Understanding Test Failures | Agilent Technologies S GSM, 8922M

Verifying Performance

Understanding Test Failures

Understanding Test Failures

This section is intended to be used in conjunction with the Agilent 8922 Series Assembly Level Repair Guide for assembly level repair and troubleshooting. If a performance test fails and hardware is suspected, the following table is a guideline to help identify the hardware assemblies most likely to cause each failure. Before replacing an assembly, the memory card diagnostics (supplied with the Assembly Level Repair Guide) should also be run to help verify which assembly is defective.

ASSEMBLIES TESTED (P=Primary S=Secondary)

Performance Test

A2

A3

A4

A5

A6

A9

A1

A12

A13

A14

A15

A16

A17

A18

A19

A23

A24

A25

A26

A27

1

Sig Gen Level

S

S

P

S

P

S

S

S

S

Sig Gen Spectral Purity

S

S

S

S

S

S

S

S

S

Sig Gen Pulse Mod

S

P

S

P

S

S

S

S

S

S

Sig Gen .3 GMSK

P

S

S

S

S

S

S

S

S

P

AF Generator

S

S

AF Analyzer

P

P

S

Oscilloscope

S

S

RF Analyzer Power

S

P

RF Analyzer GMSK Mod

P

S

P

S

S

RF Analyzer Pulse Demod

S

P

S

S

Spectrum Analyzer

S

S

S

P

S

3-13

Image 88

Agilent Technologies S GSM, 8922M manual Understanding Test Failures, Assemblies Tested P=Primary S=Secondary

Contents

User’s Guide Agilent Technologies 8922M/S GSM Test Set Agilent Part No JanuaryPage Contents Screens Keys Connectors Appendix a Contents-6 Warranty Responsibilities of the Customer Restricted Rights Legend Electromagnetic Compatibility EMC Information Declaration of Conformity Safety Information Do not Operate in AN Explosive Atmosphere Safety Symbols ISM 1-A Sales and Service Offices Canada Agilent Technologies 8922M/S Documentation Description Typeface Conventions Installing Your Agilent 8922M/S Using this Chapter Fuses and Power Cords Voltage Selection Card and Fuse Installation Other FusingLine Voltage Fuse Selection Power Cords Installation Overview Rear View Connections Access Config Screen High-stability timebase set-up General Information Making Measurements Making Measurements Test Mode Agilent Technologies 8922M/S Operating ModesActive Cell CW Generator Agilent 8922M/S Operating Modes Active CELL+ Test MODE+ CW GENERATOR+ Active Cell Making a Call From the Mobile Phone to the Agilent 8922M/S Active Cell Mode Making a Call From the Agilent 8922M/S to the Mobile Phone Shift , Cell Config MS Info Changing Channel, Timeslot, and the Transmit Level Mobile phone Test Mode Select Test Mode Mobile Phone Receiver Testing Using Test Mode CW Generator Measurements GSM SpecificMeasurements Ancillary Measurements Measurement Peak Power MeasurementsMethod Phase Frequency ErrorPhase and Frequency Error Measurements Measurement Method Power Ramp Mask Measurements Power Ramp Measurements Measurement Summary FailedPassed Blank field Pulse Measurements Bit Error Rate Bit Error Rate Measurement Measurements 31,4 Output RF Spectrum Measurements Measurements 32 dB 51 dB 70 dB 39 dBm 27.5 37 dBm ≤ 33 dBm Method Spectrum Analyzer Measurement Scope Oscilloscope Measurements Audio Audio Measurements CW Measurements Out port If You Have Problems with a Measurement Is a Message Line displayed at the top of the screen? If You Have Problems with a Measurement Trigger Timing a Trigger Timing B Trigger Range For Pulsed RF Is an Error Message Displayed in the Sync Status field? Possible Solutions to Sync Status Errors Solution 1 Trigger Timing Solution 2 Midamble Sync Solution 3 Level Solution 4 Amplitude Envelope If FM Errors Advanced Features Other Screens ⎛ RFin 20 ⎞ Advanced Features Measurements Using MakingSynchronized External Servlatchval Unexpected Operations Advanced Features Advanced Features Advanced Features Verifying Performance About This Chapter Setting up the Tests Getting the Right Equipment Equipment HP/Agilent Model Number Installing and Operating the Software To Load the Program Using Compatibility SwitchUnderstanding the Tests Back Conversion Gpib Addresses Forward ConversionTo Run the Program 1 Type RUN, press Enter Test 01 Signal Equipment Required Generator Level Things To Check In Case Of ProblemsUnderstanding the Tests Theory of the Test Test 02 Signal Generator Spectral Purity Understanding the Tests Test 06 Audio Equipment Required Frequency Analyzer Test 07 Oscilloscope Equipment Required Test 08 RF Analyzer Equipment Required Level Test 09 RF Analyzer Equipment Required Gmsk Modulation Pulse Demodulation Test a RF Analyzer Equipment RequiredTest B Spectrum Analyzer Option 006 only Equipment Required Understanding Test Failures Assemblies Tested P=Primary S=Secondary RF Generator Frequency Specifications Agilent Technologies 8922M/S SpecificationsGSM900 Functionality Output SWR Spectral Purity Pulse Modulation DB Pulse Modulation Agilent 8922M only AM for Level Control Agilent 8922M Only CW RF Power Measurements RF In/Out Only RF Analyzer Frequency SpecificationsCW RF Frequency Measurement Power Measurement Accuracy Peak/Transmitter Carrier Power MeasurementPulse ON/OFF Ratio Measurement Requires Option Amplitude Envelope Measurement Accuracy ON/OFF 40 dB, RF In/Out onlyInaccuracy due to Noise for overshoots ≤ 1 dB Phase and Frequency Measurements Gmsk Data Recovery Agilent 8922M only FM Demodulation Output Agilent 8922M only Pulse Demodulation Output Agilent 8922M only Dynamic Range dB Spectrum Analyzer Specifications Option Span Bandwidth Audio Analyzer Frequency Measurement Specifications Audio Source Frequency SpecificationsOutput Level DC Voltage Measurement AC Voltage MeasurementDistortion Measurement Audio Filters Oscilloscope SpecificationsAudio Detectors General Specifications Remote Programming Using both arms to lift instrument Operating Environment Fixed Reference Mode Reference SpecificationsTunable Reference Mode Agilent Technologies 8922M/S Speciﬁcations Screens Field Types Data Entry Field Types Audio Scope In selects the Scope in Measure front-panel Meas Reset Meas Cntl Speaker ALC Speaker Vol See Also Keys High LIMIT, LO LIMIT, AVG Speech Choices None Results Bit ErrorSelected measurement type CRC or FE Res Type Measure Control Bit Error This field is not featured in the Agilent 8922S 11/19. Ratio/Count Ratios Meas Cntl Bit Error Cell Configuration GSM Amplitude Field StateArfcn Aux Bcch BCC Range Through Control Ch LACRange 10. MA1 11. MA2 MAIO1MAIO2 MCC Settable Cell Configuration E-GSM, DCS 1800, PCS Activated Cell Conﬁguration E-GSM, DCS 1800, PCS BCC Base Station Colour Code is displayed in this ﬁeld Number 1 MA1 MAIO1 Cell Control Active Cell Active Cell TestMode CW Generator GSM/DCS1800/P Only Range GSM900GSM Call See Also Speciﬁcations Range Through 6 , 1, and 7 are used for call maintenance TX Level Mobile Timeslot Mobile Decode Errs Cell Control Active Cell +See Also Cell Control Single/Hop Cell Control Test Mode Choices GSMDCS PCS Channel TX Lev Cell Control CW Generator Shown will not correspond to the channel in amplitude Single Other Settings Cell Control Caller Call Status TCH State Connect DRX DTXOr off Execute Inactive Active Mode 19. MMLoc Upd Ident Auth Tmsi Choices CCITT-15 2 CCITT-23 Reset Call RACHsTiming Err Counts Control Choices Based on the TX Level field Cell Control Signaling Speech Test Mode Choices Timeslot Configure Aux RF Although a power cycle is recommended Aux RF Out O Config CntlOffset OPT Choices 13 MHz 10 MHz RF IN/Out Service Time Amplitude Expected Input CW MeasurementCW Freq, CWFreqErr CW Power Frequency Expected Input Meas Reset Meas CntlCntl IN/OUT port when executing this function RF IN/OUT Fast Bit Error Mobile Burst Delay range 0 through Configuration SpecificationChoices Bits FF at Start Form Feed Inst EchoLine Feed Lines/Page See Also Keys Print Choices SerialParallel Print Title Stop data transmission from the computer to the instrument Choices 300 600 1200 2400 4800 9600 19200 SerialIbasic control of the serial input port Stop the instrument from transmitting to the computer Logging Measurement Sync Be the lowest frequency Arfcn in the hop sequence Burst Sel Burst Used Demod Arm First BitSee Also Screens Meas Sync Hopped TCH Arfcn Cntl Midamble To the selected Midamble or User Defined Sync Pattern Sync Pattern Start Position Trig DelayTrig Qual Message MS Information / Signaling Authentication ChoicesMode Applies if Special Option H05 is fitted Implements the authentication algorithm specified in Rec Ciphering Imsi Attach/DetachLast LAI Location MS Band CapabilityMS Revision MS Imsi MS Information / Signaling MS Sres RandBS Sres Oscilloscope, Main Controls Meas Reset ControlsMarker Time/div Oscilloscope, Trigger Controls Auto/Norm Cont/SingleLevel div Pre-Trig Screens Oscilloscope, Marker Controls Peak+ Marker ToPosition Freq Offset Output RF Spectrum, Main View Option 006 OnlySync Status Output RF SpectrumSingle/Cont View Output RF Spectrum, Trace View Option 006 Only SyncStatus Phase and Frequency Error Multiburst OFF ON/OFF OFF Phase and Frequency Error Multi-burst on Done Errors Peak PhaseError Mean Maximum Minimum Last Peak phase RMS phase Burst Only Choices Wanted Bursts Phase/Freq, Phase ErrMarker Pos Frequency error Phase/Freq, Data Bits Polarity Trg Timing Pwr Ramp Rise Edge Mask Pk TX Pwr Pwr Ramp, Top 2 dB Pulse Puls Rise Puls Fall Pwr Ramp, Fall Edge 100 Pwr Ramp Summary Ampl1-12 Power over the useful bits in the measured burst FlatnessSummary Time1-12 103 Pwr Ramp Pulse Option 006 Only Fall Pos Meas Sync Sync Status See Also Making Measurements Solving Problems MessagesRise Pos 106 Pwr Ramp Pulse Rise Option 006 Only MarkerPos POnOffRise Pwr Ramp Pulse Fall Option 006 Only POnOffFall RF Generator / RF Analyzer AF Gen RF Generator / RF Analyzer RF Analyzer AGC ModeAccuracy Hop Mode Hop Offset Value Hop TrigRange RF Input Atten Hold RF Generator / RF Analyzer RF GenDAC Value Hop Mode Hop Trig DC AM FrequencyGmsk Range 10.0 to 1015.0 MHz Pulse RF Output Service SMS Cell Broadcast Default for message 2 isCode Language Message Broadcast 121 Spectrum Analyzer, Main Controls Option 006 Only Max Hold Meas Reset Center FreqRef Level Span Spectrum Analyzer, RF Gen Controls Option 006 Only Spectrum Analyzer, Marker Controls Option 006 Only Center Freq Marker To Next Peak Marker To Range To 10 divisions Spectrum Analyzer, Auxiliary Controls Auto Hold Input Atten DB Input Atten Choices GSM900 GSM, DCS 1800 Video BW10 dB 20 dB 30 dB 40 dB Tests 130 Keys Key Map Cancel Function KeysAdrs Assign HI Limit END CallHold Incr SET LO LimitTo Set a Low Limit To Turn Off or On a Low limit MS Info MeterPrint To Recall an Instrument Setup Recall REF SET Certain valueTo Set a Reference To Turn a Reference Off or On To Save an Instrument Setup RFG/RFASave Tests Local Keys L1, L2That is currently displayed To Assign a Local Key Global Keys To Assign a Global Key Units Keys Connectors Front-Panel Connectors of the Agilent Technologies 8922M/S See Also Screens RF Generator/RF Analyzer, RF Gen Clock Demodulation OUT Agilent 8922M OnlyClock Modulation Agilent 8922M Only See Also Clock Input Data Demodulation OUT RequirementsFM Demodulation OUT AM/SPEECH Modulation Agilent 8922M Only Screens Audio Audio In Lo Modulation Monitor Demodulation OUT Audio OUT MON/SPEECH Agilent 8922M OnlyPulse Demodulation OUT Pulse Modulation Agilent 8922M Only Measure Trigger in Measure Valid Demodulation OUT Rear-Panel Connectors of the Agilent Technologies 8922M/S See Also Speciﬁcations REF Emmi BUS Agilent 8922M Only Pin Usage Function To/From Electrical Characteristics of the DAI/EMMI Emmi Connector Pin Numbers See AlsoLogical State Voltage Current Gpib General Purpose Agilent OPT 001 REF OUT 131 Scope Specifications Signal Descriptions for System BUS DEMODDATA, Demodclk Demodvalid FpdataFpclock Gexttrig Pulsemodin Pin 6 InputRPBURSTT1 T1-Pin 26, T2-Pin 8 Select/Control Rpdmodtrig Pin 7 Input RpgsmrstinPin 3 Input Rpgsmrst RPHOPADRS0, through RPHOPADRS9, RPHOPADRS10 Rphopinhibit Pin 30 InputRprstseq Pin 11 Input Rprxhop Pin 10 InputRpseqhop Pin 29 Input Rptxhop RPTXD, RprxdSeqtrigout RIG Usememextt 27 Pin InputInput Timing Diagrams Digital Demodulation Timing Specification Table Digital Demod Timing Diagram Frequency Hop Timing Specification Table RF Generator Hop Address Source = Ext Timing Diagram RF Analyzer Hop Address Source = Ext Timing Diagram RF Generator Hop Address Source = Int Timing Diagram RF Analyzer Hop Address = Int Timing Diagram Reset Hop Once Address Source = Int Timing Diagram Reset and Hold Hop Address Source = Int Timing Diagram Hop Inhibit Address Source = Int Timing Diagram Messages Communication Failures Firmware Error Firmware revision error in module Sync Status Protocol Error Messages Timers Following is a brief description of the timers Call Control Timers Timer Values Physical Layer Disconnects DisconnectsData Link Layer Disconnects Layer Disconnects Management LayerDisconnects Call Control Layer Disconnects Host I/O Error Operating System Error Unknown Errors Protocol Log Examples Of Typical Calls Monitoring For Protocol Failure And Recovery During Test Instrument Basic This Chapter Tests Subsystem Agilent Technologies 8922M/S Instrument Basic OverviewIbasic Programs That Use the Tests Subsystem Programs That Do Not Use the Tests Subsystem Configuration and Instrument Control Controlling HP 8922M/S Functions Connected Instruments Hardware Connections Agilent 8922M/S Configuration For Programming Connecting the Serial Port Serial Port Configuration for ProgrammingSerial Port Connections Configuring Configuring an IBM-Compatible PC With HP AdvanceLinkSet Parity to none Set Data Bits to Set the Global Conﬁguration settings Verifying Serial Port To IbasicOperation Controller screen Loading, Storing, and Running Storing Ibasic Programs On Memory Cards Running Your Program Loading a Test ProcedureStoring an Ibasic Program On a Gpib Disk Drive Loading, Storing, and Running Test Procedure Files Making or Deleting Test Procedure and Test Library Files Running a Test Making a Test Procedure FileSequence Accessing the Agilent Access the Tests screen by pressing Entering and Editing Programs8922M/S’s Ibasic Controller Using HP-IB PROGram Interface Commands Other Prog Commands Download Program for Computers using GpibPreparing the Agilent 8922M/S to Receive Programs Downloading a Program Into the Agilent 8922M/S Entering Commands Line-by-line Entry and Editing Using Memory Cards Memory Cards Types of Memory Cards Inserting a Memory CardMemory Card Part Numbers Type Initializing an Sram Memory Card Initialize Internal Setting the Write-Protect Switch Setting the Sram Write-Protect SwitchProcedure for Backing Up a Memory Card Backing Up the Memory-Card Programs Filenames are prefixed with a lowercase l Memory Card Battery Replacing the Memory-Card BatteryContaminate battery contacts in the memory-card To the manufacturer’s instructions Programming and Using the Tests Subsystem Procedure FilesTests Subsystem File Descriptions Code Files Tests Subsystem Tests Subsystem File RelationshipMain Tests Subsystem Screen Programming and Using the Tests Subsystem Ibasic Programming Setting Up the Test Execution ConditionsProgram Status Test Execution Conditions To Have Testing Stop or Continue on a UUT FailureTo Continue or Pause After Each Test To Have Test Results Appear on a CRT or Printer To Select Printing ConditionsTo Enter Comments in the Output Heading Field Tests Screen of the Agilent 8922M/S Using AutostartMaking a Test Sequence Editing Test Specifications Test-Sequence Screen Editing Test Parameters Edit Sequence Screen on the HP/AgilentChapter, select the following keys Configuring External Instruments for Gpib Control Edit Parameters Screen on the HP/Agilent 17 on Program Structure for Tests Subsystem Programs Instrument-Configuration ScreenGeneral Organization Program Example Program Listing RUN Through the Sequence of Tests Test Linenumber Command Description Program Listing Explanation Programming and Using the Tests Subsystem Programming and Using the Tests Subsystem Creating a Library And Default Procedure File Creating a Procedure File With No Library Appendix a Purpose Equipment Required Connecting the Agilent 8922M to the HP/Agilent 37900D Figure A-1 Cabling Setup Front View Camp On Setting Up the Agilent Technologies 8922MLatch Setting Up the HP/Agilent 37900D Card SLP Check How to Obtain a Protocol LogConnection Logging Start-upMake Call Real Time System Information sentReceived End Call Additional Information Remote Control of Protocol Logging Protocol Log of a Typical Call Primitive Protocol Log of a Typical Call PH-DL Phdata Sdcch UI P0 CR0 SAPI0 M0 Frame MM-CC Mmdata CC Call Confirmed 83 08 Frame Command Frame MM-RR Rrsync FrameFrame DL-PH Phdata Sdcch I Nr1 Ns1 P0 CR1 SAPI0 M0 RR Assignment DL-RR Dldata Facchf CC Alerting 83 41 Frame DL-RR Dldata Facchf CC Connect 83 07 Frame Goes to NEW TCH2 Call setup is completeDL-RR Dlrelease Facchf Frame Inter-cell handover to TCH1, Single TCH on Arfcn 30, slot Intra-cell handover is complete Agilent 8922M/S configures to new TCH DL-RR Dldata Facchf RR Handover Complete 06 2c 00 Frame Inter-cell handover complete Call termination2449761 Port Frame CC-HST Ccrelind Frame PH-DL Readytosend Facchf Frame Protocol Log of a Typical Call Glossary Arfcn CRC Gmsk Rssi Glossary Index Index-2 Index-3 Index-4 Index-5 Index-6 Index-7 Index-8 Index-9 Index-10 Index-11