HP HP 37718A - Manuals - manualsarea.com

Page 3 - User’s Guide DSn/SONET Operation

User’s Guide DSn/SONET Operation HP 37718AOmniBER 718

Page 4 - About This Book

iv This 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: • Transmit and receive interfaces • Test features, for example, the addition of errors and alarms to the testsignal • Measurements including test timi...

Page 5 - Contents; Setting the Interfaces

Contents v 1 Setting the Interfaces Setting DSn Transmit Interface 2Setting SONET Transmit Interface 4Setting Jitter Transmit Interface 7Setting Wander Transmit Interface 9Setting SONET THRU Mode 11Using Smart Test 13Setting DSn Receive Interface 15Setting SONET Receive Interface 17Setting Jitter Re...

Page 6 - Making Measurements

vi Contents Inserting an External DSn Payload/Test Signal 43Dropping an External Payload/Test Signal 46Adding Errors & Alarms at the SONET Interface 49Adding Errors & Alarms to the DSn Interface/DSn Payload 50Using FEAC Codes 51Setting DSn Spare Bits 53Adding Pointer Adjustments 54 Using Poi...

Page 7 - Measuring Jitter Transfer 92; Storing, Logging and Printing

Contents vii Measuring Jitter Transfer 92 4 Storing, Logging and Printing Saving Graphics Results to Instrument Store 98Recalling Stored Graph Results 99Viewing the Bar Graph Display 101Viewing the Graphics Error and Alarm Summaries 103Logging Graph Displays 105Logging Results 107Logging on Demand 1...

Page 9 - STS-1 SPE Background Patterns; ETSI/ANSI Conversion and Equivalent Terms 170

Contents ix 7 STS-1 SPE Background Patterns 8 ETSI/ANSI Terminology ETSI/ANSI Conversion and Equivalent Terms 170

Page 11 - Setting the Interfaces

1 1 Setting the Interfaces This chapter tells you how to set the instrumentinterfaces to match the network being tested.

Page 12 - Setting DSn Transmit Interface; Description

2 Setting the Interfaces Setting DSn Transmit Interface Description DSn transmit interface settings should match network equipmentsettings of Rate, Termination and Line Code and determine the Payloadto be tested. TIP: To set the Transmitter and Receiver to the same interface settingschoose . HOW TO:...

Page 13 - If DS1 or DS3 is chosen, choose the required OUTPUT LEVEL.

3 Setting the Interfaces Setting DSn Transmit Interface 3 If DS1 or DS3 is chosen, choose the required OUTPUT LEVEL. 4 If you have chosen 2 Mb/s as the SIGNAL rate, choose the requiredTERMINATION. (At all other signal rates the impedance is fixed). 5 If you have chosen 2 Mb/s or DS1 as the SIGNAL ra...

Page 14 - Setting SONET Transmit Interface

4 Setting the Interfaces Setting SONET Transmit Interface Setting SONET Transmit Interface Description SONET transmit interface settings should match the networkequipment settings of Rate, Wavelength and Mapping, determine thepayload to be tested and set background conditions to prevent alarmswhile ...

Page 15 - display

5 Setting the Interfaces Setting SONET Transmit Interface 4 Choose FOREGROUND , BACKGROUND MAPPING and type of payload. Mapping may be selected from a pictorial display by moving the cursor toMAPPING and pressing . Use and to move between STS Layer choice, VT Layer choice and Payload Layer choice. U...

Page 16 - Choose the PATTERN type and PRBS polarity.

6 Setting the Interfaces Setting SONET Transmit Interface If you have chosen 2 Mb/s, DS1 or DS3 under Mapping, the Framedchoice is expanded to provide a menu of framing types. 9 Choose the PATTERN type and PRBS polarity. 10 Choose the mapping required in the background (non-test) STS’s. 11 If VT map...

Page 17 - Setting Jitter Transmit Interface; Choose JITTER

7 Setting the Interfaces Setting Jitter Transmit Interface Setting Jitter Transmit Interface Description: You can add jitter to the transmitted DSn or SONET signal at 2 Mb/s,34 Mb/s, STS-3, OC-3, OC-12, and OC-48. You can source the jittermodulation internally or from an external source. HOW TO: 1 I...

Page 18 - If you choose

8 Setting the Interfaces Setting Jitter Transmit Interface 5 Choose the modulation source.If adding jitter to the DSn signal and is chosen, connect the external source to the MOD IN port of the DSn Jitter TX module.Up to 10 UI of external jitter modulation can be added at the MOD INport.If adding ji...

Page 19 - Setting Wander Transmit Interface; Set up the DSn transmit interface, choose CLOCK SYNC

9 Setting the Interfaces Setting Wander Transmit Interface Setting Wander Transmit Interface Description: You can add Wander to the 2 Mb/s DSn signal and the STS-3, OC-3,OC-12 or OC-48 SONET signal. HOW TO: DSn Wander (2 Mb/s) 1 Connect REF OUT on the SONET Clock module to REF IN on the DSnJitter TX...

Page 21 - Setting SONET THRU Mode

11 Setting the Interfaces Setting SONET THRU Mode Setting SONET THRU Mode Description THRU mode is used to non-intrusively monitor SONET lines where noprotected monitor points are available.As THRU mode locks some user settings, you must set SIGNAL RATE,STS rate, STS-1 SPE CHANNEL (if appropriate) b...

Page 23 - Using Smart Test

13 Setting the Interfaces Using Smart Test Using Smart Test Description The Smart Test function can help speed-up configuring the instrument intwo ways. 1 A Smartsetup feature that will attempt to configure the instrumentto receive the incoming signal. 2 A series of “links” that provide quick access...

Page 25 - Setting DSn Receive Interface

15 Setting the Interfaces Setting DSn Receive Interface Setting DSn Receive Interface Description DSn Receive interface settings should match the network equipmentsettings of Rate, Termination and Line Code and determine the Payloadto be tested. TIP: To set the transmitter and receiver to the same i...

Page 26 - is required

16 Setting the Interfaces Setting DSn Receive Interface 5 Choose the PAYLOAD TYPE.If is required must be chosen. If is chosen, the DSn test signal must be set up. See “Setting Transmit Structured Payload/Test Signal” page 37.If you chose 2 Mb/s, DS1 or DS3 as the PDH/DSn SIGNAL rate, theFRAMED choic...

Page 27 - Setting SONET Receive Interface

17 Setting the Interfaces Setting SONET Receive Interface Setting SONET Receive Interface Description SONET Receive interface settings should match the network equipmentsettings of Rate and Mapping, and determine the payload to be tested. TIP: If you wish to set the HP 37718A transmitter and receive...

Page 28 - Setting Jitter Receive Interface; or

18 Setting the Interfaces Setting Jitter Receive Interface Setting Jitter Receive Interface Description: Jitter and error measurements are made simultaneously when a jitteroption is fitted. The measurements are made on the normal input to theDSn or SONET receiver and the interface selections are the...

Page 29 - Setting Extended Jitter Receive Interface

19 Setting the Interfaces Setting Extended Jitter Receive Interface Setting Extended Jitter ReceiveInterface Description: Extended Jitter measurements are made in a jitter bandwidth of 0.1 Hzto 25 kHz. These measurements are made at the upper end of thestandard wander frequency range and the lower e...

Page 30 - Setting Wander Receive Interface

20 Setting the Interfaces Setting Wander Receive Interface Setting Wander Receive Interface Description: You can measure Wander at all DSn and SONET rates. An externaltiming reference should be selected on the or display to ensure accurate Wander results. HOW TO: 1 Choose an external timing referenc...

Page 31 - Selecting Test Features

Page 32 - Using Transmit Overhead Setup

22 Selecting Test Features Using Transmit Overhead Setup Description You can set an overhead byte to a known static state to aidtroubleshooting, for example to quickly check for "stuck bits" in pathoverhead bytes. Transport Overhead, Path Overhead, Trace Messagesand Labels can be set using t...

Page 34 - Using Receive Overhead Monitor

24 Selecting Test Features Using Receive Overhead Monitor Using Receive Overhead Monitor Description When first connecting to a SONET network, a start up confidence checkcan be made by viewing the behavior of all the overhead bytes. If theSONET network shows alarm indications, some diagnosis of the ...

Page 35 - If BYTE NAMES is chosen, the labels for the

25 Selecting Test Features Using Receive Overhead Monitor If BYTE NAMES is chosen, the labels for the overhead bytes are displayed. 4 If POH (Path Overhead) is chosen, choose the source of the overhead,SPE or VTSPE.J1 and J2 bytes can be monitored under Path Overhead or TraceMessages 5 If TRACE MESS...

Page 36 - Setting Overhead Trace Messages

26 Selecting Test Features Setting Overhead Trace Messages Setting Overhead Trace Messages Description You can insert a data message to verify portions of the network: J0 verifies the section overhead.J1 verifies the STS-1 SPE or STS-3c SPE path connection.J2 verifies the VT SPE path connection. HOW...

Page 37 - Generating Overhead Sequences; Choose the byte or bytes of overhead required.

27 Selecting Test Features Generating Overhead Sequences Generating Overhead Sequences Description You may insert a pattern into a functional group of overhead bytes fortesting or troubleshooting purposes. HOW TO: 1 Set up the SONET transmit interface and payload required. See“Setting SONET Transmit...

Page 38 - Start the sequence by choosing; N O T E

28 Selecting Test Features Generating Overhead Sequences 6 Start the sequence by choosing . N O T E When you start the sequence illustrated, one Out of Frame alarm and oneLoss of Frame alarm should occur every eight seconds. START

Page 39 - Using Receive Overhead Capture

29 Selecting Test Features Using Receive Overhead Capture Using Receive Overhead Capture Description Section, Line and Path overhead provide network support functions,responding dynamically to network conditions and needs. It is thereforeuseful to capture overhead activity on a frame by frame basis....

Page 40 - - captures activity after the first occurrence of a deviation from

30 Selecting Test Features Using Receive Overhead Capture - captures activity after the first occurrence of a deviation from your specified overhead state. Can be used for transient detection from aspecified expected state. 4 Up to 16 records of overhead state are provided. Each record willrepresent...

Page 41 - Adding Frequency Offset to SONET Signal; SONET Line Rate Offset; and

31 Selecting Test Features Adding Frequency Offset to SONET Signal Adding Frequency Offset to SONET Signal Description Frequency offset can be added to the SONET interface rate signal and tothe payload signal. HOW TO: SONET Line Rate Offset 1 Choose the amount of frequency offset required.You can se...

Page 43 - Adding Frequency Offset to the DSn Signal

33 Selecting Test Features Adding Frequency Offset to the DSn Signal Adding Frequency Offset to the DSn Signal Description You can add frequency offset to the interface DSn SIGNAL at all rates.Frequency Offset can be added at preset ITU values or as User definedvalues in the range ± 100 ppm. The pre...

Page 44 - Setting up Signaling Bits; Transmit a 2 Mb/s signal with user-defined signaling bits; on the

34 Selecting Test Features Setting up Signaling Bits Setting up Signaling Bits Description When transmitting 2.048 Mb/s signals with timeslot-16 CAS (PCM30 orPCM30CRC) multiframing the state of A,B,C,D signaling bits can be set.The signaling bits of all timeslots are set to the user-defined 4 bit va...

Page 45 - Transmit a DS1 payload signal with user-defined signaling bits

35 Selecting Test Features Setting up Signaling Bits SONET Operation 1 Choose on the display 2 Choose MAPPING or and VT PAYLOAD or on the display . 3 If UNSTRUCTURED is chosen set the 2M CAS ABCD bits value onthe display. If STRUCTURED is chosen set the 2M CAS ABCD bits value on the display. HOW TO ...

Page 47 - Setting Transmit Structured Payload/Test Signal

37 Selecting Test Features Setting Transmit Structured Payload/Test Signal Setting Transmit Structured Payload/Test Signal Description Structured DSn Payload/Test Signal settings determine the SONETpayload or the DSn test signal to be tested and set any background (nontest) conditions to prevent ala...

Page 49 - Setting Receive Structured Payload/Test Signal

39 Selecting Test Features Setting Receive Structured Payload/Test Signal Setting Receive Structured Payload/Test Signal Description Structured DSn Payload/Test Signal settings determine the SONETpayload or the DSn test signal to be tested. TIP: If you wish to set the HP 37718A transmitter and recei...

Page 51 - Signaling

41 Selecting Test Features Setting Transmit N x 64 kb/s/N x 56 kb/s Structured Payload/Test Signal 6 The B/G PATTERN in the non-test 56/64 kb/s timeslots is fixed asNUMBERED, that is, each timeslot contains a unique identificationnumber. Signaling 7 If a 2 Mb/s PAYLOAD with PCM30 or PCM30CRC framing...

Page 53 - Inserting an External DSn Payload/Test Signal; RATE

43 Selecting Test Features Inserting an External DSn Payload/Test Signal Inserting an External DSn Payload/Test Signal Description You can insert a DSn signal from external equipment into the SONETsignal, or you can insert 2 Mb/s or DS1 into the structured DSn signal, asshown in the table below. DS3...

Page 54 - MUX port. If DS1 connect to

44 Selecting Test Features Inserting an External DSn Payload/Test Signal Insert 2 Mb/s or DS1 (Unstructured SONET Payload) 1 Connect the external payload to the MUX port of the PDH/DSnTransmit module.If 2 Mb/s connect to 75 Ω MUX port. If DS1 connect to 100Ω MUX port. 2 Set up the required transmit ...

Page 56 - Dropping an External Payload/Test Signal

46 Selecting Test Features Dropping an External Payload/Test Signal Dropping an External Payload/Test Signal Description You can drop a DSn signal from the received payload or drop 2 Mb/s orDS1 from the structured DSn signal to external equipment as shown inthe table below. DS3 and 34 Mb/s can only ...

Page 59 - Adding Errors & Alarms at the SONET Interface

49 Selecting Test Features Adding Errors & Alarms at the SONET Interface Adding Errors & Alarms at the SONETInterface Description Errors and alarms can be added to the SONET interface signal duringtesting. HOW TO: 1 Set up the SONET transmit interface and payload required. See "Setting S...

Page 60 - Adding Errors & Alarms to the DSn Interface/DSn Payload

50 Selecting Test Features Adding Errors & Alarms to the DSn Interface/DSn Payload Adding Errors & Alarms to the DSn Interface/DSn Payload Description Errors and alarms can be added to the DSn interface/payload signalduring testing. HOW TO: 1 If SONET interface is chosen, set up the SONET tr...

Page 61 - Using FEAC Codes; Transmit an FEAC code

51 Selecting Test Features Using FEAC Codes Using FEAC Codes Description The third C-Bit in subframe 1 is used as a FEAC channel, where alarmor status information from the far-end terminal can be sent back to thenear-end terminal. The channel is also used to initiate DS3 and DS1 lineloopbacks at the...

Page 63 - Setting DSn Spare Bits

53 Selecting Test Features Setting DSn Spare Bits Setting DSn Spare Bits Description Certain Spare Bits will cause the occurrence of a minor alarm whenreceived as a logical "0".: 8 Mb/s & 34 Mb/s - FAS Bit 122 Mb/s - NFAS Timeslot (timeslot 0 of NFAS frame) Bit 0 HOW TO: 1 If SONET inter...

Page 64 - Adding Pointer Adjustments

54 Selecting Test Features Adding Pointer Adjustments Adding Pointer Adjustments Description The transmitted SPE or VT pointer value can be adjusted for testingpurposes. HOW TO: 1 Set up the SONET transmit interface and payload required. See "Setting SONET Transmit Interface " page 4. 2 Choo...

Page 65 - Choose POINTER SEQUENCES; Pointer Type

55 Selecting Test Features Adding Pointer Adjustments OFFSET - You can frequency offset the line rate or the SPE/VT rate,relative to each other, thus producing pointer movements. If you offsetthe SPE pointer, an 87:3 sequence of pointer movements is generated.The available configurations are listed ...

Page 67 - An Example of a Pointer Sequence; Pointer Adjustment; Pointer Sequence

57 Selecting Test Features Adding Pointer Adjustments N O T E The following conditions apply for pointer sequence generation:The sequences can only be applied to the SPE pointer when the SPE doesnot contain a VT structure, otherwise it is applied to the VT pointer.Pointer sequence generation is not ...

Page 71 - Using Pointer Graph Test Function; The graph can also be viewed on the

61 Selecting Test Features Using Pointer Graph Test Function Using Pointer Graph Test Function Pointer Graph shows the relative offset during the measurement period.This allows the time relationship of SPE or VT pointer movements to beobserved. Up to 4 days of storage allows long term effects such a...

Page 72 - Choose the POINTER UNDER TEST type.

62 Selecting Test Features Using Pointer Graph Test Function If, during a long term measurement (4 days), an event occurs at aparticular time each day, a short term measurement can be made atthe identified time to gain more detail of the event. 3 Choose the POINTER UNDER TEST type. 4 Press to start ...

Page 73 - Stressing Optical Clock Recovery Circuits

63 Selecting Test Features Stressing Optical Clock Recovery Circuits Stressing Optical Clock RecoveryCircuits Description Ideally clock recovery circuits in the network equipment opticalinterfaces should recover the clock even in the presence of long strings of0’s. You can check the performance of y...

Page 74 - Generating Automatic Protection Switch Messages

64 Selecting Test Features Generating Automatic Protection Switch Messages Generating Automatic ProtectionSwitch Messages Description You can program the K1 and K2 bytes to exercise the APS functions forBoth LINEAR (ITU-T G.783) and RING (ITU-T G.841) topologies. HOW TO: 1 Set up the SONET transmit ...

Page 75 - Inserting & Dropping Data Communications Channel

65 Selecting Test Features Inserting & Dropping Data Communications Channel Inserting & Dropping DataCommunications Channel Description The Data Communications Channel (DCC) of the regenerator andmultiplexer section overhead can be verified by protocol testing. TheInsert and Drop capability ...

Page 77 - Making Measurements

Page 78 - Using Overhead BER Test Function

68 Making Measurements Using Overhead BER Test Function Using Overhead BER Test Function Description You can perform a Bit Error Rate test on chosen bytes of the section, lineand path overhead bytes. You can access the transmit Overhead BER on the display. HOW TO: 1 Set up the SONET transmit interfa...

Page 79 - Test Timing

69 Making Measurements Test Timing Test Timing Description There are two aspects to test timing: • Error results may be displayed as short term or cumulative over themeasurement period.If short term error measurements are required,the short term period may be selected. • The period of the test may b...

Page 80 - Making SONET Analysis Measurements

70 Making Measurements Making SONET Analysis Measurements Making SONET Analysis Measurements Description G.826, M.2101, M.2110 and M.2120 analysis results are provided for allrelevant SONET error sources. In addition the following results are provided: Cumulative error count and error ratioShort Ter...

Page 81 - Making DSn Analysis Measurements

71 Making Measurements Making DSn Analysis Measurements Making DSn Analysis Measurements Description G.821, G.826, M.2100, M.2110 and M.2120 analysis results are providedfor all relevant DSn and DSn Payload error sources. In addition the following results are provided: Cumulative error count and err...

Page 82 - Measuring Frequency

72 Making Measurements Measuring Frequency Measuring Frequency Description The signal frequency and the amount of offset from the standard rate canbe measured to give an indication of probability of errors. HOW TO: 1 Connect the signal to be measured to the IN port of the DSN Receivemodule or the IN...

Page 83 - Measuring Optical Power

73 Making Measurements Measuring Optical Power Measuring Optical Power Description Optical power measurement can be performed on the SONET signalconnected to the Optical module IN port. HOW TO: 1 Connect the SONET optical signal to the IN port of the OpticalInterface module. 2 Choose the received in...

Page 84 - Measuring Round Trip Delay; Connect a loopback to the network equipment.

74 Making Measurements Measuring Round Trip Delay Measuring Round Trip Delay Description: The time taken for voice traffic to pass through the network is veryimportant. Excessive delay can make speech difficult to understand.The Round Trip Delay feature of the HP 37718A measures the delay in a64 kb/...

Page 85 - Choose ACTION

75 Making Measurements Measuring Round Trip Delay 4 Choose ACTION to start the measurement. If measuring on an SONET interface, the results are available on the display. If measuring on a DSn interface, the results are available on the display. The Round Trip delay measurement range is up to 2 secon...

Page 86 - Monitoring Signaling Bits; D4 and SLC-96 payloads

76 Making Measurements Monitoring Signaling Bits Monitoring Signaling Bits Description The HP 37718A receiver can be used to monitor the state of signalingbits in received 2 Mb/s signals with timeslot-16 CAS multiframing(PCM30 or PCM30CRC) and DS1 structured signals. 2.048 Mb/sResults For 2 Mb/s sig...

Page 87 - Measuring Service Disruption Time; The standby line is in place - Pattern Synchronization is regained.

77 Making Measurements Measuring Service Disruption Time Measuring Service Disruption Time Description: Protection switching ensures that data integrity is maintained andrevenue protected when equipment failure occurs. The speed of operationof the protection switch can be measured. The sequence of e...

Page 88 - If you choose a DS1 or DS3 framed unstructured payload, choose

78 Making Measurements Measuring Service Disruption Time N O T E At DS1 and DS3 Service Disruption results are only available forUnstructured payloads. Error Burst Definition Error bursts start and finish with an error. Bursts of less than 10 us areignored.Bursts are assumed to have completed when &...

Page 89 - Press; Results Displayed

79 Making Measurements Measuring Service Disruption Time 4 Press to start the measurement. 5 Invoke the protection switch. 6 View the results on the display. Results Displayed LONGEST - Longest burst of errors during measurement.SHORTEST - Shortest burst of errors during measurement.LAST - Length of...

Page 90 - Performing a SONET Tributary Scan

80 Making Measurements Performing a SONET Tributary Scan Performing a SONET Tributary Scan Description Tributary Scan tests each tributary for error free operation and nooccurrence of Pattern Loss. A failure is indicated by highlighting thetributary in which the failure occurred. The , mapping setup...

Page 91 - The Tributary Scan results can be viewed on the; The keyboard is locked during tributary scan.

81 Making Measurements Performing a SONET Tributary Scan 4 The Tributary Scan results can be viewed on the display. The Scan can be started on thedisplay or the display by choosing START. If the Scan is started on thedisplay, the HP 37718A changes to the display. If a single path, for example, MAPPI...

Page 92 - Performing an SONET Alarm Scan

82 Making Measurements Performing an SONET Alarm Scan Performing an SONET Alarm Scan Description SONET Alarm Scan tests each channel for alarm free operation andidentifies and indicates any Unequipped channels.You can configure the Scan to check for the occurrence of any Path layerCV errors above a ...

Page 93 - Performing a DSn Alarm Scan

83 Making Measurements Performing a DSn Alarm Scan Performing a DSn Alarm Scan Description DSn Alarm Scan tests each channel for the following alarms: Frame LossRAIAIS The channel in which an alarm occurs is highlighted. HOW TO: 1 Set up the receive DSn interface as required. See “Setting DSn Receiv...

Page 94 - Measuring Jitter

84 Making Measurements Measuring Jitter Measuring Jitter Description: Jitter and error measurements are made simultaneously when a jitteroption is fitted. The measurements are made on the normal input to theDSn or SONET receiver and the interface selections are the normal DSnor SONET Receiver select...

Page 96 - Measuring Extended Jitter; When

86 Making Measurements Measuring Extended Jitter Measuring Extended Jitter Description: Extended jitter measurements are made in a jitter bandwidth of 0.1 Hzto 25 kHz. These measurements are made at the upper end of thestandard wander frequency range and the lower end of the standardjitter frequency...

Page 97 - Measuring Wander; Make the Measurement; SIGNAL

87 Making Measurements Measuring Wander Measuring Wander Description: Accurate Wander measurements require a Wander reference derivedfrom the SONET Clock module. Wander results are displayed in UI andnanoseconds and Jitter Amplitude and Jitter Hits results are available. When wander is measured at 2...

Page 99 - Measuring Jitter Tolerance

89 Making Measurements Measuring Jitter Tolerance Measuring Jitter Tolerance Description: The jitter auto tolerance feature provides jitter tolerance measurementswithin the relevant ITU-T mask, G.823 for DSn, G.958, G.825 andBellcore GR-253 for SONET. Jitter is generated at a range of frequencies wi...

Page 101 - is chosen, a plot of the jitter tolerance results against the

91 Making Measurements Measuring Jitter Tolerance HOW TO: View the Results 1 Choose the results FORMAT.If is chosen, a plot of the jitter tolerance results against the ITU-T mask is displayed.If is chosen, the results from which the graph is constructed are displayed, Point number, Frequency, Mask a...

Page 102 - Measuring Jitter Transfer

92 Making Measurements Measuring Jitter Transfer Measuring Jitter Transfer Description: You can perform Jitter transfer measurements at each of the four DSnrates, STS-3, OC-3, OC-12 and OC-48. The jitter generator provides thestimulus for the jitter transfer measurement.Narrow band filtering is used...

Page 103 - The CALIBRATION should always be carried out with LEVEL; C A U T I O N

93 Making Measurements Measuring Jitter Transfer HOW TO: Perform Jitter Transfer Calibration N O T E The CALIBRATION should always be carried out with LEVEL selected on the display. 1 If DSn Jitter Transfer is required, set up the DSn transmit and receiveinterfaces, the receive jitter interface and ...

Page 106 - is chosen, a plot of the jitter transfer results against the

96 Making Measurements Measuring Jitter Transfer HOW TO: View the Results 1 Choose the results FORMAT.If is chosen, a plot of the jitter transfer results against the ITU-T mask is displayed.If is chosen, the results from which the graph is constructed are displayed: Point number, Frequency, Mask amp...

Page 107 - Storing, Logging and Printing

Page 108 - Saving Graphics Results to Instrument Store

98 Storing, Logging and Printing Saving Graphics Results to Instrument Store Saving Graphics Results to InstrumentStore Description Graphical representation of measurement results is very usefulparticularly during a long measurement period. It provides an overviewof the results and can be printed fo...

Page 109 - Recalling Stored Graph Results

99 Storing, Logging and Printing Recalling Stored Graph Results Recalling Stored Graph Results Description Results stored from a previous measurement can be recalled to thegraphics displays for viewing and printing. HOW TO: 1 If currently viewing the bar graph display, select then . If currently vie...

Page 110 - The top row of the display comprises five fields:; Store; Start Date

100 Storing, Logging and Printing Recalling Stored Graph Results The top row of the display comprises five fields: Store Memory location in which the displayed bar graph datais stored. Move the highlighted cursor, to the STORElocation desired, using and . Start Date The start date of the test, which...

Page 111 - Viewing the Bar Graph Display

101 Storing, Logging and Printing Viewing the Bar Graph Display Viewing the Bar Graph Display Description All the graphic results obtained during the measurement are availablefor viewing. Identify a period of interest and zoom in for more detailedexamination. HOW TO: 1 To view the current bar graphs...

Page 113 - Viewing the Graphics Error and Alarm Summaries

103 Storing, Logging and Printing Viewing the Graphics Error and Alarm Summaries Viewing the Graphics Error and AlarmSummaries Description The error and alarm summaries of the measurement chosen aredisplayed on the display. The error summary or alarm summary can be viewed at any time. HOW TO: 1 To v...

Page 115 - Logging Graph Displays; Log to an External Printer; Make the required selections on the

105 Storing, Logging and Printing Logging Graph Displays Logging Graph Displays Description The bar graphs and error and alarm summaries can be logged to the diskfor printing at a later date.If Option 601, Remote Control, is fitted, the bar graphs and error andalarm summary can be logged to an exter...

Page 116 - Choose

106 Storing, Logging and Printing Logging Graph Displays 4 Choose to confirm or abort the print.To confirm the print and only print the portion of the graph displayedand the summaries choose . To confirm the print and print the graph for the whole measurementperiod and the summaries choose . To abor...

Page 117 - Logging Results; Test Period Logging; without affecting the test in; Error Event Logging; LOGGING; Period; LOGGING SETUP

107 Storing, Logging and Printing Logging Results Logging Results Description Test Period Logging If degradations in system performance can be observed at an early stage,then the appropriate remedial action can be taken to maximize circuitavailability and avoid system crashes. Test period logging al...

Page 118 - External Parallel Port printer (option 601)

108 Storing, Logging and Printing Logging Results • Optional Internal printer fitted into the instrument front cover(Option 602) • External HP-IB printer (option 601) • External RS-232-C printer (option 601) • External Parallel Port printer (option 601) • Disk Drive HOW TO: 1 Choose LOGGING [ON] - e...

Page 120 - Logging on Demand

110 Storing, Logging and Printing Logging on Demand Logging on Demand Description When is pressed the chosen results are logged to the chosen logging device. The choice of results for logging is: RESULTS SNAPSHOT - last recorded measurement resultsOVERHEAD SNAPSHOT - last recorded overhead values of...

Page 122 - Logging Jitter Tolerance Results

112 Storing, Logging and Printing Logging Jitter Tolerance Results Logging Jitter Tolerance Results Description The jitter auto tolerance feature provides jitter tolerance measurementswithin the relevant ITU-T mask, G.823 for DSn, G.958, G.825 and G.253for SONET. You can log the jitter auto toleranc...

Page 124 - Logging Jitter Transfer Results

114 Storing, Logging and Printing Logging Jitter Transfer Results Logging Jitter Transfer Results Description The jitter transfer feature provides jitter transfer measurements withinthe relevant ITU-T mask, G.823 for DSn and G.958 for SONET. You can log the jitter transfer results to a printer for r...

Page 126 - Logging Results to Parallel (Centronics) Printer; 0 character column width or

116 Storing, Logging and Printing Logging Results to Parallel (Centronics) Printer Logging Results to Parallel(Centronics) Printer Description If Option 601, Remote Control Interface, is fitted, you can log the resultsand alarms to an external Parallel printer connected to the PARALLELport. The Para...

Page 127 - Logging Results to HP-IB Printer; Choose the LOGGING SETUP

117 Storing, Logging and Printing Logging Results to HP-IB Printer Logging Results to HP-IB Printer Description If Option 601, Remote Control Interface, is fitted, you can log the resultsand alarms to an external HP-IB printer connected to the HP-IB port. HOW TO: 1 Connect an HP-IB printer to the HP...

Page 128 - Logging Results to Internal Printer

118 Storing, Logging and Printing Logging Results to Internal Printer Logging Results to Internal Printer Description If Option 602, Internal Printer is fitted, you can log the results andalarms to the in-lid printer. HOW TO: 1 Choose the LOGGING SETUP and set up the display as required. See "Lo...

Page 130 - Printing Results from Disk; Print from DOS Prompt; Choose the required file from Filemanager.

120 Storing, Logging and Printing Printing Results from Disk Printing Results from Disk Description The results and alarms you logged to Disk can be printed by removingthe Disk from the HP 37718A and inserting it into a personal computer(PC). HOW TO: Print from DOS Prompt copy/b a:\<filename> ...

Page 131 - Connecting an HP 850C DeskJet Printer to a Parallel Port

121 Storing, Logging and Printing Connecting an HP 850C DeskJet Printer to a Parallel Port Connecting an HP 850C DeskJetPrinter to a Parallel Port Description If Remote Control Option, 601, is fitted, the HP 37718A has thecapability of interfacing with an HP 850C DeskJet printer or, analternative su...

Page 132 - Changing Internal Printer Paper; WA R N I N G

122 Storing, Logging and Printing Changing Internal Printer Paper Changing Internal Printer Paper Description The printer accepts rolls of thermal paper with the following dimensions: Suitable rolls of paper are available from Hewlett Packard, Part Number9270-1360. WA R N I N G The paper tear-off ed...

Page 135 - Cleaning Internal Printer Print Head; to move the cleaning

125 Storing, Logging and Printing Cleaning Internal Printer Print Head Cleaning Internal Printer Print Head Description The print head should be cleaned when broken or light characters occurin a vertical line on the page. To maintain a high quality print, clean theprint head after 200 to 300 prints....

Page 137 - Using Instrument and Disk Storage

Page 138 - Storing Configurations in Instrument Store

128 Using Instrument and Disk Storage Storing Configurations in Instrument Store Storing Configurations in InstrumentStore Description You can store measurement settings which are used regularly and recallthem with a single operation. One preset store is provided which cannot be overwritten, STOREDS...

Page 139 - Titling Configuration in Instrument Store

129 Using Instrument and Disk Storage Titling Configuration in Instrument Store Titling Configuration in InstrumentStore Description When storing configurations, you can give them an easily rememberedtitle for identification at a later date. HOW TO: 1 Choose the STORED SETTING NUMBER which contains ...

Page 140 - Recalling Configurations from Instrument Store

130 Using Instrument and Disk Storage Recalling Configurations from Instrument Store Recalling Configurations fromInstrument Store Description Having stored a configuration for future use, you must be able to recallthat configuration in the future. HOW TO: 1 Choose the STORED SETTING NUMBER which co...

Page 141 - Formatting a Disk; Choose DISK OPERATION

131 Using Instrument and Disk Storage Formatting a Disk Formatting a Disk Description Only 1.44M, MS-DOS compatible disks can be used in the HP 37718A.Any other format or capacity will result in a disk access error beingdisplayed. N O T E Disks can be formatted in an IBM compatible PC (1.44M, MS-DOS...

Page 142 - Labeling a Disk

132 Using Instrument and Disk Storage Labeling a Disk Labeling a Disk Description You can label your disks for ease of identification. HOW TO: 1 Choose DISK OPERATION . 2 Label the Disk using or press and use the pop-up keypad. 3 Choose to confirm the label is correct. The label is displayed at the ...

Page 143 - Managing Files and Directories on Disk; Creating a Directory on Disk

133 Using Instrument and Disk Storage Managing Files and Directories on Disk Managing Files and Directories on Disk Description File and Directory structures can be important in speeding up thetransfer of data between the instrument and the disk drive.It is recommended that you create a directory st...

Page 144 - Accessing Directories and Files

134 Using Instrument and Disk Storage Managing Files and Directories on Disk Accessing Directories and Files 1 Choose DISK OPERATION . 2 Choose FILE TYPE you wish to view.This acts as a filter on the filename extension: - . CNF filter , - .SMG filter, - .PRN filter, - .BMP filter. 3 Move the highlig...

Page 146 - Renaming a File on Disk

136 Using Instrument and Disk Storage Managing Files and Directories on Disk Renaming a File on Disk Description Files can be renamed as an aid to efficient file management. HOW TO: 1 Choose DISK OPERATION . 2 Enter the FROM filename using or Choose the directory which contains the file to be rename...

Page 147 - Deleting a File on Disk

137 Using Instrument and Disk Storage Managing Files and Directories on Disk Deleting a File on Disk Description Obsolete files can be deleted as an aid to efficient file management. HOW TO: 1 Choose DISK OPERATION . 2 Choose the directory containing the file to be deleted. See "AccessingDirecto...

Page 148 - Deleting a Directory on Disk

138 Using Instrument and Disk Storage Managing Files and Directories on Disk Deleting a Directory on Disk Description Obsolete Directories should be deleted as an aid to efficient filemanagement. N O T E A directory cannot be deleted until all the files within the directory havebeen deleted. See ...

Page 149 - Adding Descriptors to Disk Files

139 Using Instrument and Disk Storage Managing Files and Directories on Disk Adding Descriptors to Disk Files Description When storing configurations or graphics on disk, you can give them aneasily remembered descriptor for identification at a later date. Descriptors can be added to .CNF and .SMG fi...

Page 150 - Saving Graphics Results to Disk; Automatic; Choose GRAPH STORAGE

140 Using Instrument and Disk Storage Saving Graphics Results to Disk Saving Graphics Results to Disk Description Graphics results can be saved to a file on disk. Two methods of namingthe file, which is created when the measurement is started, are available: Automatic A filename in the form meas001 ...

Page 151 - Choose the directory in which to save the graphics results. See

141 Using Instrument and Disk Storage Saving Graphics Results to Disk 2 Choose the directory in which to save the graphics results. See "Accessing Directories and Files " page 134. 3 If you wish to enter your own choice of filename, choose DISKOPERATION FILE TYPE . 4 Move the highlighted cur...

Page 152 - Saving Data Logging to Disk

142 Using Instrument and Disk Storage Saving Data Logging to Disk Saving Data Logging to Disk Description Data Logging can be saved to a file on disk. The disk can be transferredto a personal computer (PC) and the logging investigated at a later date. HOW TO: 1 Choose the directory in which to save ...

Page 153 - Saving Configurations to Disk

143 Using Instrument and Disk Storage Saving Configurations to Disk Saving Configurations to Disk Description You can store a large number of measurement settings which are usedregularly and recall them when required. Configurations can be stored to a file on the floppy disk. The floppy diskcan be u...

Page 154 - Recalling Configuration from Disk

144 Using Instrument and Disk Storage Recalling Configuration from Disk Recalling Configuration from Disk Description If a configuration has been stored on disk, you will need to recall it atsome time in the future to configure the instrument. HOW TO: 1 Choose the directory that contains the configu...

Page 155 - Recalling Graphics Results from Disk

145 Using Instrument and Disk Storage Recalling Graphics Results from Disk Recalling Graphics Results from Disk Description If graphic results have been stored on disk, you will need to recall themin able to view the results on the . display. HOW TO: 1 Choose the directory that contains the graphics...

Page 156 - Copying Configuration from Instrument Store to Disk

146 Using Instrument and Disk Storage Copying Configuration from Instrument Store to Disk Copying Configuration fromInstrument Store to Disk Description If you have a configuration stored in the instrument store that you wishto use on another instrument, you can copy it to disk. The configurationcan...

Page 157 - To copy the configuration from instrument to Disk choose

147 Using Instrument and Disk Storage Copying Configuration from Instrument Store to Disk 3 To copy the configuration from instrument to Disk choose . If you have entered a filename which already exists, a warning "Fileexists - are you sure you wish to continue" is displayed.If YES is select...

Page 158 - Copying Configuration from Disk to Instrument Store

148 Using Instrument and Disk Storage Copying Configuration from Disk to Instrument Store Copying Configuration from Disk toInstrument Store Description If you have a configuration stored in the instrument store that you wishto use on another instrument, you can copy it to Disk. The configurationcan...

Page 159 - To copy the configuration from Disk to instrument, choose

149 Using Instrument and Disk Storage Copying Configuration from Disk to Instrument Store 4 To copy the configuration from Disk to instrument, choose . If you have entered a instrument store number which already containsa configuration, a warning "Are you sure you wish to continue" isdisplay...

Page 160 - Copying Graphics Results from Instrument Store to Disk

150 Using Instrument and Disk Storage Copying Graphics Results from Instrument Store to Disk Copying Graphics Results fromInstrument Store to Disk Description You can copy Graphics Results from the instrument store to the Disk.This is useful under the following conditions: • If you have graphics res...

Page 161 - . CSV is Comma Separated

151 Using Instrument and Disk Storage Copying Graphics Results from Instrument Store to Disk 4 If you wish to view the graphic results at a later date via aspreadsheet, choose FORMAT . CSV is Comma Separated Variable.If you wish to view the graphic results at a later date on an HP37718A, choose FORM...

Page 164 - Coupling Transmit and Receive Settings

154 Selecting and Using "Other" Features Coupling Transmit and Receive Settings Coupling Transmit and Receive Settings Description When generating and measuring at the same interface level, you canhave the transmit and receive settings coupled together. Any settingschange made on the transmi...

Page 166 - Enabling Keyboard Lock

156 Selecting and Using "Other" Features Enabling Keyboard Lock Enabling Keyboard Lock Description You can protect the measurement settings from interference during atest. This function is provided in the HP 37718A on the display. The following keys are not affected by Keyboard Lock: • Displ...

Page 167 - Enabling Beep on Received Error

157 Selecting and Using "Other" Features Enabling Beep on Received Error Enabling Beep on Received Error Description You can have an audible indication of an error which is particularlyuseful when the display on the test set is hidden from view. This function is provided in the HP 37718A on ...

Page 168 - Suspending Test on Signal Loss; This function is available on the

158 Selecting and Using "Other" Features Suspending Test on Signal Loss Suspending Test on Signal Loss When running a test, you can choose to suspend the test during periodsof signal loss. This function is available on the display. HOW TO: 1 Choose SUSPEND TEST ON SIGNAL LOSS . OTHER MISCELL...

Page 169 - Setting Error Threshold Indication

159 Selecting and Using "Other" Features Setting Error Threshold Indication Setting Error Threshold Indication Description When making error measurements, you can have an indication of whenan error count or error ratio threshold has been exceeded. You can set theHP 37718A to indicate this by...

Page 170 - Setting Screen Brightness and Color

160 Selecting and Using "Other" Features Setting Screen Brightness and Color Setting Screen Brightness and Color Description The HP 37718A screen can be set to single or two color using the COLORPALETTE selection on the , display. The screen brightness can be set to full or half brightness.T...

Page 171 - Dumping Display to Disk

161 Selecting and Using "Other" Features Dumping Display to Disk Dumping Display to Disk Description The chosen display may be stored on disk in bitmap format using theScreen Dump feature of the HP37718A. Logging and Floppy Disk mustbe set up for screen dump. The current display is stored on...

Page 173 - Running Self Test; Run ALL TESTS

163 Selecting and Using "Other" Features Running Self Test Running Self Test Description Before using the HP 37718A to make measurements, you can run SelfTest ALL TESTS to ascertain the integrity of the HP 37718A. Thesetests take between at least 1 hour to complete depending on the optionsfi...

Page 175 - The Loopbacks list will appear on the

165 Selecting and Using "Other" Features Running Self Test 4 Press to activate the Self Test. TEST STATUS RUNNING will be displayed.The information pertaining to TEST TYPE, TEST NUMBER andSUBTEST NUMBER will change as the Self Test progresses.If the HP 37718A is functioning correctly, after ...

Page 177 - Appendix A

Appendix A 7 STS-1 SPE BackgroundPatterns The following tables list the background patterns available when selecting specificforegrounds.

Page 179 - A table of ETSI terms with their ANSI equivalents.

Appendix B 8 ETSI/ANSI Terminology A table of ETSI terms with their ANSI equivalents.

Page 180 - ETSI/ANSI Terminology; ETSI/ANSI Conversion and Equivalent Terms; Introduction; ETSI: European Telecommunications Standards Institute.; Table 3

170 ETSI/ANSI Terminology ETSI/ANSI Conversion and Equivalent Terms ETSI/ANSI Conversion and Equivalent Terms Introduction The terminology used on the instrument display can be ETSI (SDH) orANSI (SONET) terminology. Refer to the table given in this appendix foran explanation of equivalent SDH/SONET ...

Page 183 - Index

Index 173 AAlarm scan DSn, 83SONET, 82 Alarms & errors DSn add, 50DSn payload add, 50SONET add, 49 Analysis measurement DSn, 71DSn payload, 71SONET, 70 APS messages generation, 64monitoring, 25test function, 64 Automatic protection switch message generation, 64 Autotolerance, 89 BB/G mapping sel...

Page 187 - Hewlett-Packard Sales and Service Offices

Hewlett-Packard Sales and Service Offices If you need technical assistance with aHewlett-Packard test and measurementproduct or application please contact theHewlett-Packard office or distributor inyour country. Asia Pacific: Hong Kong:Tel: (852) 2599 7889 India:Tel: (91-11) 682-6000 Japan:Hewlett-P...

Page 189 - About This Edition

About This Edition This is the 2nd edition ofthe DSn/SONET UsersGuide. It documents theproduct as of December1998. Edition dates are asfollows: 1st Edition, Sept. 1998 2nd Edition, Dec. 1998  Copyright Hewlett- Packard Ltd. 1998. Allrights reserved.Reproduction, adaption, ortranslation without prio...

Page 190 - In This Book

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