Keysight N5990A-155 User Manual
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Keysight N5990A-155 User Manual

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  • Page 1 Keysight N5990A-155 DisplayPort User Guide...
  • Page 2 DFARS and are set forth specifically in Technology Licenses dure, practice, or the like that, if not writing elsewhere in the EULA. Keysight correctly performed or adhered to, The hardware and/or software described in shall be under no obligation to update,...

  • Page 3: Table Of Contents

    Use Variable ISI Channel Use Internal ISI AUX Controller Use Rx Switch Support for Type-C PDOs Test Instrument Configuration Starting the DisplayPort Station Configure DUT Configuration Parameters Sink PHY Test Parameters 3 Using the Software Introduction Keysight N5990A-155 DisplayPort User Guide...
  • Page 4 Random Jitter Calibration High Speed Sinusoidal Jitter Calibration Common Mode Interference Calibration Fixed Sinusoidal Jitter Calibration Intersymbol Interference (ISI) Calibration Total Jitter Calibration Eye Opening Calibration Compliance Eye Height and Eye Width Verification Aggressor Amplitude Calibration Keysight N5990A-155 DisplayPort User Guide...
  • Page 5 Contents 5 Receiver Tests DisplayPort Receiver Tests Jitter Tolerance Test Jitter Tolerance Characterization Test Data Rate Deviation Test Sensitivity Test Variable Parameter Test Keysight N5990A-155 DisplayPort User Guide...
  • Page 6 Contents Keysight N5990A-155 DisplayPort User Guide...
  • Page 7 Keysight N5990A-155 DisplayPort User Guide Introduction Overview Document History...

  • Page 8: Overview

    Introduction Overview The BitifEye “ValiFrame” Test Automation software is globally marketed and supported by Keysight Technologies as N5990A. This document describes the calibrations and test procedures conducted by N5990A ValiFrame for DisplayPort in detail. The N5990A software implements the compliance tests according to the requirements of the latest DP1.4 / Type-C MOI (Methods of...

  • Page 9: Document History

    1.2 Third Edition (December, 2017) The third edition of this user guide describes functionality of software version 2.24.20171025 Fourth Edition (November, 2019) The fourth edition of this user guide describes functionality of software version 3.0 Keysight N5990A-155 DisplayPort User Guide...
  • Page 10 Introduction Keysight N5990A-155 DisplayPort User Guide...

  • Page 11: Valiframe Displayport Station Configuration

    Keysight N5990A-155 DisplayPort User Guide ValiFrame DisplayPort Station ValiFrame DisplayPort Station Configuration / 12 / 18 Starting the DisplayPort Station Configure DUT / 20 Refer to the Valiframe “N5990A Installation Guide” for instructions on how to install and start the ValiFrame Test Automation software platform. After...

  • Page 12: Test Station Selection

    Valiframe Configuration Wizard window appears as shown in Figure The available Test Stations are listed in the Select Station drop-down options. Multiple entries can be generated through User Programming (N5990A opt. 500) and the required station can be selected. Keysight N5990A-155 DisplayPort User Guide...
  • Page 13 Dialog Prompt plays the selected sound at each dialog prompt. Select a sound tone from the following options available in the drop-down options. The option ‘None’ disables the sound for the respective action. • Car brake • Feep Feep • Ringing • TaDa • Keysight N5990A-155 DisplayPort User Guide...

  • Page 14: Test Station Configuration

    Support for Type-C PDOs Figure 3 DisplayPort Station Configuration Window Pattern Generator: The pattern generator is used to create patterns with specified stress parameters. Available option is: • Keysight J-BERT M8020A High Performance Serial BERT Keysight N5990A-155 DisplayPort User Guide...

  • Page 15: Use Variable Isi Channel

    BIT2100A and BIT2100B. Support for Type-C PDOs Check the option “Support for Type-C PDOs” for Type-C PDO tests. You must also choose a power supply from the following drop-down options: • Keysight N67xx Keysight N5990A-155 DisplayPort User Guide...

  • Page 16: Test Instrument Configuration

    PC, the instrument address must be entered. The address depends on the bus type used for the connection, for example, GPIB (General Purpose Interface BUS) or LAN (Local Area Network). Most of the instruments used in the DisplayPort station use a Keysight N5990A-155 DisplayPort User Guide...
  • Page 17 ValiFrame DisplayPort Station VISA (Virtual Instrument System Architecture) connection. To determine the VISA address, run the Connection Expert (right-click the Keysight IO Control icon in the task bar and select the first entry Connection Expert). Copy the address string for each instrument from the Connection Expert entries and paste it as the instrument address in the Station Configuration Wizard.

  • Page 18: Starting The Displayport Station

    Valiframe (N5990A) icon on the desktop as shown in Figure Alternatively, click Start > BitifEye DisplayPort N5990A > DP ValiFrame (N5990A). Figure 5 ValiFrame DisplayPort Station Icon The N5990A Test Automation Software Platform window shown is displayed as shown in Figure Keysight N5990A-155 DisplayPort User Guide...
  • Page 19 The test parameters must be configured before running any test or calibration procedures. Click Configure DUT to open the “DisplayPort Configure Product” window (Figure 7). Alternatively, you may select the “Configure DUT” option from the “File” menu. Keysight N5990A-155 DisplayPort User Guide...

  • Page 20: Configure Dut

    Figure 7 Configure DUT Panel Configuration Parameters Figure 7, various parameters, such as Product Type, CTS Version and Compliance Mode or Expert Mode can be selected. The description for all such parameters are listed in Table Keysight N5990A-155 DisplayPort User Guide...

  • Page 21: Sink Phy Test Parameters

    This configuration appears when the option DP Sink is selected as the Product Type. There are two parameter groups, which offer different possibilities for running the test and calibrations: • Basic parameters, such as the data rates supported by the DUT. See Figure Keysight N5990A-155 DisplayPort User Guide...
  • Page 22 ValiFrame DisplayPort Station Figure 8 Sink - Basic configuration parameters • Advanced parameters, which have useful features for debugging purposes. See Figure Figure 9 Sink - Advanced configuration parameters Keysight N5990A-155 DisplayPort User Guide...
  • Page 23 An ISI calibration for each lane is performed. If this check box is not selected, the same ISI calibration table is used for every lane test. This is recommended if the BitifEye DP-RTF-0001 or the BitifEye DP-RTF-0002 receptacle fixture is used. Keysight N5990A-155 DisplayPort User Guide...
  • Page 24 After clicking this button, the capabilities of the DUT are requested via the AUX Controller. Optionally, the tests can then be configured according to these capabilities. This button is only visible, if an AUX-controller is connected. Keysight N5990A-155 DisplayPort User Guide...
  • Page 25 Keysight N5990A-155 DisplayPort User Guide Using the Software Introduction / 26 Selecting, Modifying and Running Tests / 28 Results / 30 DisplayPort Parameters / 32...

  • Page 26: Introduction

    The parameter grid on the right side of the window shows the parameters, which are related to the selected calibration or to test procedure subgroups or to individual procedures. These parameters can be set only before running the procedure subgroup or prior to starting the Keysight N5990A-155 DisplayPort User Guide...
  • Page 27 All calibrations can be run in offline mode, that is, without any instrument connected. The offline mode is intended for product demonstrations with simulated data. CALIBRATIONS RUN IN OFFLINE MODE DO NOT GENERATE VALID CALIBRATION DATA. Keysight N5990A-155 DisplayPort User Guide...

  • Page 28: Selecting, Modifying And Running Tests

    The test parameters selected also appear in the MS Excel/HTML test results worksheets, at the end of the procedure runs. Keysight N5990A-155 DisplayPort User Guide...

  • Page 29: Running Procedures

    DUT parameters. The required action is prompted in pop-up dialog boxes prior to the calibration/test runs. The connection diagram is also displayed by right-clicking the desired test or calibration and selecting “Show Connection”. Keysight N5990A-155 DisplayPort User Guide...

  • Page 30: Results

    In order to save the calibration data files for each configuration, the files must be copied from the directory: C:\ ProgramData\BitifEye\ValiFrameK0\DisplayPort\Calibrations and saved manually in another folder before rerunning the calibrations. Keysight N5990A-155 DisplayPort User Guide...

  • Page 31: Smiley's Representation

    In this example, the first half indicates that the procedure passed successfully in the present instance and the second half means that it was not completely run in the previous instance. Keysight N5990A-155 DisplayPort User Guide...

  • Page 32: Displayport Parameters

    Similar to all other parameters, the sequencer parameters are displayed on right side of the ValiFrame user interface and they can be changed manually, as illustrated in Figure Figure 12 Sequencer Parameters Keysight N5990A-155 DisplayPort User Guide...

  • Page 33: Common Parameters

    The DisplayPort Receiver Test Software has some group parameters (in addition to “Repetitions”) on the top-level entry of the procedure tree as shown in Table 5. These parameters are common for all ValiFrame procedures. Keysight N5990A-155 DisplayPort User Guide...

  • Page 34: Procedure Parameters

    These parameters only change the behavior of the selected procedure. Procedures often have parameters with the same name, but the configured settings always apply on the selected procedure, and the meaning may be slightly different. Keysight N5990A-155 DisplayPort User Guide...

  • Page 35: Displayport Calibrations

    Keysight N5990A-155 DisplayPort User Guide DisplayPort Calibrations Calibration Overview / 36 Calibration Procedures / 39...

  • Page 36: Calibration Overview

    Measured at TP3 Lane 0 (for all data rates) • Measured at TP3 Lane 1 • Measured at TP3 Lane 2 • Measured at TP3 Lane 3 Table 6 presents a description of the procedure parameters used in the different calibrations. Keysight N5990A-155 DisplayPort User Guide...
  • Page 37 Pattern Period Length Period length of the pattern; this information is required for jitter measurements. It should be changed only when using a custom pattern. Pattern Period Length Automatically determined period length of the pattern. Auto Detect Keysight N5990A-155 DisplayPort User Guide...
  • Page 38 First amplitude value of the output generator. Voltage Minimum Eye Opening Lowest calibrated eye opening voltage. Applied Voltage Step Differential voltage step size for the calibration. At every step, the output voltage is decreased by this value. Keysight N5990A-155 DisplayPort User Guide...

  • Page 39: Calibration Procedures

    Connection Diagram for TP1 Calibration Parameters in Expert Mode • Calibration • Oscilloscope Bandwidth • Measurement Cycles • Pattern • Sequence File • Voltage • Differential Voltage The description for these parameters are listed in Table Keysight N5990A-155 DisplayPort User Guide...
  • Page 40 Connection Diagrams Results Figure 14 HTML Report for Rise Fall Time Measurement Calibration • Measured Rise-Fall Time: The measured value of Rise / Fall Time. Keysight N5990A-155 DisplayPort User Guide...

  • Page 41: Intrinsic Jitter Calibration

    • Calibration • Oscilloscope Bandwidth • Measure TJ with Histogram • Memory Depth • Measurement Cycles • Pattern • Sequence File • Pattern Period Length • Pattern Period Length Auto Detect • • Loop Bandwidth Keysight N5990A-155 DisplayPort User Guide...
  • Page 42 Damping Factor • Voltage • Differential Voltage The description for these parameters are listed in Table Results Figure 16 HTML Report for Intrinsic Jitter Calibration • Measured Total Jitter: The measured value of Total Jitter. Keysight N5990A-155 DisplayPort User Guide...

  • Page 43: Random Jitter Calibration

    Connection Diagram for TP1 Calibration Parameters in Expert Mode • Calibration • Oscilloscope Bandwidth • Measurement Cycles • Memory Cycles • Jitter • Use Explicit Clock • ISI Amplitude • Stop Jitter • Jitter Step Count • Pattern Keysight N5990A-155 DisplayPort User Guide...
  • Page 44 Connection Diagrams • Sequence File • Pattern Period Length • Pattern Period Length Auto Detect • Voltage • Differential Voltage The description for these parameters are listed in Table Keysight N5990A-155 DisplayPort User Guide...
  • Page 45 Connection Diagrams Results Figure 18 HTML Report for Random Jitter Calibration Keysight N5990A-155 DisplayPort User Guide...
  • Page 46 Connection Diagrams • Set Jitter: The value of set jitter at the Jitter Generator instrument. • Measured Jitter: The measured value of Jitter Amplitude. Keysight N5990A-155 DisplayPort User Guide...

  • Page 47: High Speed Sinusoidal Jitter Calibration

    Connection Diagram for TP1 Calibration Parameters in Expert Mode • Calibration • Oscilloscope Bandwidth • Measurement Cycles • Jitter • Use Explicit Clock • ISI Amplitude • Stop Jitter • Jitter Step Counter • SJ_Sweep Frequency Keysight N5990A-155 DisplayPort User Guide...
  • Page 48 Connection Diagrams • Pattern • Sequence File • Pattern Period Length • Pattern Period Length Auto Detect • Voltage • Differential Voltage The description for these parameters are listed in Table Keysight N5990A-155 DisplayPort User Guide...
  • Page 49 Connection Diagrams Results Figure 20 HTML Report for High Speed Sinusoidal Jitter Calibration Keysight N5990A-155 DisplayPort User Guide...
  • Page 50 Connection Diagrams • Set Jitter: The applied Sinusoidal Jitter Sweep Amplitude. • Measured Jitter: The measured value of Jitter Amplitude. Keysight N5990A-155 DisplayPort User Guide...

  • Page 51: Common Mode Interference Calibration

    • Calibration • Oscilloscope Bandwidth • Voltage • CMI Frequency • Target CMI Amplitude • CMI Amplitude Step Size • First CMI Amplitude • Differential Voltage The description for these parameters are listed in Table Keysight N5990A-155 DisplayPort User Guide...
  • Page 52 Connection Diagrams Results Figure 22 HTML Report for Common Mode Interference Calibration • Set CMI: The applied Common Mode Interference Amplitude. Keysight N5990A-155 DisplayPort User Guide...
  • Page 53 Connection Diagrams • Measured CMI: Measured amplitude on the scope. Keysight N5990A-155 DisplayPort User Guide...

  • Page 54: Fixed Sinusoidal Jitter Calibration

    Connection Diagram for TP1 Calibration Parameters in Expert Mode • Calibration • Oscilloscope Bandwidth • Measurement Cycles • Jitter • Use Explicit Clock • ISI Amplitude • Stop Jitter • Jitter Step Count • Pattern • Sequence File Keysight N5990A-155 DisplayPort User Guide...
  • Page 55 Connection Diagrams • Pattern Period Length • Pattern Period Length Auto Detect • Voltage • Differential Voltage The description for these parameters are listed in Table Keysight N5990A-155 DisplayPort User Guide...
  • Page 56 Connection Diagrams Results Figure 24 HTML Report for Fixed Sinusoidal Jitter Calibration • Set Jitter: The applied sinusoidal jitter amplitude fixed at 200MHz. • Measured Jitter: Measured fixed jitter amplitude. Keysight N5990A-155 DisplayPort User Guide...

  • Page 57: Intersymbol Interference (Isi) Calibration

    ISI manually using another method. The ISI Calibration procedure is available for each supported data rate; for TP2 and TP3; and for Lane0. Connection Diagram Figure 25 Connection Diagram for ISI Calibration Keysight N5990A-155 DisplayPort User Guide...
  • Page 58 Measurement Cycles • Jitter • ISI Amplitude • Pattern • Sequence File • Pattern Period Length • Pattern Period Length Auto Detect • Voltage • Differential Voltage The description for these parameters are listed in Table Keysight N5990A-155 DisplayPort User Guide...
  • Page 59 Connection Diagrams Results Figure 26 HTML Report for ISI Calibration Keysight N5990A-155 DisplayPort User Guide...
  • Page 60 Connection Diagrams • Set Variable ISI Value: The set value of the Variable ISI. • Measured ISI (mUI): The averaged value of the ISI measurements. Keysight N5990A-155 DisplayPort User Guide...

  • Page 61: Total Jitter Calibration

    To pass the calibration, the measured TJ should be within the target range. This calibration is only available for HBR3 data rate, for TP2 and TP3; and for Lane0. Repeat this calibration for different SJ SWEET frequencies: 500KHz, 1MHz, 2MHz, 10MHz, 20MHz and 100MHz. Keysight N5990A-155 DisplayPort User Guide...
  • Page 62 Jitter Step Count • SJ_sweep Frequency • Pattern • Sequence File • Pattern Period Length • Pattern Period Length Auto Detect • Voltage • Differential Voltage The description for these parameters are listed in Table Keysight N5990A-155 DisplayPort User Guide...
  • Page 63 43. • High Speed Sinusoidal Jitter Calibration on page 47. • Common Mode Interference Calibration on page 51. • Fixed Sinusoidal Jitter Calibration on page 54. • Intersymbol Interference (ISI) Calibration on page 57. Keysight N5990A-155 DisplayPort User Guide...
  • Page 64 Connection Diagrams Results Figure 28 HTML Report for Total Jitter Calibration Keysight N5990A-155 DisplayPort User Guide...
  • Page 65 Connection Diagrams • Set Jitter: The applied sinusoidal jitter sweep amplitude. • Measured Jitter: Measured jitter amplitude. Keysight N5990A-155 DisplayPort User Guide...

  • Page 66: Eye Opening Calibration

    The eye opening is measured and averaged over a number of cycles. This calibration procedure is available for each supported data rate; for TP2 and TP3; and for each Lane. Keysight N5990A-155 DisplayPort User Guide...
  • Page 67 ISI Amplitude • RJ Amplitude (RMS) • SJ Frequency • Pattern • Sequence File • Voltage • Differential Voltage • Applied Voltage Step • Target Eye Opening The description for these parameters are listed in Table Keysight N5990A-155 DisplayPort User Guide...
  • Page 68 Connection Diagrams Dependencies • Random Jitter Calibration on page 43. • Fixed Sinusoidal Jitter Calibration on page 54. • Intersymbol Interference (ISI) Calibration on page 57. Keysight N5990A-155 DisplayPort User Guide...
  • Page 69 Connection Diagrams Results Figure 30 HTML Report for Eye Opening Calibration Keysight N5990A-155 DisplayPort User Guide...
  • Page 70 Connection Diagrams • Set Voltage: The set value of generator output voltage. • Measured Eye Opening (mV): Measured Eye Opening with the scope. Keysight N5990A-155 DisplayPort User Guide...

  • Page 71: Compliance Eye Height And Eye Width Verification

    This calibration is only available for HBR3 data rate, for TP2 and TP3; and for each Lane. It must be repeated for different ‘SJSWEEP’ frequencies: 500KHz, 1MHz, 2MHz, 10MHz, 20MHz and 100MHz. Keysight N5990A-155 DisplayPort User Guide...
  • Page 72 CTLE: Pole1-Frequency • CTLE: Pole2-Frequency • DFE Enabled • Jitter • ISI Amplitude • Fixed SJ Amplitude • Fixed SJ Frequency • Target Total Jitter • Pattern • Sequence File • Voltage • Target Eye Opening Keysight N5990A-155 DisplayPort User Guide...
  • Page 73 Common Mode Interference Calibration on page 51. • Fixed Sinusoidal Jitter Calibration on page 54. • Intersymbol Interference (ISI) Calibration on page 57. • Total Jitter Calibration on page 61. • Eye Opening Calibration on page 66. Keysight N5990A-155 DisplayPort User Guide...
  • Page 74 HTML Report for Compliance Eye Height and Eye Width Verification • Result: Pass, if the measured EH and EW are within the specifications. • Measured Eye Height: Amplitude of the measured eye height. • Measured Eye Width: Amplitude of the measured eye width. Keysight N5990A-155 DisplayPort User Guide...

  • Page 75: Aggressor Amplitude Calibration

    This calibration calibrates the differential output voltage of the aggressor signal. The test automation starts by applying a high differential voltage and decreases it in each step. The corresponding aggressor signal amplitude is measured on the scope. Keysight N5990A-155 DisplayPort User Guide...
  • Page 76 Measurement Cycles • Crosstalk • Aggressor Clock Divider • Pattern • Sequence File • Voltage • Target Aggressor Amplitude • First Differential Voltage • Applied Voltage Step The description for these parameters are listed in Table Keysight N5990A-155 DisplayPort User Guide...
  • Page 77 Connection Diagrams Results Figure 34 HTML Report for Aggressor Amplitude Calibration Keysight N5990A-155 DisplayPort User Guide...
  • Page 78 Connection Diagrams • Set Voltage: The output voltage set on the clock generator. • Measured Voltage (mV): Measured aggressor signal voltage with the scope. Keysight N5990A-155 DisplayPort User Guide...

  • Page 79: Receiver Tests

    Keysight N5990A-155 DisplayPort User Guide Receiver Tests DisplayPort Receiver Tests / 83...
  • Page 80 Sequence File property. Observation Time The time interval (in seconds) when the PRBS pattern is sent out. Allowed Number of Errors Maximum allowed number of errors in order to pass the test. Keysight N5990A-155 DisplayPort User Guide...
  • Page 81 Calibrated aggressor signal differential voltage used during the test. Start Differential Amplitude First amplitude value of the output generator. Differential Amplitude Step Differential voltage step size for the test. At every step, the output voltage is decreased by this value. Size Keysight N5990A-155 DisplayPort User Guide...
  • Page 82 Set to ‘True’ to use linear frequency steps or ‘False’ to use logarithmic steps. Steps Use Frequency Points Use frequency points instead of the list generated by the start and stop values. Frequency Points Frequency values to use if the previous option is selected. Keysight N5990A-155 DisplayPort User Guide...

  • Page 83: Displayport Receiver Tests

    HBR3) and the error counter is started. A count-down timer is displayed and, when it finishes, the test results are decided depending on the number of errors. Connection Diagram Figure 35 Connection Diagram for Receiver Tests Keysight N5990A-155 DisplayPort User Guide...
  • Page 84 The description for these parameters are listed in Table Dependencies • Random Jitter Calibration on page 43. • High Speed Sinusoidal Jitter Calibration on page 47. • Common Mode Interference Calibration on page 51. • Fixed Sinusoidal Jitter Calibration on page 54. Keysight N5990A-155 DisplayPort User Guide...
  • Page 85 Example HTML Viewer for Jitter Tolerance Test • Result (Pass / Fail): If the BER Test passes, the value is “Pass”, else “Fail”. • SJ Frequency: The frequency value of the SJ that is applied to the test signal. Keysight N5990A-155 DisplayPort User Guide...
  • Page 86 Number of Errors: The number of frame errors that occurred during the Observation Time. • Min. Spec Errors: The minimum number of errors to pass the BER. • Max. Spec Errors: The maximum number of errors to pass the BER. Keysight N5990A-155 DisplayPort User Guide...

  • Page 87: Jitter Tolerance Characterization Test

    (for example, if the DUT would tolerate higher jitter amplitudes than the generator could apply), the maximum possible (or applied) jitter is also reported. Connection Diagram Figure 37 Connection Diagram for Receiver Tests Keysight N5990A-155 DisplayPort User Guide...
  • Page 88 Swept SJ Amplitude Step Size/Precision • Minimum Swept SJ Amplitude • Maximum Swept SJ Amplitude • Use Binary Search • Swept SJ Frequency • Start Frequency • Stop Frequency • Number of Frequency Steps • Use Linear Frequency Steps Keysight N5990A-155 DisplayPort User Guide...
  • Page 89 Fixed Sinusoidal Jitter Calibration on page 54. • Intersymbol Interference (ISI) Calibration on page 57. • Total Jitter Calibration on page 61. • Eye Opening Calibration on page 66. • Aggressor Amplitude Calibration on page 75. Keysight N5990A-155 DisplayPort User Guide...
  • Page 90 Sink Calibration Procedures Results Figure 38 Example HTML Viewer for Jitter Tolerance Characterization Test Keysight N5990A-155 DisplayPort User Guide...
  • Page 91 Max. Applied SJ Jitter: Maximum jitter that was applied to the DUT during the test. • Generator Limit Reached: Determines whether the test for this frequency was stopped owing to the instrument limitation or to the device failing this amplitude. Keysight N5990A-155 DisplayPort User Guide...

  • Page 92: Data Rate Deviation Test

    Figure 39 Connection Diagram for Receiver Tests Parameters in Expert Mode The parameters used in expert mode for this calibration are: • Bit Error Rate Testing • Link Quality Pattern Hint • Allowed Number of Errors Keysight N5990A-155 DisplayPort User Guide...
  • Page 93 Tested Lane Eye Height • Aggressor Lane Voltage The description for these parameters are listed in Table Dependencies • High Speed Sinusoidal Jitter Calibration on page 47. • High Speed Sinusoidal Jitter Calibration on page 47. Keysight N5990A-155 DisplayPort User Guide...
  • Page 94 Example HTML Viewer for Data Rate Deviation Test • Result (Pass / Fail): The value ‘Pass’ indicates that the deviation is within the specification limits. • Test Point: Data Rate with positive or negative deviation. Keysight N5990A-155 DisplayPort User Guide...
  • Page 95 Sink Calibration Procedures • Max. Passed Datarate Deviation: Maximum Data Rate deviation allowed to pass the test. • Details: Detailed comments, if the test fails. Keysight N5990A-155 DisplayPort User Guide...

  • Page 96: Sensitivity Test

    This value is derived from the Eye Opening Calibration. Connection Diagram Figure 41 Connection Diagram for Receiver Tests Parameters in Expert Mode The parameters used in expert mode for this calibration are: • Bit Error Rate Testing Keysight N5990A-155 DisplayPort User Guide...
  • Page 97 High Speed Sinusoidal Jitter Calibration on page 47. • Common Mode Interference Calibration on page 51. • Fixed Sinusoidal Jitter Calibration on page 54. • Intersymbol Interference (ISI) Calibration on page 57. • Aggressor Amplitude Calibration on page 75. Keysight N5990A-155 DisplayPort User Guide...
  • Page 98 Example HTML Viewer for Sensitivity Test • Result (Pass / Fail): The value ‘Pass’ indicates that the test is successful. • Generator Output: The Applied Generator Output Voltage. • Eye Opening: The Eye Opening corresponding to the applied voltage. Keysight N5990A-155 DisplayPort User Guide...

  • Page 99: Variable Parameter Test

    Finally, when the “Finish Test” button is clicked, the results are saved in an Excel file. Figure 43 Variable Parameter Test window Connection Diagram Keysight N5990A-155 DisplayPort User Guide...
  • Page 100 Allowed Number of Errors • Observation Time • Crosstalk • Aggressor Clock Divider • Common Mode Interference • CMI Amplitude • CMI Frequency • Use CMI • DPCD • Extra DPCD • Extra DPCD Order Keysight N5990A-155 DisplayPort User Guide...
  • Page 101 High Speed Sinusoidal Jitter Calibration on page 47. • Common Mode Interference Calibration on page 51. • Fixed Sinusoidal Jitter Calibration on page 54. • Intersymbol Interference (ISI) Calibration on page 57. • Aggressor Amplitude Calibration on page 75. Keysight N5990A-155 DisplayPort User Guide...
  • Page 102 2nd Jitter Comp. Amplitude: The amplitude of the second SJ component. • 2nd Jitter Comp. Frequency: The frequency of the first SJ component. • SSC Frequency: The frequency of the SSC modulation. • SSC Amplitude: The amplitude of the SSC modulation. Keysight N5990A-155 DisplayPort User Guide...
  • Page 103 Sink Calibration Procedures • Observation Time: The observation time of the error counter ‘ErrorCounter’. • Limit: The limit of the error counter. • ErrorCounter: The number of errors found after the observation time has elapsed. Keysight N5990A-155 DisplayPort User Guide...
  • Page 104 Sink Calibration Procedures Keysight N5990A-155 DisplayPort User Guide...
  • Page 105 Keysight N5990A-155 Display Port User Guide...
  • Page 106 This information is subject to change without notice. © Keysight Technologies 2019 Edition 4.0, December 2019 www.keysight.com...

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