Keysight Technologies N4917BSCB 400G User Manual Download Page 1

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User Guide

Keysight N4917BSCB 400G

Optical Receiver Test Application

Summary of Contents for N4917BSCB 400G

Page 1: ...User Guide Keysight N4917BSCB 400G Optical Receiver Test Application...

Page 2: ...rements beyond those set forth in the EULA shall apply except to the extent that those terms rights or licenses are explicitly required from all providers of commercial computer software pursuant to t...

Page 3: ...ing the N4917BSCB 400G Optical Receiver Test Application Hardware and Software Requirements 14 PC Hardware Requirements 14 PC Software Requirements 14 PC Interfaces 15 Instrument Firmware Requirements...

Page 4: ...al 42 Automated Compliance and Performance Tests 47 4 Using the N4917BSCB Software Starting the N4917BSCB 400G Optical Receiver Test Application 50 Setup tab Setting up the N4917BSCB 400G Optical Rece...

Page 5: ...Configuring calibration specific settings 71 Starting the stressed receiver conformance test signal calibration 75 Calibration tasks 78 Testing the stressed DUT receiver compliance 82 Configuring rec...

Page 6: ...6 Keysight N4917BSCB 400G Optical Receiver Test Application User Guide Contents...

Page 7: ...G Optical Receiver Test Application At a Glance 8 System Description 11 Contacting Keysight Technologies 12 This chapter provides an introduction to the Keysight N4917BSCB 400G Optical Receiver Test A...

Page 8: ...ver tests and the optical interface with transmitter and receiver tests Figure 1 Overview of physical layer compliance tests for a typical 400GBASE FR8 transceiver In particular the purpose of the opt...

Page 9: ...nable Laser and Optical Attenuator operating together with the N4917BSCB software package Salient features of the N4917BSCB 400G Optical Receiver Test Application include Remote control of all the tes...

Page 10: ...itivity test based on the following standards Test Name Reference Standard 200GBASE FR4 LR4 and DR4 IEEE P802 3bs Clauses 121 122 400GBASE FR8 and LR8 IEEE P802 3bs Clauses 121 122 400GBASE DR4 IEEE P...

Page 11: ...er that modulates the optical signal from a fixed or tunable laser a digital sampling oscilloscope for calibration of the stressed eye up to two M8046A error detectors and up to two N107x optical elec...

Page 12: ...on User Guide 1 Introduction Contacting Keysight Technologies For more information on products applications or services associated with Keysight Technologies contact your local Keysight office The com...

Page 13: ...d Software Requirements 14 Supported Equipment 16 License Requirements 19 Installing the Software 27 As a prerequisite for installing the N4917BSCB 400G Optical Receiver Test Application you require t...

Page 14: ...ts Keysight IO Libraries Suite Software Ver 18 1 or later M8070B system software for M8000 series Ver 6 0 210 6 or later M8070ADVB Advanced Measurement Package for M8000 Series Ver 1 0 70 0 or later O...

Page 15: ...use the older licenses N1010A 9FP PAM N Analysis Software N1010A TFP TDECQ Transmitter and Dispersion Eye Closure for PAM4 PC Interfaces USB LAN GPIB optional Instrument Firmware Requirements M8040A...

Page 16: ...B M8070ADVB Advanced Measurement Package for M8000 Series of BERT Test Solutions To view the list of available licenses see Table 2 on page 21 M8045A G32 G64 0G3 0G4 0P3 0P6 801 High Performance BERT...

Page 17: ...ule straight SMF or 81577A Attenuator module angled SMF or N7761A external Attenuator 1 ch straight SMF or N7762A external Attenuator 2 ch straight SMF or N7764A external Attenuator 4 ch straight SMF...

Page 18: ...e optical two electrical channels or N1092D four optical channels or N1092E two optical two electrical channels options LOJ PLK IRC 200 201 300 500 Clock Recovery N1078A Optical Electrical Clock Recov...

Page 19: ...N4917BSCB 1TP 1TP Optical Receiver Stress Test compliance app single mode 200G and 400G IEEE transportable perpetual license N4917BSCB 1NP 1NP Optical Receiver Stress Test compliance app single mode 2...

Page 20: ...IEEE network floating 36 month license N4917BSCB 1UY 1UY Optical Receiver Stress Test compliance app single mode 200G and 400G IEEE USB portable 36 month license N4917BSCB 1FF 1FF Optical Receiver St...

Page 21: ...FX Advanced Measurement Package for M8000 Series BERT Test Solutions node locked 24 month license M8070ADVB 1TX Advanced Measurement Package for M8000 Series BERT Test Solutions transportable 24 month...

Page 22: ...or new capabilities Transport licenses from one controller to another Borrow the licenses Remove licenses for capabilities no longer needed For detailed information on Keysight License Manager refer t...

Page 23: ...ysight software is installed Although the Keysight License Manager 6 is installed on your system when you install the N4917BSCB software however you can download it from Keysight License Manager 6 Key...

Page 24: ...times as needed to install all your licenses 5 If you want the license server process to start automatically each time the server machine is restarted make sure that Automatically start license serve...

Page 25: ...nsingUsbDriver Extract the zip file to this machine The dongle is connected to a USB port on this machine To license a Keysight product for use on this machine select the product from the drop down me...

Page 26: ...appears on the main license view For more information you can also refer the Keysight Licensing Administrator s Guide https literature cdn keysight com litweb pdf 5951 5739 pdf Transporting a License...

Page 27: ...e Download the installer file from https www keysight com main techSupport jspx nid 31929 1252867 To install the N4917BSCB 400G Optical Receiver Test Application perform the following steps 1 Double c...

Page 28: ...Guide 2 Installing the N4917BSCB 400G Optical Receiver Test Application 3 Click Next The Keysight Software End User License Agreement window is displayed 4 Select Agree to agree to the license agreeme...

Page 29: ...lication User Guide 29 Installing the N4917BSCB 400G Optical Receiver Test Application 2 5 Click Install Figure 5 Ready to install window 6 Once the installation of the N4917BSCB 400G Optical Receiver...

Page 30: ...on User Guide 2 Installing the N4917BSCB 400G Optical Receiver Test Application 7 Once the installation is complete the following window is displayed Click Finish to complete the installation and exit...

Page 31: ...Software Software Concept and Flow of Optical Receiver Test 32 Typical Setup for Optical Stress Test 34 Automated Calibration 42 Automated Compliance and Performance Tests 47 This chapter provides an...

Page 32: ...eric framework that already supports a wide range of automated compliance test applications for electrical transmission standards such as OIF CEI XAUI CAUI and many others The workflow of a generic co...

Page 33: ...bration functions to perform a full 200GBASE 400GBASE 100GBASE and 50GBASE optical receiver compliance test in accordance with IEEE 802 3bs and 802 3cd specifications For the list of supported standar...

Page 34: ...50GBASE FR and 50GBASE LR are similar with the exception that the tunable laser is not required the internal laser source of transmitter can be used Figure 10 illustrates the setup for 400GBASE DR4 a...

Page 35: ...ceiver Test Application User Guide 35 Concepts and Features of N4917BSCB Software 3 Figure 8 Setup for stressed eye signal calibration for 200GBASE FR4 LR4 DR4 400 GBASE FR8 LR8 with clean clock Simil...

Page 36: ...ceiver Test Application User Guide 3 Concepts and Features of N4917BSCB Software Figure 9 Setup for stressed eye signal calibration for 200 GBASE FR4 LR4 DR4 400 GBASE FR8 LR8 with recovered clock Sim...

Page 37: ...ptical Receiver Test Application User Guide 37 Concepts and Features of N4917BSCB Software 3 Figure 10 Setup for stressed eye signal calibration for 400GBASE DR4 and 400G FR4 Similar setup for 100GBAS...

Page 38: ...eysight N4917BSCB 400G Optical Receiver Test Application User Guide 3 Concepts and Features of N4917BSCB Software Figure 11 Setup for stressed eye signal calibration for 50G SR 100G SR2 200G SR4 400G...

Page 39: ...and Features of N4917BSCB Software 3 An example setup for 200GBASE LR4 FR4 using four 50 Gb s lanes on four wavelengths in the O band is shown in Figure 12 which assumes the use of a 200 GAUI 8 electr...

Page 40: ...nfiguring and starting the SCPI server in FlexDCA giving VISA connection to corresponding FlexDCA session alias name N1076A_PROXY and starting the M8070B A and observing the new connection to the DCA...

Page 41: ...Receiver Test Application User Guide 41 Concepts and Features of N4917BSCB Software 3 NOTE To understand the further connection setups supporting higher data rates refer to the Keysight M8070B Advance...

Page 42: ...sing several instruments such as a bit error ratio tester digital sampling oscilloscope optical reference transmitter and tunable laser source The purpose of the test is to generate a stable and repea...

Page 43: ...nts Bandwidth of at least half the signal baud rate Frequency response of low pass filter and E O converter should result at least half of dB value of SECQ before SI and GN are added Stress Signal Tar...

Page 44: ...stressed receiver conformance test signal as defined in the IEEE standard allows certain degrees of freedom to meet the specified target metrics SECQ ER and OMAouter For example the frequencies of si...

Page 45: ...efficent Ceq was already introduced in IEEE 802 3bs 121 8 5 3 and describes the noise enhancement factor for the reference TDECQ filter According to the new cd standard the Ceq coefficient must be at...

Page 46: ...the receiver sensitivity not stressed is not defined by a single OMA value but dependent on the transmitter SECQ used to measure the receiver sensitivity New multimode standards The PAM4 multimode sta...

Page 47: ...12 Different approaches to recover the BER are supported The BER can be retrieved from the transceiver internal error counter if any In this case the communication between the device under test and th...

Page 48: ...Features of N4917BSCB Software Table 4 Stressed receiver compliance target metric Transmission Standard Signal Parameter Value 200GBASE FR4 LR4 and DR4 400GBASE FR8 LR8 and DR4 400G FR4 100G FR and LR...

Page 49: ...ion and test specific settings 62 Connect tab Display hardware connection diagrams and test specific information 64 Run tab Run selected tests or measurements 64 Automate tab Run automated scripts 64...

Page 50: ...al calibration M8195A M8196A AWG soft front panel software used to control the sinusoidal interferer and Gaussian noise signal generator Keysight M8070B A software to connect to M8040A High performanc...

Page 51: ...ight N4917BSCB Launch Keysight N4917BSCB On Windows 10 Operating System select Keysight M8070A Applications Launch Keysight N4917BSCB Figure 14 Launching the N4917BSCB Rx Test Application on Windows 1...

Page 52: ...hes after automatically getting connected to the M8070B A software If the N4917BSCB 400G Optical Receiver Test Application does not detect any instance of the M8070B A software running locally the Con...

Page 53: ...ction Expert software for each online instrument is displayed After you verify the VISA SICL address select the correct VISA Address from the list 3 Click Get on the Connect to M8070 window The IDN fi...

Page 54: ...ceiver Stress Test Application NOTE The Message tab will show info warning and error messages while running the N4917BSCB application as well as intermediate results of measurements Scroll up and down...

Page 55: ...lication User Guide 55 Using the N4917BSCB Software 4 For more information on how to use the various features in the N4917BSCB 400G Optical Receiver Test Application refer to the Keysight N4917BSCB 40...

Page 56: ...Standard area i Select one out of these options 200GBASE IEEE 802 3bs 400GBASE IEEE 802 3bs 400G FR4 100G Lambda MSA Group 100G FR LR 100G Lambda MSA Group 100GBASE DR IEEE P802 3cd 50G 100G 200G 400...

Page 57: ...or 100G FR and 100G LR sublayer types that are based on 100GBASE DR standard 2 In the Instrument Setup area specify the VISA SICL address for the following instruments BERT Pattern Generator Error Det...

Page 58: ...E The Tunable Laser Source can be ignored if the internal laser source of the reference transmitter is used In this case the exact emission wavelength must be specified in the Transmitter Wavelength c...

Page 59: ...iate values in the Device Identifier Device User Description and Comments text fields respectively such that they appear in the HTML Report that is generated after test runs Performing this step is op...

Page 60: ...e performed The Select Tests tab is the main area in the N4917BSCB where tests can be selected to be performed during the next Run command Each test is part of a test group which can be expanded or co...

Page 61: ...rmed before other tests e g optimization of BERT deemphasis please run this test separately with all other tests deactivated In the current release the Optimize BERT deemphasis test can be configured...

Page 62: ...me groups as the test structure and can likewise be expanded or collapsed by clicking on the small preceding arrow The groups of configuration variables are further divided into logical subgroups For...

Page 63: ...ion User Guide 63 Using the N4917BSCB Software 4 Figure 21 Configure tab The current value of a variable is show in parentheses behind the variable name To change a value select an existing value from...

Page 64: ...e compliance with the standards Run tab Run selected tests or measurements The Run tab defines various settings to run tests and starts the selected tests or the automation script created in the Autom...

Page 65: ...iver Test Application User Guide 65 Using the N4917BSCB Software 4 NOTE The functionality of the Upload Results to Repository feature is not fully supported in the current version of the N4917BSCB 400...

Page 66: ...Help menu for various user assistance documents For technical support contact Keysight Technical Support Help Technical Support Contact Technical Support or your Keysight representative When reportin...

Page 67: ...Up and Preparing the Compliance Test Setup 68 Calibrating the stressed receiver conformance test signal 70 Testing the stressed DUT receiver compliance 82 Utility Functions 97 This section describes...

Page 68: ...ceiver compliance test you need to set up the required instruments and make the physical connections shown in Figure 22 To ensure stable operation observe the specified warm up times of the instrument...

Page 69: ...Refresh limit set and sets the respective configuration variables in the Configure tab All global test settings such as the signal baud rate transmission wavelength or the BERT deemphasis tap values a...

Page 70: ...issing instrument connections Optimizing the BERT deemphasis Running the automated conformance test signal calibration requires an optimized BERT output that compensates the non ideal frequency respon...

Page 71: ...ion variables such as the calibration data pattern and the calibration target metrics can be found in the Stressed Receiver Signal Calibration settings Figure 26 shows the exemplary calibration settin...

Page 72: ...s component settings sinusoidal jitter and sinusoidal interferer frequency to be used for the calibration Figure 26 Exemplary stressed receiver signal calibration configuration variables for 200GBASE...

Page 73: ...Calibrations to clear and recalibrate the DCA module Ensure that the optical sampling scope DCA gets recalibrated on a regular basis NOTE Due to the limited output voltage range 75mV to 1V of the use...

Page 74: ...74 Keysight N4917BSCB 400G Optical Receiver Test Application User Guide 5 Performing Stressed Receiver Compliance Tests with N4917BSCB Software Figure 28 Stress signal calibration procedure...

Page 75: ...ts NOTE The automated stress signal calibration will reset and reconfigure all used hardware instruments at the beginning of each calibration run Hence any manual settings will be lost So make sure to...

Page 76: ...attern Debug Mode SSPRQ Optimize deemphasis on calibration start TRUE BERT Deemphasis 0 0 0 0 1 0 0 0 DCA Use SIRC Filter Debug Mode TRUE SIRC 3dB Filter Bandwidth 13 28126 GHz 26 5626 GHz for 400GBAS...

Page 77: ...e Stressed Eye Signal SJ Periodic Jitter Frequency 119 2 MHz Periodic Jitter Amplitude 0 05 UI SI Sinusoidal Interferer Frequency 1 9431 GHz GN Sinusoidal Interferer to Gaussian Noise Ratio 10 dB Ceq...

Page 78: ...Overview This calibration automatically adjusts the stress parameters ER SECQ OMA for a 200G 400G 100G or 50G stressed eye signal Connection Diagram Connect the instruments as shown in Setting Up and...

Page 79: ...hasis on calibration start Perform Dark Level Configuration Optimize PAM4 Linearity Initial SECQ Optimization Use TDECQ Filter Optimization Feature Calibration Iteration Limit Skip receive power OOMA...

Page 80: ...Procedure Refer to Automated Calibration on page 42 Results Pass Fail Recall stressed eye signal from last calibration settings Overview This task recalls and applies the latest stressed eye calibrati...

Page 81: ...400G Optical Receiver Test Application User Guide 81 Performing Stressed Receiver Compliance Tests with N4917BSCB Software 5 Configuration Parameters Procedure Refer to Automated Calibration on page 4...

Page 82: ...er test whereas the stress test signal can be either recalled from a previous calibration setting file default or is assumed to be already running from a previous test Configuring receiver tests setti...

Page 83: ...sation of optical loss in receiver test path To ensure compliant receiver testing the automated test procedure must compensate for any additional loss in the receiver test path see Figure 31 for a sch...

Page 84: ...ional System Loss configuration variable default is 0dB Figure 31 Stressed receiver optical path loss definitions The flowcharts on the following pages depict the receiver test procedures available in...

Page 85: ...Keysight N4917BSCB 400G Optical Receiver Test Application User Guide 85 Performing Stressed Receiver Compliance Tests with N4917BSCB Software 5 Figure 32 Receiver conformance test procedure...

Page 86: ...86 Keysight N4917BSCB 400G Optical Receiver Test Application User Guide 5 Performing Stressed Receiver Compliance Tests with N4917BSCB Software Figure 33 Receiver jitter tolerance tests procedure...

Page 87: ...eysight N4917BSCB 400G Optical Receiver Test Application User Guide 87 Performing Stressed Receiver Compliance Tests with N4917BSCB Software 5 Figure 34 Receiver sensitivity measurement test procedure...

Page 88: ...Setup on page 68 ID Configuration Parameters You may modify the following parameters for this test Recall Calibration Settings Pause before starting RX tests Run ED Auto Alignment before starting RX t...

Page 89: ...etector Timeout Error Detector 1 Clock Source CLK IN Clock Data Recovery Module ED 1 Error Detector 2 Clock Source CLK IN Clock Data Recovery Module ED 2 Clock Data Recovery Source Clock Data Recovery...

Page 90: ...ts as shown in Setting Up and Preparing the Compliance Test Setup on page 68 ID Configuration Parameters You may modify the following parameters for this test Recall Calibration Settings Pause before...

Page 91: ...or Detector Polarity Error Detector Timeout Error Detector 1 Clock Source CLK IN Clock Data Recovery Module ED 1 Error Detector 2 Clock Source CLK IN Clock Data Recovery Module ED 2 Clock Data Recover...

Page 92: ...ty Connection Diagram Connect the instruments as shown in Setting Up and Preparing the Compliance Test Setup on page 68 ID Configuration Parameters You may modify the following parameters for this tes...

Page 93: ...ck Error Detector Compare Mode Error Detector Polarity Error Detector Timeout Error Detector 1 Clock Source CLK IN Clock Data Recovery Module ED 1 Error Detector 2 Clock Source CLK IN Clock Data Recov...

Page 94: ...e receiver jitter performance Connection Diagram Connect the instruments as shown in Setting Up and Preparing the Compliance Test Setup on page 68 ID Configuration Parameters You may modify the follow...

Page 95: ...e Error Detector Follow SYS Clock Error Detector Compare Mode Error Detector Polarity Error Detector Timeout Error Detector 1 Clock Source CLK IN Clock Data Recovery Module ED 1 Error Detector 2 Clock...

Page 96: ...orming Stressed Receiver Compliance Tests with N4917BSCB Software RX Sensitivity Measurement RX Sensitivity Test Power Start RX Sensitivity Test Power Stop RX Sensitivity Test Power Step Procedure Ref...

Page 97: ...efTX Recalibration Auxiliary Instrument VISA Address Auxiliary Instrument SCPI Command Results Pass Fail Optimize BERT deemphasis Overview This test performs a BERT deemphasis optimization Connection...

Page 98: ...ion Auxiliary Instrument VISA Address Auxiliary Instrument SCPI Command Results Pass Fail Readjust reference transmitter power Overview This step readjusts the previously calibrated output power of th...

Page 99: ...meters Optimize crossing after RefTX recalibration Auxiliary Instrument VISA Address Auxiliary Instrument SCPI Command Results Pass Fail Set laser wavelength Overview This step sets the laser waveleng...

Page 100: ...n page 68 ID Configuration Parameters Pattern Generator Line Coding Pattern Generator Data Pattern Results Pass Fail Set ED detection format Overview This step sets the line coding and analysis data p...

Page 101: ...tput channel 2 using the settings according to the configuration variable Aggressor Channel Source Connection Diagram Connect the instruments as shown in Setting Up and Preparing the Compliance Test S...

Page 102: ...102 Keysight N4917BSCB 400G Optical Receiver Test Application User Guide 5 Performing Stressed Receiver Compliance Tests with N4917BSCB Software...

Page 103: ...Keysight N4917BSCB Optical Receiver Stress Test User Guide 103...

Page 104: ...This information is subject to change without notice Keysight Technologies 2017 2019 Edition 4 0 June 2019 www keysight com...

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