National Instruments NI 6238 - Manual

National Instruments NI 6238

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Table of Contents:

  • Page 3 – Important Information
  • Page 5 – Contents; About This Manual
  • Page 11 – Glossary
  • Page 12 – Conventions
  • Page 13 – Related Documentation
  • Page 14 – LabVIEW
  • Page 15 – LabWindows; ANSI C without NI Application Software
  • Page 16 – .NET Languages without NI Application Software; Device Documentation and Specifications; Training Courses
  • Page 17 – Getting Started; Installing Other Software; Device Pinouts
  • Page 18 – Device Specifications; Device Accessories and Cables
  • Page 19 – DAQ System Overview; DAQ Hardware
  • Page 21 – Calibration Circuitry; Sensors and Transducers
  • Page 22 – Cables and Accessories; Custom Cabling
  • Page 23 – Programming Devices in Software
  • Page 24 – Connector Information; I/O Connector Signal Descriptions
  • Page 26 – RTSI Connector Pinout
  • Page 27 – Analog Input; Analog Input Circuitry
  • Page 28 – Analog Input Range
  • Page 29 – Method 1
  • Page 30 – Method 2
  • Page 34 – Multichannel Scanning Considerations; Use Short High-Quality Cabling; Minimize Current Step between Adjacent Channels
  • Page 35 – Avoid Scanning Faster Than Necessary
  • Page 36 – Analog Input Data Acquisition Methods; Software-Timed Acquisitions; Buffered
  • Page 37 – Analog Input Triggering; Field Wiring Considerations
  • Page 38 – Analog Input Timing Signals
  • Page 41 – AI Sample Clock Signal
  • Page 42 – Using an Internal Source; Using an External Source
  • Page 43 – Other Timing Requirements; AI Sample Clock Timebase Signal
  • Page 45 – Using a Delay from Sample Clock to Convert Clock
  • Page 47 – AI Convert Clock Timebase Signal; AI Hold Complete Event Signal
  • Page 48 – Routing AI Start Trigger to an Output Terminal
  • Page 50 – Using a Digital Source; AI Pause Trigger Signal
  • Page 51 – Getting Started with AI Applications in Software
  • Page 52 – Analog Output; Analog Output Circuitry
  • Page 53 – Analog Output Data Generation Methods; Software-Timed Generations
  • Page 55 – Analog Output Triggering; Connecting Analog Current Output Signals
  • Page 56 – Analog Output Timing Signals; AO Start Trigger Signal
  • Page 57 – AO Pause Trigger Signal
  • Page 59 – AO Sample Clock Signal
  • Page 61 – Getting Started with AO Applications in Software
  • Page 62 – Digital Input and Output; Programmable Power-Up States
  • Page 63 – Connecting Digital I/O Signals
  • Page 64 – Logic Conventions
  • Page 65 – Getting Started with DIO Applications in Software
  • Page 66 – Counters
  • Page 68 – Counter Input Applications; Counting Edges
  • Page 70 – Controlling the Direction of Counting
  • Page 71 – Pulse-Width Measurement; Buffered Pulse-Width Measurement
  • Page 72 – Period Measurement
  • Page 73 – Buffered Period Measurement
  • Page 74 – Semi-Period Measurement; Single Semi-Period Measurement
  • Page 75 – Frequency Measurement
  • Page 79 – Choosing a Method for Measuring Frequency
  • Page 81 – Position Measurement; X1 Encoding
  • Page 82 – X4 Encoding; Channel Z Behavior
  • Page 84 – Single Two-Signal Edge-Separation Measurement
  • Page 86 – Counter Output Applications; Simple Pulse Generation; Single Pulse Generation with Start Trigger
  • Page 88 – Pulse Train Generation
  • Page 89 – Frequency Generation
  • Page 90 – Frequency Division; Pulse Generation for ETS
  • Page 91 – Counter Timing Signals; Counter
  • Page 92 – Routing a Signal to Counter
  • Page 96 – Routing Frequency Output to a Terminal; Default Counter Terminals
  • Page 97 – Counter Triggering; Arm Start Trigger; Start Trigger
  • Page 98 – Other Counter Features; Cascading Counters; Counter Filters
  • Page 99 – Prescaling
  • Page 100 – Duplicate Count Prevention
  • Page 102 – Example Application That Prevents Duplicate Count
  • Page 103 – When To Use Duplicate Count Prevention; Enabling Duplicate Count Prevention in NI-DAQmx
  • Page 104 – Other Internal Source Mode
  • Page 107 – Using PFI Terminals as Timing Input Signals
  • Page 108 – Exporting Timing Output Signals Using PFI Terminals; Using PFI Terminals as Static Digital Inputs and Outputs
  • Page 109 – PFI Filters
  • Page 114 – Isolation and Digital Isolators
  • Page 115 – Digital Isolation
  • Page 116 – Reducing Common-Mode Noise
  • Page 118 – 0 MHz Timebase
  • Page 119 – 0 MHz Reference Clock; Synchronizing Multiple Devices
  • Page 121 – Using RTSI as Outputs
  • Page 122 – Using RTSI Terminals as Timing Input Signals
  • Page 123 – PXI Clock and Trigger Signals
  • Page 124 – PXI Triggers
  • Page 127 – Bus Interface; DMA Controllers
  • Page 128 – PXI Considerations; PXI and PXI Express
  • Page 129 – Using PXI with CompactPCI; Data Transfer Methods
  • Page 130 – Changing Data Transfer Methods between DMA and IRQ
  • Page 131 – Triggering; Triggering with a Digital Source
  • Page 135 – NI 6238 Accessory and Cabling Options; RTSI
  • Page 136 – Cables; Custom Cabling and Connectivity
  • Page 138 – NI 6239 Accessory and Cabling Options
  • Page 140 – Troubleshooting
  • Page 164 – Index; Symbols; Numerics
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DAQ M Series

NI 6238/6239 User Manual

Isolated Current Input/Current Output Devices

NI 6238/6239 User Manual

July 2006
371913A-01

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Summary

Page 3 - Important Information

Important Information Warranty The NI 6238/6239 is warranted against defects in materials and workmanship for a period of three years from the date of shipment, as evidenced by receipts or other documentation. National Instruments will, at its option, repair or replace equipment that proves to be de...

Page 5 - Contents; About This Manual

© National Instruments Corporation v NI 6238/6239 User Manual Contents About This Manual Conventions ................................................................................................................... xiiiRelated Documentation.............................................................

Page 11 - Glossary

Contents © National Instruments Corporation xi NI 6238/6239 User Manual Chapter 11Bus Interface DMA Controllers ........................................................................................................... 11-1PXI Considerations ............................................................

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