NI Developer’s Forum Raytheon Oct 10-11,2006 - PowerPoint PPT Presentation

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NI Developer’s Forum Raytheon Oct 10-11,2006
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NI Developer’s Forum Raytheon Oct 10-11,2006

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  1. NI Developer’s ForumRaytheonOct 10-11,2006 • Outline • NEWS • Additional Resources • Today’s Topic • CompactDAQ

  2. NEWS • NI Technical Symposium on November 7th in Phoenix

  3. Free Services Include: Design Phase Consulting Help Select NI Products Help Find Alliance Member / Integrator Programming Advice Product Support Troubleshooting How Can I Help YOU? (Cell 271-4949)

  4. National Instruments Measurement Platforms >1MHz <1MHz Performance SCXI <250kHz <250 ch >250 ch <32 ch Channel Count

  5. CompactDAQSimple and Synchronized

  6. NI CompactDAQ

  7. Module synchronization USB technologies Isolation Core Technologies

  8. Module Popularity

  9. NI CompactDAQ Synchronization & Timing • Synchronization: • Module-to-Module: Integrated Module Controller • Chassis-to-chassis: Using PFI lines • Timing • Integrated Module Controller

  10. Integrated Module Controller: Benefits • Module auto-detection • Auto-configuration • Hot-swappable • Routes timing and • synchronization signals

  11. ADC NI-STC 2 module DAC Integrated Module Controller: Under the hood • Combines technologies Integrated Module Controller AI Adapter AO Adapter

  12. NI CompactDAQ: Architecture NI USB IP

  13. Chassis-to-chassis synchronization • Using PFI lines

  14. NI CompactDAQ Timing • Handled automatically by the Integrated Module Controller • System sampling rate depends on • Module sampling rates • Number of channels in a task

  15. Shortest Sample Period Sample Clock Mod1 SPI ai0 ai1 ai2 ai0 Mod2 Convert Clock Mod2 SPI ai0 ai1 ai2 ai0 Read Clock Example: 1 Simultaneous and 1 Multiplexed Module

  16. Sigma-delta Modules • NI 9233 (DSA), NI 9237 (Bridge) • 24-bit data • Self-timed (Onboard Oversample Clock) • Clock routed automatically to all modules

  17. NI CompactDAQ Advisor

  18. Simultaneous waveform I/O Hi-Speed signal streaming NI Signal Streaming Technology USB communication Micro-controller

  19. A More Intelligent Device • Device contains element of driver DAQmx 9215 9472 9211 9215 9263 9481 9472 9233 9237

  20. USB Transfers No Lost Data

  21. IN Token Data IN Handshake Typical Transactions Host Device PID ADDR ENDP CRC5 DATA

  22. NI Signal Streaming Technology Controller STC2 Stream FIFO USB ENPT USB Device Controller USB EP1 I/O P O R T USB EP2 To PC USB EP3 USB EP4

  23. NI Signal Streaming Technology Controller STC2 I/O DMA 1 USB Device Controller USB EP1 I/O P O R T I/O DMA 2 USB EP2 To PC I/O DMA 3 USB EP3 I/O DMA 4 USB EP4

  24. Avoid ground loops System and user safety Measure small signals on a large potential Isolation Technology

  25. Isolated Analog I/O Analog Isolation Digital Isolation

  26. Isolated Analog I/O Analog Isolation Digital Isolation

  27. Analog design reuse Reduced power consumption Cost More accurate No delay Nonlinearity associated with analog Data transfer rate Digital Isolation Technology

  28. Digital ISO Chip Layout Isolation Barrier Digital In Digital Out Conversion Circuitry Conversion Circuitry

  29. Summary • Integrated Module Controller • Communication with different types of modules • Module synchronization • System timing • NI Signal Streaming • Hi-speed streaming • Parallel streams • Isolation • Safety

  30. Modules-Analog Input/Output

  31. Modules-Digital