power and Measured Power. The program ﬂow should be as follows:

value, or too much time has elapsed.

❒ Set up a loop to count through the TX Levels. ❒ Command the phone to the new TX Level. ❒ Check the reported TX Level, loop until the reported value matches the programmed

value, or too much time has elapsed.

❒ Query the Fast TX Carrier Power (TX Peak Power). ❒ Query the RF Analyser Expected Input. ❒ Print the ARFCN, TX Level, Expected Power, Measured TX Peak Power. ❒ Repeat for the next TX Level. ❒ Repeat for the next ARFCN. ❒ End call as in Exercise A.

2-6

GPIB Tutorial and Examples

Example C - Making Measurements

Tips:

For help, look at the “PERFORM FAST POWER MEASUREMENT” section of example program 1.

DSP Measurements

Modulation accuracy for GSM is determined by measuring the phase and frequency error. The Agilent 8922M/S uses its DSP analyser for making this measurement. When triggered, the DSP analyser samples a single GSM TDMA burst and performs several measurements in parallel namely: peak phase error, rms. phase error, frequency error, power versus time, data bit display, burst timing and TX peak power. The DSP analyser shares measurement hardware with the Agilent 8922M/S real-time demodulator. The hardware can be switched from one mode to another, either making measurements or demodulating. The demodulator is used to decode the trafﬁc channel and control channel data being transmitted by the mobile on the up-link. This control information includes the FACCH and SACCH used for changing ARFCN and TX Level. For this reason, different techniques are used for ARFCN and TX Level changing while performing DSP measurements.

TX Level changes are signalled on the down-link SACCH. When the level change is complete, the mobile signals the new TX Level on the up-link SACCH. The Agilent 8922M/S does not need to decode this message for the level change to operate correctly. For TX Level changes, the DSP analyser can remain conﬁgured for measurements and does not need to re-conﬁgured for demodulation. However, the up-link SACCH reports, used in our program to conﬁrm the TX Level change, are not being demodulated and so are not available to read.

ARFCN changes are signalled using the FACCH. In order for the channel assignment to work correctly,a two-way exchange of messages has to take place between the mobile and the Agilent 8922M/S. This requires the DSP analyser to be conﬁgured for demodulation. When an ARFCN change is requested during a DSP measurement, the DSP analyser is automatically re-conﬁgured for demodulation, the channel assignment is performed, once complete, the DSP analyser is conﬁgured for measurements once more.

Single trigger mode is most suitable for DSP measurements over GPIB. ARFCN changes can be accomplished simply by programming the new ARFCN and triggering the DSP measurement. The measurement will begin only once the channel change has been completed. TX Level changes are accomplished by programming the new TX Level then triggering the DSP measurement. Since the DSP measurement takes 200 to 300 milliseconds to be initialised and sample a TDMA burst, there is a reasonable probability that in many cases the mobile will have changed level in time for the ﬁrst measurement. Checking the measured TX power is close to the expected power provides conﬁrmation that the TX Level change has been performed. If the measured power is different from the expected power, the DSP measurement can be performed up to two additional times. The time taken for three DSP measurements exceeds the time allowed for a mobile to make a TX Level change.

2-7

GPIB Tutorial and Examples

Example C - Making Measurements

Select commands from section “GPIB Commands Used in Exercises” to create the following program ﬂow:

❒ Select single trigger mode for DSP measurements. ❒ Establish call as in exercise A. ❒ Perform TX peak power test on channels 1, 63, 124, levels 5 to 15 with code from

exercise B and C.

❒ Display the DSP analyser phase and frequency error screen. ❒ Set up a loop to count through three TX Levels: 5, 10 and 15. ❒ Command the phone to the new TX Level. ❒ Set up a loop to count through three ARFCN: 1, 63, 124. ❒ Command the phone to the new ARFCN. ❒ Trigger a DSP measurement. ❒ Query the peak phase error and rms. phase error. ❒ Query the frequency error and TX peak power. ❒ Query the RF analyser expected input. ❒ Compare measured and expected power, loop to trigger DSP measurement if they are

more than 1dB different. Loop a maximum of three times.

❒ Print the ARFCN, TX Level, Peak and Rms. Phase Error and Frequency Error. ❒ Repeat for the next ARFCN. ❒ Repeat for the next TX Level. ❒ Return to the Cell Control screen. ❒ End call as in exercise A.

Tips:

Placing the TX Level changing loop outside the ARFCN changing loop has several beneﬁts. The process of changing ARFCN is faster, so the program will run more quickly. The delay associated with the ﬁrst ARFCN change will go in parallel with the time taken for the mobile to respond to the SACCH and change TX Level. This increases the probability of the mobile being settled on the new TX Level when the DSP measurement is performed, reducing the number of times it will need to be repeated to get a TX peak power value close to the expected value. Look at the ‘PERFORM DSP MEASUREMENTS’ section of example program 1 for more help.

2-8

GPIB Tutorial and Examples

Example C - Making Measurements

Receiver Sensitivity Test

Bit Error Ratio (BER) is the primary measure of GSM receiver sensitivity. For a handheld mobile, the residual type II BER should be less than 2.4% at -102dBm. For most mobile testing, the downlink power will be maintained at a relatively high level of around

-80dBm. This level is dropped to -102dBm to perform the BER test, then increased again to -80dBm once the test is complete. When the mobile’s receiver input level drops from

-80 to -102dBm, its receiver AGC compensates by increasing gain. The AGC time constant varies from mobile to mobile. It can take several seconds for the receiver to adjust to the new power level and be ready for BER testing. If the level change is large and followed by a channel assignment, the mobile will often drop the call because its receiver is not able to decode the FACCH while adjusting to the reduced input power.

Select GPIB commands from "GPIB Commands Used in Exercises" to extend your program as follows:

❒ Select single trigger mode for DSP measurements ❒ Select single trigger mode for BER measurements ❒ Establish call as in exercise A ❒ Perform TX peak power test on channels 1, 63, 124, levels 5 to 15 with code from

exercise B and C

❒ Perform DSP measurements with code from exercise C ❒ Display the bit error test screen ❒ Reduce the RF Generator power to -102dBm ❒ Wait 2 seconds for the mobile’s AGC to settle ❒ Set up a loop to count through three ARFCN: 1, 63, 124 ❒ Command the phone to the new ARFCN ❒ Trigger a BER measurement ❒ Query the BER ❒ Repeat for the next ARFCN ❒ Increase the RF Generator power to -80dBm ❒ Return to the Cell Control screen ❒ End call as in exercise A

2-9

GPIB Tutorial and Examples

Example C - Making Measurements

Tips:

Experiment with shorter AGC settling times, notice the reported BER increase. Try increasing the RF Generator power to -40dBm at the start of the program and removing the wait statement. Does the phone drop the call? The required delay depends on the mobile and the size of the level change. Look at the mobile’s SACCH reports of RXQual and RXLev. Consider modifying your program to use these reports to decide when the mobile’s AGC has settled. Look at the “PERFORM BIT ERROR MEASUREMENTS” section of example program 1 for more help.

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GPIB Tutorial and Examples

Example D - Adding Robustness

There are several additions which can be made to your program to increase its robustness:

❒ Check input power falls within +/-3dB specified analyser range ❒ Check DSP measurement status ❒ Check for Agilent 8922M/S error logs ❒ Provide a time-out for any measurements which do not complete

These checks add little value to a program designed to test phones which are known to meet speciﬁcation. In many cases the mobile being tested will be out of speciﬁcation, the phone may fail toproduce a burst at thecorrect power and frequency forthe DSP analyser. If the measurement has been triggered, and no input signal is provided, an GPIB time-out offers a convenient method for dissarming the DSP trigger and continuing the program. If the mobile’s TX power falls outside +/-3dB of the expected value, measurement results may not be valid. If the DSP analyser has not been able to ﬁnd a good signal, or synchronise to the burst midamble, the status message will warn of the problem. Dropped calls and other problems are logged by the Agilent 8922M/S in an error message stack. The messages can be queried to provide an indication of where problems have occurred during test execution.

Read through example program 1 and look at the way the GPIB commands in "GPIB Commands Used in Exercises" have been used to add robustness. Look for the “ERROR AND TIMEOUT HANDLING” part of the program and the sections making DSP measurements.

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GPIB Tutorial and Examples

Example E - Faster Testing

Load and run example program 1, thenprogram 2, thenprogram 3, or look at the test times tabulated in section 4 for the Agilent 8922M. The three programs are conﬁgured to perform an identical list of tests, yet their test times are different. This is achieved using various techniques.

Example program 1 does use some techniques to improve speed:

❒ The complete set of DSP measurements are performed in parallel. ❒ TX peak power measurements are made in parallel with DSP measurements. ❒ Additional TX peak power measurements are made using the Fast TX Carrier Power

measurement. Points covered during the DSP test are not repeated.

❒ Loops are chosen to minimise the number of mobile TX level changes. ❒ No fixed delays are used. ❒ RXQual, RXLev and TX Timing error are checked in parallel with bit error ratio. ❒ Results are printed after testing is complete.

Example program 2 adds some additional time saving techniques:

❒ A hopped call is used for TX measurements to reduce channel changing time. ❒ Measured power is usedto determine when the mobileTX Level has settled ratherthan

waiting for uplink SACCH report.

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GPIB Tutorial and Examples

Example E - Faster Testing

Example program 3 uses the Agilent 8922M/S Aux RF Out port to simulate a mobile operating in a test mode. Mobiles controlled in test modes react much faster to channel and TX Level change commands.

❒ Delays associated with the GSM SACCH and FACCH are removed. ❒ Measurements are made with no signalling overhead time.

The time savings made in programs 2 and 3 have been almost completely during the TX part of the test. Improving the RX bit error ratio test time would speed-up each of the programs. As TX test times reduce, RX tests appear to take up a larger percentage of the overall test time. Techniques for improving RX measurement times include:

❒ Take RXQual as a first indication of receiver performance. Perform bit error test only

if RX Qual is poor.

❒ Reduce the number of bits being tested and reduce the signal level from -102dBm to a

lower level. This will increase the number of bit errors in the reduced measurement period to maintain a statistically valid test.

❒ Look for zero bit errors at -102dBm over a reduced number of bits. Use a longer

measurement only if bit errors are detected.

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GPIB Tutorial and Examples

GPIB Commands Used in Exercises

Commands used in exercise A:

Preset the instrument

OUTPUT Uut;”*RST”

Set the paging IMSI

OUTPUT Uut;”MSINFO:PAGING:IMSI ‘001012345678901’”

Enter an external cable loss offset of 1dB

OUTPUT Uut;”CONF:OFL:RFIN “;-1

Set external loss offset mode on

OUTPUT Uut;”CONF:OFL:MODE ‘ON’”

Zero the power meter

OUTPUT Uut;”CW:PMZERO”

Page the mobile

OUTPUT Uut;”CELL:CALL:ORIGINATE”

Query the call status

OUTPUT Uut;”CELL:CALL:STATUS:STATE?”

ENTER Uut;Status$

End the call

OUTPUT Uut;”CELL:CALL:END”

Commands used in exercise B:

Program the mobile TX Level

OUTPUT Uut;”CELL:MS:TLEV”;Txlevel

Query the mobile’s reported TX Lev

OUTPUT Uut;”MEAS:CELL:SACCH:TLEV?”

ENTER Uut;Sacchtxlev

Prgram the mobile’s Trafﬁc Channel ARFCN

OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Arfcn

Query the reported ARFCN

OUTPUT Uut;”CELL:CALL:STAT:TCH:ARFCN?”

ENTER Uut;Faccharfcn

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GPIB Tutorial and Examples

GPIB Commands Used in Exercises

Commands used in exercise C:

Query Fast TX Carrier Power (TX Peak Power)

OUTPUT Uut;”MEAS:FTCP:POW?” ENTER Uut;Txpkpwr

Query RF Analyzer Expected Input Amplitude

OUTPUT Uut;”RFAN:AMPL1?” ENTER Uut;Exppwr

Set the DSP Analyzer to single trigger mode

OUTPUT Uut;”TRIG:MODE ‘SINGLE’”

Display the DSP Analyzer (default sub-screen is phase and frequency error)

OUTPUT Uut;”DISP DSP”

Trigger a DSP measurement

OUTPUT Uut;”TRIG:AST ‘ARM’”

Querry the rms phase error

OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:RMS?” ENTER Uut;Rmsphase

Query peak phase error

OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:PEAK?” ENTER Uut;Pkphase

Query frequency error

OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:FREQUENCY?” ENTER Uut;Freqerr

Query TX peak power

OUTPUT Uut;”MEASURE:DSPANALYZER:PTCP?” ENTER Uut;Txpkpwer

Display the Cell Control screen

OUTPUT Uut;”DISP CELL1”

Set single trigger mode for bit error measurements

OUTPUT Uut;”TRIG:BET ‘SINGLE’”

Display the bit error test screen

OUTPUT Uut;”DISP:SCR BER1”

Program the RF Generator power

OUTPUT Uut;”RFG:AMPL1 “;Berpower

Trigger a bit error measurement

OUTPUT Uut;”TRIG:BET:MODE ‘RUN’”

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GPIB Tutorial and Examples

Example Programs

Query the completed bit error test result

OUTPUT Uut;”MEAS:BET:BERR:RATIO1?”

ENTER Uut;Berppm

Reset the SACCH reports

OUTPUT Uut;”MEAS:CELL:SACCH:RESET”

Query the RXQual report (-1 returned if no report yet)

OUTPUT Uut;”MEAS:CELL:SACCH:PARTIAL:RQU?”

ENTER Uut;Rxqual

Commands used in exercise D:

OUTPUT Uut;”MEASURE:DSPANALYZER:SSTATUS?”

ENTER Uut;Sstatus$

Check for logged Agilent 8922M/S system errors

OUTPUT Uut;”SYSTEM:ERROR?”

ENTER Uut;Systemerr$

Example Programs

Speed Comparison

Using the Agilent 8922M GSM MS Test Set

Program 1 Program 2 Program 3

Time for testing 85.5 sec. 42.7 sec.

Time for call clear down 1.1 sec. 1.1 sec. 1.1 sec.

a.Some time overhead was incurred because the Agilent 8922M was being used to emulate a mobile in test mode. Reduced test times would be possible if the instrument was only performing measurements.

64.6 sec.

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GPIB Tutorial and Examples

Example Programs

Test List

Tx Tests

ARFCN Tx Levels

Tx Power 1, 65, 124 5, 6, 7, 8, 9, 10, 11, 12, 13,

14, 15 Peak and rms phase error 1, 65, 124 5, 10, 15 Frequency error 1, 65, 124 5, 10, 15 Power versus time 1, 65, 124 5, 10, 15

Rx Tests

ARFCN Downlink Power

Residual Type II BER 10,000

bits Rx Qual Rx Lev 1, 65, 124 -102 dBm MS Timing 1, 65, 124 -102 dBm

a.Up to four BER measurements can be performed in parallel with no added test time.

1, 65, 124 -102 dBm

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GPIB Tutorial and Examples

Sample Output

Answer call when mobile rings Results from Fast Power Measurement ARFCN TXLEV POWER dBm 1 6 31.87 1 7 29.95 1 8 27.77 1 9 25.81 1 11 20.21 1 12 18.21 1 13 16.24 1 14 14.3 65 6 31.51 65 7 29.63 65 8 27.54 65 9 25.59 65 11 20.01 65 12 20.04 65 13 18.05 65 14 16.01 124 6 31.1 124 7 29.32 124 8 27.33 124 9 25.37 124 11 21.5 124 12 19.85 124 13 17.85 124 14 15.77

Results from Power, Power vs Time & Modulation Measurements

ARFCN TXLEV POWER dBm Pk & RMS PHASE FREQ ERROR MASK 1 5 33.69 10.89 4.554 1.8 “Passed” 1 10 23.76 10.14 4.362 36 “Passed” 1 15 14.27 11.84 4.636 .6 “Passed” 65 5 33.35 11.39 4.29 -2.4 “Passed” 65 10 23.57 11.3 4.444 18.3 “Passed” 65 15 14.12 14.22 4.741 -2.3 “Passed” 124 5 32.89 14.68 4.636 30.9 “Passed” 124 10 23.36 14.41 4.911 -18.1 “Passed” 124 15 13.81 11.95 4.905 -20 “Passed”

Results from BER Test

ARFCN Downlink dBm BER1% RxQual RxLev TIMERR 1 -102 .03945 0 8 0 65 -102 .2251 0 8 0 124 -102 .1157 0 9 .25

Time for phone to camp and answer page: 11.21 Seconds. Time for testing : 46.52 Seconds. Time for call clear down : 2.05 Seconds.

No Errors Would you like to test again? (y or n)

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GPIB Tutorial and Examples

Program 1

10 !RE-STORE “PROG1” 20 !RE-SAVE “PROG1:,1404” 30 !=========================================================================== 40 ! 50 !Example program 1 60 ! 70 !Introductory GPIB techniques for measuring a GSM900 mobile using the Agilent 8922S and M 80 !GSM MS Test Sets. The program measures Tx power, power vs time, phase and frequency 90 !error, bit error ratio, timing error, Rx Lev and Rx Qual 100 ! 110 !(c) Agilent Technologies 1996 120 ! 130 !Rev 1.0 140 !I R HP QMD 7.9.94 150 !Slightly modified by C B 24.1.96 - Changed F/H to M/S throughout 160 !================================================================================= 170 ! 180 DIM Berpwr(5) !Downlink power levels in dBm for bit error test 190 DIM Berarfcn(125) !ARFCN to perform bit error test on 200 DIM Dsppwr(15) !Mobile Tx power levels for DSP test 210 DIM Dsparfcn(124) !ARFCN to perform DSP test on 220 DIM Fparfcn(124) !ARFCN to perform fast power test on 230 DIM Fppwr(15) !Mobile Tx power levels for fast power test 240 DIM Message$(30)[100] !Output strings 250 DIM Error$(50)[100] !Error message strings 260 DIM Err$[100] !Internally used temporary error string 270 DIM Rmspher(50,50) !Measurement results from rms phase error, dimensions(ARFCN,TXLEVEL) 280 DIM Pkpher(50,50) !Measurement results from peak phase error 290 DIM Frer(50,50) !Measurement results from freq error 300 DIM Slpwr(50,50) !Measurement results from DSP analyzer power measurement 310 DIM Txtim(50,50) !Tx timing error measurement results 320 DIM Fpwrmeas(50,50) !Measurement results from fast power 330 DIM Ber1(50,50) !Bit error test measurement results, dimensions(ARFCN,Downlink Power) 340 DIM Clock(5) !Test Times 350 DIM Mask$(50,50)[10] !Power versus time limit mask specification 360 DIM Rxqual(50,50) !RxQual measurement results, dimensions(ARFCN,Downlink Power) 370 DIM Rxlev(50,50) !RxLev measurement results 380 DIM Null(50,50) !Empty array 390 DIM Nullst$(50,50)[50] !Empty string array 400 ! 410 !======================================================= 420 ! 430 !GENERAL MEASUREMENT SET UP SPECIFIED 440 ! 450 Uut=714 GPIB address of Agilent 8922M/S 460 Extloss=-1 !Loss of cable linking 8922 to mobile (loss=-xdB) 470 Bchpwr=-80 !BCCH power level in dBm 480 Imsi$=”’001012345678901’” !Paging IMSI of mobile’s test SIM 490 Timeouttime=20 !The GPIB timeout in seconds 500 Leveltol=1 !Level threshold to indicate Tx Lev settling for DSP measurement 510 ! 520 !================================================================================ 530 ! 540 !MEASUREMENT POINTS ARE DEFINED IN THIS SECTION

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GPIB Tutorial and Examples

Program 1

550 ! 560 !Bit error ratio test 570 ! 580 Numberpwr=1 !The number of downlink power levels for bit error test 590 Berpwr(1)=-102 !The power level in dBm of the first downlink power.

Etc....

600 Bits1=10000 !The number of bits to test at each ARFCN/Power combination 610 Numberarfcn=3 !The number of ARFCN for bit error test

620 Berarfcn(1)=1 !The value of the first ARFCN. Etc....

630 Berarfcn(2)=65 640 Berarfcn(3)=124 650 ! 660 !DSP measurememnts 670 ! 680 Numdsppwr=3 !The number of mobile TX Levels for DSP test 690 Dsppwr(1)=5 !The value of the first TX Level. Etc... 700 Dsppwr(2)=10 710 Dsppwr(3)=15 720 Numdsparfcn=3 !The number of ARFCN for DSP test

730 Dsparfcn(1)=1 !The value of the first ARFCN. Etc....

740 Dsparfcn(2)=65 750 Dsparfcn(3)=124 760 ! 770 !Fast Power measurements 780 ! 790 Numfppwr=8 !The number of mobile TX Levels for fast power test

800 Fppwr(1)=6 !The value of the first TX Level. Etc....

810 Fppwr(2)=7 820 Fppwr(3)=8 830 Fppwr(4)=9 840 Fppwr(5)=11 850 Fppwr(6)=12 860 Fppwr(7)=13 870 Fppwr(8)=14 880 Numfparfcn=3 !The number of ARFCN for fast power test 890 Fparfcn(1)=1 !The value of the first ARFCN. Etc... 900 Fparfcn(2)=65 910 Fparfcn(3)=124 920 ! 930 !=========================================================================== 940 ! 950 !PRINT MESSAGES ARE DEFINED BELOW 960 ! 970 Message$(1)=”Answer call when mobile rings” 980 Message$(2)=”Would you like to test again? (y or n)” 990 Message$(3)=”Results from Fast Power Measurement” 1000 Message$(4)=”ARFCN TXLEV POWER dBm” 1010 Message$(5)=”Results from Power, Power vs Time & Modulation Measurements” 1020 Message$(6)=”ARFCN TXLEV POWER dBm Pk & RMS PHASE FREQ ERROR MASK” 1030 Message$(7)=”Results from BER Test” 1040 Message$(8)=”ARFCN Downlink dBm BER1% RxQual RxLev TIMERR” 1050 Message$(9)=” Seconds.” 1060 Message$(10)=”Time for phone to camp and answer page: “ 1070 Message$(11)=”Time for testing : “ 1080 Message$(12)=”Time for call clear down : “ 1090 ! 1100 Emptyst$=”@” 1110 Empty=-999 1120 Nullst$(1,1)=Emptyst$ 1130 Null(1,1)=Empty 1140 ! 1150 !==================================================================================== 1160 ! 1170 !ERROR AND TIMEOUT HANDLING 1180 !

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GPIB Tutorial and Examples

Program 1

1190 Busport=INT(Uut/100) !Get the GPIB port code from Uut address 1200 CLEAR Busport !Clear bus from any aborted previous commands 1210 Timeinit$=”yes” !Set a flag so timeout code is not executed first pass 1220 ON TIMEOUT Busport,Timeouttime GOTO Timeflag !Establish goto flag for HPIB timeouts 1230 Timeflag:IF Timeinit$<>”yes” THEN !After a timeout, execution comes here 1240 OFF TIMEOUT Busport 1250 CLEAR Busport !Clear any half done commands 1260 OUTPUT Uut;”TRIG:AST ‘disarm’” !Dissarm the DSP trigger 1270 CALL Sub_syserror(Uut,Error$(*),Errcount) !Gather any error message from the Agilent 8922M/S 1280 PRINT “Measurement Timed Out. Ending Test” 1290 IF Errcount=0 THEN 1300 Errcount=1 1310 Error$(1)=”No errors recorded” 1320 END IF 1330 FOR X=1 TO Errcount !Print error messages 1340 PRINT Error$(X) 1350 NEXT X 1360 STOP !Execution stops here after critical errors 1370 ELSE 1380 Timeinit$=”no” !Reset flag so next time, it must be a real timeout 1390 END IF 1400 Errcount=0 1410 CALL Sub_syserror(Uut,Error$(*),Errcount) !Clear any old errors from Agilent 8922M/S before the 1420 Errcount=0 !test begins 1430 ! 1440 !================================================================================= 1450 ! 1460 !PRESET THE Agilent 8922M/S AND SET IT TO THE CORRECT COMPATIBILITY MODE (executed once only) 1470 ! 1480 ! 1490 OUTPUT Uut;”*RST” !Preset the Agilent 8922M/S 1500 OUTPUT Uut;”CONF:COMP?” !Check compatability mode and set to F or H 1510 ENTER Uut;Product$ 1520 IF Product$<>”””8922S””” AND Product$<>”””8922M””” THEN 1530 IF Product$=”””8922E””” THEN OUTPUT Uut;”CONF:COMP ‘8922S’” 1540 IF Product$=”””8922G””” THEN OUTPUT Uut;”CONF:COMP ‘8922M’” 1550 OUTPUT Uut;”*RST” !A preset is needed after compatability change 1560 END IF 1570 CALL Sub_syserror(Uut,Error$(*),Errcount) !Check for any errors logged by HP 8922M/S 1580 ! 1590 !=========================================================================== 1600 ! 1610 !SET THE Agilent 8922M/S INITIAL CONDITIONS (executed once only) 1620 ! 1630 ! 1640 OUTPUT Uut;”MSINFO:PAGING:IMSI “&Imsi$ !Set the paging IMSI 1650 OUTPUT Uut;”CONF:OFL:RFIN “;Extloss !Set the external cable loss 1660 OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Dsparfcn(1) !Set the ARFCN to the first expected test point 1670 OUTPUT Uut;”CELL:MS:TLEV “;Dsppwr(1) !Set the mobile Tx Level to the first test point 1680 OUTPUT Uut;”CONF:OFL:MODE ‘ON’” !Turn external offset mode ON to use cable loss 1690 OUTPUT Uut;”CW:PMZERO” !Zero the power meter

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GPIB Tutorial and Examples

Program 1

1700 OUTPUT Uut;”RFG:AMPL1 “;Bchpwr !Set the downlink power for normal signalling 1710 OUTPUT Uut;”TRIG:MODE ‘SINGLE’” !Set the DSP meas trigger to single trig mode 1720 OUTPUT Uut;”TRIG:BET ‘SINGLE’” !Set bit error meas trigger to single trig mode 1730 OUTPUT Uut;”BET:BITS1 “;Bits1 !Set the number of bits to be measured for bit error 1740 OUTPUT Uut;”DISP:SCR DSP” !Display the DSP amplitude main screen to enter limits 1750 OUTPUT Uut;”DISP:SCR:DSP:VIEW ‘AMPL MAIN’” !for power versus time mask 1760 DATA -40,-28,-18,-10,0,180,360,542.769,547.769,552.769,560.769,570.769 !Mask corner times in us 1770 DATA -36,-30,-6,4,1,1,1,1,1,-6,-30,-36 !Upper limits in dB 1780 DATA -60,-60,-60,-60,-1,-1,-1,-1,-60,-60,-60,-60 !Lower limits in dB 1790 FOR X=1 TO 12 1800 READ Masktim !Reas corner times from DATA statement 1810 Masktim=Masktim/1.E+6 !Convert seconds 1820 Num$=VAL$(X) !Convert index to string for GPIB 1830 OUTPUT Uut;”DSP:AMPL:”&”time”&Num$&” “;Masktim !Output marker times 1840 NEXT X 1850 FOR X=1 TO 12 1860 READ Maskup !Read and output upper limits 1870 Num$=VAL$(X) 1880 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:HLIM “;Maskup 1890 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:HLIM:STATE ON” 1900 NEXT X 1910 FOR X=1 TO 12 1920 READ Masklo !Read and output lower limits 1930 Num$=VAL$(X) 1940 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:LLIM “;Masklo 1950 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:LLIM:STATE ON” 1960 NEXT X 1970 ! 1980 !=============================================================================== 1990 ! 2000 !ESTABLISH A LOOP TO BE EXECUTED EACH TIME A MOBILE IS TESTED 2010 ! 2020 ! 2030 Run$=”yes” !Flag for REPEAT loop 2040 REPEAT 2050 Clock(1)=TIMEDATE !Start a test time clock for call set up 2060 ! 2070 !============================================================================= 2080 ! 2090 !PAGE THE MOBILE AND ESTABLISH A CALL 2100 ! 2110 ! 2120 OUTPUT Uut;”DISP:SCR CELL1” !Display the cell control screen 2130 PRINT Message$(1) !Output answer call message 2140 OUTPUT Uut;”CELL:CALL:ORIGINATE” !Page mobile Agilent 8922M/S org call 2150 Time=0 !Set counter for mobile to answer 2160 Maxtime=100 2170 REPEAT 2180 Time=Time+1 2190 WAIT 1

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GPIB Tutorial and Examples

Program 1

2200 OUTPUT Uut;”CELL:CALL:STATUS:STATE?” !Check the call status for connected 2210 ENTER Uut;Status$ 2220 UNTIL Status$=”””CONNECTED””” OR Time>Maxtime 2230 IF Time>Maxtime THEN 2240 Errcount=Errcount+1 2250 Error$(Errcount)=”Call could not be established” 2260 GOTO Timeflag !If wait too long, goto timeout code 2270 END IF 2280 CALL Sub_syserror(Uut,Error$(*),Errcount) !Check for any errors logged 2290 ! 2300 !==================================================================================== 2310 ! 2320 Clock(1)=TIMEDATE-Clock(1) !End call set up timer 2330 Clock(2)=TIMEDATE !Start measurement timer 2340 ! 2350 !==================================================================================== = 2360 ! 2370 !PERFORM DSP MEASUREMENTS 2380 ! 2390 OUTPUT Uut;”DISP DSP” !Return to the DSP amplitude main screen 2400 FOR Txcount=1 TO Numdsppwr !Outer loop for Tx levels 2410 Txlev=Dsppwr(Txcount) !Get Tx level from array 2420 OUTPUT Uut;”CELL:MS:TLEV”;Txlev !Program mobile’s Tx level 2430 FOR Arcount=1 TO Numdsparfcn !Inner loop for ARFCN 2440 Arfcn=Dsparfcn(Arcount) !Get ARFCN from array 2450 OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Arfcn !Program link ARFCN 2460 Count=0 !Establish counter for repeat measurements 2470 REPEAT !May need to repeat if mobile not settled 2480 OUTPUT Uut;”TRIG:AST ‘ARM’” !Arm the DSP measurement 2490 OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:RMS?” !Read all the DSP results: rms phase error 2500 ENTER Uut;Rmspher(Arcount,Txcount) 2510 !Note: program will stick here, waiting for input if mobile fails to provide a valid signal to trigger 2520 ! the Agilent 8922M/S. The program will timeout. The timeout code dissarms the Agilent 8922M/S trigger. 2530 OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:PEAK?” ! peak phase error 2540 ENTER Uut;Pkpher(Arcount,Txcount) 2550 OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:FREQUENCY?”! frequency error 2560 ENTER Uut;Frer(Arcount,Txcount) 2570 OUTPUT Uut;”MEASURE:DSPANALYZER:MSUM?” ! power versus time mask 2580 ENTER Uut;Mask$(Arcount,Txcount) 2590 OUTPUT Uut;”MEASURE:DSPANALYZER:PTCP?” ! Tx power 2600 ENTER Uut;Slpwr(Arcount,Txcount) 2610 OUTPUT Uut;”RFAN:AMPL1?” !Read expected power level to compare with 2620 ENTER Uut;Anlevel !measured and +/-3dB allowed range 2630 OUTPUT Uut;”MEASURE:DSPANALYZER:SSTATUS?” !Check for any DSP measurement errors 2640 ENTER Uut;Sstatus$

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GPIB Tutorial and Examples

Program 1

2650 Threedb=ABS(Anlevel-Slpwr(Arcount,Txcount)) !Calculate difference between measured and expected 2660 Count=Count+1 2670 UNTIL Count=3 OR Threedb<Leveltol !Re-do DSP once if phone fails, the mobile 2680 IF Sstatus$<>”””No Error””” OR Threedb>3 THEN !may still be settling after Tx Level change 2690 Err$=”DSP Measurement Problem “ !Create an error message string 2700 IF Sstatus$<>”””No Error””” THEN Err$=Err$&Sstatus$ 2710 IF Threedb>3 THEN Err$=Err$&” 3dB input range exceeded” 2720 Errcount=Errcount+1 2730 Error$(Errcount)=Err$ 2740 END IF 2750 NEXT Arcount 2760 NEXT Txcount 2770 CALL Sub_syserror(Uut,Error$(*),Errcount) !Check for logged errors after DSP 2780 ! 2790 !==================================================================================== 2800 ! 2810 !PERFORM FAST POWER MEASUREMENTS 2820 ! 2830 OUTPUT Uut;”DISP:SCR CELL1” !Display cell control screen 2840 FOR Txcount=1 TO Numfppwr !Outer loop for mobile Tx levels 2850 Txlev=Fppwr(Txcount) !Get Tx level from array 2860 OUTPUT Uut;”CELL:MS:TLEV”;Txlev !Program mobile’s Tx level 2870 Time=0 !Establish a loop to wait for phone to 2880 Maxtime=10 !confirm over uplink SACCH that it has 2890 REPEAT !reached commanded Tx level 2900 OUTPUT Uut;”MEAS:CELL:SACCH:TLEV?” !Read mobile’s SACCH report of Tx Level 2910 ENTER Uut;Sacchtxlev 2920 WAIT .4 !Pause, SACCH has low banswidth so reports 2930 Time=Time+1 !update slowly 2940 UNTIL Sacchtxlev=Txlev OR Time=Maxtime !Check for mobile reaching programmed Tx level 2950 IF Time=Maxtime THEN 2960 Errcount=Errcount+1 2970 Error$(Errcount)=”Mobile failed to change Tx Level” !Error if mobile doesn’t reach programmed level 2980 END IF 2990 FOR Arcount=1 TO Numfparfcn !Inner loop for measurement ARFCN 3000 Arfcn=Fparfcn(Arcount) !Get ARFCN from array 3010 OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Arfcn !Request TCH channel assignement to new ARFCN 3020 Time=0 !Establish a loop to wait for channel 3030 Maxtime=10 !assignment to complete 3040 REPEAT 3050 OUTPUT Uut;”CELL:CALL:STAT:TCH:ARFCN?” !Check call status for HP 8922M/S to see if 3060 ENTER Uut;Reparfcn !mobile has reached new channel 3070 WAIT .1 !Short pause. Channel changes use FACCH which 3080 Time=Time+1 !is faster than SACCH for Tx level changes

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GPIB Tutorial and Examples

Program 1

3090 UNTIL Reparfcn=Arfcn OR Time=Maxtime !If reported ARFCN matches programmed ARFCN 3100 IF Time=Maxtime THEN !FACCH handshake is complete and mobile is on 3110 Errcount=Errcount+1 !new channel. 3120 Error$(Errcount)=”Mobile failed channel assignment” !If mobile fails to reach new channel, set an error 3130 END IF !Now mobile is stable on new Tx level and ARFCN 3140 OUTPUT Uut;”MEAS:FTCP:POW?” !read the peak power meter 3150 ENTER Uut;Fpwrmeas(Arcount,Txcount) 3160 OUTPUT Uut;”RFAN:AMPL1?” !Read the Agilent 8922M/S analyzer expected input level 3170 ENTER Uut;Anlevel !and compare with the measured power to check that 3180 Threedb=ABS(Anlevel-Fpwrmeas(Arcount,Txcount)) !the result is within the allowed +/-3dB window 3190 IF Threedb>3 THEN 3200 Errcount=Errcount+1 3210 Error$(Errcount)=”Fast power meas 3dB input range exceeded” 3220 END IF 3230 NEXT Arcount 3240 NEXT Txcount 3250 CALL Sub_syserror(Uut,Error$(*),Errcount) !Check Agilent 8922M/ S error log 3260 ! 3270!================================================================================ ==== 3280 ! 3290 !PERFORM BIT ERROR MEASUREMENTS 3300 ! 3310 OUTPUT Uut;”DISP:SCR BER1” !Display single BER test screen 3320 FOR Rxcount=1 TO Numberpwr !Outer loop for downlink power levels 3330 Berpo=Berpwr(Rxcount) !Get downlink power level from array 3340 OUTPUT Uut;”RFG:AMPL1 “;Berpo !Program Agilent 8922M/ S Generator to downlink power 3350 Count=0 !Establish a loop to wait for the mobile’s receiver 3360 Instance=0 !AGC to recover from downlink level change. 3370 REPEAT !The mobile’s reported RXQual will indicate when 3380 OUTPUT Uut;”MEAS:CELL:SACCH:RESET” !the AGC has recovered. Start by clearing old SACCH 3390 Count=Count+1 !The inner REPEAT loop is used to check and wait 3400 Rxqualsettle=-1 !for the next SACCH report from mobile. When the 3410 Time=0 !Agilent 8922M/S is waiting for a report, after a SACCH 3420 REPEAT !reset it returns -1 3430 WAIT .3 !Pause. SACCH is a low bandwidth channel. 3440 Time=Time+1 3450 OUTPUT Uut;”MEAS:CELL:SACCH:PARTIAL:RQU?” !Read the SACCH report from the mobile 3460 ENTER Uut;Rxqualsettle !-1 is returned if Agilent 8922M/S is still waiting 3470 UNTIL Time>7 OR Rxqualsettle<>-1 !for the report 3480 IF Rxqualsettle<=4 THEN !If RxQual is less than 4, it’s good enough to 3490 Instance=Instance+1 !continue. The program checks for more than

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GPIB Tutorial and Examples

Program 1

3500 ELSE !3 consecutive reports at RxQual 4 or less to 3510 Instance=0 !be be sure the mobile has stabalized. The 3520 END IF !mobile may return up to 2 reports at the old 3530 UNTIL Count>20 OR Instance>3 !level, before it recognizes the input level 3540 IF Count>20 OR Rxqualsettle=-1 THEN !change 3550 Errcount=Errcount+1 !If RxQual does not stabalize, report an error 3560 Error$(Errcount)=”Mobile receiver AGC did not respond to downlink level change” 3570 END IF 3580 FOR Arcount=1 TO Numberarfcn !Inner loop for BER test ARFCN 3590 Arfcn=Berarfcn(Arcount) !Get ARFCN from array 3600 OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Arfcn !Request channel assignment. Agilent 8922M/S will hold 3610 OUTPUT Uut;”TRIG:BET:MODE ‘RUN’” !off BER test until channel change is done. Run test. 3620 OUTPUT Uut;”MEAS:CELL:SACCH:RESET” !While BER test is running, test SACCH reports 3630 Rxlev(Arcount,Rxcount)=-1 !Clear old reports 3640 Time=0 3650 REPEAT !Loop and wait for SACCH report. -1 is returned 3660 WAIT .3 !when Agilent 8922M/ S is waiting for report 3670 Time=Time+1 3680 OUTPUT Uut;”MEAS:CELL:SACCH:PARTIAL:RLEV?” !Read RxLev 3690 ENTER Uut;Rxlev(Arcount,Rxcount) 3700 OUTPUT Uut;”MEAS:CELL:SACCH:PARTIAL:RQU?” !Read RxQual 3710 ENTER Uut;Rxqual(Arcount,Rxcount) 3720 OUTPUT Uut;”MEAS:CELL:MS:TERR?” !Also read uplink timing error 3730 ENTER Uut;Txtim(Arcount,Rxcount) 3740 UNTIL Time>7 OR Rxlev(Arcount,Rxcount)<>-1 !Try again if SACCH report not ready 3750 OUTPUT Uut;”MEAS:BET:BERR:RATIO1?” !Read bit error test result 3760 ENTER Uut;Ber1(Arcount,Rxcount) 3770 Ber1(Arcount,Rxcount)=Ber1(Arcount,Rxcount)/10000 !Convert from ppm to % 3780 NEXT Arcount 3790 NEXT Rxcount 3800 OUTPUT Uut;”RFG:AMPL1 “;Bchpwr !Reset downlink to normal power 3810 CALL Sub_syserror(Uut,Error$(*),Errcount) !Check for any logged errors 3820 ! 3830 !========================================================================= 3840 ! 3850 Clock(2)=TIMEDATE-Clock(2) !Stop measurement timer 3860 Clock(3)=TIMEDATE !Start call clearing timer 3870 ! 3880 !================================================================================ 3890 ! 3900 !END THE CALL 3910 ! 3920 OUTPUT Uut;”DISP CELL1” !Display the cell control screen 3930 OUTPUT Uut;”CELL:CALL:END” !Request a call termination 3940 Time=0 !Establish a loop to wait for the mobile

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GPIB Tutorial and Examples

Program 1

3950 REPEAT !to clear the call 3960 Time=Time+1 3970 WAIT 1 3980 OUTPUT Uut;”CELL:CALL:STATUS:STATE?” !Check the call status 3990 ENTER Uut;Status$ 4000 UNTIL Status$=”””INACTIVE””” OR Time>30 !Call status will go to inactive when the 4010 IF Time>30 THEN !mobile has cleared 4020 Errcount=Errcount+1 4030 Error$(Errcount)=”Mobile failed to end call” !Log an error if the mobile fails to clear 4040 GOTO Timeflag !and go to the timeout code 4050 CALL Sub_syserror(Uut,Error$(*),Errcount) !Check for any Agilent 8922M/S logged errors 4060 END IF 4070 OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Dsparfcn(1) !Reset the ARFCN and mobile Tx level ready 4080 OUTPUT Uut;”CELL:MS:TLEV “;Dsppwr(1) !to begin testing the next phone 4090 !=================================================================================== 4100 ! 4110 Clock(3)=TIMEDATE-Clock(3) !Stop the call clearing timer 4120 ! 4130 !==================================================================================== 4140 ! 4150 !PRINT MEASUREMENT RESULTS 4160 ! 4170 CALL Sub_printit(Fparfcn(*),Fppwr(*),Fpwrmeas(*),Null(*),Null(*),Null(*),Null(*),Nullst$(* ),Numfparfcn,Numfppwr,Message$(3),Message$(4),Emptyst$,Empty) 4180 CALL Sub_printit(Dsparfcn(*),Dsppwr(*),Slpwr(*),Pkpher(*),Rmspher(*),Frer(*),Null(*),Mask$ (*),Numdsparfcn,Numdsppwr,Message$(5),Message$(6),Emptyst$,Empty) 4190 CALL Sub_printit(Berarfcn(*),Berpwr(*),Ber1(*),Rxqual(*),Rxlev(*),Txtim(*),Null(*),Nullst$ (*),Numberarfcn,Numberpwr,Message$(7),Message$(8),Emptyst$,Empty) 4200 ! 4210 !==================================================================================== 4220 ! 4230 !PRINT TEST TIMES AND ERROR MESSAGES 4240 ! 4250 ! 4260 FOR X=1 TO 3 4270 PRINT Message$(X+9);DROUND(Clock(X),4);Message$(9) 4280 NEXT X 4290 PRINT 4300 PRINT 4310 IF Errcount=0 THEN 4320 Errcount=1 4330 Error$(1)=”No Errors” 4340 END IF 4350 FOR X=1 TO Errcount 4360 PRINT Error$(X) 4370 NEXT X 4380 Errcount=0 4390 ! 4400 !================================================================================= 4410 ! 4420 !LOOP IF ANOTHER PHONE IS TO BE TESTED 4430 ! 4440 PRINT Message$(2) 4450 INPUT Answer$

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GPIB Tutorial and Examples

Program 1

4460 Run$=”no” 4470 IF Answer$=”Y” OR Answer$=”y” THEN Run$=”yes” 4480 UNTIL Run$<>”yes” 4490 END 4500 ! 4510 !==================================================================================== 4520 !SUBROUTINES BELOW 4530 !==================================================================================== 4540 ! 4550 !RESULTS PRINTING SUBROUTINE 4560 ! 4570 SUB Sub_printit(Result1(*),Result2(*),Result3(*),Result4(*),Result5(*),Result6(*),Result7 (*),Result8$(*),Numarfcn,Numpwr,Title$,Heading$,Emptyst$,Empty) 4580 PRINT Title$ 4590 PRINT 4600 PRINT Heading$ 4610 FOR Arcount=1 TO Numarfcn 4620 FOR Txcount=1 TO Numpwr 4630 PRINT Result1(Arcount), 4640 PRINT Result2(Txcount), 4650 IF Result3(1,1)<>Empty THEN PRINT DROUND(Result3(Arcount,Txcount),4), 4660 IF Result4(1,1)<>Empty THEN PRINT DROUND(Result4(Arcount,Txcount),4), 4670 IF Result5(1,1)<>Empty THEN PRINT DROUND(Result5(Arcount,Txcount),4), 4680 IF Result6(1,1)<>Empty THEN PRINT DROUND(Result6(Arcount,Txcount),4), 4690 IF Result7(1,1)<>Empty THEN PRINT DROUND(Result7(Arcount,Txcount),4), 4700 IF Result8$(1,1)<>Emptyst$ THEN PRINT Result8$(Arcount,Txcount), 4710 PRINT 4720 NEXT Txcount 4730 NEXT Arcount 4740 PRINT 4750 SUBEND 4760 ! 4770 !============================================================================= 4780 ! 4790 !CHECK FOR Agilent 8922M/S SYSTEM ERRORS 4800 ! 4810 SUB Sub_syserror(Uut,Error$(*),Errcount) 4820 DIM Systemerror$[100] 4830 REPEAT !Set up a loop to drain the Agilent 8922M/S error stack 4840 OUTPUT Uut;”SYSTEM:ERROR?” !Read the last error from the stack 4850 ENTER Uut;Systemerror$ 4860 IF VAL(Systemerror$)<>0 THEN !Code 0 indicates no error 4870 Errcount=Errcount+1 !If not zero, add the error to the programs error array 4880 Error$(Errcount)=Systemerror$ 4890 END IF 4900 UNTIL VAL(Systemerror$)=0 !End when all the errors have been read 4910 SUBEND 4920 ! 4930 !============================================================================== 4940 !end of program

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GPIB Tutorial and Examples

Program 2

10 !RE-STORE “PROG2” 20 !RE-SAVE “PROG2:,1404” 30 !========================================================================= 40 ! 50 !Example program 2 60 ! 70 !Advanced GPIB techniques for measuring a GSM900 mobile using the Agilent 8922S and M 80 !GSM MS Test Sets. The program measures Tx power, power vs time, phase and frequency 90 !error, bit error ratio, timing error, Rx Lev and Rx Qual. A hopping TCH is used 100 !to minimize channel change time. Power measurements are used to indicate when the mobile 110 !has settled after a Tx Level change 120 ! 130 !(c) Agilent Technologies 1996 140 ! 150 !Rev 1.0 160 !I R HP QMD 7.9.94 170 !Slightly modified by C B 24.1.96 - Changed F/H to M/S throughout 180 !============================================================================ 190 ! 200 DIM Berpwr(5) !Downlink power levels in dBm for bit error test 210 DIM Berarfcn(125) !ARFCN to perform bit error test on 220 DIM Dsppwr(15) !Mobile Tx power levels for DSP test 230 DIM Dsparfcn(124) !ARFCN to perform DSP test on 240 DIM Fparfcn(124) !ARFCN to perform fast power test on 250 DIM Fppwr(15) !Mobile Tx power levels for fast power test 260 DIM Message$(30)[100] !Output strings 270 DIM Error$(50)[100] !Error message strings 280 DIM Err$[100] !Internally used temporary error string 290 DIM Rmspher(50,50) !Measurement results from rms phase error, dimensions(ARFCN,TXLEVEL) 300 DIM Pkpher(50,50) !Measurement results from peak phase error 310 DIM Frer(50,50) !Measurement results from freq error 320 DIM Slpwr(50,50) !Measurement results from DSP analyzer power measurement 330 DIM Txtim(50,50) !Tx timing error measurement results 340 DIM Fpwrmeas(50,50) !Measurement results from fast power 350 DIM Ber1(50,50) !Bit error test measurement results, dimensions(ARFCN,Downlink Power) 360 DIM Clock(5) !Test Times 370 DIM Mask$(50,50)[10] !Power versus time limit mask specification 380 DIM Rxqual(50,50) !RxQual measurement results, dimensions(ARFCN,Downlink Power) 390 DIM Rxlev(50,50) !RxLev measurement results 400 DIM Null(50,50) !Empty array 410 DIM Nullst$(50,50)[50] !Empty string array 420 DIM Ca$[124] !String for CA (Cell Allocation) table, used for hopping call 430 DIM Ma$[63] !String for MA (Mobile Allocation) table, used for hopping call 440 ! 450 !==================================================================== 460 ! 470 !GENERAL MEASUREMENT SET UP SPECIFIED 480 ! 490 Uut=714 !GPIB address of Agilent 8922M/S 500 Extloss=-1 !Loss of cable linking 8922 to mobile (loss=-xdB) 510 Bchpwr=-80 !BCCH power level in dBm 520 Imsi$=”’001012345678901’” !Paging IMSI of mobile’s test SIM 530 Timeouttime=30 !The GPIB timeout in seconds

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GPIB Tutorial and Examples

Program 2

540 Leveltol=1 !Power tolerence to indicate TX Level has settled after change (dB) 550 Fpthreshold=.3 !Power tolerence for fast power measurement after analyzer channel change (dB) 560 ! 570 !====================================================================== 580 ! 590 !MEASUREMENT POINTS ARE DEFINED IN THIS SECTION 600 ! 610 !Bit error ratio test 620 ! 630 Numberpwr=1 !The number of downlink power levels for bit error test 640 Berpwr(1)=-102 !The power level in dBm of the first downlink power.

Etc....

650 Bits1=10000 !The number of bits to test at each ARFCN/Power combination 660 Numberarfcn=3 !The number of ARFCN for bit error test

670 Berarfcn(1)=1 !The value of the first ARFCN. Etc....

680 Berarfcn(2)=65 690 Berarfcn(3)=124 700 ! 710 ! 720 !NOTE: with hopping call method used in this program, no two ARFCN in either DSP or Fast Power 730 ! should be placed too close together. Closely spaced ARFCN will allow unwanted energy to 740 ! to fall within the Agilent 8922M/S IF bandwidth and RF rise trigger on the wrong timeslot. 750 ! Expect DSP FM Errors if this happens. 760 ! 770 !DSP measurememnts 780 ! 790 Numdsppwr=3 !The number of mobile TX Levels for DSP test 800 Dsppwr(1)=5 !The value of the first TX Level. Etc... 810 Dsppwr(2)=10 820 Dsppwr(3)=15 830 Numdsparfcn=3 !The number of ARFCN for DSP test

840 Dsparfcn(1)=1 !The value of the first ARFCN. Etc....

850 Dsparfcn(2)=65 860 Dsparfcn(3)=124 870 ! 880 !Fast Power measurements 890 ! 900 Numfppwr=8 !The number of mobile TX Levels for fast power test

910 Fppwr(1)=6 !The value of the first TX Level. Etc....

920 Fppwr(2)=7 930 Fppwr(3)=8 940 Fppwr(4)=9 950 Fppwr(5)=11 960 Fppwr(6)=12 970 Fppwr(7)=13 980 Fppwr(8)=14 990 Numfparfcn=3 !The number of ARFCN for fast power test 1000 Fparfcn(1)=1 !The value of the first ARFCN. Etc... 1010 Fparfcn(2)=65 1020 Fparfcn(3)=124 1030 ! 1040 !========================================================================= 1050 ! 1060 !PRINT MESSAGES ARE DEFINED BELOW 1070 ! 1080 Message$(1)=”Answer call when mobile rings” 1090 Message$(2)=”Would you like to test again? (y or n)” 1100 Message$(3)=”Results from Fast Power Measurement” 1110 Message$(4)=”ARFCN TXLEV POWER dBm” 1120 Message$(5)=”Results from Power, Power vs Time & Modulation Measurements” 1130 Message$(6)=”ARFCN TXLEV POWER dBm Pk & RMS PHASE FREQ ERROR MASK”

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GPIB Tutorial and Examples

Program 2

1140 Message$(7)=”Results from BER Test” 1150 Message$(8)=”ARFCN Downlink dBm BER1% RxQual RxLev TIMERR” 1160 Message$(9)=” Seconds.” 1170 Message$(10)=”Time for phone to camp and answer page: “ 1180 Message$(11)=”Time for testing : “ 1190 Message$(12)=”Time for call clear down : “ 1200 ! 1210 Emptyst$=”@” 1220 Empty=-999 1230 Nullst$(1,1)=Emptyst$ 1240 Null(1,1)=Empty 1250 ! 1260 !========================================================================== 1270 ! 1280 !ERROR AND TIMEOUT HANDLING 1290 ! 1300 Busport=INT(Uut/100) !Get the GPIB port code from Uut address 1310 CLEAR Busport !Clear bus from any aborted previous commands 1320 Timeinit$=”yes” !Set a flag so timeout code is not executed first pass 1330 ON TIMEOUT Busport,Timeouttime GOTO Timeflag !Establish goto flag for HPIB timeouts 1340 Timeflag:IF Timeinit$<>”yes” THEN !After a timeout, execution comes here 1350 OFF TIMEOUT Busport 1360 CLEAR Busport !Clear any half done commands 1370 OUTPUT Uut;”TRIG:AST ‘disarm’” !Dissarm the DSP trigger 1380 CALL Sub_syserror(Uut,Error$(*),Errcount) !Gather any error message from the Agilent 8922M/S 1390 PRINT “Measurement Timed Out. Ending Test” 1400 IF Errcount=0 THEN 1410 Errcount=1 1420 Error$(1)=”No errors recorded” 1430 END IF 1440 FOR X=1 TO Errcount !Print error messages 1450 PRINT Error$(X) 1460 NEXT X 1470 STOP !Execution stops here after critical errors 1480 ELSE 1490 Timeinit$=”no” !Reset flag so next time, it must be a real timeout 1500 END IF 1510 Errcount=0 1520 CALL Sub_syserror(Uut,Error$(*),Errcount) !Clear any old errors from Agilent 8922M/S before the 1530 Errcount=0 !test begins 1540 ! 1550 !=========================================================================== 1560 ! 1570 !PRESET THE HP 8922M/S AND SET IT TO THE CORRECT COMPATIBILITY MODE (executed once only) 1580 ! 1590 ! 1600 OUTPUT Uut;”*RST” !Preset the Agilent 8922M/S 1610 OUTPUT Uut;”CONF:COMP?” !Check compatability mode and set to M or S 1620 ENTER Uut;Product$ 1630 IF Product$<>”””8922S””” AND Product$<>”””8922M””” THEN 1640 IF Product$=”””8922E””” THEN OUTPUT Uut;”CONF:COMP ‘8922S’” 1650 IF Product$=”””8922G””” THEN OUTPUT Uut;”CONF:COMP ‘8922M’” 1660 OUTPUT Uut;”*RST” !A preset is needed after compatability change 1670 END IF 1680 CALL Sub_syserror(Uut,Error$(*),Errcount) !Check for any errors logged by Agilent 8922M/S

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GPIB Tutorial and Examples

Program 2

1690 ! 1700 !================================================================================ 1710 ! 1720 !CREATE CA AND MA TABLES FOR HOPPED TCH (executed once only) 1730 ! 1740 ! 1750 OUTPUT Uut;”DISP:SCR CCON” !Display the cell config screen 1760 OUTPUT Uut;”CCON:STATE ‘settable’” !Take the cell down to edit CA and MA tables 1770 Mano=0 !Count for number of MA entries 1780 Ca$=”” !String will be used for CA table 1790 FOR X=1 TO 124 !Count through 124 possible ARFCN 1800 Bit$=”0” !Set CA table entry initially to zero 1810 FOR Y=1 TO Numfparfcn !Check all fast power ARFCN for ARFCN X 1820 IF Fparfcn(Y)=X THEN Bit$=”1” !If ARFCN = X make this CA entry a one 1830 NEXT Y 1840 FOR Y=1 TO Numdsparfcn !Similarly check DSP ARFCN 1850 IF Dsparfcn(Y)=X THEN Bit$=”1” 1860 NEXT Y 1870 Ca$=Ca$&Bit$ !Add this digit to CA string 1880 IF Bit$=”1” THEN Mano=Mano+1 !If the entry is one, there will need to be an MA entry 1890 NEXT X 1900 FOR X=1 TO 63 !Count through the MA table 1910 Bit$=”0” !Initial value for MA digit X 1920 IF Mano>0 THEN Bit$=”1” !Place the same nomber of 1s in the MA as in the CA 1930 Mano=Mano-1 1940 Ma$=Ma$&Bit$ 1950 NEXT X 1960 OUTPUT Uut;”CCON:CA “&”’”&Ca$&”’” !Output the CA and MA tables 1970 OUTPUT Uut;”CCON:MA1 “&”’”&Ma$&”’” 1980 OUTPUT Uut;”CCON:MA2 “&”’”&Ma$&”’” 1990 OUTPUT Uut;”DISP:SCR CELL1” !Display the cell control screen, and select + 2000 OUTPUT Uut;”CELL:MODE ‘ACTIVE CELL +’” !mode for hopped call. Mode change activates cell 2010 ! 2020 ! 2030 !============================================================================ 2040 ! 2050 !SET THE Agilent 8922M/S INITIAL CONDITIONS (executed once only) 2060 ! 2070 ! 2080 OUTPUT Uut;”MSINFO:PAGING:IMSI “&Imsi$ !Set the paging IMSI 2090 OUTPUT Uut;”CONF:OFL:RFIN “;Extloss !Set the external cable loss 2100 OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Dsparfcn(1) !Set the ARFCN to the first expected test point 2110 OUTPUT Uut;”CELL:MS:TLEV “;Dsppwr(1) !Set the mobile Tx Level to the first test point 2120 OUTPUT Uut;”CONF:OFL:MODE ‘ON’” !Turn external offset mode ON to use cable loss 2130 OUTPUT Uut;”CW:PMZERO” !Zero the power meter 2140 OUTPUT Uut;”RFG:AMPL1 “;Bchpwr !Set the downlink power for normal signalling 2150 OUTPUT Uut;”TRIG:MODE ‘SINGLE’” !Set the DSP meas trigger to single trig mode 2160 OUTPUT Uut;”TRIG:BET ‘SINGLE’” !Set bit error meas trigger to single trig mode 2170 OUTPUT Uut;”BET:BITS1 “;Bits1 !Set the number of bits to be measured for bit error 2180 OUTPUT Uut;”DISP:SCR DSP” !Display the DSP amplitude main screen to enter limits 2190 OUTPUT Uut;”DISP:SCR:DSP:VIEW ‘AMPL MAIN’” !for power versus time mask

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GPIB Tutorial and Examples

Program 2

2200 DATA -40,-28,-18,-10,0,180,360,542.769,547.769,552.769,560.769,570.769 !Mask corner times in us 2210 DATA -36,-30,-6,4,1,1,1,1,1,-6,-30,-36 !Upper limits in dB 2220 DATA -60,-60,-60,-60,-1,-1,-1,-1,-60,-60,-60,-60 !Lower limits in dB 2230 FOR X=1 TO 12 2240 READ Masktim !Reas corner times from DATA statement 2250 Masktim=Masktim/1.E+6 !Convert seconds 2260 Num$=VAL$(X) !Convert index to string for HPIB 2270 OUTPUT Uut;”DSP:AMPL:”&”time”&Num$&” “;Masktim !Output marker times 2280 NEXT X 2290 FOR X=1 TO 12 2300 READ Maskup !Read and output upper limits 2310 Num$=VAL$(X) 2320 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:HLIM “;Maskup 2330 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:HLIM:STATE ON” 2340 NEXT X 2350 FOR X=1 TO 12 2360 READ Masklo !Read and output lower limits 2370 Num$=VAL$(X) 2380 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:LLIM “;Masklo 2390 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:LLIM:STATE ON” 2400 NEXT X 2410 ! 2420 !================================================================================= 2430 ! 2440 !ESTABLISH A LOOP TO BE EXECUTED EACH TIME A MOBILE IS TESTED 2450 ! 2460 ! 2470 Run$=”yes” !Flag for REPEAT loop 2480 REPEAT 2490 Clock(1)=TIMEDATE !Start a test time clock for call set up 2500 ! 2510 !================================================================================= 2520 ! 2530 !PAGE THE MOBILE AND ESTABLISH A CALL 2540 ! 2550 ! 2560 OUTPUT Uut;”DISP:SCR CELL1” !Display the cell control screen 2570 PRINT Message$(1) !Output answer call message 2580 OUTPUT Uut;”CELL:TCH1:MODE ‘hopped’” !Set the TCH to hop mode 2590 OUTPUT Uut;”CELL:CALL:ORIGINATE” !Page mobile Agilent 8922M/S org call 2600 Time=0 !Set counter for mobile to answer 2610 Maxtime=100 2620 REPEAT 2630 Time=Time+1 2640 WAIT 1 2650 OUTPUT Uut;”CELL:CALL:STATUS:STATE?” !Check the call status for connected 2660 ENTER Uut;Status$ 2670 UNTIL Status$=”””CONNECTED””” OR Time>Maxtime 2680 IF Time>Maxtime THEN 2690 Errcount=Errcount+1 2700 Error$(Errcount)=”Call could not be established”

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GPIB Tutorial and Examples

Program 2

2710 GOTO Timeflag !If wait too long, goto timeout code 2720 END IF 2730 ! 2740 !=================================================================================== 2750 ! 2760 Clock(1)=TIMEDATE-Clock(1) !End call set up timer 2770 Clock(2)=TIMEDATE !Start measurement timer 2780 ! 2790 !=================================================================================== 2800 ! 2810 !UNCOUPLE Agilent 8922M/S RF ANALYZER FROM GSM BASE STATION EMULATOR 2820 ! 2830 OUTPUT Uut;”CELL:MS:TADV:MODE ‘manual’” !Fix timing advance at 0 so 8922 doesn’t auto adjust 2840 OUTPUT Uut;”TRIG:DDEM:AST ‘disarm’” !Disable the uplink demodulator 2850 OUTPUT Uut;”HOPC:RFAN:AST ‘disarm’” !Stop the RF Analyzer from hopping 2860 OUTPUT Uut;”HOPC:RFAN:MODE ‘non-hop’” 2870 OUTPUT Uut;”TRIG:SOUR ‘rf rise’” !Trigger measurements from RF rise, when the 2880 OUTPUT Uut;”TRIG:DEL 0” !signal falls within the IF bandwidth 2890 ! 2900 !=================================================================================== 2910 ! 2920 !PERFORM DSP MEASUREMENTS 2930 ! 2940 OUTPUT Uut;”DISP DSP” !Return to the DSP amplitude main screen 2950 FOR Txcount=1 TO Numdsppwr !Outer loop for Tx levels 2960 Txlev=Dsppwr(Txcount) !Get Tx level from array 2970 OUTPUT Uut;”CELL:MS:TLEV”;Txlev !Program mobile’s Tx level 2980 Txlevchange$=”true” 2990 FOR Arcount=1 TO Numdsparfcn !Inner loop for ARFCN 3000 Arfcn=Dsparfcn(Arcount) !Get ARFCN from array 3010 Freq=(890+Arfcn*.2)*1000000 !Calculate ARFCN frequency 3020 OUTPUT Uut;”RFAN:FREQ “;Freq !Tune the RF Analyzer to select individual ARFCN 3030 Count=0 !Establish counter for repeat measurements 3040 REPEAT !May need to repeat if mobile not settled 3050 OUTPUT Uut;”TRIG:AST ‘ARM’” !Arm the DSP measurement 3060 OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:RMS?” !Read all the DSP results: rms phase error 3070 ENTER Uut;Rmspher(Arcount,Txcount) 3080 !Note: program will stick here, waiting for input if mobile fails to provide a valid signal to trigger 3090 ! the Agilent 8922M/S. The program will timeout. The timeout code dissarms the Agilent 8922M/S trigger. 3100 OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:PEAK?” ! peak phase error 3110 ENTER Uut;Pkpher(Arcount,Txcount) 3120 OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:FREQUENCY?”! frequency error 3130 ENTER Uut;Frer(Arcount,Txcount) 3140 OUTPUT Uut;”MEASURE:DSPANALYZER:MSUM?” ! power versus time mask 3150 ENTER Uut;Mask$(Arcount,Txcount)

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GPIB Tutorial and Examples

Program 2

3160 OUTPUT Uut;”MEASURE:DSPANALYZER:PTCP?” ! Tx power 3170 ENTER Uut;Slpwr(Arcount,Txcount) 3180 OUTPUT Uut;”RFAN:AMPL1?” !Read expected power level to compare with 3190 ENTER Uut;Anlevel !measured and +/-3dB allowed range 3200 OUTPUT Uut;”MEASURE:DSPANALYZER:SSTATUS?” !Check for any DSP measurement errors 3210 ENTER Uut;Sstatus$ 3220 Threedb=ABS(Anlevel-Slpwr(Arcount,Txcount)) !Calculate difference between measured and expected 3230 Count=Count+1 3240 UNTIL Count=3 OR Threedb<Leveltol OR Txlevchange$=”false” !Re-do DSP once if phone fails, the mobile 3250 IF Sstatus$<>”””No Error””” OR Threedb>3 THEN !may still be settling after Tx Level change 3260 Err$=”DSP Measurement Problem “ !Create an error message string 3270 IF Sstatus$<>”””No Error””” THEN Err$=Err$&Sstatus$ 3280 IF Threedb>3 THEN Err$=Err$&” 3dB input range exceeded” 3290 Errcount=Errcount+1 3300 Error$(Errcount)=Err$ 3310 END IF 3320 Txlevchange$=”false” 3330 NEXT Arcount 3340 NEXT Txcount 3350 ! 3360 !================================================================================== 3370 ! 3380 !PERFORM FAST POWER MEASUREMENTS 3390 ! 3400 OUTPUT Uut;”DISP:SCR CELL1” !Display cell control screen 3410 FOR Txcount=Numfppwr TO 1 STEP -1 !Outer loop for mobile Tx levels 3420 Txlev=Fppwr(Txcount) !Get Tx level from array 3430 OUTPUT Uut;”CELL:MS:TLEV”;Txlev !Program mobile’s Tx level 3440 Txlevchange$=”true” 3450 FOR Arcount=1 TO Numfparfcn !Inner loop for ARFCN 3460 Arfcn=Fparfcn(Arcount) !Get ARFCN from array 3470 Freq=(890+Arfcn*.2)*1000000 !Calculate frequency from ARFCN 3480 OUTPUT Uut;”RFAN:FREQ “;Freq !Tune analyzer frequency 3490 Txlevcount=0 !Count for Tx Level settling 3500 REPEAT !Loop while mobile Tx Level settles 3510 Count=0 !Count for inner loop 3520 Fastpower1=0 !Swap variable for fast power measurement 3530 REPEAT !Loop untill value stabalizes after analyzer 3540 Fastpower2=Fastpower1 !tuning. 3550 OUTPUT Uut;”MEAS:FTCP:POW?” !read the peak power meter 3560 ENTER Uut;Fastpower1 3570 Deltapower=ABS(Fastpower1-Fastpower2) !Look for change since last measurement 3580 Count=Count+1 !Though away 4 old readings (in Agilent 8922M/S 3590 UNTIL (Count>4 AND Deltapower<Fpthreshold) OR Count>10 !measuremement pipline) then look for settled 3600 IF Count>10 THEN !value on new measurement ARFCN. If it never

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GPIB Tutorial and Examples

Program 2

3610 Errcount=Errcount+1 !settles note an error 3620 Error$(Errcount)=”Mobile’s output power did not settle within ‘Fpthreshold’ limits” 3630 END IF 3640 Fpwrmeas(Arcount,Txcount)=(Fastpower1+Fastpower2)/2 !Average last two good readings 3650 OUTPUT Uut;”RFAN:AMPL1?” !Read the Agilent 8922M/S analyzer expected input level 3660 ENTER Uut;Anlevel !and compare with the measured power to check that 3670 Threedb=ABS(Anlevel-Fpwrmeas(Arcount,Txcount)) !the result is within the allowed +/-3dB window 3680 Txlevcount=Txlevcount+1 3690 UNTIL Threedb<Leveltol OR Txlevcount>10 OR Txlevchange$=”false” 3700 IF Threedb>3 THEN 3710 Errcount=Errcount+1 3720 Error$(Errcount)=”Fast power meas 3dB input range exceeded” 3730 END IF 3740 Txlevchange$=”false” 3750 NEXT Arcount 3760 NEXT Txcount 3770 ! 3780 !================================================================================== 3790 ! 3800 !RE-COUPLE Agilent 8922M/S RF ANALYZER TO BASE STATION EMULATOR 3810 ! 3820 OUTPUT Uut;”TRIG:DEL 473.4T” !Set approx three timeslot delay for internal 3830 OUTPUT Uut;”TRIG:SOUR ‘ext demod’” !downlink trigger, and select downlink trigger 3840 OUTPUT Uut;”HOPC:RFAN:MODE ‘hop’” !Set analyzer back to hopping mode 3850 OUTPUT Uut;”HOPC:RFAN:AST ‘arm’” !Re-enable hopping 3860 OUTPUT Uut;”TRIG:DDEM:AST ‘arm’” !Re-enable the uplink demodulator 3870 OUTPUT Uut;”CELL:MS:TADV:MODE ‘auto’” !Return to default timing advance mode 3880 ! 3890 !================================================================================== 3900 ! 3910 !PERFORM BIT ERROR MEASUREMENTS 3920 ! !Note: 4 BER measurements can be made in parallel 3930 OUTPUT Uut;”DISP:SCR BER1” !Display single BER test screen 3940 OUTPUT Uut;”CELL:TCH1:MODE ‘single’” !Return to non-hop TCH. Next channel change executes FACCH 3950 FOR Rxcount=1 TO Numberpwr !Outer loop for downlink power levels 3960 Berpo=Berpwr(Rxcount) !Get downlink power level from array 3970 OUTPUT Uut;”RFG:AMPL1 “;Berpo !Program Agilent 8922M/ S Generator to downlink power 3980 Count=0 !Establish a loop to wait for the mobile’s receiver 3990 Instance=0 !AGC to recover from downlink level change. 4000 REPEAT !The mobile’s reported RXQual will indicate when 4010 OUTPUT Uut;”MEAS:CELL:SACCH:RESET” !the AGC has recovered. Start by clearing old SACCH 4020 Count=Count+1 !The inner REPEAT loop is used to check and wait 4030 Rxqualsettle=-1 !for the next SACCH report from mobile. When the

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GPIB Tutorial and Examples

Program 2

4040 Time=0 !Agilent 8922M/S is waiting for a report, after a SACCH 4050 REPEAT !reset it returns -1 4060 WAIT .3 !Pause. SACCH is a low bandwidth channel. 4070 Time=Time+1 4080 OUTPUT Uut;”MEAS:CELL:SACCH:PARTIAL:RQU?” !Read the SACCH report from the mobile 4090 ENTER Uut;Rxqualsettle !-1 is returned if Agilent 8922M/S is still waiting 4100 UNTIL Time>7 OR Rxqualsettle<>-1 !for the report 4110 IF Rxqualsettle<=4 THEN !If RxQual is less than 4, it’s good enough to 4120 Instance=Instance+1 !continue. The program checks for more than 4130 ELSE !3 consecutive reports at RxQual 4 or less to 4140 Instance=0 !be be sure the mobile has stabalized. The 4150 END IF !mobile may return up to 2 reports at the old 4160 UNTIL Count>20 OR Instance>3 !level, before it recognizes the input level 4170 IF Count>20 OR Rxqualsettle=-1 THEN !change 4180 Errcount=Errcount+1 !If RxQual does not stabalize, report an error 4190 Error$(Errcount)=”Mobile receiver AGC did not respond to downlink level change” 4200 END IF 4210 FOR Arcount=1 TO Numberarfcn !Inner loop for BER test ARFCN 4220 Arfcn=Berarfcn(Arcount) !Get ARFCN from array 4230 OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Arfcn !Request channel assignment. Agilllent 8922M/S will hold 4240 OUTPUT Uut;”TRIG:BET:MODE ‘RUN’” !off BER test until channel change is done. Run test. 4250 OUTPUT Uut;”MEAS:CELL:SACCH:RESET” !While BER test is running, test SACCH reports 4260 Rxlev(Arcount,Rxcount)=-1 !Clear old reports 4270 Time=0 4280 REPEAT !Loop and wait for SACCH report. -1 is returned 4290 WAIT .3 !when HP 8922M/S is waiting for report 4300 Time=Time+1 4310 OUTPUT Uut;”MEAS:CELL:SACCH:PARTIAL:RLEV?” !Read RxLev 4320 ENTER Uut;Rxlev(Arcount,Rxcount) 4330 OUTPUT Uut;”MEAS:CELL:SACCH:PARTIAL:RQU?” !Read RxQual 4340 ENTER Uut;Rxqual(Arcount,Rxcount) 4350 OUTPUT Uut;”MEAS:CELL:MS:TERR?” !Also read uplink timing error 4360 ENTER Uut;Txtim(Arcount,Rxcount) 4370 UNTIL Time>7 OR Rxlev(Arcount,Rxcount)<>-1 !Try again if SACCH report not ready 4380 OUTPUT Uut;”MEAS:BET:BERR:RATIO1?” !Read bit error test result 4390 ENTER Uut;Ber1(Arcount,Rxcount) 4400 Ber1(Arcount,Rxcount)=Ber1(Arcount,Rxcount)/10000 !Convert from ppm to % 4410 NEXT Arcount 4420 NEXT Rxcount 4430 OUTPUT Uut;”RFG:AMPL1 “;Bchpwr !Reset downlink to normal power 4440 ! 4450 !================================================================================ 4460 ! 4470 Clock(2)=TIMEDATE-Clock(2) !Stop measurement timer

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GPIB Tutorial and Examples

Program 2

4480 Clock(3)=TIMEDATE !Start call clearing timer 4490 ! 4500 !================================================================================ 4510 ! 4520 !END THE CALL 4530 ! 4540 OUTPUT Uut;”DISP CELL1” !Display the cell control screen 4550 OUTPUT Uut;”CELL:CALL:END” !Request a call termination 4560 Time=0 !Establish a loop to wait for the mobile 4570 REPEAT !to clear the call 4580 Time=Time+1 4590 WAIT 1 4600 OUTPUT Uut;”CELL:CALL:STATUS:STATE?” !Check the call status 4610 ENTER Uut;Status$ 4620 UNTIL Status$=”””INACTIVE””” OR Time>30 !Call status will go to inactive when the 4630 IF Time>30 THEN !mobile has cleared 4640 Errcount=Errcount+1 4650 Error$(Errcount)=”Mobile failed to end call” !Log an error if the mobile fails to clear 4660 GOTO Timeflag !and go to the timeout code 4670 CALL Sub_syserror(Uut,Error$(*),Errcount) !Check for any Agilent 8922M/S logged errors 4680 END IF 4690 OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Dsparfcn(1) !Reset the ARFCN and mobile Tx level ready 4700 OUTPUT Uut;”CELL:MS:TLEV “;Dsppwr(1) !to begin testing the next phone 4710 !=================================================================================== 4720 ! 4730 Clock(3)=TIMEDATE-Clock(3) !Stop the call clearing timer 4740 ! 4750 !==================================================================================== 4760 ! 4770 !PRINT MEASUREMENT RESULTS 4780 ! 4790 CALL Sub_printit(Fparfcn(*),Fppwr(*),Fpwrmeas(*),Null(*),Null(*),Null(*),Null(*),Nullst$(* ),Numfparfcn,Numfppwr,Message$(3),Message$(4),Emptyst$,Empty) 4800 CALL Sub_printit(Dsparfcn(*),Dsppwr(*),Slpwr(*),Pkpher(*),Rmspher(*),Frer(*),Null(*),Mask$ (*),Numdsparfcn,Numdsppwr,Message$(5),Message$(6),Emptyst$,Empty) 4810 CALL Sub_printit(Berarfcn(*),Berpwr(*),Ber1(*),Rxqual(*),Rxlev(*),Txtim(*),Null(*),Nullst$ (*),Numberarfcn,Numberpwr,Message$(7),Message$(8),Emptyst$,Empty) 4820 ! 4830 !==================================================================================== 4840 ! 4850 !PRINT TEST TIMES AND ERROR MESSAGES 4860 ! 4870 ! 4880 FOR X=1 TO 3 4890 PRINT Message$(X+9);DROUND(Clock(X),4);Message$(9) 4900 NEXT X 4910 PRINT 4920 PRINT 4930 IF Errcount=0 THEN 4940 Errcount=1

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GPIB Tutorial and Examples

Program 2

4950 Error$(1)=”No Errors” 4960 END IF 4970 FOR X=1 TO Errcount 4980 PRINT Error$(X) 4990 NEXT X 5000 Errcount=0 5010 ! 5020 !================================================================================== 5030 ! 5040 !LOOP IF ANOTHER PHONE IS TO BE TESTED 5050 ! 5060 PRINT Message$(2) 5070 INPUT Answer$ 5080 Run$=”no” 5090 IF Answer$=”Y” OR Answer$=”y” THEN Run$=”yes” 5100 UNTIL Run$<>”yes” 5110 END 5120 ! 5130 !==================================================================================== 5140 !SUBROUTINES BELOW 5150 !==================================================================================== 5160 ! 5170 !RESULTS PRINTING SUBROUTINE 5180 ! 5190 SUB Sub_printit(Result1(*),Result2(*),Result3(*),Result4(*),Result5(*),Result6(*),Result7 (*),Result8$(*),Numarfcn,Numpwr,Title$,Heading$,Emptyst$,Empty) 5200 PRINT Title$ 5210 PRINT 5220 PRINT Heading$ 5230 FOR Arcount=1 TO Numarfcn 5240 FOR Txcount=1 TO Numpwr 5250 PRINT Result1(Arcount), 5260 PRINT Result2(Txcount), 5270 IF Result3(1,1)<>Empty THEN PRINT DROUND(Result3(Arcount,Txcount),4), 5280 IF Result4(1,1)<>Empty THEN PRINT DROUND(Result4(Arcount,Txcount),4), 5290 IF Result5(1,1)<>Empty THEN PRINT DROUND(Result5(Arcount,Txcount),4), 5300 IF Result6(1,1)<>Empty THEN PRINT DROUND(Result6(Arcount,Txcount),4), 5310 IF Result7(1,1)<>Empty THEN PRINT DROUND(Result7(Arcount,Txcount),4), 5320 IF Result8$(1,1)<>Emptyst$ THEN PRINT Result8$(Arcount,Txcount), 5330 PRINT 5340 NEXT Txcount 5350 NEXT Arcount 5360 PRINT 5370 SUBEND 5380 ! 5390 !============================================================================= 5400 ! 5410 !CHECK FOR Agilent 8922M/S SYSTEM ERRORS 5420 ! 5430 SUB Sub_syserror(Uut,Error$(*),Errcount) 5440 DIM Systemerror$[100] 5450 REPEAT !Set up a loop to drain the Agilent 8922M/S error stack 5460 OUTPUT Uut;”SYSTEM:ERROR?” !Read the last error from the stack 5470 ENTER Uut;Systemerror$ 5480 IF VAL(Systemerror$)<>0 THEN !Code 0 indicates no error 5490 Errcount=Errcount+1 !If not zero, add the error to the programs error array 5500 Error$(Errcount)=Systemerror$ 5510 END IF 5520 UNTIL VAL(Systemerror$)=0 !End when all the errors have been read 5530 SUBEND

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GPIB Tutorial and Examples

Program 3

5540 ! 5550 !============================================================================== 5560 !end of program

Program 3

0 !RE-STORE “PROG3” 20 !RE-SAVE “PROG3:,1404” 30 !========================================================================= 40 ! 50 !Example program 3 60 ! 70 !GPIB program to demonstrate techniques for measuring a GSM mobile opperating in test mode using 80 !the Agilent 8922M and S GSM MS Test Sets. The program uses the Agilent 8922M/S Aux RF Out port to simulate 90 !the test mode mobile. In all other respects, the Agilent 8922M/S is configured to measure a mobile 100 !without the use of over-the-air signalling. The program measures: Tx power, power versus time, 110 !phase and frequency error and bit error ratio. 120 ! 130 !(c) Agilent Technologies 1996 140 ! 150 !Rev 1.0 160 !I R HP QMD 7.9.94 170 !Slightly modified by C B 24.1.96 - Changed F/H to M/S throughout 180 !============================================================================ 190 ! 200 DIM Berpwr(5) !Downlink power levels in dBm for bit error test 210 DIM Berarfcn(125) !ARFCN to perform bit error test on 220 DIM Dsppwr(15) !Mobile Tx power levels for DSP test 230 DIM Dsparfcn(124) !ARFCN to perform DSP test on 240 DIM Fparfcn(124) !ARFCN to perform fast power test on 250 DIM Fppwr(15) !Mobile Tx power levels for fast power test 260 DIM Message$(30)[100] !Output strings 270 DIM Error$(50)[100] !Error message strings 280 DIM Err$[100] !Internally used temporary error string 290 DIM Rmspher(50,50) !Measurement results from rms phase error, dimensions(ARFCN,TXLEVEL) 300 DIM Pkpher(50,50) !Measurement results from peak phase error 310 DIM Frer(50,50) !Measurement results from freq error 320 DIM Slpwr(50,50) !Measurement results from DSP analyzer power measurement 330 DIM Txtim(50,50) !Tx timing error measurement results 340 DIM Fpwrmeas(50,50) !Measurement results from fast power 350 DIM Ber1(50,50) !Bit error test measurement results, dimensions(ARFCN,Downlink Power) 360 DIM Clock(5) !Test Times 370 DIM Mask$(50,50)[10] !Power versus time limit mask specification 380 DIM Rxqual(50,50) !RxQual measurement results, dimensions(ARFCN,Downlink Power) 390 DIM Rxlev(50,50) !RxLev measurement results 400 DIM Null(50,50) !Empty array 410 DIM Nullst$(50,50)[50] !Empty string array 420 DIM Ca$[124] !String for CA (Cell Allocation) table, used for hopping call 430 DIM Ma$[63] !String for MA (Mobile Allocation) table, used for hopping call 440 ! 450 !==================================================================== 460 !

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GPIB Tutorial and Examples

Program 3

470 !GENERAL MEASUREMENT SET UP SPECIFIED 480 ! 490 Uut=714 !GPIB address of Agilent 8922M/S 500 Extloss=-.5 !Loss of cable linking 8922 to mobile (loss=-xdB) 510 Bchpwr=-80 !BCCH power level in dBm 520 Timeouttime=20 !The GPIB timeout in seconds 530 Leveltol=1 !Power tolerence to indicate TX Level has settled after change (dB) 540 Fpthreshold=.3 !Power tolerence for fast power measurement after analyzer channel change (dB) 550 ! 560 !====================================================================== 570 ! 580 !MEASUREMENT POINTS ARE DEFINED IN THIS SECTION 590 ! 600 !Bit error ratio test 610 ! 620 Numberpwr=1 !The number of downlink power levels for bit error test 630 Berpwr(1)=-102 !The power level in dBm of the first downlink power.

Etc....

640 Bits1=10000 !The number of bits to test at each ARFCN/Power combination 650 Numberarfcn=3 !The number of ARFCN for bit error test

660 Berarfcn(1)=1 !The value of the first ARFCN. Etc....

670 Berarfcn(2)=65 680 Berarfcn(3)=124 690 ! 700 ! 710 !DSP measurememnts 720 ! 730 Numdsppwr=3 !The number of mobile TX Levels for DSP test 740 Dsppwr(1)=5 !The value of the first TX Level. Etc... 750 Dsppwr(2)=10 760 Dsppwr(3)=15 770 Numdsparfcn=3 !The number of ARFCN for DSP test

780 Dsparfcn(1)=1 !The value of the first ARFCN. Etc....

790 Dsparfcn(2)=65 800 Dsparfcn(3)=124 810 ! 820 !Fast Power measurements 830 ! 840 Numfppwr=8 !The number of mobile TX Levels for fast power test

850 Fppwr(1)=6 !The value of the first TX Level. Etc....

860 Fppwr(2)=7 870 Fppwr(3)=8 880 Fppwr(4)=9 890 Fppwr(5)=11 900 Fppwr(6)=12 910 Fppwr(7)=13 920 Fppwr(8)=14 930 Numfparfcn=3 !The number of ARFCN for fast power test 940 Fparfcn(1)=1 !The value of the first ARFCN. Etc... 950 Fparfcn(2)=65 960 Fparfcn(3)=124 970 ! 980 !========================================================================= 990 ! 1000 !PRINT MESSAGES ARE DEFINED BELOW 1010 ! 1020 Message$(1)=”Answer call when mobile rings” 1030 Message$(2)=”Would you like to test again? (y or n)” 1040 Message$(3)=”Results from Fast Power Measurement” 1050 Message$(4)=”ARFCN TXLEV POWER dBm” 1060 Message$(5)=”Results from Power, Power vs Time & Modulation Measurements” 1070 Message$(6)=”ARFCN TXLEV POWER dBm Pk & RMS PHASE FREQ ERROR MASK” 1080 Message$(7)=”Results from BER Test” 1090 Message$(8)=”ARFCN Downlink dBm BER1% RxQual RxLev TIMERR”

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GPIB Tutorial and Examples

Program 3

1100 Message$(9)=” Seconds.” 1110 Message$(10)=”Time for phone to camp and answer page: “ 1120 Message$(11)=”Time for testing : “ 1130 Message$(12)=”Time for call clear down : “ 1140 ! 1150 Emptyst$=”@” 1160 Empty=-999 1170 Nullst$(1,1)=Emptyst$ 1180 Null(1,1)=Empty 1190 ! 1200 !========================================================================== 1210 ! 1220 !ERROR AND TIMEOUT HANDLING 1230 ! 1240 Busport=INT(Uut/100) !Get the GPIB port code from Uut address 1250 CLEAR Busport !Clear bus from any aborted previous commands 1260 Timeinit$=”yes” !Set a flag so timeout code is not executed first pass 1270 ON TIMEOUT Busport,Timeouttime GOTO Timeflag !Establish goto flag for GPIB timeouts 1280 Timeflag:IF Timeinit$<>”yes” THEN !After a timeout, execution comes here 1290 OFF TIMEOUT Busport 1300 CLEAR Busport !Clear any half done commands 1310 OUTPUT Uut;”TRIG:AST ‘disarm’” !Dissarm the DSP trigger 1320 CALL Sub_syserror(Uut,Error$(*),Errcount) !Gather any error message from the Agilent 8922M/S 1330 PRINT “Measurement Timed Out. Ending Test” 1340 IF Errcount=0 THEN 1350 Errcount=1 1360 Error$(1)=”No errors recorded” 1370 END IF 1380 FOR X=1 TO Errcount !Print error messages 1390 PRINT Error$(X) 1400 NEXT X 1410 STOP !Execution stops here after critical errors 1420 ELSE 1430 Timeinit$=”no” !Reset flag so next time, it must be a real timeout 1440 END IF 1450 Errcount=0 1460 CALL Sub_syserror(Uut,Error$(*),Errcount) !Clear any old errors from Agilent 8922M/S before the 1470 Errcount=0 !test begins 1480 ! 1490 !=========================================================================== 1500 ! 1510 !PRESET THE Agilent 8922M/S AND SET IT TO THE CORRECT COMPATIBILITY MODE (executed once only) 1520 ! 1530 ! 1540 OUTPUT Uut;”*RST” !Preset the Agilent 8922M/S 1550 OUTPUT Uut;”CONF:COMP?” !Check compatability mode and set to F or H 1560 ENTER Uut;Product$ 1570 IF Product$<>”””8922S””” AND Product$<>”””8922M””” THEN 1580 IF Product$=”””8922E””” THEN OUTPUT Uut;”CONF:COMP ‘8922S’” 1590 IF Product$=”””8922G””” THEN OUTPUT Uut;”CONF:COMP ‘8922M’” 1600 OUTPUT Uut;”*RST” !A preset is needed after compatability change 1610 END IF 1620 CALL Sub_syserror(Uut,Error$(*),Errcount) !Check for any errors logged by Agilent 8922M/S 1630 !

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GPIB Tutorial and Examples

Program 3

1640 !================================================================================ 1650 ! 1660 !SELECT Agilent 8922M/S OPPERATING MODE TO SUITE MOBILES IN TEST MODE (executed once only) 1670 ! 1680 OUTPUT Uut;”CELL:MODE ‘TEST MODE’” !Select Test Mode opperation 1690 ! 1700 ! 1710 !============================================================================ 1720 ! 1730 !SET THE Agilent 8922M/S INITIAL CONDITIONS (executed once only) 1740 ! 1750 ! 1760 OUTPUT Uut;”CONF:OFL:RFIN “;Extloss !Set the external cable loss 1770 OUTPUT Uut;”CONF:OFL:MODE ‘ON’” !Turn external offset mode ON to use cable loss 1780 OUTPUT Uut;”CW:PMZERO” !Zero the power meter 1790 OUTPUT Uut;”RFG:AMPL1 “;Bchpwr !Set the downlink power for normal signalling 1800 OUTPUT Uut;”TRIG:MODE ‘SINGLE’” !Set the DSP meas trigger to single trig mode 1810 OUTPUT Uut;”TRIG:BET ‘SINGLE’” !Set bit error meas trigger to single trig mode 1820 OUTPUT Uut;”BET:BITS1 “;Bits1 !Set the number of bits to be measured for bit error 1830 OUTPUT Uut;”DISP:SCR DSP” !Display the DSP amplitude main screen to enter limits 1840 OUTPUT Uut;”DISP:SCR:DSP:VIEW ‘AMPL MAIN’” !for power versus time mask 1850 DATA -40,-28,-18,-10,0,180,360,542.769,547.769,552.769,560.769,570.769 !Mask corner times in us 1860 DATA -36,-30,-6,4,1,1,1,1,1,-6,-30,-36 !Upper limits in dB 1870 DATA -60,-60,-60,-60,-1,-1,-1,-1,-60,-60,-60,-60 !Lower limits in dB 1880 FOR X=1 TO 12 1890 READ Masktim !Reas corner times from DATA statement 1900 Masktim=Masktim/1.E+6 !Convert seconds 1910 Num$=VAL$(X) !Convert index to string for GPIB 1920 OUTPUT Uut;”DSP:AMPL:”&”time”&Num$&” “;Masktim !Output marker times 1930 NEXT X 1940 FOR X=1 TO 12 1950 READ Maskup !Read and output upper limits 1960 Num$=VAL$(X) 1970 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:HLIM “;Maskup 1980 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:HLIM:STATE ON” 1990 NEXT X 2000 FOR X=1 TO 12 2010 READ Masklo !Read and output lower limits 2020 Num$=VAL$(X) 2030 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:LLIM “;Masklo 2040 OUTPUT Uut;”MEAS:DSP:AMPL:”&”AMPL”&Num$&”:LLIM:STATE ON” 2050 NEXT X 2060 ! 2070 !================================================================================= 2080 ! 2090 !CALL SUBROUTINE ASKING USER TO MAKE APROPRIATE CABLE CONNECTIONS 2100 ! 2110 CALL Sub_trickmobile(Uut,”CABLE”,0,0,Trickfreq,0) !Ask user to connect Agilent 8922M/S ports to 2120 ! !emulate a mobile in test mode 2130 !

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GPIB Tutorial and Examples

Program 3

2140 !================================================================================= 2150 ! 2160 !ESTABLISH A LOOP TO BE EXECUTED EACH TIME A MOBILE IS TESTED 2170 ! 2180 ! 2190 Run$=”yes” !Flag for REPEAT loop 2200 REPEAT 2210 Clock(1)=TIMEDATE !Start a test time clock for call set up 2220 ! 2230 !================================================================================= 2240 ! 2250 !ACTIVATE THE MOBILE IN TEST MODE 2260 ! 2270 CALL Sub_trickmobile(Uut,”TXON”,Dsparfcn(1),Dsppwr(1),Trickfreq,Extloss) !Activate the test mode mobile 2280 ! 2290 !=================================================================================== 2300 ! 2310 Clock(1)=TIMEDATE-Clock(1) !End call set up timer 2320 Clock(2)=TIMEDATE !Start measurement timer 2330 ! 2340 !=================================================================================== 2350 ! 2360 !PERFORM DSP MEASUREMENTS 2370 ! 2380 OUTPUT Uut;”DISP DSP” !Return to the DSP amplitude main screen 2390 FOR Txcount=1 TO Numdsppwr !Outer loop for Tx levels 2400 Txlev=Dsppwr(Txcount) !Get Tx level from array 2410 OUTPUT Uut;”CELL:MS:TLEV”;Txlev !Adjust Analyzer to correct power for mobile 2420 CALL Sub_trickmobile(Uut,”TXLEV”,0,Txlev,Trickfreq,Extloss) !Command test mode mobile to new Tx Level 2430 Txlevchange$=”true” 2440 FOR Arcount=1 TO Numdsparfcn !Inner loop for ARFCN 2450 Arfcn=Dsparfcn(Arcount) !Get ARFCN from array 2460 Freq=(890+Arfcn*.2)*1000000 !Calculate ARFCN frequency 2470 CALL Sub_trickmobile(Uut,”ARFCN”,Arfcn,0,Freq,Extloss) !Command test mode mobile to new ARFCN 2480 OUTPUT Uut;”RFAN:FREQ “;Freq !Tune Analyzer to correct frequency 2490 Count=0 !Establish counter for repeat measurements 2500 REPEAT !May need to repeat if mobile not settled 2510 OUTPUT Uut;”TRIG:AST ‘ARM’” !Arm the DSP measurement 2520 OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:RMS?” !Read all the DSP results: rms phase error 2530 ENTER Uut;Rmspher(Arcount,Txcount) 2540 !Note: program will stick here, waiting for input if mobile fails to provide a valid signal to trigger 2550 ! the HP 8922M/S. The program will timeout. The timeout code dissarms the Agilent 8922M/S trigger. 2560 OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:PEAK?” ! peak phase error 2570 ENTER Uut;Pkpher(Arcount,Txcount) 2580 OUTPUT Uut;”MEASURE:DSPANALYZER:PHASE:ERROR:FREQUENCY?”! frequency error 2590 ENTER Uut;Frer(Arcount,Txcount)

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GPIB Tutorial and Examples

Program 3

2600 OUTPUT Uut;”MEASURE:DSPANALYZER:MSUM?” ! power versus time mask 2610 ENTER Uut;Mask$(Arcount,Txcount) 2620 OUTPUT Uut;”MEASURE:DSPANALYZER:PTCP?” ! Tx power 2630 ENTER Uut;Slpwr(Arcount,Txcount) 2640 OUTPUT Uut;”RFAN:AMPL1?” !Read expected power level to compare with 2650 ENTER Uut;Anlevel !measured and +/-3dB allowed range 2660 OUTPUT Uut;”MEASURE:DSPANALYZER:SSTATUS?” !Check for any DSP measurement errors 2670 ENTER Uut;Sstatus$ 2680 Threedb=ABS(Anlevel-Slpwr(Arcount,Txcount)) !Calculate difference between measured and expected 2690 Count=Count+1 2700 UNTIL Count=3 OR Threedb<Leveltol OR Txlevchange$=”false” !Re-do DSP once if phone fails, the mobile 2710 IF Sstatus$<>”””No Error””” OR Threedb>3 THEN !may still be settling after Tx Level change 2720 Err$=”DSP Measurement Problem “ !Create an error message string 2730 IF Sstatus$<>”””No Error””” THEN Err$=Err$&Sstatus$ 2740 IF Threedb>3 THEN Err$=Err$&” 3dB input range exceeded” 2750 Errcount=Errcount+1 2760 Error$(Errcount)=Err$ 2770 END IF 2780 Txlevchange$=”false” 2790 NEXT Arcount 2800 NEXT Txcount 2810 ! 2820 !================================================================================== 2830 ! 2840 !PERFORM FAST POWER MEASUREMENTS 2850 ! 2860 OUTPUT Uut;”DISP:SCR CELL1” !Display cell control screen 2870 FOR Txcount=Numfppwr TO 1 STEP -1 !Outer loop for mobile Tx levels@@@@ 2880 Txlev=Fppwr(Txcount) !Get Tx level from array 2890 OUTPUT Uut;”CELL:MS:TLEV”;Txlev !Adjust analyzer to correct expected power 2900 CALL Sub_trickmobile(Uut,”TXLEV”,0,Txlev,Trickfreq,Extloss) !Command test mode mobile to new T Level 2910 Txlevchange$=”true” 2920 FOR Arcount=1 TO Numfparfcn !Inner loop for ARFCN 2930 Arfcn=Fparfcn(Arcount) !Get ARFCN from array 2940 Freq=(890+Arfcn*.2)*1000000 !Calculate frequency from ARFCN 2950 CALL Sub_trickmobile(Uut,”ARFCN”,Arfcn,0,Freq,Extloss) !Command test mode mobile to new ARFCN 2960 OUTPUT Uut;”RFAN:FREQ “;Freq !Tune analyzer frequency 2970 Txlevcount=0 !Count for Tx Level settling 2980 REPEAT !Loop while mobile Tx Level settles 2990 Count=0 !Count for inner loop 3000 Fastpower1=0 !Swap variable for fast power measurement 3010 REPEAT !Loop untill value stabalizes after analyzer 3020 Fastpower2=Fastpower1 !tuning. 3030 OUTPUT Uut;”MEAS:FTCP:POW?” !read the peak power meter 3040 ENTER Uut;Fastpower1

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GPIB Tutorial and Examples

Program 3

3050 Deltapower=ABS(Fastpower1-Fastpower2) !Look for change since last measurement 3060 Count=Count+1 !Though away 4 old readings (in Agilent 8922M/S 3070 UNTIL (Count>4 AND Deltapower<Fpthreshold) OR Count>10 !measuremement pipline) then look for settled 3080 IF Count>10 THEN !value on new measurement ARFCN. If it never 3090 Errcount=Errcount+1 !settles note an error 3100 Error$(Errcount)=”Mobile’s output power did not settle within ‘Fpthreshold’ limits” 3110 END IF 3120 Fpwrmeas(Arcount,Txcount)=(Fastpower1+Fastpower2)/2 !Average last two good readings 3130 OUTPUT Uut;”RFAN:AMPL1?” !Read the Agilent 8922M/S analyzer expected input level 3140 ENTER Uut;Anlevel !and compare with the measured power to check that 3150 Threedb=ABS(Anlevel-Fpwrmeas(Arcount,Txcount)) !the result is within the allowed +/-3dB window 3160 Txlevcount=Txlevcount+1 3170 UNTIL Threedb<Leveltol OR Txlevcount>10 OR Txlevchange$=”false” 3180 IF Threedb>3 THEN 3190 Errcount=Errcount+1 3200 Error$(Errcount)=”Fast power meas 3dB input range exceeded” 3210 END IF 3220 Txlevchange$=”false” 3230 NEXT Arcount 3240 NEXT Txcount 3250 ! 3260 !================================================================================== 3270 ! 3280 !PERFORM BIT ERROR MEASUREMENTS 3290 ! !Note: 4 BER measurements can be made in parallel 3300 OUTPUT Uut;”DISP:SCR BER1” !Display single BER test screen 3310 FOR Rxcount=1 TO Numberpwr !Outer loop for downlink power levels 3320 Berpo=Berpwr(Rxcount) !Get downlink power level from array 3330 OUTPUT Uut;”RFG:AMPL1 “;Berpo !Program Agilent 8922M/ S Generator to downlink power 3340 FOR Arcount=1 TO Numberarfcn !Inner loop for BER test ARFCN 3350 Arfcn=Berarfcn(Arcount) !Get ARFCN from array 3360 Freq=(890+Arfcn*.2)*1000000 !Calculate frequency from ARFCN 3370 CALL Sub_trickmobile(Uut,”ARFCN”,Arfcn,0,Freq,Extloss) !Command test mode mobile to new ARFCN 3380 OUTPUT Uut;”RFAN:FREQ “;Freq !Tune analyzer frequency 3390 OUTPUT Uut;”TRIG:BET:MODE ‘RUN’” !off BER test until channel change is done. Run test. 3400 OUTPUT Uut;”MEAS:BET:BERR:RATIO1?” !Read bit error test result 3410 ENTER Uut;Ber1(Arcount,Rxcount) 3420 Ber1(Arcount,Rxcount)=Ber1(Arcount,Rxcount)/10000 !Convert from ppm to % 3430 NEXT Arcount 3440 NEXT Rxcount 3450 OUTPUT Uut;”RFG:AMPL1 “;Bchpwr !Reset downlink to normal power 3460 ! 3470 !================================================================================ 3480 !

2-46

GPIB Tutorial and Examples

Program 3

3490 Clock(2)=TIMEDATE-Clock(2) !Stop measurement timer 3500 Clock(3)=TIMEDATE !Start call clearing timer 3510 ! 3520 !================================================================================ 3530 ! 3540 !END THE CALL 3550 ! 3560 CALL Sub_trickmobile(Uut,”TXOFF”,0,0,Trickfreq,0) !Dissable the test mode mobile 3570 CALL Sub_syserror(Uut,Error$(*),Errcount) !Check for any Agilent 8922M/S logged errors 3580 ! 3590 ! 3600 !=================================================================================== 3610 ! 3620 Clock(3)=TIMEDATE-Clock(3) !Stop the call clearing timer 3630 ! 3640 !==================================================================================== 3650 ! 3660 !PRINT MEASUREMENT RESULTS 3670 ! 3680 CALL Sub_printit(Fparfcn(*),Fppwr(*),Fpwrmeas(*),Null(*),Null(*),Null(*),Null(*),Nullst$(* ),Numfparfcn,Numfppwr,Message$(3),Message$(4),Emptyst$,Empty) 3690 CALL Sub_printit(Dsparfcn(*),Dsppwr(*),Slpwr(*),Pkpher(*),Rmspher(*),Frer(*),Null(*),Mask$ (*),Numdsparfcn,Numdsppwr,Message$(5),Message$(6),Emptyst$,Empty) 3700 CALL Sub_printit(Berarfcn(*),Berpwr(*),Ber1(*),Rxqual(*),Rxlev(*),Txtim(*),Null(*),Nullst$ (*),Numberarfcn,Numberpwr,Message$(7),Message$(8),Emptyst$,Empty) 3710 ! 3720 !==================================================================================== 3730 ! 3740 !PRINT TEST TIMES AND ERROR MESSAGES 3750 ! 3760 ! 3770 FOR X=1 TO 3 3780 PRINT Message$(X+9);DROUND(Clock(X),4);Message$(9) 3790 NEXT X 3800 PRINT 3810 PRINT 3820 IF Errcount=0 THEN 3830 Errcount=1 3840 Error$(1)=”No Errors” 3850 END IF 3860 FOR X=1 TO Errcount 3870 PRINT Error$(X) 3880 NEXT X 3890 Errcount=0 3900 ! 3910 !================================================================================== 3920 ! 3930 !LOOP IF ANOTHER PHONE IS TO BE TESTED 3940 ! 3950 PRINT Message$(2) 3960 INPUT Answer$ 3970 Run$=”no” 3980 IF Answer$=”Y” OR Answer$=”y” THEN Run$=”yes” 3990 UNTIL Run$<>”yes” 4000 END 4010 !

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GPIB Tutorial and Examples

Program 3

4020 !==================================================================================== 4030 !SUBROUTINES BELOW 4040 !==================================================================================== 4050 ! 4060 !RESULTS PRINTING SUBROUTINE 4070 ! 4080 SUB Sub_printit(Result1(*),Result2(*),Result3(*),Result4(*),Result5(*),Result6(*),Result7 (*),Result8$(*),Numarfcn,Numpwr,Title$,Heading$,Emptyst$,Empty) 4090 PRINT Title$ 4100 PRINT 4110 PRINT Heading$ 4120 FOR Arcount=1 TO Numarfcn 4130 FOR Txcount=1 TO Numpwr 4140 PRINT Result1(Arcount), 4150 PRINT Result2(Txcount), 4160 IF Result3(1,1)<>Empty THEN PRINT DROUND(Result3(Arcount,Txcount),4), 4170 IF Result4(1,1)<>Empty THEN PRINT DROUND(Result4(Arcount,Txcount),4), 4180 IF Result5(1,1)<>Empty THEN PRINT DROUND(Result5(Arcount,Txcount),4), 4190 IF Result6(1,1)<>Empty THEN PRINT DROUND(Result6(Arcount,Txcount),4), 4200 IF Result7(1,1)<>Empty THEN PRINT DROUND(Result7(Arcount,Txcount),4), 4210 IF Result8$(1,1)<>Emptyst$ THEN PRINT Result8$(Arcount,Txcount), 4220 PRINT 4230 NEXT Txcount 4240 NEXT Arcount 4250 PRINT 4260 SUBEND 4270 ! 4280 !============================================================================= 4290 ! 4300 !CHECK FOR Agilent 8922M/S SYSTEM ERRORS 4310 ! 4320 SUB Sub_syserror(Uut,Error$(*),Errcount) 4330 DIM Systemerror$[100] 4340 REPEAT !Set up a loop to drain the Agilent 8922M/S error stack 4350 OUTPUT Uut;”SYSTEM:ERROR?” !Read the last error from the stack 4360 ENTER Uut;Systemerror$ 4370 IF VAL(Systemerror$)<>0 THEN !Code 0 indicates no error 4380 Errcount=Errcount+1 !If not zero, add the error to the programs error array 4390 Error$(Errcount)=Systemerror$ 4400 END IF 4410 UNTIL VAL(Systemerror$)=0 !End when all the errors have been read 4420 SUBEND 4430 ! 4440 !============================================================================== 4450 ! 4460 !CONFIGURE THE Agilent 8922M/S AUX RF OUT PORT TO EMULATE A MOBILE IN TEST MODE 4470 ! 4480 !This subroutine uses unsupported HP-IB commands to ‘trick’ the Agilent 8922M/S into opperating as if 4490 !a test mode mobile was connected. The Aux RF Out port is configured to emulate the mobile. 4500 !Replacing this subroutine with one to control a real GSM mobile would allow the program to be 4510 !used in a real application 4520 ! 4530 SUB Sub_trickmobile(Uut,Func$,Arfcn,Txlev,Trickfreq,Extloss) 4540 Trickfreq=(935+Arfcn*.2)*1000000 !Adjust the uplink frequency to equal the downlink 4550 Trickloss=Extloss+(2*Txlev)-43+7 !Adjust the ext loss to simulate Tx Level changes

2-48

GPIB Tutorial and Examples

Program 3

4560 IF Func$=”TXON” THEN !These commands configure the generator to begin 4570 OUTPUT Uut;”RFG:AMPL2 7DBM” !emulating the mobile 4580 OUTPUT Uut;”RFG:OUTP ‘AUX RFOUT’” 4590 OUTPUT Uut;”CONF:OFL:RFIN “;Trickloss 4600 OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Arfcn 4610 OUTPUT Uut;”CELL:CALL:TCH:TSL 2” 4620 OUTPUT Uut;”CELL:CALL:ORIGINATE” 4630 OUTPUT Uut;”SERV:LATCH:SEL ‘g_pulse_start_trig’” 4640 OUTPUT Uut;”SERV:LATCH:VALUE 1431” 4650 OUTPUT Uut;”SERV:LATCH:SEL ‘g_pulse_stop_trig’” 4660 OUTPUT Uut;”SERV:LATCH:VALUE 1281” 4670 OUTPUT Uut;”SERV:LATCH:SEL ‘g_tx_slot’” 4680 OUTPUT Uut;”SERV:LATCH:VALUE 5” 4690 OUTPUT Uut;”SERV:LATCH:SEL ‘g_mux_a_cntl’” 4700 OUTPUT Uut;”SERV:LATCH:VALUE 75” 4710 OUTPUT Uut;”SERV:LATCH:SEL ‘g_hop_to_bch’” 4720 OUTPUT Uut;”SERV:LATCH:VALUE 1536” 4730 OUTPUT Uut;”RFG:MOD:PULS ‘EXT’” 4740 END IF 4750 IF Func$=”ARFCN” THEN !These commands simulate a channel change by 4760 OUTPUT Uut;”CELL:CALL:TCH:ARFCN “;Arfcn !re-tuning the generator 4770 OUTPUT Uut;”SERV:LATCH:SEL ‘g_tx_slot’” 4780 OUTPUT Uut;”SERV:LATCH:VALUE 5” 4790 OUTPUT Uut;”SERV:LATCH:SEL ‘g_mux_a_cntl’” 4800 OUTPUT Uut;”SERV:LATCH:VALUE 75” 4810 OUTPUT Uut;”SERV:LATCH:SEL ‘g_hop_to_bch’” 4820 OUTPUT Uut;”SERV:LATCH:VALUE 1536” 4830 END IF 4840 IF Func$=”TXLEV” THEN !These commands simulate a Tx Level Change 4850 OUTPUT Uut;”CONF:OFL:RFIN “;Trickloss 4860 END IF 4870 IF Func$=”TXOFF” THEN !Dissable the TCH to simulate turning the 4880 OUTPUT Uut;”CELL:CALL:END” !mobile off 4890 END IF 4900 IF Func$=”CABLE” THEN 4910 PRINT 4920 PRINT “Connect a short cable from the Agilent 8922M/S AUX RF OUT” 4930 PRINT “to the RF IN/OUT port” 4940 PRINT 4950 PRINT “Cycle instrument power when testing is complete” 4960 PRINT 4970 PRINT “Press Return when ready” 4980 PRINT 4990 INPUT Dummy$ 5000 END IF 5010 SUBEND 5020 ! 5030 !============================================================ 5040 !end of program

2-49

GPIB Tutorial and Examples

Transient Settling Times

The following transient settling (wait times) should be considered when executing GPIB programs from an external controller or using the built-in IBASIC controller to execute programs.

NOTE During query loops (especially for IBASICapplications),itisrecommendedtouseaWAIT

statement like WAIT Delta_t, where Delta_t is user defined (i.e. WAIT 0.5 ! wait 0.5 seconds).

1 Each of the following operations requireschecking thata certain state has been reached

before continuing with other GPIB commands: a) Endinga Call. Wait for CELL CONTROL Call Status to be ’INACTIVE’and then

check for Call Status RR to be ’BCCH’.

OUTPUT 714;”CELL:CALL:END” REPEAT WAIT Delta_t OUTPUT 714;”CELL:CALL:STATUS:STATE?” ! Query the Call Status ENTER 714;Query$ UNTIL Query$=”””INACTIVE””” IF (Query$=”””INACTIVE”””) REPEAT WAIT Delta_t OUTPUT 714;”CELL:CALL:STAT:RR?” ! Query the RR Call Status ENTER 714;Query$ UNTIL Query$=”””BCCH””” END IF

b) Originating a Call. Must wait for CELL CONTROL Call Status to be

’CONNECTED’:

OUTPUT 714;”CELL:CALL:ORIG” ! Answer call when the mobile rings REPEAT WAIT Delta_t OUTPUT 714;”CELL:CALL:STATUS:STATE?” ! Query the Call Status ENTER 714;Query$ UNTIL Query$=”””CONNECTED”””

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GPIB Tutorial and Examples

Transient Settling Times

c) Setting the Agilent 8922M/S to an Activated state. Must wait for the CELL

CONTROL Signaling (RR) Call Status to be ’BCCH’.

OUTPUT 714;”DISP CCON” OUTPUT 714;”CCON:STAT ’ACTIVATED’” DISP ”Waiting for HP 8922M/S to provide BCCH. . .” REPEAT WAIT Delta_t OUTPUT 714;”CELL:CALL:STAT:RR?” ! Query the RR Call Status ENTER 714;Query$ UNTIL Query$=”””BCCH”””

d) Setting the Agilent 8922M/S back to a Settable state. Must wait for the field to

change its state.

OUTPUT 714;”CCON:STAT ’SETTABLE’” REPEAT WAIT Delta_t OUTPUT 714;”CCON:STAT?” ! Query the Cell Configure state ENTER 714;Query$ UNTIL Query$=”””SETTABLE”””

e) Doing a PRESET (*RST). Must make sure the call is ended (See (a)). f) Running a Bit Error Test measurement. Must wait for STOP after a RUN is

executed to query any measurement results.

OUTPUT 714;”DISP BET” OUTPUT 714;”TRIG:BET:MODE ’RUN’” REPEAT WAIT Delta_t OUTPUT 714;”TRIG:BET:MODE?” ! Query the Bit Error Test Trigger mode ENTER 714;Query$ UNTIL Query$=”””STOP”””

g) Querying measurements in SINGLE or CONT (continous) mode. Refer to the

section for querying measurements through GPIB.

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GPIB Tutorial and Examples

Transient Settling Times

2. The following operations may affect how much wait time is needed between GPIB or

IBASIC commands.

a) IBASIC operation - especially tight query loops b) Continuous measurements

i. DSP Analyzer - Phase, Amplitude and Data Bits measurements ii. Output RF Spectrum measurements Option 006 only iii. Pulse On/Off Ratio measurements Option 006 only iv. Spectrum Analyzer measurements Option 006 only v. Oscilloscope measurements vi. CW measurements vii. AF Analyzer measurements

c) Signaling operations:

i. SACCH measurements ii. Intercell Handovers iii. Intracell Handovers iv. Trace views are active

3. When performing thefollowing operations, include a wait statement for a maximumof

the period of time given, before issuing the next command. a) Executing Loopback functions - loopback on and off: 1 second

OUTPUT 714,”CELL:AUD:LOOP:OFF” ! loopback off WAIT 1

OUTPUT 714,”CELL:AUD:LOOP:FE” ! on with frame erasure WAIT 1

OUTPUT 714,”CELL:AUD:LOOP:NOFE” ! on without frame erasure WAIT 1

b) Changing Audio Speech Configurations to ’ECHO’: 0.5 second

OUTPUT 714,”CELL:AUD:SPE:CONF ’ECHO’ WAIT 0.5

c) Changing Audio Speech Configurations to ’PRBS’: 2 seconds

OUTPUT 714,”CELL:AUD:SPE:CONF ’PRBS’ WAIT 2

d) Setting the MS TX power Level: 1 second

OUTPUT 714,”CELL:MS:TLEV 7” WAIT 1

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GPIB Tutorial and Examples

Transient Settling Times

e) Arming DSP Analyzer, Output RF Spectrum or Pulse On/Off measurements in

Single mode from IBASIC - after sendingthe Arm command wait approximately 5 seconds.

OUTPUT 714,”TRIG:ASTate ’ARM’” WAIT 5

f) IMEI Request: 10 seconds

OUTPUT 714,”MSIN:MS:IMEI:REQ”

- WAIT 10

g) TMSI Reallocation: Query TMSI value (should change within 10 seconds)

i. Read TMSI string OUTPUT 714,”MSIN:PAG:TMSI?” ii. Send TMSI Reallocation command OUTPUT

714,”MSIN:PAG:TMSI:REAL”

iii. Wait until OUTPUT 714,”MSIN:PAG:TMSI?” returns a new string

1 10 seconds maximum

We expect users, operating remotely, to make measurements in single mode, mainly for speed reasons. However, if you operate in continuous (CONT) measurement mode and you change a parameter that affects the measurement result, then (at a maximum) the third measurement result queried will be an outcome of the new setup and not the previous setup.

2-53

GPIB Tutorial and Examples

Transient Settling Times

2-54

AF Analyzer Subsystem

3-1

AF Analyzer Subsystem

3-2

Continued Over

AF Analyzer Subsystem

3-3

AF Analyzer Subsystem

AIN

Description Selects/queries the state of the front panel AUDIO IN LO BNC connector. FLOAT means

AUDIO IN LO will be used to generate ﬂoating input signal (that is NOT referenced to a common ground signal). GND means AUDIO IN LO will be connected to a common ground signal

Syntax AFANalyzer:AIN?

AFANalyzer:AIN <string>

Options ‘FLOAT’ | ‘GND’

DEMPhasis

Description Selects/queries the AF ANalyzer DE-EMPhasis state. Syntax AFANalyzer:DEMPhasis?

AFANalyzer:DEMPhasis <string>

Options ’750 US’ | ’OFF’

DEMPhasis:GAIN

Description Selects/queries the DE-EMPhasis GAIN selection. Typically, this is selected

automatically, based on audio level.

Syntax AFANalyzer:DEMPhasis:GAIN?

AFANalyzer:DEMPhasis:GAIN <string>

Options ’0 DB’ | ’10 DB’ | ’20 DB’ | ’30 DB’

DETector

Description Selects/queries the AF Analyzer Detectorwhich isused for all AF Analyzer measurements. Syntax AFANalyzer:DETector?

AFANalyzer:DETector <string>

Options ’RMS’ | ’PK+’ | ’PK-’ | ’PK+-/2’ | ’PK+-MAX’ |

’PK+ HOLD’ | ’PK- HOLD’ | ’PK+-/2 HD’ | ’PK+-MX HD’

3-4

DETector:PKLocation

Description Selects/queries the PeaK DETector Location. Syntax AFANalyzer:DETector:PKLocation?

AFANalyzer:DETector:PKLocation <string>

Options ’FILTERS’ | ’DE-EMP’

DETector:SETTling

Description Selects/queries the DETector SETTling mode. Syntax AFANalyzer:DETector:SETTling?

AFANalyzer:DETector:SETTling <string>

AF Analyzer Subsystem

DETector:PKLocation

Options ‘SLOW’ | ‘FAST’

Where;

• SLOW is useful for low frequency audio measurements.

• FAST is useful for higher frequency audio measurements.

ELResistor

Description Sets/queries the External Load Resistor assumed for measuring watts of power into an

external load resistor. Default GPIB and display unit is Ohms.

Syntax AFANalyzer:ELResistor?

AFANalyzer:ELResistor <real [units]> | [:FNUM]

Options Refer Appendix B.

3-5

AF Analyzer Subsystem

FILTer1

Description Selects/queries the AF Analyzer Filter 1. Syntax AFANalyzer:FILTer1?

AFAN:FILT1? AFANalyzer:FILTer1 <string> AFAN:FILT1 <string>

Options ‘20HZ HPF’ | ’50HZ HPF’ | ’300HZ HPF’

FILTer2

Description Selects/queries the AF Analyzer Filter 2. Syntax AFANalyzer:FILTer2?

AFAN:FILT2? AFAN:FILT2 <string> AFANalyzer:FILTer2 <string>

Options ’300HZ LPF’ | ’3KHZ LPF’ | ’15KHZ LPF’| ’>99KHZ LP’

GTIMe

Description Sets/queries the AF ANalyzer Gate TIMe (AF Cnt Gate).

Default GPIB unit is seconds (S). Default display unit is milli-seconds (MS).

Syntax AFANalyzer:GTIMe?

AFANalyzer:GTIMe <real [units]> | [:FNUM]

Options Refer Appendix B.

3-6

AF Analyzer Subsystem

INPut

Description Selects/queries the AF ANalyzer INPut. This selection determines what signal is to be

measured by the AF ANalyzer as well as for the oscilloscope.

Syntax AFANalyzer:INPut?

AFANalyzer:INPut <string>

Options ’SCOPE IN’ | ’FM DEMOD’ | ’PLS DEMOD’ | ’AUDIO IN’ |

’AUDIO OUT’| ’AM MOD IN’ | ’SPEECH IN’ | ’SPEECHOUT’

INPut:GAIN

Description Selects/queries the INPut GAIN. This is typically selected automatically based on audio

level.

Syntax AFANalyzer:INPut:GAIN?

AFANalyzer:INPut:GAIN <string>

Options ’0 DB’ | ’20 DB’ | ’40 DB’

SMPoint

Description Selects/queries the Scope Measurement Point. This selection determines where in the

hardware block diagram the oscilloscope is making the desired measurement.

Syntax AFANalyzer:SMPoint?

AFANalyzer:SMPoint <string>

Options ’DE-EMP’ | ’FILTERS’ | ’INPUT’ | ’NOTCH’

NOTCh:GAIN

Description Selects/queries the NOTCh GAIN. This istypically selected automatically based on audio

level.

Syntax AFANalyzer:NOTCh:GAIN?

AFANalyzer:NOTCh:GAIN <string>

Options ’0 DB’ | ’10 DB’ | ’20 DB’ | ’30 DB’ | ’40 DB’

3-7

AF Analyzer Subsystem

RANGing

Description Selects/queries the RANGing (Gain Cntl) STATe. Syntax AFANalyzer:RANGing?

AFANalyzer:RANGing <string>

Options ’AUTO’ | ’HOLD’

Where;

• AUTO results in gain selections being made automatically based on audio level.

• HOLD causes all gain selections to maintain their present state for either manual selection or until AUTO is selected.

SPEaker:MODE

Description Selects/queries the SPEaker ALC MODE. Syntax AFANalyzer:SPEaker:MODE?

AFANalyzer:SPEaker:MODE <string>

Options ’ON’ | ’OFF’

NOTE This command is not available for the Agilent 8922S.

SPEaker:VOLume

Description Selects/queries the SPEaker VOLume. Syntax AFANalyzer:SPEaker:VOLume?

AFANalyzer:SPEaker:VOLume <string>

Options ’POT’ | ’OFF’

Where;

• POT means the SPEaker VOLume is controlled via the front panel VOLUME control.

• OFF means the SPEaker VOLume is turned off, independent of the front panel VOLUME control.

NOTE This command is not available for the Agilent 8922S.

3-8

AF Generator Subsystem

4-1

AF Generator Subsystem

4-2

AF Generator Subsystem

AMPLitude

Description Sets/queries the AF Generator Audio Output AMPLitude, which willbe present atthe front

panel AUDIO OUT connector. GPIB unit is Volts. Display units are V and mV. Default display unit is mV.

Syntax AFGenerator:AMPLitude?

AFGenerator:AMPLitude <integer [units]> | [:FNUM]

Options Refer to Appendix B.

COUPling

Description Selects/queries the AF Generator Audio Output COUPling Syntax AFGenerator:COUPling?

AFGenerator:COUPling <string>

Options ‘AC’ | ‘DC’

FREQuency

Description Sets/queries the AF Generator Audio Output, which will be present at the front panel

AUDIO OUT connector. Default GPIB unit is HZ. Default display unit is KHZ.

Syntax AFGenerator:FREQuency?

AFGenerator:FREQuency <integer [units]> | [:FNUM]

Options Refer to Appendix B.

4-3

AF Generator Subsystem

FREQuency

4-4

Audio Frequency Commands (Measure Subsystem)

5-1

Audio Frequency Commands (Measure Subsystem)

5-2

Continued Over

Audio Frequency Commands (Measure Subsystem)

5-3

Audio Frequency Commands (Measure Subsystem)

ACLevel

Description Sets the AC Level MEASurement attributes.

GPIB unit is V. Display units are dBm, V, mV, uV, dBuV, W; default unit is V. Queries the AC Level MEASurement result for AF Analyzer inputs. (AFAN:INP) that are in units of AC level.

Syntax MEASure:AFRequency:ACLevel?

MEASure:AFRequency:ACLevel[:MM] | [:AVG] | [:MET]

Options Refer to Appendices D, F and G.

Description Sets the AM Depth MEASurementattributes.Queries the AM Depth MEASurementresult

for AF Analyzer inputs (AFAN:INP) that are units of percent. GPIB unit is %(PCT). Display units are %(PCT).

Syntax MEASure:AFRequency:AM?

MEASure:AFRequency:AM[:MM] | [:AVG] | [:MET]

Options Refer to Appendices D, F and G.

DCAM

Description Sets the DC AM Level MEASurement attributes. Queries the DC Level MEASurement

result for AF Analyzer inputs (AFAN:INP) that are units of percent. GPIB unit is %(PCT). Display units are %(PCT).

Syntax MEASure:AFRequency:DCAM?

MEASure:AFRequency:DCAM[:MM] | [:AVG] | [:MET]

Options Refer to Appendices D, F and G.

5-4

Audio Frequency Commands (Measure Subsystem)

DCFM

Description Sets the DC FM Level MEASurement attributes. Queries the DC Level MEASurement

result for AF Analyzer inputs (AFAN:INP) that are units of Hertz. GPIB unit is HZ. Display units are KHZ, HZ; default unit is HZ.

Syntax MEASure:AFRequency:DCFM?

MEASure:AFRequency:DCFM[:MM] | [:AVG] | [:MET]

Options Refer to Appendices D, F and G.

DCVolts

Description Sets the DC VoltsMEASurement attributes.Queries the DC VoltsMEASurement result for

AF Analyzer inputs (AFAN:INP) that are units of DC Volts. GPIB unit is V. Display units are dBm, V, mV, uV, dBuV, W; default unit is V.

Syntax MEASure:AFRequency:DCVolts?

MEASure:AFRequency:DCVolts[:MM] | [:AVG] | [:MET]

Options Refer to Appendices D, F and G.

DISTortion

Description Sets the DISTortion MEASurement attributes. Queries the DISTortion MEASurement

result. GPIB and Display units are dB and percent (PCT). Default HP-IB and display unit is PCT.

Syntax MEASure:AFRequency:DISTortion?

MEASure:AFRequency:DISTortion[:MM] | [:AVG] | [:MET]

Options Refer to Appendices D, F and G.

5-5

Audio Frequency Commands (Measure Subsystem)

Description Sets the FM deviation MEASurement attributes.Queries the FM deviation MEASurement

result for FM DEMOD AF Analyzer. GPIB unit is HZ. Display units are kHZ, HZ; default unit is HZ.

Syntax MEASure:AFRequency:FM?

MEASure:AFRequency:FM[:MM] | [:AVG] | [:MET]

Options. Refer to Appendices D, F and G

FREQuency

Description Sets the Audio FREQuency MEASurement attributes. Queries the Audio FREQuency

MEASurement result. GPIB unit is HZ. Display units are KHZ, HZ; default unit is HZ.

Syntax MEASure:AFRequency:FREQuency?

MEASure:AFRequency:FREQuency[:MM] | [:AVG] | [:MET]

Options Refer to Appendices D, F and G.

SELect

Description Selects/queries the Audio FRequency SELected measurement. NOTE: to get valid

measurements for DC AM, DC FM and DC Volts, this ﬁled must be set to ’DC LEVEL’ and the AF Analyzer Input (AFAN:INP) is set to look at an AM, FM, or voltage source (respectively).

Syntax MEASure:AFRequency:SELect?

MEASure:AFRequency:SELect <string>

Options ’AF FREQ’ | ’DC LEVEL’ | ’DISTN’ | ’SINAD’

5-6

Audio Frequency Commands (Measure Subsystem)

SINad

Description Sets the SINad MEASurement attributes. Queries the SINad MEASurement result.

GPIB and Display units are dB and percent (PCT) Default GPIB and Display unit is dB

Syntax MEASure:AFRequency:SINad?

MEASure:AFRequency:SINad[:MM] | [:AVG] | [:MET]

Options Refer to Appendices D, F and G.

SINad

5-7

Audio Frequency Commands (Measure Subsystem)

SINad

5-8

Bit Error Test Subsystem

6-1

Bit Error Test Subsystem

6-2

Agilent 8922P Programmers Guide

Specifications and Main Features

Frequently Asked Questions

User Manual