Name: Intel 1000BASE-T
Brand: Intel
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100Base-TX Duty Cycle Distortion (DCD)

1000BASE-T/100BASE-TX/10BASE-T Physical Layer Compliance Tests Manual

54 Intel Confidential

Figure 13-4. Positive Pulse Width at 50%

Figure 13-5. MLT-3 mid-level width at 50% levels

Table of Contents5
Introduction11
- Reference Documents11
- Basic Concepts11
- Required Test Equipment14
- Required Test Fixtures15
- Required Software and Data Patterns15
- PHY Conformance Tests16
1000BASE-T Peak Differential Output Voltage and Level Accuracy19
- Test Purpose19
- Specification19
- Peak Differential Output Voltage and Level Accuracy19
- Test Equipment20
- Test Fixtures20
- Test Procedure20
1000BASE-T Maximum Output Droop25
- Test Purpose25
- Specification25
- Maximum Output Droop25
- Test Equipment26
- Test Fixtures26
- Test Procedure26
1000BASE-T Receiver Differential Input Signals (Bit Error Rate)29
- Test Purpose29
- Specification29
- Test Equipment29
- Test Fixtures29
- Test Procedure29
- Calculating Bit Error Rate (BER)30
1000BASE-T Alien Crosstalk Noise Rejection31
- Test Purpose31
- Specification31
- Test Equipment31
- Test Fixtures31
- Test Procedure31
1000BASE-T MDI Return Loss33
- Test Purpose33
- Specification33
- Test Equipment33
- Test Fixtures33
- Test Procedure33
1000BASE-T MDI Common-Mode Output37
- Test Purpose37
- Specification37
- Test Equipment37
- Test Fixtures37
- Test Procedure37
100BASE-TX Differential Output Voltage (UTP)41
- Test Purpose41
- Specification41
- Test Equipment41
- Test Fixtures42
- Test Procedure42
100BASE-TX Waveform Overshoot45
- Test Purpose45
- Specification45
- Test Equipment46
- Test Fixtures46
- Test Procedure46
100Base-TX Signal Amplitude Symmetry49
- Test Purpose49
- Specification49
- Test Procedure49
11 100Base-TX Transmitter Return Loss51
- Test Purpose51
- Specification51
- Test Equipment51
- Test Fixtures51
- Test Procedure51
100Base-TX Rise and Fall Times55
- Test Purpose55
- Specification55
- Test Equipment56
- Test Fixtures56
- Test Procedure56
100Base-TX Duty Cycle Distortion (DCD)61
- Test Purpose61
- Specification61
- Test Equipment61
- Test Fixtures62
- Test Procedure62
14 100Base-TX Transmit Jitter67
- Test Purpose67
- Specification67
- Test Equipment67
- Test Fixtures67
- Test Procedure67
100Base-TX Differential Input Signals (BER)69
- Test Purpose69
- Specification69
- Test Equipment69
- Test Fixtures70
- Test Procedure70
- Calculating Bit Error Rate (BER)70
100Base-TX Receiver Return Loss73
- Test Purpose73
- Specification73
- Test Equipment73
- Test Fixtures73
- Test Procedure73
10Base-T Peak Differential Output Voltage on TD Circuit77
- Test Purpose77
- Specification77
- Test Equipment77
- Test Fixtures77
- Test Procedure78
18 10Base-T Harmonic Content81
- Test Purpose81
- Specification81
- Test Equipment81
- Test Fixtures81
- Test Procedure81
10Base-T TD Circuit Impedance (Transmitter Return Loss)83
- Test Purpose83
- Specification83
- Test Equipment83
- Test Fixtures83
- Test Procedure83
10Base-T TD Circuit Common-Mode Output Voltage87
- Test Purpose87
- Specification87
- Test Equipment87
- Test Fixtures87
- Test Procedure87
10Base-T Transmitter Output Timing Jitter with Cable Model91
- Test Purpose91
- Specification91
- Test Equipment91
- Test Fixtures91
- Test Procedure91
10Base-T Transmitter Output Timing Jitter Without Cable Model95
- Test Purpose95
- Specification95
- Test Equipment95
- Test Fixtures95
- Test Procedure95
10Base-T RD Receiver Circuit Signal Acceptance Test (BER)99
- Test Purpose99
- Specification99
- Test Equipment99
- Test Fixtures100
- Test Procedure100
- Calculating Bit Error Rate (BER)100
10Base-T RD Circuit Differential Input Impedance (Receiver Return Loss)103
- Test Purpose103
- Specification103
- Test Equipment103
- Test Fixtures103
- Test Procedure103
- 1000Base-T Test Fixtures and Calibration Load Fixtures107
- Fixture 40-25107
- Fixture 40.6.1.1.1.A - Differential Breakout Cable108
- Fixture 40.6.1.1.1 - Test Cable108
- Fixture 40.8.3.1.A110
- Fixture 40.8.3.1.B110
- Fixture 40.8.3.1.C111
- Fixture 40-28A111
- Fixture 40-28B112
- Fixture 40-32112
- Test Fixture Construction Tips and Information115
- General Test Fixture Construction Guidelines115
- Connector Pin-Out, and Ethernet Cable Wire Assignment116
- Worst-Case Cable for Jitter117
- Constructing the 120-Ohm Impedance Segments (L1 and L3)117
- Other Test Fixtures121
- 100 Ohm UTP Test Load121
- 100Base-TX Balun Test Fixture121
- Open Circuit Inductance Test Fixture121
- Receiver Common-Mode Rejection Test Fixture122
- 10Base-T Balun Test Fixture123
- Common-Mode Output Voltage Test Circuit (Fixture 14-14)123
10BASE-TX 14_7 Twisted-Pair Model124
Building and Testing UTP LAN Cables to Insertion Loss Specifications125
Purpose125
- Network Analyzer Setup and Calibration125
- Measuring the Insertion Loss of the Twisted Pair Cable126
Alternate Insertion Loss Measurement Techniques127
Reducing Measurement Error by Avoiding Cable Bending129
Troubleshooting Guide133
Test Problems133
- Oscilloscope Setups133
- Network Analyzer Setups134
Conformance Problems134
Differential Output Voltage (UTP) (ANSI Specification 9.1.2.2)134
Overshoot (ANSI Specification 9.1.3)135
Amplitude Symmetry (ANSI Specification 9.1.4)135
Return Loss (ANSI Specifications 9.1.5 and 9.2.2)136
Rise and Fall Times (ANSI Specification 9.1.6)136
Open Circuit Inductance (ANSI Specification 9.1.7)136
Duty Cycle Distortion (ANSI Specification 9.1.8)137
Transmit Jitter (ANSI Specification 9.1.9)138
Differential Input Signals (ANSI Specification 9.2.1)139
Receiver Common Mode Rejection (ANSI Specification 9.2.3)139
Manual Register Settings141
82540 And 82546 Families141
82541 And 82547 Families142
82544 Family142
100Base-TX Test Procedure for the 82544 Chip145
Introduction145
Equipment Used for this Procedure145
Specification 9.1.2.2 - Differential Output Voltage (UTP)146
- Test Case146
- Test Purpose146
- Specification147
- Test Equipment147
- Test Fixtures147
- Test Procedure147
Specification 9.1.6 - Rise/Fall Times150
- Test Purpose150
- Specification150
- Test Equipment150
- Test Fixtures151
- Test Procedure151
- Notes for Using Pulse-Width Triggering151
- 10% and 90% of Positive Peak Voltage Calculations156
- 9.1.6 Rise and Fall Times157
Test Case158
Test Purpose158
Specification158
Test Equipment158
Test Fixtures158
Specification 9.1.8 - Duty Cycle Distortion (DCD)158
Test Procedure159
Generic Oscilloscope Settings159
Duty Cycle Distortion Data161

Intel 1000BASE-T User Manual

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Intel 1000BASE-T Specifications

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Brand	Intel
Model	1000BASE-T
Category	Adapter
Language	English