8922P

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

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