Document Outline

• Revision and Copyright Information
• Warranty
• Assistance
• Table of Contents
• 1. Introduction
• 2. Cautionary Statements
• 3. Initial Inspection
• 4. Overview
  • 4.1 Channel Allocations
  • 4.2 Measurement Rates
  • 4.3 Integrated Thermistor Measurement
  • 4.4 Laboratory Mode
  • 4.5 Field Mode
  • 4.6 Data Uses
    • 4.6.1 Static Measurements
    • 4.6.2 Dynamic Measurements
    • 4.6.3 Thermistor Measurements
    • 4.6.4 Rainflow Histograms
    • 4.6.5 System Diagnostics
• 5. Specifications
  • 5.1 Features
  • 5.2 Specifications
• 6. Installation
  • 6.1 Laboratory-Mode Installation
    • 6.1.1 Laboratory-Mode Installation Equipment
    • 6.1.2 Laboratory-Mode Installation Procedure
  • 6.2 Field-Mode Installation
    • 6.2.1 Field-Mode Installation Equipment
    • 6.2.2 Field-Mode Installation Procedure
• 7. System Operation
  • 7.1 PC Based Tools
    • 7.1.1 Software and Driver Installation
    • 7.1.2 Using DVWTool
      • 7.1.2.1 Ensure Connection is Active
      • 7.1.2.2 DVWTool Settings Editor
      • 7.1.2.3 Button and Field Descriptions
    • 7.1.3 Using DevConfig
      • 7.1.3.1 Ensure Connection is Active
      • 7.1.3.2 DevConfig Settings Editor
  • 7.2 Using the Datalogger
  • 7.3 Using the SC-CPI Interface
  • 7.4 Using Power Supplies
    • 7.4.1 CDM-VW300 Series Analyzer Power
    • 7.4.2 Data-Acquisition System Power
  • 7.5 Configuring the CDM-VW300 Analyzer
    • 7.5.1 Device Name
    • 7.5.2 CPI Bus Speed
    • 7.5.3 Operating System Version
    • 7.5.4 Operating System Date
    • 7.5.5 Analyzer Serial Number
    • 7.5.6 Display Rate
    • 7.5.7 Dynamic Sample Rate
    • 7.5.8 Device Type
    • 7.5.9 CPI Bus Address
    • 7.5.10 System Options
    • 7.5.11 Channels Enabled
    • 7.5.12 Desired Resonant Amplitude
    • 7.5.13 Minimum- and Maximum Cut-Off Frequencies
    • 7.5.14 Frequency-Output Format
    • 7.5.15 Multipliers and Offsets
    • 7.5.16 Steinhart-Hart Coefficients
    • 7.5.17 Rainflow-Histogram Output Configurations
  • 7.6 Sensor Selection
    • 7.6.1 Frequency Considerations
    • 7.6.2 Noise Performance
  • 7.7 System Connections
    • 7.7.1 CDM-VW300 to PC Connection
    • 7.7.2 CDM-VW300 to Sensor Connection
    • 7.7.3 CDM-VW300 to SC-CPI Connection
    • 7.7.4 CDM-VW300 to Power Connection
    • 7.7.5 Earth Ground Connections
    • 7.7.6 Communication Connections
      • 7.7.6.1 SC-CPI to CPI Bus Connection
      • 7.7.6.2 Datalogger to SC-CPI Connection
    • 7.7.7 Maximum Number of Analyzers on a Datalogger
  • 7.8 Operating System
  • 7.9 Power-Up Sequence
  • 7.10 CRBasic Programming
    • 7.10.1 Writing Programs
    • 7.10.2 Sending Programs to the Datalogger
  • 7.11 System Adjustments
    • 7.11.1 Frequency Range
  • 7.12 System Validation
    • 7.12.1 Sensor Validation
    • 7.12.2 Monitoring System Performance
      • 7.12.2.1 Monitoring with DVWTool Software
        • 7.12.2.1.1 Fault Detection
• 8. Troubleshooting
  • 8.1 Connections
  • 8.2 Power
  • 8.3 Isolating Components
  • 8.4 Filtering Harmonics
  • 8.5 Diagnostic Outputs
    • 8.5.1 Diagnostic Codes (Dynamic)
      • 8.5.1.1 Description of Diagnostic Parameters
      • 8.5.1.2 Calculating Low- and High-Frequency Boundaries
      • 8.5.1.3 Using Diagnostic Parameters
      • 8.5.1.4 Decoding the Diagnostic Code
        • 8.5.1.4.1 Excitation Strength
        • 8.5.1.4.2 Low-Amplitude Warning Flag
        • 8.5.1.4.3 High-Amplitude Warning Flag
        • 8.5.1.4.4 Low-Frequency Warning Flag
        • 8.5.1.4.5 High-Frequency Warning Flag
        • 8.5.1.4.6 Interpreting the Diagnostic Code
    • 8.5.2 Standard Deviation of Dynamic Output
  • 8.6 Factory Default Reset
• 9. Glossary
• 10. References and Attributions
• Appendix A. Measurement Theory
  • A.1 Dynamic Vibrating-Wire Measurements
    • A.1.1 Dynamic and Static Frequencies
• Appendix B. SC-CPI Datalogger to CPI Interface
  • B.1 Introduction
  • B.2 Quickstart
  • B.3 Overview
  • B.4 Specifications
• Appendix C. CDM Devices and CPI Bus
  • C.1 CDM Interconnection and Datalogger Connection
    • C.1.1 Power
    • C.1.2 Interconnect Cable
    • C.1.3 Speed as a Function of Distance
    • C.1.4 CPI Grounding
    • C.1.6 Addressing
  • C.2 Distributed Architecture
• Appendix D. Digits Conversion
  • D.1 Example: Frequency to Digits to Displacement
• Appendix E. Calculating Measurement Error
  • E.1 Example Error Calculation: Geokon Strain Gage
  • E.2 Example Error Calculation: DGSI Embedment Strain Gage
  • E.3 Example Error Calculation: DGSI Spot-Welded Strain Gage
  • E.4 Example Error Calculation: Geokon 4420 Crack Meter
  • E.5 Example Error Calculation: DGSI Piezometer 52611099
• Appendix F. Thermistor Information
  • F.1 Converting Resistance to Temperature
    • F.1.1 Resistance Conversion Example – Geokon Sensor
  • F.2 Accuracy and Resolution
• Appendix G. CRBasic Program Library
  • G.1 Dynamic Measurements
    • G.1.1 20 Hz Measurement Example — One CDM-VW300, Two Channels
    • G.1.2 20 Hz Measurement Example — One CDM-VW305, Eight Channels
    • G.1.3 20 Hz Measurement Example — Three CDM-VW305s, 24 Channels
    • G.1.4 20 Hz Measurement Example — Six CDM-VW305s, 48 Channels
    • G.1.5 50 Hz Measurement Example — One CDM-VW300, Two Channels
    • G.1.6 50 Hz Measurement Example — One CDM-VW305, Eight Channels
    • G.1.7 50 Hz Measurement Example — Three CDM-VW305s, 24 Channels
    • G.1.8 50 Hz Measurement Example — One CDM-VW300, Two Channels, Rainflow Histogram
    • G.1.9 50 Hz Measurement Example — One CDM-VW305, Eight Channels, Rainflow Histogram
    • G.1.10 50 Hz Diagnostic Example — One CDM-VW300, Two Geokon 4000 Sensors with FieldCal()
    • G.1.11 50 Hz Measurement Example — One CDM-VW300, Two Geokon 4000 Sensors with FieldCal()
    • G.1.12 50 Hz Measurement Example — One CDM-VW300, Two Geokon 4000 Sensors with FieldCal() and CardOut() to CF
    • G.1.13 50 Hz Measurement Example — One CDM-VW300, Two Geokon 4000 Sensors with FieldCal() and TableFile() to CF
    • G.1.14 100 Hz Measurement Example — One CDM-VW300, Two Channels
    • G.1.15 100 Hz Measurement Example — One CDM-VW305, Eight Channels
  • G.2 Static Measurements
    • G.2.1 1 Hz Measurement Example — One CDM-VW300, Two Channels
    • G.2.2 1 Hz Measurement Example — One CDM-VW305, Eight Channels
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