HP 37718A Instrukcja Użytkownika Strona 90
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80
Making Measurements
Performing a SONET Tributary Scan
Performing a SONET Tributary Scan
Description Tributary Scan tests each tributary for error free operation and no
occurrence of Pattern Loss. A failure is indicated by highlighting the
tributary in which the failure occurred. The
, mapping setup determines the tributary structure.
The HP 37718A will configure the Transmitter to the Receiver and the
PATTERN is forced to the payload it will fill.
TIP: The SONET Tributary Scan display can be logged to the chosen logging
device. See "Logging on Demand " page 110.
HOW TO: 1 Set up the transmit and receive SONET interfaces and payload as
required. See "Setting SONET Transmit Interface " page 4 and
"Setting SONET Receive Interface " page 17.
2 Choose the required BIT ERROR THRESHOLD.
This determines the error rate above which a failure is declared.
3 Choose the required TEST TIMING.
The value you choose is the test time for each individual tributary and
not the total test time.
For example, 28 VT-1.5 tributaries in an STS-1 SPE - the time taken
to complete the Tributary Scan will be 28 X TEST TIMING choice.
TRANSMIT
SONET
MAIN SETTINGS
- HP 37718A 1
- OmniBER 718 1
- About This Book 4
- 3 Making Measurements 6
- Contents 10
- 1 Setting the Interfaces 11
- Setting the Interfaces 12
- STRUCTURED 13
- SETTINGS CONTROL COUPLED 14
- INTERNAL THRU MODE THRU MODE 14
- EXTERNAL 14
- AUTO TOLERANCE 17
- TRANSFER FUNCTION 17
- Setting SONET THRU Mode 21
- TRANSMIT 22
- SONET TEST FUNCTION SONET 22
- Using Smart Test 23
- Setting DSn Receive Interface 25
- Interface 29
- 2 Selecting Test Features 31
- Selecting Test Features 32
- STS-1# 2 STS-1#3 34
- STS-1# 1,2,3 34
- DECREASE DIGIT 34
- INCREASE DIGIT 34
- Generating Overhead Sequences 37
- , and to set the 43
- Setting up Signaling Bits 44
- INSERT 2 Mb/s 47
- INSERT DS1 47
- DROP 2 Mb/s 49
- DROP DS1 49
- STORED SETTINGS COUPLED 49
- DESELECT ALL DESELECT SELECT 50
- Ω IN port of the PDH/DSn 53
- DROP 34 Mb/s 56
- DROP DS3 56
- DSn Payload 60
- Using FEAC Codes 61
- Setting DSn Spare Bits 63
- Adding Pointer Adjustments 64
- START INIT 65
- STOP INIT 65
- SONET RESULTS 71
- Circuits 73
- Switch Messages 74
- Inserting & Dropping Data 75
- Communications Channel 75
- Test Timing 79
- ANALYSIS 80
- Measuring Frequency 82
- Measuring Optical Power 83
- Measuring Round Trip Delay 84
- DSn PAYLOAD 85
- Monitoring Signaling Bits 86
- TEST FUNCTION 87
- SERVICE DISRUPT 88
- SRVC DISRUPT 89
- MAIN SETTINGS 90
- SONET ALM SCAN 92
- Performing a DSn Alarm Scan 93
- Measuring Jitter 94
- Measuring Extended Jitter 96
- Measuring Wander 97
- Measuring Jitter Tolerance 99
- Measuring Jitter Transfer 102
- TERMINATE 103
- FLOPPY DISK 108
- RUN/STOP 108
- Viewing the Bar Graph Display 111
- ZOOM IN ZOOM OUT 112
- Summaries 113
- Logging Graph Displays 115
- Logging Results 117
- Logging on Demand 120
- Logging Results to Parallel 126
- (Centronics) Printer 126
- CONTROL 127
- NORMAL COMPRESS 129
- Printing Results from Disk 130
- Connecting an HP 850C DeskJet 131
- Printer to a Parallel Port 131
- INSERT PAPER 133
- Storing, Logging and Printing 134
- PAPER FEED 135
- JUMP NEXT CHAR 139
- PREVIOUS CHAR 139
- Recalling Configurations from 140
- Instrument Store 140
- Formatting a Disk 141
- Labeling a Disk 142
- Creating a Directory on Disk 143
- - .CNF filter, - .SMG filter 144
- Renaming a File on Disk 146
- Deleting a File on Disk 147
- Deleting a Directory on Disk 148
- FILE PROPERTIES 149
- FILE DESCRIPTOR 149
- PREVIOUS CHAR NEXT CHAR 149
- GRAPHICS 151
- Saving Data Logging to Disk 152
- Saving Configurations to Disk 153
- RECALL CONFIGURATION 154
- RECALL GRAPHICS 155
- Copying Configuration from 156
- Instrument Store to Disk 156
- , highlight the 158
- Copying Graphics Results from 160
- SETTINGS CONTROL 164
- Setting Time & Date 165
- Enabling Keyboard Lock 166
- MISCELLANEOUS 167
- GRAPH RESULTS 169
- COLOR CONTROL 169
- Dumping Display to Disk 171
- SCREEN DUMP 172
- PRINT NOW 172
- Running Self Test 173
- CONF. TESTS 174
- SELF TEST 174
- Appendix A 177
- 7 STS-1 SPE Background 177
- Patterns 177
- Appendix B 179
- 8 ETSI/ANSI Terminology 179
- ETSI/ANSI Terminology 181
- Asia Pacific: 187
- Australia/New Zealand: 187
- Latin America: 188
- United States: 188
- About This Edition 189
- Printed in U.K. 12/98 190
- 37718-90022 190
- In This Book 190
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