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Use USB_DAQ to Complete the Calibration of PGA309 EVM

Use USB_DAQ to Complete the Calibration of PGA309 EVM. Iven Xu Feb. 6 th , 2013 iven-xu@ti.com. Agenda. USB_DAQ and PGA309 EVM overview Calibration principle of PGA309 EVM Sub-bullet here Three output mode of PGA309 EVM 4-wire voltage output mode 3-wire voltage output mode

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Use USB_DAQ to Complete the Calibration of PGA309 EVM

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  1. Use USB_DAQ to Complete the Calibration of PGA309 EVM Iven Xu Feb. 6th, 2013 iven-xu@ti.com

  2. Agenda • USB_DAQ and PGA309 EVM overview • Calibration principle of PGA309 EVM • Sub-bullet here • Three output mode of PGA309 EVM • 4-wire voltage output mode • 3-wire voltage output mode • Current output mode • Multi-Calibration principle of PGA309

  3. a) 4-wire voltage output mode

  4. a) 4-wire voltage output mode: • PGA309 EVM Default Configuration

  5. a) 4-wire voltage output mode: • USB_DAQ Board Default Configuration

  6. a) 4-wire voltage output mode: Windows 7 Attention Default GUI Interface

  7. a) 4-wire voltage output mode:

  8. a) 4-wire voltage output mode:

  9. a) 4-wire voltage output mode:

  10. a) 4-wire voltage output mode:

  11. a) 4-wire voltage output mode:

  12. a) 4-wire voltage output mode:

  13. a) 4-wire voltage output mode:

  14. a) 4-wire voltage output mode:

  15. a) 4-wire voltage output mode:

  16. a) 4-wire voltage output mode:

  17. a) 4-wire voltage output mode:

  18. a) 4-wire voltage output mode:

  19. a) 4-wire voltage output mode:

  20. a) 4-wire voltage output mode:

  21. a) 4-wire voltage output mode:

  22. a) 4-wire voltage output mode:

  23. b) 3-wire voltage output mode

  24. b) 3-wire voltage output mode:

  25. c) Current output mode

  26. c) Current output mode: • USB DAQ Configuration

  27. c) Current output mode: • PGA309 EVM Configuration * When we want to use current output mode of XTR117: * we should make sure the configuration of PGA309 is in 4-wire voltage output mode; * Because in 3-wire voltage output mode of PGA309, we should turn on/off the Vs of PGA309. But in 3-wire mode, the one-wire and Vout is connect in one junction, so we cannot use one-wire to control the Vs (turn on/off). * conclusion: is we should use 4-wire voltage output for current output.

  28. c) Current output mode:

  29. c) Current output mode:

  30. c) Current output mode:

  31. c) Current output mode:

  32. c) Current output mode:

  33. c) Current output mode:

  34. Thanks!

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