Benutzerhandbuch für Tektronix 1502C

Inhaltsverzeichnis

• Title Page

  1
• WARRANTY

  3
• Contacting Tektronix

  4
• Table of Contents

  5
• List of Figures

  7
• List of Tables

  10
• General Information

  11
  • Product Description

    11
  • Battery Pack

    11
  • Options

    11
  • Standards, Documents, and References Used

    11
  • Changes and History Information

    11
  • Installation and Repacking

    12
    • Unpacking and Initial Inspection

      12
    • Power Source and Power Requirements

      12
    • Repacking for Shipment

      12
• General Safety Summary

  15
  • Safety Terms and Symbols

    15
  • Power Source

    16
  • Grounding the Product

    16
  • Danger Arising from Loss of Ground

    16
  • Use the Proper Power Cord

    16
  • Use the Proper Fuse

    16
  • Do Not Operate in Explosive Atmosphere

    16
  • Do Not Remove Covers or Panels

    16
  • Connecting Cables to the Front- Panel BNC

    16
  • Disposal of Batteries

    16
• Operating Instructions

  19
  • Overview

    19
    • Handling

      19
    • Powering the 1502C

      19
    • Care of the Battery Pack

      20
    • Battery Charging

      21
    • Low Battery

      21
    • Low Temperature Operation

      22
  • Preparing to Use the 1502C

    23
  • Display

    24
  • Front-Panel Controls

    25
  • Menu Selections

    26
    • Main Menu

      26
  • Test Preparations

    30
    • The Importance of Vp (Velocity of Propagation)

      30
    • Finding an Unknown Vp

      30
  • Cable Test Procedure

    32
    • Distance to the Fault

      32
    • Reflection Coefficient Measurements

      35
    • Return Loss Measurements

      36
    • Ohms-at-Cursor

      37
    • Using VIEW INPUT

      38
    • How to Store the Waveform

      38
    • Using VIEW STORE

      39
    • Using VIEW DIFF

      39
    • Using Horizontal Set Reference

      42
    • Using Vertical Set Reference

      44
    • Vertical Compensation for Higher Impedance Cable

      44
  • Additional Features (Menu Selected)

    47
    • Max Hold

      47
    • Pulse On/Off

      48
    • Single Sweep

      49
• Operator Tutorial

  51
  • What is the Tektronix 1502C?

    51
  • How Does It Do It?

    51
  • You, the Operator

    51
  • Menus and Help

    51
  • Getting Started

    52
  • The Waveform Up Close

    55
  • A Longer Cable

    57
  • Ohms-at-Cursor

    58
  • Noise

    61
  • Set Ref (Delta Mode)

    63
    • HORZ SET REF

      63
    • VERT SET REF

      65
  • VIEW INPUT

    67
  • STORE and VIEW STORE

    68
  • VIEW DIFF

    70
  • Menu-Accessed Functions

    71
    • Max Hold

      71
    • Pulse On / Off

      73
    • Single Sweep

      74
  • TDR Questions and Answers

    76
• Options and Accessories

  79
  • Option 04: YT-1 Chart Recorder

    79
  • Option 05: Metric Default

    79
  • Option 07: YT-1S Chart Recorder

    79
  • Power Cord Options

    79
  • Test Data Record Option

    80
  • Option DE

    80
  • Accessories

    80
    • Standard Accessories

      80
    • Optional Accessories

      80
• Appendix A: Specifications

  83
  • Electrical Characteristics

    83
  • Environmental Characteristics

    85
  • Certifications and Compliances

    86
  • Physical Characteristics

    87
• Appendix B: Operator Performance Checks

  89
  • Equipment Required

    89
  • Getting Ready

    89
  • Power On

    89
  • Metric Instruments

    89
  • Set Up

    90
  • Horizontal Scale (Timebase) Check

    90
  • Vertical Position (Offset) Check

    93
  • Noise Check

    94
  • Offset/Gain Check

    95
  • Sampling Efficiency Check

    95
  • Aberrations Check

    96
  • Risetime Check

    97
  • Jitter Check

    99
  • Conclusions

    100
• Appendix C: Operator Troubleshooting

  101
  • Error Messages

    103
    • Message: Option Port Device Not Responding... Please check for correct installation.

      103
    • Message: ERROR: Acquisition Initialization TYPE: Pulse gap > 3.75 dB

      103
    • Message: ERROR: Acquisition Initialization TYPE: Initial Pulse Height > 2 Divs at 0 dB

      104
    • Message: ERROR: Acquisition Initialization TYPE: Vertical Scale failure

      104
    • Message: ERROR: Acquisition Initialization TYPE: Vertical Position failure Pulse base off top of LCD

      105
    • Message: ERROR: Acquisition Initialization TYPE: Leading edge of pulse not found

      105
• Appendix D: Application Note

  107
  • Pulse Echo Testing of Electrical Transmission Lines

    107
  • Terms and Symbols

    107
  • Relationships

    108
  • VSWR vs. Percent Reflected Voltage

    108
  • Return Loss (dB) vs. Percent Reflected Voltage

    109
  • Percent Reflected Voltage vs. Characteristic Line Impedance 50 or 75 ohm Source

    110
  • Percent Reflected Voltage vs. Load Resistance

    112
  • Characteristic Line Impedance or Load Resistance vs. Reflection Amplitude (as seen on your TDR)

    112
  • Centimeters vs. Inches or Meters vs. Feet

    113
  • Dielectric Constant vs. Velocity Factor

    114
  • Time vs. Short Distances, in Centimeters or Inches (any dielectric)

    114
  • Time vs. Long Distances, in Meters or Feet (any dielectric)

    115
• Glossary

  117
• Index

  123