DLS DLS 400A User manual

Revision 0
21 September 1999
Te s t W r k s
Operatin
g
Manual
DLS 400A/H/N/HN
Wireline Simulator

DLS 400 Operating Manual
Page iii
Table of Contents
1. INTRODUCTION .................................................................................................1
1.1 About the DLS 400 ADSL Wireline Simulator ....................................................1
1.2 About this Manual .................................................................................................2
2. QUICK START ......................................................................................................3
3. GETTING STARTED .........................................................................................4
3.1 Receiving and Unpacking the Unit .......................................................................4
3.2 Hardware and Software Requirements ..................................................................4
3.3 DLS 400 Front and Rear Panels ............................................................................5
3.4 Digital Connections ...............................................................................................6
3.5 Analog connections ...............................................................................................7
3.6 RJ–45 Adapter .......................................................................................................8
3.7 LEDs ...................................................................................................................... 8
3.8 Connecting Power to the DLS 400 ........................................................................9
3.9 DLS 400 Self-Test .................................................................................................9
3.10 National Instruments GPIB Card and Software Installation ...............................9
3.10.1 Installing National Instruments GPIB Software
(IEEE 488 operation only) ..........................................................................10
3.10.2 Installing the GPIB–PCII/IIA Card (IEEE 488 operation only) ................10
3.10.3 How to Check if the NI card is installed properly ......................................12
4. DLS 400 SOFTWARE ........................................................................................13
4.1 Overview .............................................................................................................13
4.2 Software Installation ...........................................................................................13
4.3 Initial Screen .......................................................................................................13
4.3.1 Changing Communications Mode ................................................................14
4.4 Unit Configuration ..............................................................................................15
4.5 Main Control Screen ...........................................................................................16
4.5.1 Loading and Saving Settings ........................................................................17
4.5.1.1 Loading Standards Impairments Settings ......................................................18
4.6 Impairments Control Panel ..................................................................................19
4.6.1 Editing Impairments Screen ..........................................................................20
4.6.2 Edit Longitudinal Voltage (Common Mode Impairments) ...........................23
4.7 Impulse Control ...................................................................................................24

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4.8 Operating Two or More Units from the 400 Series Concurrently .......................24
5. SYSTEM DESCRIPTION ...............................................................................25
5.1 DLS 400 Description ...........................................................................................25
5.2 DLS 400 Unit Loopset Configurations ...............................................................26
5.3 Loop Descriptions ...............................................................................................28
5.3.1 CSA Loops ....................................................................................................28
5.3.2 ANSI Loops ...................................................................................................31
5.3.3 EIA Loops .....................................................................................................34
5.3.4 Variable Loops ..............................................................................................35
5.3.5 Reversing Loops ............................................................................................36
6. ADSL NOISE GENERATOR DESCRIPTION ......................................38
6.1 General ................................................................................................................38
6.2 Grouped Impairments ..........................................................................................38
6.2.1 Basic Rate Testing, ANSI T1.E1 T1.601 standard ........................................39
6.2.2 HDSL Rate Testing, ANSI Technical Report on HDSL ................................39
6.2.3 HDSL2 Rate Testing, ANSI Proposed Working Draft for
HDSL2 Standard (T1E1.4/98–268) ..............................................................39
6.2.4 ADSL Rate Testing, ANSI T1.413, Issue I and II ..........................................40
6.2.5 ADSL Rate Testing, ITU Standard for G.lite ................................................40
6.2.6 Basic Rate Testing, ETSI TS 102 080 ISDN Standard ..................................40
6.2.7 HDSL Rate Testing, ETSI TS 101 135 HDSL Standard ...............................41
6.2.8 European ADSL rate testing, ETSI ETR 328 ADSL Standard ......................41
6.3 Individual Impairments .......................................................................................41
6.4 Impairment Card Organization ............................................................................46
6.5 Output Stage ........................................................................................................47
6.6 Crosstalk Generators A and B .............................................................................48
6.7 Crosstalk Generator C .........................................................................................49
6.8 Shaped Noise Generator ......................................................................................50
6.9 Flat White Noise Generator .................................................................................50
6.10 Impulse Generator .............................................................................................50
6.11 External Noise ...................................................................................................52
6.12 Powerline Related Impairments ........................................................................52
6.12.1 Metallic Noise .............................................................................................53
6.12.2 Longitudinal Noise ......................................................................................53
6.12.3 DLS 200 Mode Crosstalk and White Noise ................................................55

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7. REMOTE CONTROL ......................................................................................56
7.1 IEEE 488 Interface ..............................................................................................56
7.1.1 DLS 400 IEEE 488 Address. .........................................................................57
7.1.2 The Service Request (SRQ) Line ...................................................................57
7.1.3 Resetting the DLS 400 ..................................................................................58
7.1.4 Message Terminators ....................................................................................58
7.1.5 Example using the IEEE 488 Interface .........................................................59
7.2 RS–232 Serial Interface ......................................................................................60
7.2.1 Message Terminators ....................................................................................60
7.2.2 Example using the RS–232 Interface ............................................................61
7.3 Data formats ........................................................................................................61
7.4 Command Syntax ................................................................................................62
8. REMOTE CONTROL: COMMON COMMAND SET ......................64
8.1 Status Reporting ..................................................................................................69
8.1.1 Status Byte Register (STB) ............................................................................69
8.1.2 Event Status Register (ESR) ..........................................................................70
8.2 DLS 400 Synchronization ...................................................................................71
9. REMOTE CONTROL: DEVICE DEPENDENT COMMANDS ....73
9.1 Device Dependent Command Set for Loops .......................................................73
9.1.1 :SETting:CHANnel:LOOP <Loop Name> ..................................................74
9.1.2 :SETting:CHANnel:TAP_A <NRf> ..............................................................77
9.1.3 :SETting:CHANnel:LINE <NRf> .................................................................77
9.1.4 SETting:CHANnel:TAP_B <NRf> ...............................................................78
9.1.5 :SETting:CHANnel:DIRection FORward|REVerse .....................................79
9.1.6 :SETting:CHANnel:BYpass <NO|YES> ......................................................79
9.1.7 :SETting:PWRline:LONGitudinal:STate <OFF/ON> .................................79
9.2 Device Dependent Command Set for Impairments .............................................80
9.2.1 Impairments Commands Summary ...............................................................80
9.2.2 Crosstalk Generator A ..................................................................................81
9.2.2.1 XTalk Generator A – Type ...........................................................................81
9.2.2.2 Xtalk Generator A – Level ..........................................................................81
9.2.2.3 Xtalk Generator A – Program ......................................................................81
9.2.3 Crosstalk Generator B ..................................................................................82
9.2.3.1 Xtalk Generator B – Type ............................................................................82
9.2.3.2 Xtalk Generator B – Level ...........................................................................82

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9.2.3.3 Xtalk Generator B – Program ......................................................................82
9.2.4 Crosstalk Generator C ..................................................................................82
9.2.4.1 Xtalk Generator C – Type ............................................................................82
9.2.4.2 Xtalk Generator C – Level ...........................................................................83
9.2.4.3 Xtalk Generator C – Program ......................................................................83
9.2.5 Shaped Noise Generator ...............................................................................83
9.2.5.1 Shaped Noise Generator – Type ...................................................................83
9.2.5.2 Shaped Noise Generator – Level ..................................................................84
9.2.5.3 Shaped Noise Generator – Program ..............................................................84
9.2.6 White Noise Generator .................................................................................84
9.2.6.1 Flat White Noise Generator – State ..............................................................84
9.2.6.2 Flat White Noise Generator – Level .............................................................84
9.2.7 Impulses ........................................................................................................85
9.2.7.1 Impulses – Type .........................................................................................85
9.2.7.2 Impulses – Width ........................................................................................85
9.2.7.3 Impulses – Level ........................................................................................85
9.2.7.4 Impulses – Rate ..........................................................................................85
9.2.7.5 Impulses – Single Shot ................................................................................86
9.2.8 Powerline Related Impairments ...................................................................86
9.2.8.1 Metallic Noise Sine Wave Generators ...........................................................86
9.2.8.1.1 Harmonic #1 Frequency ............................................................................86
9.2.8.1.2 Harmonic #2 Frequency ............................................................................86
9.2.8.3 Longitudinal Noise Triangle Wave Generator ................................................87
9.2.9 Quiet .............................................................................................................87
9.2.10 Output Stage ...............................................................................................88
10. CHARACTERISTICS OF FIXED LOOPS ...........................................89
10.1 CSA Loops ........................................................................................................90
10.1.1 CSA Loop #1 ...............................................................................................90
10.1.2 CSA Loop #2 ...............................................................................................92
10.1.3 CSA Loop #3 ...............................................................................................94
10.1.4 CSA Loop #4 ...............................................................................................96
10.1.5 CSA Loop #5 ...............................................................................................98
10.1.6 CSA Loop #6 .............................................................................................100
10.1.7 CSA Loop #7 .............................................................................................102
10.1.8 CSA Loop #8 .............................................................................................104
10.1.9 Extended-CSA Loop #9 .............................................................................106
10.1.10 Extended-CSA Loop #10 .........................................................................108

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10.1.11 Mid-CSA Loop #0 ................................................................................... 110
10.1.12 Mid-CSA Loop #1 ................................................................................... 112
10.1.13 Mid-CSA Loop #2 ................................................................................... 114
10.1.14 Mid-CSA Loop #3 ................................................................................... 116
10.1.15 Mid-CSA Loop #4 ................................................................................... 118
10.1.16 Mid-CSA Loop #5 ...................................................................................120
10.1.17 Mid-CSA Loop #6 ...................................................................................122
10.2 ANSI Loops .....................................................................................................124
10.2.1 ANSI Loop #1 ............................................................................................124
10.2.2 ANSI Loop #2 ............................................................................................126
10.2.3 ANSI Loop #3 ............................................................................................128
10.2.4 ANSI Loop #4 ............................................................................................130
10.2.5 ANSI Loop #5 ............................................................................................132
10.2.6 ANSI Loop #6 ............................................................................................134
10.2.7 ANSI Loop #7 ............................................................................................136
10.2.8 ANSI Loop #8 ............................................................................................138
10.2.9 ANSI Loop #9 ............................................................................................140
10.2.10 ANSI Loop #11 ........................................................................................142
10.2.11 ANSI Loop #12 ........................................................................................144
10.2.12 ANSI Loop #13 ........................................................................................146
10.2.13 ANSI Loop #15 ........................................................................................148
10.2.14 Mid-ANSI Loop #7 ..................................................................................150
10.3 EIA Loops .......................................................................................................152
10.3.1 EIA Loop #1 ..............................................................................................152
10.3.2 EIA Loop #2 ..............................................................................................154
10.3.3 EIA Loop #3 ..............................................................................................156
10.3.4 EIA Loop #4 ..............................................................................................158
10.3.5 EIA Loop #5 ..............................................................................................160
11. CHARACTERISTICS OF IMPAIRMENTS ......................................162
11.1 Noise shapes produced by Generators A & B .................................................162
11.2 Noise shapes produced by Generator C ...........................................................168
12. TROUBLESHOOTING ...............................................................................173
13. REFERENCES ................................................................................................175

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14. WARRANTY ....................................................................................................177
15. SHIPPING THE DLS 400 ...........................................................................179
16. SPECIFICATIONS ........................................................................................180
16.1 General ............................................................................................................180
16.2 Simulated loops ...............................................................................................180
16.2.1 DLS 400 Unit Configurations ...................................................................180
16.2.1 Description ...............................................................................................182
16.3 Impairments Card ............................................................................................183
16.3.1 White Noise Generator .............................................................................183
16.3.2 NEXT Generators A and B .......................................................................184
16.3.3 NEXT Generator C ...................................................................................185
16.3.4 Multi Tone Generator ...............................................................................185
16.3.5 Impulses ....................................................................................................186
16.3.6 Powerline Related Metallic Noise ............................................................186
16.3.7 Longitudinal Noise ....................................................................................186
16.3.8 Externally Generated Signals ...................................................................186
16.4 Mechanical ......................................................................................................187
16.5 IEEE 488 Remote Control ...............................................................................187
16.6 RS–232 Remote Control .................................................................................187
16.7 Included ...........................................................................................................188
16.8 Options ............................................................................................................188
16.9 Electrical ..........................................................................................................188
16.9.1 AC Power ..................................................................................................188
16.9.2 On Simulated Wireline ..............................................................................188
16.10 Environmental ...............................................................................................189
16.11 Physical ..........................................................................................................189
16.12 Operating Conditions ....................................................................................189
17. SAFETY ..............................................................................................................190
17.1 Information ......................................................................................................190
17.1.1 Protective Grounding (Earthing) ..............................................................190
17.1.2 Before Operating the Unit ........................................................................190
17.1.3 Power Supply Requirements .....................................................................191
17.1.4 Main Fuse Type ........................................................................................191

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17.1.5 Connections to a Power Supply ................................................................191
17.1.6 Operating Environment ............................................................................191
17.1.7 Class of Equipment ...................................................................................191
17.2 Instructions ......................................................................................................191
17.2.1 Before Operating the Unit ........................................................................192
17.2.2 Operating the Unit ....................................................................................192
17.3 Symbols ...........................................................................................................193
APPENDIX A. INTERPRETATION OF LEVEL UNITS ....................195
APPENDIX B. DLS 200 MODE ......................................................................198
APPENDIX C. MEASUREMENTS ...............................................................199
C.1 Measurement of Wireline Simulators ...............................................................199
C.2 Common Errors ................................................................................................200
APPENDIX D. NOISE GENERATOR CONNECTIONS ....................201
APPENDIX E. COMMONLY ASKED QUESTIONS ............................204
APPENDIX F. PROGRAM EXAMPLE .......................................................206
F.1 Downloadable Crosstalk Noise .........................................................................206
F.2 Captured Programming Commands ..................................................................210

DLS 400 Operating Manual
Page x
Table of Figures
Figure 3.1 DLS 400 Front Panel ....................................................................................5
Figure 3.2 DLS 400 Back Panel .....................................................................................6
Figure 3.3 DLS 400 Internal Connection Paths .............................................................8
Figure 4.1 Initial Screen ...............................................................................................14
Figure 4.2 Main Control Screen ...................................................................................15
Figure 4.3 System Configuration Screen .....................................................................15
Figure 4.4 Control Screen showing CSA Loop #4 .......................................................16
Figure 4.5 Load Impairments Combination from Standards ........................................18
Figure 4.6 Impairments Control Panel .........................................................................19
Figure 4.7 Editing Impairments Screen ........................................................................21
Figure 4.8 Edit Longitudinal Voltage ...........................................................................23
Figure 4.9 Impulse Control Screen ...............................................................................24
Figure 6.1 System Configuration Screen .....................................................................38
Figure 6.2 Loading all impairments .............................................................................42
Figure 6.3 Impairments combinations ..........................................................................42
Figure 6.4 Impairment Generators Block Diagram ......................................................47
Figure 6.5 Cook Pulse ..................................................................................................51
Figure 6.6 ADSL Impulse c1 .......................................................................................51
Figure 6.7 ADSL Impulse c2 .......................................................................................52
Figure 6.8 ANSI Longitudinal Load Configuration .....................................................54
Figure 6.9 ETSI Longitudinal Load Configuration ......................................................54
Figure 11.1 T1.601 NEXT ...........................................................................................162
Figure 11.2 DSL NEXT ...............................................................................................162
Figure 11.3 HDSL NEXT ............................................................................................163
Figure 11.4 HDSL + ADSL NEXT ..............................................................................163
Figure 11.5 T1.413 II EC ADSL upstream NEXT .......................................................164
Figure 11.6 T1.413 II EC ADSL upstream FEXT (9 kft 26 AWG) .............................164
Figure 11.7 T1.413 II FDM ADSL upstream NEXT/
ITU-T NA ADSL Upstream NEXT ..........................................................165
Figure 11.8 ITU-T NA FDM ADSL Downstream FEXT ............................................165
Figure 11.9 ITU-T NA ADSL Upstream FEXT ..........................................................166
Figure 11.10 HDSL2 downstream NEXT (H2TUC) .....................................................166
Figure 11.11 HDSL2 upstream NEXT (H2TUR) ..........................................................167
Figure 11.12 ITU-T Euro-K or Kirkby noise .................................................................167
Figure 11.13 ADSL FEXT (T1.413, Issue I & II) ..........................................................168
Figure 11.14 Model A ....................................................................................................168