HP 83236B Manuale Utente

1HP 83236B PCS InterfaceCDMA/PCS Base Station Test Software, User’s GuideSoftware Version A.02.01HP Part No. 83236-90121Printed in U. S. A.March 19

Contents10 4 TroubleshootingOverview 64Errors When Loading and Running the Software 65Memory Overflow Errors 65Test System Configuration Errors at R

111 Getting StartedFollow the steps in this chapter to load and run the CDMA/PCS BS Test Software, to connect the test equipment, and to make initia

12 Chapter 1, Getting StartedIntroductionIntroductionWho should use the CDMA/PCS BS Test Software?If you are installing, commissioning, or maintainin

13Chapter 1, Getting StartedIntroductionRequired EquipmentFigure 1 You must supply:Means to controlbase station andread FER.CDMA PCS Base Station.C

14 Chapter 1, Getting StartedStep 1: Make ConnectionsStep 1: Make ConnectionsMake the connections between the elements of the Test System and the bas

15Chapter 1, Getting StartedStep 2: Load and Run the CDMA/PCS BS Test SoftwareStep 2: Load and Run the CDMA/PCS BS Test SoftwareThe next step is to

16 Chapter 1, Getting StartedStep 2: Load and Run the CDMA/PCS BS Test SoftwareFigure 4 Position the cursor at Choices:and select PCSCDMA.Position t

17Chapter 1, Getting StartedStep 2: Load and Run the CDMA/PCS BS Test SoftwareNavigation of the CDMA/PCS BS Test SoftwareAfter the Software has load

18 Chapter 1, Getting StartedStep 3: Configure the SoftwareStep 3: Configure the SoftwareThe first time you run the Software you must enter informati

19Chapter 1, Getting StartedStep 3: Configure the SoftwareScroll to and select TX Measurement Path Loss. Enter the loss (through cables, couplers, a

2 Copyright © Hewlett-Packard Company 1996RESTRICTED RIGHTS LEGENDUse, duplication or disclosure by the U. S. Government is subject to restrictions a

20 Chapter 1, Getting StartedStep 3: Configure the SoftwareThis completes the required entries. You may now save your entries or press the Main Menu

21Chapter 1, Getting StartedStep 4: Perform CDMA TestsStep 4: Perform CDMA TestsNow that you have successfully run the Software and entered your con

22 Chapter 1, Getting StartedStep 4: Perform CDMA Tests

232 Making MeasurementsThis chapter contains descriptions of the most common receiver and transmitter tests performed on CDMA base station equipment

24 Chapter 2, Making Measurements

25Chapter 2, Making MeasurementsOverviewOverviewThis chapter presents measurement tasks most commonly performed when testing CDMA/PCS base station e

26 Chapter 2, Making MeasurementsAverage PowerAverage PowerOverview Average power is a time-averaged broadband measurement of the transmitted signal

27Chapter 2, Making MeasurementsAverage PowerSteps 1 Connect the equipment as shown in figure 6.2 In the main menu, enter the Base Station Channel n

28 Chapter 2, Making MeasurementsModulation Quality (Rho)Modulation Quality (Rho)Overview In this measurement, the modulated signal is compared to an

29Chapter 2, Making MeasurementsModulation Quality (Rho)Steps 1 Connect the equipment as shown in figure 8.2 In the main menu, enter the Base Statio

3In this Book This book documents the use of the CDMA/PCS Base Station Test Software sup-plied with the PCS Interface. It focuses specifically on th

30 Chapter 2, Making MeasurementsCode Domain PowerCode Domain PowerOverview The Code Domain Power measurement shows the relative power in each of the

31Chapter 2, Making MeasurementsCode Domain PowerSteps 1 Connect the equipment as shown in figure 10.2 In the main menu, enter the Base Station Chan

32 Chapter 2, Making MeasurementsCode Domain TimingCode Domain TimingOverview Similar to the Code Domain Power test, this measurement shows the timin

33Chapter 2, Making MeasurementsCode Domain TimingSteps 1 Connect the equipment as shown in figure 12.2 In the main menu, enter the Base Station Cha

34 Chapter 2, Making MeasurementsCode Domain PhaseCode Domain PhaseOverview Similar to the Code Domain Power measurement, this measurement shows the

35Chapter 2, Making MeasurementsCode Domain PhaseSteps 1 Connect the equipment as shown in figure 14.2 In the main menu, enter the Base Station Chan

36 Chapter 2, Making MeasurementsTransmit SpectrumTransmit SpectrumOverview It is often useful to look at the transmitter signal with the spectrum an

37Chapter 2, Making MeasurementsTransmit SpectrumSteps: Go to Spectrum Analyzer @ Present Chan1 Connect the equipment as shown in figure 16.2 In the

38 Chapter 2, Making MeasurementsTransmit SpectrumSteps: Go to Spectrum Analyzer & Enter Freq1 Connect the equipment as shown in figure 16.2 Turn

39Chapter 2, Making MeasurementsTransmit SpectrumNotes For either spectrum analyzer mode (Go To Spectrum Analyzer @ Present Chan or Go To Spectrum A

4 Conventions Used in this BookThe following terms are used throughout this book:• Test Set - the HP 8921A Cell Site Test Set.• Cellular Adapter - th

40 Chapter 2, Making MeasurementsReceiver SensitivityReceiver SensitivityOverview In this test, the CDMA generator sends a calibrated signal to the b

41Chapter 2, Making MeasurementsReceiver SensitivitySteps 1 Connect the equipment as shown in figure 19.2 In the main menu, enter the Base Station C

42 Chapter 2, Making MeasurementsReceiver Performance in Additive NoiseReceiver Performance in Additive NoiseOverview In this test, the CDMA signal g

43Chapter 2, Making MeasurementsReceiver Performance in Additive NoiseSteps 1 Make the equipment connections as shown in figure 21.2 On the main men

44 Chapter 2, Making MeasurementsSearch for PN OffsetSearch for PN OffsetOverview If you are unsure of the PN offset for the transmitter and channel

45Chapter 2, Making MeasurementsSearch for PN OffsetSteps 1 Connect the equipment as shown in figure 23.2 In the main menu, enter the Base Station C

46 Chapter 2, Making MeasurementsCheck Even-Second ClockCheck Even-Second ClockOverview Most CDMA transmitter tests require an Even-Second clock sign

47Chapter 2, Making MeasurementsCheck Even-Second ClockSteps 1 You can start with the connections shown in figure 24. You will get prompts from the

48 Chapter 2, Making MeasurementsCheck Even-Second Clock

493 Operating OverviewThis chapter describes general operation of the Software.Operating Overview

Contents 51 Getting StartedIntroduction 12Who should use the CDMA/PCS BS Test Software? 12Product Description 12Software Operation in Brief 12Requir

50 Chapter 3, Operating OverviewOverviewOverviewThis chapter provides detail on Software operations not covered in chapter 1, "Getting Started&q

51Chapter 3, Operating OverviewSelecting a PCS BandSelecting a PCS BandWith the HP 83236B PCS Interface, the Software supports several “channel plan

52 Chapter 3, Operating OverviewSelecting a PCS BandTable 1 Channel plans for PCS Band selections.PCS Band Channel Plan To calculate the transmitter

53Chapter 3, Operating OverviewCompensating for TX and RX Measurement Path LossCompensating for TX and RX Measurement Path LossThe Software can comp

54 Chapter 3, Operating OverviewSaving Configuration Information to MemorySaving Configuration Information to MemoryThe information about your setup

55Chapter 3, Operating OverviewLoading Configuration Information from MemoryLoading Configuration Information from MemoryThe information about your

56 Chapter 3, Operating OverviewPurging Configuration Information from MemoryPurging Configuration Information from MemoryThe information about your

57Chapter 3, Operating OverviewUsing AutostartUsing Autostart“Autostart” is a feature of the Test Set’s IBASIC controller and is used to customize t

58 Chapter 3, Operating OverviewViewing Instrument ConnectionsViewing Instrument ConnectionsIn setting up your Test System, you may have questions ab

59Chapter 3, Operating OverviewSetting the Test System “Beep”Setting the Test System “Beep”The Software can provide an audio tone (beep) to let you

Contents6 2 Making MeasurementsOverview 25Transmitter Measurements 25Receiver Measurements 25Other 25Average Power 26Overview 26Requirements 26Steps

60 Chapter 3, Operating OverviewAn Alternative Test-System-to-Base-Station Timebase ConfigurationAn Alternative Test-System-to-Base-Station Timebase

61Chapter 3, Operating OverviewAn Alternative Test-System-to-Base-Station Timebase ConfigurationFigure 25 114.3 MHz IF INI BASEBAND OUTAUXCWRF INIQ

62 Chapter 3, Operating OverviewAn Alternative Test-System-to-Base-Station Timebase Configuration

634 TroubleshootingUse this chapter if you have encountered Software errors or if you are questioning measurement results.Troubleshooting

64 Chapter 4, TroubleshootingOverviewOverviewUse table 2 to locate your problem or a received error message, then refer to the page number shown.Prob

65Chapter 4, TroubleshootingErrors When Loading and Running the SoftwareErrors When Loading and Running the SoftwareMemory Overflow ErrorsProblem:Th

66 Chapter 4, TroubleshootingErrors When Loading and Running the SoftwareTest System Configuration Errors at Runtime Problem:When it is first run, th

67Chapter 4, TroubleshootingErrors When Loading and Running the SoftwareOther Test System Configuration ErrorsProblem:Additional errors can be repor

68 Chapter 4, TroubleshootingErrors When Loading and Running the SoftwareMenu Screens in this Book do not Match the Screens that You SeeProblem:You m

69Chapter 4, TroubleshootingErrors While Attempting MeasurementsErrors While Attempting MeasurementsCDMA Measurement not CorrelatingProblem:If your

Contents 7Overview 36Requirements 36Steps: Go to Spectrum Analyzer @ Present Chan 37Steps: Go to Spectrum Analyzer & Enter Freq 38Notes 39Receive

70 Chapter 4, TroubleshootingErrors While Attempting Measurements4 Test System timebase reference not connected.Verify that you have access to the ba

71Chapter 4, TroubleshootingErrors While Attempting MeasurementsFrame Error Rate (Receiver Measurements)Problem:If your Test System is not set up co

72 Chapter 4, TroubleshootingErrors While Attempting Measurements5 RX PN Offset not set to zero.For receiver testing, the CDMA Generator is simulatin

73Chapter 4, TroubleshootingQuestionable Measurement ResultsQuestionable Measurement ResultsOverview Refer to the topics in this section if you are

74 Chapter 4, TroubleshootingQuestionable Measurement ResultsRho Measurements Sources of errors in rho measurement include the following:Input signal

75Chapter 4, TroubleshootingQuestionable Measurement ResultsSensitivity tests: random data not selected for signal sourceFor receiver sensitivity me

76 Chapter 4, TroubleshootingQuestionable Measurement Results

77GlossaryAccess Channel A reverse CDMA channel used by mobile stations for communicating to the base station. The access channel is used for short

Glossary78 Code Domain Analyzer An instrument that measures individual Walsh Channel characteristics in a CDMA channel. The Cellular Adapter can dis

79GlossaryFrame A basic timing interval in the system. For the Access channel, paging channel, and traffic channel, a frame is 20 ms long. For the

Contents8 3 Operating OverviewOverview 50Configuration Information 50Reference Information 50Selecting a PCS Band 51Steps 51Notes 51Compensating for

Glossary80 Personal Communication Services (PCS) Emerging wireless networks using digital modulation formats and operating in the frequency band bet

81GlossaryRho The measure of the waveform quality of a modulated signal in a CDMA system. A received signal is compared to an ideal, reference, s

Glossary82 Walsh Function One of 2N time-orthogonal binary functions (note that the functions are orthogonal after mapping 0 to 1, and 1 to −1).Wals

83Aaccess channeldefinition, 77Added White Gaussian Noisedefinition, 77added white gaussian noise, 42Autostart, 57definition, 77turning off, 57turni

Index84 front panel, 58instruments, 14rear panel, 58timebases, 60correlation, 69correlation errors, 69Ddata blockdefinition, 78descriptionproduct, 12

Index 85FFERdefinition, 78finite inpulse response filterdefinition, 78FIR filterdefinition, 78forward CDMA channeldefinition, 78forward linkdefinitio

Index86 Iinstrument connections, 14, 58intermediate frequencydefinition, 79LLoading Configuration Information, 55loading the software, 15Mmain menu s

Index 87Nnavigation of software menus, 17noise source, 42Noise, Added White Gaussiandefinition, 77Ooffset quadrature phase shift keyingdefinition, 79

Index88 QQPSKdefinition, 80quadrature phase shift keyingdefinition, 80quadrature spreadingdefinition, 80questionable measurement results, 73Rreceiver

Index 89TTest Setdefinition, 81timebaseconnections, 60timing, code domain, 32tone, audio, 59traffic channeldefinition, 81transmit spectrum, 36trigger

Contents 9Setting the Test System “Beep” 59Steps 59Notes 59An Alternative Test-System-to-Base-Station Timebase Configuration 60Steps 60Notes 60

Index90 WWalsh chipdefinition, 81Walsh coverdefinition, 81Walsh functiondefinition, 82Walsh symboldefinition, 82Zzero offset pilotdefinition, 82