Tektronix cts710 Manual do Utilizador Página 94
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Basic Test Procedures
3–4
CTS 710 SONET Test Set User Manual
Transmission Signal Quality Testing
Measuring Bit Error Rate
The bit error rate (BER) test is one of the best ways to measure the
quality of a SONET transmission link. You can use the CTS 710 to
make a BER test on a two-way link that is connected in a loop-back
configuration. If this is a test you perform often, save it as a pass/fail
test for easy recall.
1. Connect the CTS 710 to a network as shown in Figure 3–2.
NE
One or More SONET NEs
CTS 710 SONET Test Set
All Signals are
STS-1
Figure 3–2: Setup to Check a Transmission Link
Basic Test Procedures
3–4
CTS 710 SONET Test Set User Manual
Transmission Signal Quality Testing
Measuring Bit Error Rate
The bit error rate (BER) test is one of the best ways to measure the
quality of a SONET transmission link. You can use the CTS 710 to
make a BER test on a two-way link that is connected in a loop-back
configuration. If this is a test you perform often, save it as a pass/fail
test for easy recall.
1. Connect the CTS 710 to a network as shown in Figure 3–2.
NE
One or More SONET NEs
CTS 710 SONET Test Set
All Signals are
STS-1
Figure 3–2: Setup to Check a Transmission Link
- WARRANTY 3
- Table of Contents 5
- Reference 6
- Appendices 11
- Glossary and Index 12
- List of Figures 13
- List of Tables 18
- General Safety Summary 21
- Product Damage Precautions 22
- Safety Terms and Symbols 23
- How This Manual is Organized 25
- Conventions 25
- Related Manuals 26
- Contacting Tektronix 28
- Getting Started 31
- Accessories 32
- First Time Operation 33
- Velcro Strip 35
- 90–132 V 48–62 Hz 250 W 39
- 180–250 V 48–62 Hz 250 W 39
- Functional Overview 43
- Front-Panel Status Lights 46
- Reading the Display 48
- The Basic Menu Structure 51
- Displaying Help 54
- Connecting Signals 55
- Initiating Autoscan 57
- Changing Parameters 57
- Working with the Disk Drive 65
- Tutorial 69
- Setting Transmit Parameters 70
- Setting Receive Parameters 72
- Setting the Test Time 73
- RESULTS none none none 74
- Begin the Test 75
- Inserting Errors 76
- Error type set to Path B3 BIP 77
- Adjusting Pointers 78
- USER DEFINED 81
- Viewing Transport Overhead 82
- Viewing Test Results 85
- MAIN RESULTS none none 86
- Reference Reference 89
- Basic Test Procedures 91
- Network Continuity Checking 92
- Save to Disk Save Current 96
- Fault Tolerance Checking 98
- Performance Monitoring 108
- Starting and Stopping a Test 117
- Working with Test Setups 121
- Description EDIT TEXT 123
- Save to Memory Memory n 123
- Pass/Fail Tests 127
- Creating a Pass/Fail Test 134
- Checking Signal Status 145
- Viewing the Signal State 148
- Steps for Setting Parameters 153
- Setting the Transmit Rate 154
- Available SONET 155
- Transmit rates 155
- Setting the Transmit Clock 158
- Setting the Transmit Level 159
- Setting the Signal Structure 159
- Specifying the STS to Test 160
- Setting the Payload Mapping 161
- Setting the Test Pattern 165
- Setting Overhead Bytes 167
- EDIT BYTE 169
- Parameters 179
- Available tributary 181
- Setting the Line Clock Offset 183
- Specifying the Framing 184
- Specifying the Test Pattern 186
- Setting the Receive Rate 190
- Receive Rates 191
- Setting the Receive Level 193
- Specifying Which STS to Test 194
- Setting the Mapping 194
- Dropping a Tributary Signal 201
- Viewing Overhead Bytes 205
- Setting the Framing 214
- Simulating Error Conditions 221
- Setting Alarms 225
- Simulating Transmit Failures 228
- Setting Pointers 231
- Changing Timing 239
- Generating Pointer Sequences 241
- Cool Down Time On 249
- Setting the APS Mode 251
- Setting the K1 Byte 252
- Setting the K2 Byte 256
- The RECEIVE 262
- Viewing Results 263
- Viewing Detailed Results 264
- Viewing Measurement Histories 271
- STS Pointer Value 274
- VT Pointer Value 274
- Zooming History Graphs 278
- 15 minutes 4 hours 279
- 60 minutes 12 hours 279
- Panning History Graphs 280
- Saving and Recalling Results 282
- Printing Results 286
- Changing Instrument Settings 289
- Turning the Beeper On and Off 291
- Setting the Date 292
- Setting the Time 292
- Changing the Printer Setup 293
- Running Instrument Self Tests 300
- Appendices Appendices 303
- Appendix A: Menu Maps 305
- SAVE PASS/FAIL TESTS Page 307
- APS COMMANDS Page (2 of 3) 318
- APS COMMANDS Page (3 of 3) 319
- SIGNAL STATUS Page 324
- TRANSPORT OVERHEAD Page 324
- MAIN RESULTS Page 326
- ERROR ANALYSIS Page 326
- PRINTER SETUP Page 329
- REMOTE CONTROL Page 330
- INSTR CONFIG Page 331
- SELF TEST Page 331
- Status Messages 333
- Error Messages 335
- Appendix D: Specifications 343
- Loop-Back Connection 364
- How to Proceed 365
- SONET Signals 366
- VGA Video Output 373
- RS-232 Port 375
- GPIB Port 375
- External Clock Input 376
- Calibration Signal Output 376
- Overhead Add/Drop Port 377
- BITS Timing Reference Input 379
- Connectors 381
- Glossary 389
- SONET Signal Hierarchy 394
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