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Agilent Technologies E5071C Compliance Tests

Agilent Technologies E5071C Compliance Tests

Esa displayport phy compliance test standard version 1 revision 2b agilent method of implementation (moi) for displayport cable compliance tests
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Agilent MOI for DisplayPort Cable & Connector Compliance Tests
Revision 3.01
Feb-18,
2013
VESA DisplayPort
PHY Compliance test Standard Version 1 Revision 2b
Agilent Method of Implementation (MOI) for DisplayPort
Cable Compliance Tests
Using Agilent E5071C ENA Option TDR
1

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  • Page 1 Agilent MOI for DisplayPort Cable & Connector Compliance Tests Revision 3.01 Feb-18, 2013 VESA DisplayPort PHY Compliance test Standard Version 1 Revision 2b Agilent Method of Implementation (MOI) for DisplayPort Cable Compliance Tests Using Agilent E5071C ENA Option TDR...

  • Page 2: Table Of Contents

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests Table of Contents Modification Record ....................... 4 Purpose ........................... 4 References ........................4 Resource Requirements ....................4 Test Procedure ........................ 5 5.1. Outline of Test Procedure ..................5 5.2. Instrument Setup ....................... 6 5.3.
  • Page 3 Agilent MOI for DisplayPort Cable & Connector Compliance Tests 6.3. Manual Setup for Frequency Domain Measurement ..........35 6.3.1. Channel and Trace Settings ................35 6.3.2. Common Settings .................... 36 6.3.3. Far End Noise (FEN) Measurement (Normative) ........... 36 6.3.4. Return Loss Measurement (Normative) ............37 6.3.5.

  • Page 4: Modification Record

    Update the model number of required test fixture. Feb 18, 2013 2. Purpose This test procedure was written to explain how to use the Agilent E5071C ENA Option TDR to make the measurements required per VESA DisplayPort Standard Version 1, Revision 2a.

  • Page 5: Test Procedure

    - Return Loss Measurements (Normative). - Near End Noise (NEN) Measurements. - Far End Noise (FEN) Measurements (Normative). Note: Hard Keys (Keys located on the Front panel of E5071C) are displayed in Blue color and Bold. (Example: Avg, Analysis) Note: Soft keys (Keys on the screen) are displayed in Bold. (Example: S11, Real, Transform)

  • Page 6: Instrument Setup

    If you use your local PC to download, save the state file to a USB mass storage device in order to move it to E5071C. Connect the USB mass storage device into the front USB port of the E5071C. For manual settings, refer to Appendix.

  • Page 7: Connection Configuration

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 5.3. Connection Configuration This Section describes the screen configuration of the E5071C-TDR and the cable connection. Figure 5-1: Measurement screen description. Channel 1 for time domain measurement is controlled by the TDR user interface at the bottom of the screen and Channel 2 for frequency domain measurement is controlled by the soft-key on the right-side of the screen and hard-key on the instrument front panel.
  • Page 8 Agilent MOI for DisplayPort Cable & Connector Compliance Tests Figure 5-2: Cable connection The cables and fixtures should be connected to the instrument as shown in the figure above. Table 5-1 shows the cable connection for each measurement item. The measurement items of the same cable connection can be done simultaneously.
  • Page 9 Agilent MOI for DisplayPort Cable & Connector Compliance Tests A ML3+ A ML3- B ML3+ B ML3- A AUX+ A AUX- B AUX+ B AUX- A ML0+ A ML0- A AUX+ A AUX- A ML1+ A ML1- A AUX+ A AUX-...

  • Page 10: Calibration

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests Description of Measurement Window Background colors coincide with the table in the previous page. 5.4. Calibration 5.4.1. Time Domain Calibration 5.4.1.1. Deskew & Loss Compensation Calibration 1. Press Channel Next key to select Channel 1.
  • Page 11 Agilent MOI for DisplayPort Cable & Connector Compliance Tests 5. Select standard type (item 4) to Short. 6. Connect “Short” standard to Port1. 7. Click Port 1 (item 5). Wait until the check-mark appears under Port1. 8. Connect “Short” standard to Port2.
  • Page 12 Agilent MOI for DisplayPort Cable & Connector Compliance Tests 17. Click Measure (item 10). 18. Click Next (item 11). 19. Connect “Thru” standard between Port 2 and Port 4. 20. Click Measure (item12). 21. Click Next (item13). 22. Connect “Load” standard to Port 1.
  • Page 13 Agilent MOI for DisplayPort Cable & Connector Compliance Tests 23. Click Port 1 (item 14). Wait until the check-mark appears under Port 1. 24. Connect “Load” standard to Port 2. 25. Click Port 2 (item 15). Wait until the check-mark appears under Port 2.

  • Page 14: Frequency Domain Calibration

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests ENA Port Number Port1 Port2 Port3 Port4 Fixture Pin Number A ML0+ A ML0- B ML0+ B ML0- A: Source Side, B: Sink Side 3. Click Measure (item 1). 4. Click Finish (item 2).
  • Page 15 Agilent MOI for DisplayPort Cable & Connector Compliance Tests 5.4.2.2. TRL Calibration 1. Press Channel Next key to select channel 2. 2. Press key. 3. Click Cal kit and select Cal kit which you previously defined. 4. Click Calibrate > 4-Port TRL Cal.

  • Page 16: Set System Impedance (Optional)

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests e) Click Line/Match 2[Line1]. f) Connect “Line2” standard between Port 1 and Port 2. g) Click Line/Match 3[Line2]. h) Connect “Line3” standard between Port 1 and Port 2. i) Click Line/Match 4[Line3].

  • Page 17: Measurement And Data Analysis

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 5.5. Measurement and Data Analysis 5.5.1. Bulk Cable and Connector Impedance 5.5.1.1. Load Limit File Using limit line files distributed on www.agilent.com/find/ena-tdr_dp-cabcon, the ENA automatically performs pass/fail test. Since pass/fail criteria vary depending on the Bit rate, cable category or connector type, appropriate limit line files should be loaded prior to making measurements.

  • Page 18: Intra-Pair Skew

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests A: Source Side, B: Sink Side 2. Connect Display Port cable to the test fixture. 3. Press Channel Next key to select Channel 1. 4. Press Channel Max key to enlarge Channel 1.

  • Page 19: Insertion Loss

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests Intra-pair Skew Upper Limit for High Bit Rate Cable Assembly Cable Category Limit Cable Assembly delta time <= 50 ps, then Pass. Otherwise Fail. Resizing Adaptor delta time <= 10 ps, then Pass. Otherwise Fail.

  • Page 20: Return Loss

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 5.5.3.3. Data Analysis Read Pass/Fail signs on Trace 3. (item 1 in Figure 5-4). Figure 5-4: Frequency Domain Measurement Example 5.5.4. Return Loss 5.5.4.1. Load Limit File Refer to 5.5.1.1. Table 5-5 Return Loss Limit Line File for Trace 2 and Trace 6 in Channel 2...

  • Page 21: Inter- Pair Skew

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 5.5.4.3. Data Analysis Read Pass/Fail signs on Trace 3. (item 2 in Figure 5-4). 5.5.5. Inter- pair Skew Measurement 1. Connect the test fixture to the test cables according to Table 5-3. Unused test ports should be terminated.

  • Page 22: Near End Noise (Nen)

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests Note: UI (Unit Interval) is the reciprocal of the bit rate. At 5.4 Gbps, the UI = 185 ps. At 2.7 Gbps, the UI = 370.4 ps. At 1.62 Gbps, the UI = 617 ps.

  • Page 23: Far End Noise (Fen)

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 3. Press Channel Next key to select Channel 2. 4. Press Channel Max key to enlarge Channel 2. 5. Press Trigger > Single for Frequency Domain measurement. 5.5.6.3. Data Analysis Read Pass/Fail sign on Trace 4 (item 1 in Figure 5-5).
  • Page 24 Agilent MOI for DisplayPort Cable & Connector Compliance Tests Since the number of aggressor channels depends on the victim channel, use an appropriate trace for each test according to the Table 5-8. For test number 2 to 4 (dual aggressor test), the crosstalk measurements need to be performed separately on each combination of victim-aggressor, and combine the results to calculate Far End Noise.
  • Page 25 Agilent MOI for DisplayPort Cable & Connector Compliance Tests 5.5.7.2. Insertion Loss Measurement of Victim channel 1. Connect the test cables to the victim channel according to Table 5-10. Unused test ports should be terminated. 2. Select trace 3. 3. Press Trigger >...
  • Page 26 Agilent MOI for DisplayPort Cable & Connector Compliance Tests 5.5.7.4. Measurement Setup for Dual-Aggressor 1. Connect the test fixture to the test port cables according to Table 5-12. Unused test ports should be terminated. Table 5-12 Far End Noise Connection for Dual Aggressor 1...
  • Page 27 Agilent MOI for DisplayPort Cable & Connector Compliance Tests Note: Once you finish the measurement, switch the Display Port cable end and repeat the same measurement for the opposite direction. Figure 5-6: Far End Noise Measurement Example.

  • Page 28: Appendix

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 6. Appendix 6.1. Defining a calibration Kit To change the definition of a calibration kit, follow the procedure below. 1. Press key. 2. Click Cal Kit > User 3. Click Modify Kit > Label Kit [User], then type in a name you want.
  • Page 29 Agilent MOI for DisplayPort Cable & Connector Compliance Tests 3. Offset Delay : Value defined by the fixture 4. Offset Z0 : Value defined by the fixture 5. Offset Loss : Value defined by the fixture 6. Min. Frequency : Value defined by the fixture 7.
  • Page 30 Agilent MOI for DisplayPort Cable & Connector Compliance Tests 4. Offset Z0 : Value defined by the fixture 5. Offset Loss : Value defined by the fixture 6. Min. Frequency : Value defined by the fixture 7. Max. Frequency : Value defined by the fixture 8.

  • Page 31: Manual Setup For Time Domain Measurement

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 6.2. Manual Setup for Time Domain Measurement 6.2.1. Starting Setup 1. If TDR setup wizard was appeared, click Close button in the TDR setup wizard. 2. Open Setup tab (item 1).

  • Page 32: Bulk Cable And Connector Impedance Measurements (Normative)

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 6.2.2. Bulk Cable and Connector Impedance Measurements (Normative) 6.2.2.1. Measurement Setup 1. Click Stop Single. 2. Open TDR/TDT tab. 3. Click Trace Control tab. 4. Clear Time Marker check box under Coupling.

  • Page 33: Intra-Pair Skew Measurement (Normative)

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 22. Click Close. 23. Select Trace 24. Open Parameters tab. 25. Click Tdd22. 6.2.3. Intra-Pair Skew Measurement (Normative) 6.2.3.1. Measurement Setup 1. Select Trace 2. Open Parameters tab. 3. Select Measure to Time Domain and Single-Ended (item 1).
  • Page 34 Agilent MOI for DisplayPort Cable & Connector Compliance Tests 18. Select the Trace 2 in the From list. 19. Select the Trace 6 in the To list. 20. Click Copy. 21. Click Close. 22. Select Trace 23. Open Parameters tab.

  • Page 35: Inter-Pair Skew Measurements (Normative)

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 6.2.4. Inter-pair Skew Measurements (Normative) 6.2.4.1. Measurement Setup 1. Select Trace 2. Open Parameters tab. 3. Select Rise Time to 10-90 % and input value to 50 psec. 4. Click the box below the left knob under Horizontal. Then Entry dialog box appear.

  • Page 36: Common Settings

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 6.3.2. Common Settings 1. Press Sweep Setup > Sweep Type > Log Freq. 2. Set Points to 201. 3. Press Start > Set start value to 10 MHz. 4. Press Stop >...

  • Page 37: Return Loss Measurement (Normative)

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 6.3.4. Return Loss Measurement (Normative) 1. Select Trace 2. 2. Press Analysis. 3. Click Fixture Simulator > BalUn and turn it ON. 4. Click Measurement > Sdd11. 5. Press Scale > Set Divisions to 10.

  • Page 38: Limit Test Settings

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 2. Press Analysis. 3. Click Fixture Simulator > BalUn and turn it ON. 4. Click Measurement > Sdd21. 5. Press Scale > Set Divisions to 10. 6. Set Scale/Div to 5 dB/div.

  • Page 39: Calculating Formula For Limit Line

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 1. Press Channel Next key and Trace Next key to activate the trace on which limit lines should be set. 2. Press Analysis > Limit Test > Edit Limit Line to display the limit table shown below (Initially, no segments are entered in the limit table).
  • Page 40 Agilent MOI for DisplayPort Cable & Connector Compliance Tests Connector 100 ohm +-10 % Wire management 100 ohm +-10% Transition from +-10% to +- 5% must Cable 100 ohm +-5 % have a slope of 5 ohm/80ps Impedance Profile Measurement Impedance Limits & Connector Profile Example...

  • Page 41: Insertion Loss

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 6.5.2. Insertion Loss Insertion Loss Lower Limit for High Bit Rate Cable Assembly Insertion Loss Lower Limit for High Bit Rate Resizing Adaptors...

  • Page 42: Return Loss

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests Insertion Loss Lower Limit for Extension Cable Insertion Loss Lower Limit for Reduced Bit Rate Cable Assembly 6.5.3. Return Loss Return Loss Upper Limit for High Bit Rate Cable Assembly/Adaptor (full-size DP...
  • Page 43 Agilent MOI for DisplayPort Cable & Connector Compliance Tests connector) Return Loss Upper Limit for High Bit Rate Cable Assembly/Adaptor/Extension Cable (mini DP connector) Return Loss Upper Limit Reduced Bit Rate Cable Assembly...

  • Page 44: Near End Noise (Nen)

    Agilent MOI for DisplayPort Cable & Connector Compliance Tests 6.5.4. Near End Noise (NEN) Near End Noise Upper Limit for High Bit Rate Cable Assembly Near End Noise Upper Limit for Reduced Bit Rate Cable Assembly 6.5.5. Far End Noise (FEN) The Power Sum Equal Level Far End Noise specification applies to all cable assembly types.
  • Page 45 Agilent MOI for DisplayPort Cable & Connector Compliance Tests Far End Noise Upper Limit for High Bit Rate Cable Assembly Far End Noise Upper Limit for Reduced Bit Rate Cable Assembly PSELFEN [dB] = -26...

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E5071c ena option tdr

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