HP 37718A Manuale Utente

HP 37718AOmniBER 718User’s GuideDSn/SONETOperation

xContents

90Making MeasurementsMeasuring Jitter Tolerance2 If you are performing jitter tolerance on the SONET signal, set up theSONET transmit and receive inte

91Making MeasurementsMeasuring Jitter ToleranceHOW TO: View the Results1 Choose the results FORMAT.If is chosen, a plot of the jitter tolerance resul

92Making MeasurementsMeasuring Jitter TransferMeasuring Jitter TransferDescription: You can perform Jitter transfer measurements at each of the four D

93Making MeasurementsMeasuring Jitter TransferHOW TO: Perform Jitter Transfer CalibrationNOTE The CALIBRATION should always be carried out with LEVEL

94Making MeasurementsMeasuring Jitter Transfer4 Choose JITTER on thedisplay.5 Choose the NUMBER OF POINTS at which jitter is transmitted (3 to55)6 Ch

95Making MeasurementsMeasuring Jitter TransferHOW TO: Start the Jitter Transfer MeasurementNOTE The Jitter Transfer measurement must be started within

96Making MeasurementsMeasuring Jitter TransferHOW TO: View the Results1 Choose the results FORMAT.If is chosen, a plot of the jitter transfer results

44 Storing, Logging and Printing

98Storing, Logging and PrintingSaving Graphics Results to Instrument StoreSaving Graphics Results to InstrumentStoreDescription Graphical representati

99Storing, Logging and PrintingRecalling Stored Graph ResultsRecalling Stored Graph ResultsDescription Results stored from a previous measurement can

11 Setting the InterfacesThis chapter tells you how to set the instrumentinterfaces to match the network being tested.

100Storing, Logging and PrintingRecalling Stored Graph ResultsThe top row of the display comprises five fields:Store Memory location in whichthe display

101Storing, Logging and PrintingViewing the Bar Graph DisplayViewing the Bar Graph DisplayDescription All the graphic results obtained during the meas

102Storing, Logging and PrintingViewing the Bar Graph DisplayZoom The width, in minutes, of each "bar" in the bar graph,controlled by / .Cur

103Storing, Logging and PrintingViewing the Graphics Error and Alarm SummariesViewing the Graphics Error and AlarmSummariesDescription The error and a

104Storing, Logging and PrintingViewing the Graphics Error and Alarm SummariesStart The start time and date of the test, that produced thedisplayed re

105Storing, Logging and PrintingLogging Graph DisplaysLogging Graph DisplaysDescription The bar graphs and error and alarm summaries can be logged to

106Storing, Logging and PrintingLogging Graph Displays4 Choose to confirm or abort the print.To confirm the print and only print the portion of the grap

107Storing, Logging and PrintingLogging ResultsLogging ResultsDescription Test Period LoggingIf degradations in system performance can be observed at

108Storing, Logging and PrintingLogging Results • Optional Internal printer fitted into the instrument front cover(Option 602) • External HP-IB printer

109Storing, Logging and PrintingLogging Resultsprinter paper).7 Choose the logging DEVICE.If RS232 is chosen, see "Logging Results to RS-232-C Pr

2Setting the InterfacesSetting DSn Transmit InterfaceDescription DSn transmit interface settings should match network equipmentsettings of Rate, Termi

110Storing, Logging and PrintingLogging on DemandLogging on DemandDescription When is pressed the chosen results are logged to the chosenlogging devic

111Storing, Logging and PrintingLogging on DemandIf PARALLEL is chosen, see "Logging Results to Parallel(Centronics)Printer " page 116.If D

112Storing, Logging and PrintingLogging Jitter Tolerance ResultsLogging Jitter Tolerance ResultsDescription The jitter auto tolerance feature provides

113Storing, Logging and PrintingLogging Jitter Tolerance Results7 Choose 80 character column width ( ) or 40 character columnwidth ( ) according to th

114Storing, Logging and PrintingLogging Jitter Transfer ResultsLogging Jitter Transfer ResultsDescription The jitter transfer feature provides jitter

115Storing, Logging and PrintingLogging Jitter Transfer Resultswidth ( ) according to the capabilities of your printer.8 Choose the same baud SPEED as

116Storing, Logging and PrintingLogging Results to Parallel (Centronics) PrinterLogging Results to Parallel(Centronics) PrinterDescription If Option 6

117Storing, Logging and PrintingLogging Results to HP-IB PrinterLogging Results to HP-IB PrinterDescription If Option 601, Remote Control Interface, i

118Storing, Logging and PrintingLogging Results to Internal PrinterLogging Results to Internal PrinterDescription If Option 602, Internal Printer is fi

119Storing, Logging and PrintingLogging Results to RS-232-C PrinterLogging Results to RS-232-C PrinterDescription If Option 601, Remote Control Interf

3Setting the InterfacesSetting DSn Transmit Interface3 If DS1 or DS3 is chosen, choose the required OUTPUT LEVEL.4 If you have chosen 2 Mb/s as the SI

120Storing, Logging and PrintingPrinting Results from DiskPrinting Results from DiskDescription The results and alarms you logged to Disk can be print

121Storing, Logging and PrintingConnecting an HP 850C DeskJet Printer to a Parallel PortConnecting an HP 850C DeskJetPrinter to a Parallel PortDescrip

122Storing, Logging and PrintingChanging Internal Printer PaperChanging Internal Printer PaperDescription The printer accepts rolls of thermal paper w

123Storing, Logging and PrintingChanging Internal Printer Paper4 Put the paper roll on the spindle such that the sensitive side will be onthe undersid

124Storing, Logging and PrintingChanging Internal Printer Paper6 Ifthe printerpaperisincorrectlyaligned, raisethe printermechanismfront cover to relea

125Storing, Logging and PrintingCleaning Internal Printer Print HeadCleaning Internal Printer Print HeadDescription The print head should be cleaned w

126Storing, Logging and PrintingCleaning Internal Printer Print Head

55 Using Instrument and Disk Storage

128Using Instrument and Disk StorageStoring Configurations in Instrument StoreStoring Configurations in InstrumentStoreDescription You can store measure

129Using Instrument and Disk StorageTitling Configuration in Instrument StoreTitling Configuration in InstrumentStoreDescription When storing configurati

4Setting the InterfacesSetting SONET Transmit InterfaceSetting SONET Transmit InterfaceDescription SONET transmit interface settings should match the

130Using Instrument and Disk StorageRecalling Configurations from Instrument StoreRecalling Configurations fromInstrument StoreDescription Having stored

131Using Instrument and Disk StorageFormatting a DiskFormatting a DiskDescription Only 1.44M, MS-DOS compatible disks can be used in the HP 37718A.Any

132Using Instrument and Disk StorageLabeling a DiskLabeling a DiskDescription You can label your disks for ease of identification.HOW TO: 1 Choose DISK

133Using Instrument and Disk StorageManaging Files and Directories on DiskManaging Files and Directories on DiskDescription File and Directory structu

134Using Instrument and Disk StorageManaging Files and Directories on DiskAccessing Directories and Files1 Choose DISK OPERATION .2 Choose FILE TYPE y

135Using Instrument and Disk StorageManaging Files and Directories on DiskNOTE Title Bar - File types displayed and current directory. (cannot behighl

136Using Instrument and Disk StorageManaging Files and Directories on DiskRenaming a File on DiskDescription Files can be renamed as an aid to efficien

137Using Instrument and Disk StorageManaging Files and Directories on DiskDeleting a File on DiskDescription Obsolete files can be deleted as an aid to

138Using Instrument and Disk StorageManaging Files and Directories on DiskDeleting a Directory on DiskDescription Obsolete Directories should be delet

139Using Instrument and Disk StorageManaging Files and Directories on DiskAdding Descriptors to Disk FilesDescription When storing configurations or gr

5Setting the InterfacesSetting SONET Transmit Interface4 Choose FOREGROUND , BACKGROUND MAPPING and type of payload.Mapping may be selected from a pic

140Using Instrument and Disk StorageSaving Graphics Results to DiskSaving Graphics Results to DiskDescription Graphics results can be saved to a file o

141Using Instrument and Disk StorageSaving Graphics Results to Disk2 Choose the directory in which to save the graphics results. See"Accessing Di

142Using Instrument and Disk StorageSaving Data Logging to DiskSaving Data Logging to DiskDescription Data Logging can be saved to a file on disk. The

143Using Instrument and Disk StorageSaving Configurations to DiskSaving Configurations to DiskDescription You can store a large number of measurement se

144Using Instrument and Disk StorageRecalling Configuration from DiskRecalling Configuration from DiskDescription If a configuration has been stored on d

145Using Instrument and Disk StorageRecalling Graphics Results from DiskRecalling Graphics Results from DiskDescription If graphic results have been s

146Using Instrument and Disk StorageCopying Configuration from Instrument Store to DiskCopying Configuration fromInstrument Store to DiskDescription If

147Using Instrument and Disk StorageCopying Configuration from Instrument Store to Disk3 To copy the configuration from instrument to Disk choose .If yo

148Using Instrument and Disk StorageCopying Configuration from Disk to Instrument StoreCopying Configuration from Disk toInstrument StoreDescription If

149Using Instrument and Disk StorageCopying Configuration from Disk to Instrument Store4 To copy the configuration from Disk to instrument, choose .Ifyo

6Setting the InterfacesSetting SONET Transmit InterfaceIf you have chosen 2 Mb/s, DS1 or DS3 under Mapping, the Framedchoice is expanded to provide a

150Using Instrument and Disk StorageCopying Graphics Results from Instrument Store to DiskCopying Graphics Results fromInstrument Store to DiskDescrip

151Using Instrument and Disk StorageCopying Graphics Results from Instrument Store to Disk4 If you wish to view the graphic results at a later date vi

152Using Instrument and Disk StorageCopying Graphics Results from Instrument Store to Disk

66 Selecting and Using "Other" Features

154Selecting and Using "Other" FeaturesCoupling Transmit and Receive SettingsCoupling Transmit and Receive SettingsDescription When generati

155Selecting and Using "Other" FeaturesSetting Time & DateSetting Time & DateDescription When making Bit error measurements and reco

156Selecting and Using "Other" FeaturesEnabling Keyboard LockEnabling Keyboard LockDescription You can protect the measurement settings from

157Selecting and Using "Other" FeaturesEnabling Beep on Received ErrorEnabling Beep on Received ErrorDescription You can have an audible ind

158Selecting and Using "Other" FeaturesSuspending Test on Signal LossSuspending Test on Signal LossWhen running a test, you can choose to su

159Selecting and Using "Other" FeaturesSetting Error Threshold IndicationSetting Error Threshold IndicationDescription When making error mea

7Setting the InterfacesSetting Jitter Transmit InterfaceSetting Jitter Transmit InterfaceDescription: You can add jitter to the transmitted DSn or SON

160Selecting and Using "Other" FeaturesSetting Screen Brightness and ColorSetting Screen Brightness and ColorDescription The HP 37718A scree

161Selecting and Using "Other" FeaturesDumping Display to DiskDumping Display to DiskDescription The chosen display may be stored on disk in

162Selecting and Using "Other" FeaturesDumping Display to Disk4 Choose the directory in which to save the Screen Dump. See"Accessing Di

163Selecting and Using "Other" FeaturesRunning Self TestRunning Self TestDescription Before using the HP 37718A to make measurements, you ca

164Selecting and Using "Other" FeaturesRunning Self TestNOTE If any or all of these connections are not made the HP 37718A will FAILSelf Tes

165Selecting and Using "Other" FeaturesRunning Self Test4 Press toactivatethe SelfTest. TESTSTATUS RUNNINGwill be displayed.The information

166Selecting and Using "Other" FeaturesRunning Self Test

Appendix A7 STS-1 SPE BackgroundPatternsThe following tables list the background patterns available when selecting specificforegrounds.

168STS-1 SPE Background PatternsTable 2 STS-1 SPE Background PatternsForeground Background choice inForeground TUG-3Background choice in otherAU-3STS-

Appendix B8 ETSI/ANSI TerminologyA table of ETSI terms with their ANSI equivalents.

8Setting the InterfacesSetting Jitter Transmit Interface5 Choose the modulation source.If adding jitter to the DSn signal and is chosen, connectthe e

170ETSI/ANSI TerminologyETSI/ANSI Conversion and Equivalent Terms ETSI/ANSI Conversion and Equivalent TermsIntroductionThe terminology used on the ins

171ETSI/ANSI TerminologyETSI/ANSI Conversion and Equivalent TermsMS-RDI Line FERF / RDI-LMultiplexer Section Overhead Line OverheadNetwork Node Interf

172ETSI/ANSI TerminologyETSI/ANSI Conversion and Equivalent TermsNOTE: VC is an ETSI abbreviation for Virtual Container and an ETSI /ANSI abbreviation

Index173AAlarm scanDSn, 83SONET, 82Alarms & errorsDSn add, 50DSn payload add, 50SONET add, 49Analysis measurementDSn, 71DSn payload, 71SONET, 70AP

174IndexGG.821 analysis measurement, 71G.826 analysis measurement, 71Graphicscopy results frominstrument to disk,150logging displays, 105recall result

Index175Overhead sequencerepeat run, 27single run, 27PPaper changeinternal printer, 122Parallel portconnecting Centronics printer, 121Path overheadcap

176IndexAPS messages, 64DCC insert, 65errors & alarms DSn, 50errors & alarms SONET, 49MSP messages, 64overhead BER test, 68overhead capture, 2

Hewlett-Packard Sales and Service OfficesIf you need technical assistance with aHewlett-Packard test and measurementproduct or application please cont

Hewlett-Packard Sales and Service Offices (cont’d)Finland:Tel: (90) 88 721France:Tel: (0)1 69.82.60.60Germany:Tel: (0180) 532 62-33Greece:Tel: 30-1-72

About This EditionThis is the 2nd edition ofthe DSn/SONET UsersGuide. It documents theproduct as of December1998. Edition dates are asfollows:1st Edit

9Setting the InterfacesSetting Wander Transmit InterfaceSetting Wander Transmit InterfaceDescription: You can add Wander to the 2 Mb/s DSn signal and

Printed in U.K. 12/9837718-90022In This BookThis book tells you how to select and usethe various instrument functions available.

Hewlett-Packard LimitedTelecommunications Networks Test DivisionSouth QueensferryWest Lothian, Scotland EH30 9TG Copyright Hewlett-Packard Ltd.1998Al

10Setting the InterfacesSetting Wander Transmit Interface6 Choose the WANDER MASK setting required.You can choose the wander modulating frequency and

11Setting the InterfacesSetting SONET THRU ModeSetting SONET THRU ModeDescription THRU mode is used to non-intrusively monitor SONET lines where nopro

12Setting the InterfacesSetting SONET THRU Mode2 Make the PAYLOAD OVERWRITE choice required.If STS-3cSPE, STS-1 SPE, VT-6,VT-2 or VT-1.5is chosen, the

13Setting the InterfacesUsing Smart TestUsing Smart TestDescription The Smart Test function can help speed-up configuringthe instrument intwo ways.1 A

14Setting the InterfacesUsing Smart Test4 In SONET mode the incoming signal will be identified on the top lineof the display, and under this the payloa

15Setting the InterfacesSetting DSn Receive InterfaceSetting DSn Receive InterfaceDescription DSn Receive interface settings should match the network

16Setting the InterfacesSetting DSn Receive Interface5 Choose the PAYLOAD TYPE.If is required must be chosen.If is chosen, the DSn test signal must

17Setting the InterfacesSetting SONET Receive InterfaceSetting SONET Receive InterfaceDescription SONET Receive interface settings should match the ne

18Setting the InterfacesSetting Jitter Receive InterfaceSetting Jitter Receive InterfaceDescription: Jitter and error measurements are made simultaneo

19Setting the InterfacesSetting Extended Jitter Receive InterfaceSetting Extended Jitter ReceiveInterfaceDescription: Extended Jitter measurements are

User’s Guide DSn/SONET OperationHP 37718AOmniBER 718

20Setting the InterfacesSetting Wander Receive InterfaceSetting Wander Receive InterfaceDescription: You can measure Wander at all DSn and SONET rates

22 Selecting Test Features

22Selecting Test FeaturesUsing Transmit Overhead SetupDescription You can set an overhead byte to a known static state to aidtroubleshooting, for exam

23Selecting Test FeaturesUsing Transmit Overhead SetupIf (Transport Overhead) is chosen, choose the STS-1 to bedisplayed.Many bytesin and are unlabel

24Selecting Test FeaturesUsing Receive Overhead MonitorUsing Receive Overhead MonitorDescription When first connecting to a SONET network, a start up c

25Selecting Test FeaturesUsing Receive Overhead MonitorIf BYTE NAMES is chosen, the labels for the overheadbytes are displayed.4 If POH (Path Overhea

26Selecting Test FeaturesSetting Overhead Trace MessagesSetting Overhead Trace MessagesDescription You can insert a data message to verify portions of

27Selecting Test FeaturesGenerating Overhead SequencesGenerating Overhead SequencesDescription You may insert a pattern into a functional group of ove

28Selecting Test FeaturesGenerating Overhead Sequences6 Start the sequence by choosing .NOTE When you start the sequence illustrated, one Out of Frame

29Selecting Test FeaturesUsing Receive Overhead CaptureUsing Receive Overhead CaptureDescription Section, Line and Path overhead provide network suppo

ivThis book tells you how to select the features that you want to use for your test.The selections available are presented in the following groups: •

30Selecting Test FeaturesUsing Receive Overhead Capture- captures activity after the firstoccurrence of a deviation fromyour specified overhead state. C

31Selecting Test FeaturesAdding Frequency Offset to SONET SignalAdding Frequency Offset to SONET SignalDescription Frequency offset can be added to th

32Selecting Test FeaturesAdding Frequency Offset to SONET SignalTributary Offset ±100 ppm1 Choose the amount of tributary offset required.You can set

33Selecting Test FeaturesAdding Frequency Offset to the DSn SignalAdding Frequency Offset to the DSn SignalDescription You can add frequency offset to

34Selecting Test FeaturesSetting up Signaling BitsSetting up Signaling BitsDescription When transmitting 2.048 Mb/s signals with timeslot-16 CAS (PCM3

35Selecting Test FeaturesSetting up Signaling BitsSONET Operation1 Choose on the display2 Choose MAPPING or and VTPAYLOAD or on the display.3 I

36Selecting Test FeaturesSetting up Signaling Bits2 Choose SIGNAL or , and PAYLOAD TYPEon the display3 Choose TEST SIGNAL or on the display.4 Set the

37Selecting Test FeaturesSetting Transmit Structured Payload/Test SignalSetting Transmit Structured Payload/Test SignalDescription Structured DSn Payl

38Selecting Test FeaturesSetting Transmit Structured Payload/Test Signal5 Choose the B/G PATTERN.The B/G PATTERN in the non test 56/64 kb/s timeslots

39Selecting Test FeaturesSetting Receive Structured Payload/Test SignalSetting Receive Structured Payload/TestSignalDescription Structured DSn Payload

Contentsv1 Setting the InterfacesSetting DSn Transmit Interface 2Setting SONET Transmit Interface 4Setting Jitter Transmit Interface 7Setting Wander T

40Selecting Test FeaturesSetting TransmitNx64kb/s/N x 56 kb/s Structured Payload/Test SignalSetting Transmit N x 64 kb/s/N x 56 kb/sStructured Payload

41Selecting Test FeaturesSetting TransmitNx64kb/s/N x 56 kb/s Structured Payload/Test Signal6 The B/G PATTERN in the non-test 56/64 kb/s timeslots is

42Selecting Test FeaturesSetting Receive N x 64 kb/s/N x 56 kb/s Structured Payload/Test SignalSetting Receive N x 64 kb/s/N x 56 kb/sStructured Paylo

43Selecting Test FeaturesInserting an External DSn Payload/Test SignalInserting an External DSn Payload/Test SignalDescription You can insert a DSn si

44Selecting Test FeaturesInserting an External DSn Payload/Test SignalInsert 2 Mb/s or DS1 (Unstructured SONET Payload)1 Connect the external payload

45Selecting Test FeaturesInserting an External DSn Payload/Test SignalStructured SONET Payload2 Set up the required transmit SONET interface. See &quo

46Selecting Test FeaturesDropping an External Payload/Test SignalDropping an External Payload/Test SignalDescription You can drop a DSn signal from th

47Selecting Test FeaturesDropping an External Payload/Test SignalDrop 2 Mb/s /DS1 (Unstructured SONET Payload)1 Connect the DEMUX port of the DSn mod

48Selecting Test FeaturesDropping an External Payload/Test SignalStructured SONET Payload2 Set up the required receive SONET interface. See "Sett

49Selecting Test FeaturesAdding Errors & Alarms at the SONET InterfaceAdding Errors & Alarms at the SONETInterfaceDescription Errors and alarm

viContentsInserting an External DSn Payload/Test Signal 43Dropping an External Payload/Test Signal 46Adding Errors & Alarms at the SONET Interface

50Selecting Test FeaturesAdding Errors & Alarms to the DSn Interface/DSn PayloadAdding Errors & Alarms to the DSn Interface/DSn PayloadDescrip

51Selecting Test FeaturesUsing FEAC CodesUsing FEAC CodesDescription The third C-Bit in subframe 1 is used as a FEAC channel, where alarmor status inf

52Selecting Test FeaturesUsing FEAC Codes3 Choose the FEAC CODE TYPE.4 Choose the MESSAGE from the choices displayed.If you chose a DS1 message an add

53Selecting Test FeaturesSetting DSn Spare BitsSetting DSn Spare BitsDescription Certain Spare Bits will cause the occurrence of a minor alarm whenrec

54Selecting Test FeaturesAdding Pointer AdjustmentsAdding Pointer AdjustmentsDescription The transmitted SPE or VT pointer value can be adjusted for t

55Selecting Test FeaturesAdding Pointer AdjustmentsOFFSET - You can frequency offset the line rate or the SPE/VT rate,relative to each other, thus pro

56Selecting Test FeaturesAdding Pointer AdjustmentsNote: SINGLE (A1), BURST (A2) and PHASE TRANSIENT(A3) are NonPeriodic Sequences.Initialization Peri

57Selecting Test FeaturesAdding Pointer AdjustmentsNOTE The following conditions apply for pointer sequence generation:The sequences can only be appli

58Selecting Test FeaturesAdding Pointer AdjustmentsT1.105 A3 PHASETRANSIENTGR-253 5031Phase transient pointer adjustment burst test sequence. Alladjus

59Selecting Test FeaturesAdding Pointer AdjustmentsNOTE For SPE pointers the sequence interval is selectable from 7.5 ms, 10, 20,30, 34 ms; 40 to 100

ContentsviiMeasuring Jitter Transfer 924 Storing, Logging and PrintingSaving Graphics Results to Instrument Store 98Recalling Stored Graph Results 99V

60Selecting Test FeaturesAdding Pointer AdjustmentsTable 1 Pointer Sequences Available with Selected MappingPOINTER SEQUENCEMAPPINGSPE VT6, VT2 VT1.5A

61Selecting Test FeaturesUsing Pointer Graph Test Function Using Pointer Graph Test FunctionPointer Graph shows the relative offset during the measure

62Selecting Test FeaturesUsing Pointer Graph Test FunctionIf, during a long term measurement (4 days), an event occurs at aparticular time each day, a

63Selecting Test FeaturesStressing Optical Clock Recovery CircuitsStressing Optical Clock RecoveryCircuitsDescription Ideally clock recovery circuits

64Selecting Test FeaturesGenerating Automatic Protection Switch MessagesGenerating Automatic ProtectionSwitch MessagesDescription You can program th

65Selecting Test FeaturesInserting & Dropping Data Communications ChannelInserting & Dropping DataCommunications ChannelDescription The Data C

66Selecting Test FeaturesInserting & Dropping Data Communications Channel

33 Making Measurements

68Making MeasurementsUsing Overhead BER Test FunctionUsing Overhead BER Test FunctionDescription You can perform a Bit Error Rate test on chosen bytes

69Making MeasurementsTest TimingTest TimingDescription There are two aspects to test timing: • Error results may be displayed as short term or cumulat

viiiContentsLabeling a Disk 132Managing Files and Directories on Disk 133Saving Graphics Results to Disk 140Saving Data Logging to Disk 142Saving Confi

70Making MeasurementsMaking SONET Analysis MeasurementsMakingSONETAnalysisMeasurementsDescription G.826, M.2101, M.2110 and M.2120 analysis results ar

71Making MeasurementsMaking DSn Analysis MeasurementsMaking DSn Analysis MeasurementsDescription G.821, G.826, M.2100, M.2110 and M.2120 analysis resu

72Making MeasurementsMeasuring FrequencyMeasuring FrequencyDescription The signal frequency and the amount of offset from the standard rate canbe meas

73Making MeasurementsMeasuring Optical PowerMeasuring Optical PowerDescription Optical power measurement can be performed on the SONET signalconnected

74Making MeasurementsMeasuring Round Trip DelayMeasuring Round Trip Delay Description: The time taken for voice traffic to pass through the network is

75Making MeasurementsMeasuring Round Trip Delay4 Choose ACTION to start the measurement.If measuring on an SONET interface, the results are available

76Making MeasurementsMonitoring Signaling BitsMonitoring Signaling BitsDescription The HP 37718A receiver can be used to monitor the state of signalin

77Making MeasurementsMeasuring Service Disruption TimeMeasuring Service Disruption Time Description: Protection switching ensures that data integrity

78Making MeasurementsMeasuring Service Disruption TimeNOTE At DS1 and DS3 Service Disruption results are only available forUnstructured payloads.Error

79Making MeasurementsMeasuring Service Disruption Time4 Press to start the measurement.5 Invoke the protection switch.6 View the results on the displ

Contentsix7 STS-1 SPE Background Patterns8 ETSI/ANSI Terminology ETSI/ANSI Conversion and Equivalent Terms 170

80Making MeasurementsPerforming a SONET Tributary ScanPerforming a SONET Tributary ScanDescription Tributary Scan tests each tributary for error free

81Making MeasurementsPerforming a SONET Tributary Scan4 The Tributary Scan results can be viewed on thedisplay.The Scan can be started on thedisplay o

82Making MeasurementsPerforming an SONET Alarm ScanPerforming an SONET Alarm ScanDescription SONET Alarm Scan tests each channel for alarm free operat

83Making MeasurementsPerforming a DSn Alarm ScanPerforming a DSn Alarm ScanDescription DSn Alarm Scan tests each channel for the following alarms:Fram

84Making MeasurementsMeasuring JitterMeasuring Jitter Description: Jitter and error measurements are made simultaneously when a jitteroption is fitted.

85Making MeasurementsMeasuring Jitter3 If performing a Jitter Tolerance measurement, See “Measuring JitterTolerance” page 89.If performing a Jitter T

86Making MeasurementsMeasuring Extended JitterMeasuring Extended Jitter Description: Extended jitter measurements are made in a jitter bandwidth of 0.

87Making MeasurementsMeasuring WanderMeasuring Wander Description: Accurate Wander measurements require a Wander reference derivedfrom the SONET Clock

88Making MeasurementsMeasuring Wander4 If measuring wander at a SONET rate set up the SONET receiveinterface. See, “Setting SONET Receive Interface”

89Making MeasurementsMeasuring Jitter ToleranceMeasuring Jitter ToleranceDescription: The jitter auto tolerance feature provides jitter tolerance meas