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SMSC MOST50 User Manual

E-o converter
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User's Manual
MOST50 E-O Converter
E-O Converter User's Manual
Copyright © 2009 SMSC.
DB0820UM1A
Jan 2009
Page 1

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  • Page 1 User’s Manual MOST50 E-O Converter E-O Converter User’s Manual Copyright © 2009 SMSC. DB0820UM1A Jan 2009 Page 1...

  • Page 2: Technical Support

    Any and all such uses without prior written approval of an officer of SMSC will be fully at your own risk.
  • Page 3 MOST50 E-O Converter Conventions Within this manual, the following abbreviations and symbols are used to improve readability. Example Description Name of a single bit within a field FIELD.BIT Name of a single bit (BIT) in FIELD x…y Range from x to y, inclusive...

  • Page 4: Table Of Contents

    MOST50 E-O Converter TABLE OF CONTENTS 1 PREFACE ........................5 1.1 Intended Use ............................5 1.2 Deliverables ............................5 2 INTRODUCTION ......................6 3 SYSTEM EXAMPLE ....................8 4 BOARD DETAILS ..................... 10 4.1 Battery Operation ...........................11 4.2 Physical Layer Conversion ......................12 4.3 Status LEDs ...........................

  • Page 5: Preface

    This user’s manual should be read in its entirety prior to operating the MOST50 E-O Converter, with spe- cial consideration given to Initial Charge Instructions (Appendix C). Any reference to E-O Converter in this document implies MOST50 E-O Converter.

  • Page 6: Introduction

    In order to validate electomagnetic compatibility (EMC) and operational electrostatic discharge (ESD) tests, it is necessary to isolate the device under test (DUT) from other nodes within the MOST50 ePHY network (see Figure 2-1). Isolation involves eliminating the influence of the other nodes as well as external environmental factors from the DUT.
  • Page 7 Figure 2-2: MOST50 Network Implementation with DUT Isolation The major features of the MOST50 E-O Converter include: Conversion between MOST50 ePHY network signals and optical physical layer network signals Minimal influence on MOST50 ePHY network messages Protection of stimulus equipment from harsh test environments...

  • Page 8: System Example

    DUT in this sample system. The test environment in this example is represented by the anechoic chamber. The OptoLyzer G2 3050e serves as the MOST50 network master and is used to moni- tor and inject network traffic through either OptoLyzer transceiver or MOST RapidControl.
  • Page 9 MOST50 E-O Converter Stimulus Equipment Power O p t o L y z e r O L 3 0 5 0 e Line MOST50 Trigger ePHY Front Panel Back Panel ePHY Optical MOST50 Error ePHY 12 - 16 V 2.5 A Can be powered by DC supply.

  • Page 10: Board Details

    4 Board Details An overview of the MOST50 E-O Converter PCB is shown in Figure 4-1. The E-O Converter provides a single power jack for supplying power (12 V, 2.5 A typical) to the entire E-O Converter. This jack supports a power plug such as Binder 99-3400-100-03 (or equivalent).

  • Page 11: Battery Operation

    A full battery charge typi- cally provides 10 hours of power for MOST50 E-O Converter operation. After approximately eight hours, the low battery indicator LED (yellow) turns on. This indicates that there are less than two hours of P o w e r battery life remaining and that the battery should be recharged.

  • Page 12: Physical Layer Conversion

    MOST50 E-O Converter 4.2 Physical Layer Conversion The primary function of the MOST50 E-O Converter is network signal conversion between electrical and optical physical layers. The E-O Converter incorporates two OS81082 Intelligent Network Interface Controllers (INICs) to achieve this conversion. The network frame rate of both ePHY and optical physical layer net- works is 48 kHz.

  • Page 13: Status Leds

    MOST50 E-O Converter 4.3 Status LEDs The E-O Converter provides four status LEDs: , and . In addition, the P o w e r C h a r g e O p t i c a l E r r o r...

  • Page 14: Test Configurations

    MOST50 E-O Converter 5 Test Configurations The MOST50 E-O Converter can be used in a variety of tests. This chapter provides four test configuration examples, each using a pair of E-O Converters to electrically isolate the device under test from the other network components.
  • Page 15 Insert Picture Master Slave 1. DUT 9. Stimulus Equipment (Including E-O Converter) 2. ePHY Cable 3. MOST50 E-O Converter 10. 12 V Battery 4. Glass Optical Fiber (SC Duplex) 11. Feedthru 5. Ground Plane 12. Antenna 6. Insulating Support 13. LISN 7.

  • Page 16: Bulk Current Injection

    MOST50 E-O Converter 5.2 Bulk Current Injection Figure 5-2 shows a sample ISO 11452-4:2001 test configuration for BCI testing. For immunity tests, the E-O Converter inside the anechoic chamber is isolated from the ground plane by floating it on an insulating support.
  • Page 17 MOST50 E-O Converter Master Slave 1. DUT 10. 12 V Battery 2. ePHY Cable 11. Feedthru 3. MOST50 E-O Converter 12. Current Injection Probe 4. Glass Optical Fiber (SC Duplex) 13. Current Monitoring Probe 5. Ground Plane 14. LISN 6. Insulating Support...

  • Page 18: Transverse Electromagnetic Cell

    MOST50 E-O Converter 5.3 Transverse Electromagnetic Cell Figure 5-3 shows the top and side views for a sample test configuration of an ISO 11452-3:2001(E) style TEM cell test. The glass optical fiber isolates and protects the stimulus equipment from the electrical dis- turbances produced during testing.
  • Page 19 Floor Master Slave 1. DUT 9. Stimulus Equipment (Including E-O Converter) 2. ePHY Cable 3. MOST50 E-O Converter 10. 12 V Battery 4. Glass Optical Fiber (SC Duplex) 11. Feedthru 5. Field Probe 12. Plastic Optical Fiber 6. Insulating Support...
  • Page 20 MOST50 E-O Converter Figure 5-4: Typical E-O Converter TEM Cell Setup E-O Converter User’s Manual Copyright © 2009 SMSC. DB0820UM1A Page 20...

  • Page 21: Electrostatic Discharge

    DUT. Master Slave 1. DUT 9. Stimulus Equipment (Including E-O Converter) 2. ePHY Cable 3. MOST50 E-O Converter 10.12 V Battery 4. Glass Optical Fiber (SC Duplex) 11. ESD Simulator 5. Ground Plane 12. ESD Gun 6. Insulating Support 13.

  • Page 22: Appendix A: Specifications

    MOST50 E-O Converter Appendix A: Specifications Description Units Conditions MOST50 E-O Converter: Input Voltage V (DC) = 12 V (DC) Input Current A (DC) ° C Operating Temperature Fast Charge Cycle: Input Current A (DC) power switch off Charge Time min.

  • Page 23: Appendix B: Troubleshooting

    MOST50 E-O Converter Appendix B: Troubleshooting Problem Solution - Plug in the DC power supply and check if the E-O Converter powers up. - If it now works, the LED (green) will turn on. Also, the P o w e r C h a r g e (blue) will turn on or flash.

  • Page 24: Appendix C: Initial Charge Instructions

    MOST50 E-O Converter Appendix C: Initial Charge Instructions Before using the MOST50 E-O Converter, a full charge cycle must be completed as follows: 1. Turn the power switch. O F F 2. Connect the 12 V power supply to the power jack. The...
  • Page 25 MOST50 E-O Converter NOTES: E-O Converter User’s Manual Copyright © 2009 SMSC. DB0820UM1A Page 25...
  • Page 26 MOST50 E-O Converter...

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