4.6 Calibration Flow Demonstration

Figure 4-9. Calibration Flow Demonstration

In this demonstration, the user can calibrate TX parameters and RX parameters of the WILCS02_WINCS02. Perform the following steps for the demonstration of the calibration flow:

  1. Connect the RF connecter on the WILCS02_WINCS02 to the Wi-Fi® tester (IQxel or others) to measure the RF power from the WILCS02_WINCS02.
  2. Check the cable loss between the WILCS02_WINCS02 connecter to the Wi-Fi tester. Enter the cable loss or RF power offset into the Wi-Fi tester.
  3. Set the Wi-Fi tester to receive the Wi-Fi packets that are transmitted from the WILCS02_WINCS02.
  4. In the Calibration tab, the button “Erase Flash Cfg” will erase the device calibration parameters and gain tables. Use it carefully. It will show the following message after pressing this button.
    Figure 4-10. Calibration Tab
    Figure 4-11. Warning
  5. In the Calibration tab, perform the following steps to start a new calibration:
    1. To initiate the new TX calibration, click on the 1.0 Start TX Calibration button and wait for the sdAdcTemp25c and sdAdcVdd3p3v values to appear on the GUI.
      Figure 4-12. Start TX Calibration
    2. Click on 1.1.1 First Tune button.
      • Wait for the “1.1.2 Input Power” and “1.1.3 Check First Tune Result” buttons to enable.
      • Read the RF Power on the Wi-Fi tester.
      • Enter the measured RF power from the Wi-Fi tester in “1.1.2 Input Power”.
      • Click on 1.1.3 Check First Tune Result button.
      • Wait for the result to appear on the GUI.
        Figure 4-13. First Tune
      • Go to step 5.c when result is “need tune”.
      • Go to step 5.e when result is “no need tune”.
    3. Click on 1.2.1 Second Tune button.
      • Wait for the “1.2.2 Input Power” and “1.2.3 Check Second Tune Result” buttons to enable.
      • Read the RF power on the Wi-Fi tester.
      • Enter the measured RF power from the Wi-Fi tester in “1.2.2 Input Power”.
      • Click on 1.2.3 Check Second Tune Result button.
      • Wait for the result to appear on the GUI.
        Figure 4-14. Second Tune
      • Go to step 5.d when result is “need tune”.
      • Go to step 5.e when result is “no need tune”.
    4. Click on 1.3.1 Third Tune button.
      Note: This step is almost not necessary.
      • Wait for the “1.3.2 Input Power” and “1.3.3 Check Third Tune Result” buttons to enable.
      • Read the RF power on the Wi-Fi tester.
      • Enter the measured RF power from the Wi-Fi tester in “1.3.2 Input Power”.
      • Click on 1.3.3 Check Second Tune Result button.
      • Wait for the result to appear on the GUI.
        Figure 4-15. Third Tune
    5. Click on 1.4.2 Read Base TX Gain Index button.
      Figure 4-16. Read Base TX Gain Index
      • Wait for the baseTxGainIndex to appear on the GUI.
    6. Click on 1.5.1 Read TSSI and PDREF 1 button.
      • Wait for the “TSSI” and “PDREF” values to appear on the GUI.
        Figure 4-17. Read TSSI and PDREF 1
      • Read the RF Power on the Wi-Fi tester.
      • Enter the measured RF Power from the Wi-Fi tester in “1.5.2 Input Power”
      • Read the RF EVM on the Wi-Fi tester.
      • Enter the measured RF EVM from the Wi-Fi tester in “1.5.3 Input EVM”
      • Click on 1.5.4 Set Power 1 button.
      • Wait for result to appear as success.
        Figure 4-18. Set Power Success
    7. Click on 1.6.1 Read TSSI and PDREF 2 button.
      • Wait for “TSSI” and “PDREF” values to appear on the GUI.
        Figure 4-19. Read TSSI and PDREF 2
      • Read the RF Power on the Wi-Fi tester.
      • Enter the measured RF Power from the Wi-Fi tester in “1.6.2 Input Power”.
      • Read the RF EVM on the Wi-Fi tester.
      • Enter the measured RF EVM from the Wi-Fi tester in “1.6.3 Input EVM”.
      • Click on 1.6.4 Set Power 2 button.
      • Wait for result to appear as success.
        Figure 4-20. Set Power 2 Success
    8. Click on 1.7.1 Read TSSI and PDREF 3 button.
      • Wait for “TSSI” and “PDREF” values to appear on the GUI.
        Figure 4-21. Read TSSI and PDREF 3
      • Read the RF Power on the Wi-Fi tester.
      • Enter the measured RF Power from the Wi-Fi tester in “1.7.2 Input Power”.
      • Read the RF EVM on the Wi-Fi tester.
      • Enter the measured RF EVM from the Wi-Fi tester in “1.7.3 Input EVM”.
      • Click on 1.7.4 Set Power 3 button.
      • Wait for result to appear as success.
        Figure 4-22. Set Power 3 Success
    9. Click on 1.8.1 Read TSSI and PDREF 4 button.
      • Wait for “TSSI” and “PDREF” values to appear on the GUI.
        Figure 4-23. Read TSSI and PDREF 4
      • Read the RF Power on the Wi-Fi tester.
      • Enter the measured RF Power from the Wi-Fi tester in “1.8.2 Input Power”.
      • Read the RF EVM on the Wi-Fi tester.
      • Enter the measured RF EVM from the Wi-Fi tester in “1.8.3 Input EVM”.
      • Click on 1.8.4 Set Power 4 button.
      • Wait for the result to appear as success.
        Figure 4-24. Set Power 4 Success
    10. Click on 1.9.1 Read TSSI and PDREF 5 button.
      Figure 4-25. Read TSSI and PDREF 5
      • Wait for “TSSI” and “PDREF” values to appear on the GUI.
      • Read the RF Power on the Wi-Fi tester.
      • Enter the measured RF Power from the Wi-Fi tester in “1.9.2 Input Power”.
      • Read the RF EVM on the Wi-Fi tester.
      • Enter the measured RF EVM from the Wi-Fi tester in “1.9.3 Input EVM”.
      • Click on 1.9.4 Set Power 5 button
      • Wait for the result to appear as success.
        Figure 4-26. Set Power 5 Success
    11. Click on 1.10.1 Read TSSI and PDREF 6 button.
      Figure 4-27. Read TSSI and PDREF 6
      • Wait for “TSSI” and “PDREF” values to appear on the GUI.
      • Read the RF Power on the Wi-Fi tester.
      • Enter the measured RF Power from the Wi-Fi tester in “1.10.2 Input Power”.
      • Read the RF EVM on the Wi-Fi tester.
      • Enter the measured RF EVM from the Wi-Fi tester in “1.10.3 Input EVM”.
      • Click on 1.10.4 Set Power 6 button.
      • Wait for the result to appear as success.
        Figure 4-28. Set Power 6 Success
    12. Click on 1.11.1 Read TSSI and PDREF 7button.
      • Wait for “TSSI” and “PDREF” values to appear on the GUI.
        Figure 4-29. Read TSSI and PDREF 7
      • Read the RF Power on the Wi-Fi tester.
      • Enter the measured RF Power from the Wi-Fi tester in “1.11.2 Input Power”.
      • Read the RF EVM on the Wi-Fi tester.
      • Enter the measured RF EVM from the Wi-Fi tester in “1.11.3 Input EVM”.
      • Click on 1.11.4 Set Power 7 button.
      • Wait for the result to appear as success.
        Figure 4-30. Set Power 7 Success
    13. Click on 1.12 Stop TX Calibration button.
      • Wait for the “rateCond” to appear on the GUI.
        Figure 4-31. Stop TX Calibration
    14. Click on 2.0 Start RX Calibration button to start the RX calibration.
      • Wait for the result to appear as success.
        Figure 4-32. Start RX Calibration
      Note:

      The user can choose their own Wi-Fi tester tool. In this case, the IQxel Wi-Fi tester tool is shown only as an example. Change the “Power Level” setting for different scenarios in the following steps using the same IQxel Wi-Fi tester tool.

      Set the Wi-Fi tester to transmit Wi-Fi MCS7 packets at 2442 MHz and -20 dBm power level that will be received by WILCS02_WINCS02.
      Figure 4-33. IQxel Wi-Fi tester
    15. Read RSSI (-20 dBm)
      • Set -20 dBm power level in the Wi-Fi tester.
        Figure 4-34. -20 dBm power level
      • Click on 2.1 Read RSSI (-20 dBm) button.
      • Wait for “RSSI” and “LNA” values to appear on the GUI.
        Figure 4-35. Read RSSI and LNA
    16. Read RSSI (-35 dBm)
      • Set -35 dBm power level in the Wi-Fi tester.
        Figure 4-36. -35 dBm Power Level
      • Click on 2.2 Read RSSI (-35 dBm) button.
      • Wait for “RSSI” and “LNA” values to appear on the GUI.
        Figure 4-37. Read RSSI and LNA
    17. Read RSSI (-45 dBm)
      • Set -45 dBm power level in the Wi-Fi tester.
        Figure 4-38. -45 dBm Power Level
      • Click on 2.3 Read RSSI (-45 dBm) button.
      • Wait for “RSSI” and “LNA” values to appear on the GUI.
        Figure 4-39. Read RSSI and LNA
    18. Read RSSI (-50 dBm)
      • Set -50 dBm power level in the Wi-Fi tester.
        Figure 4-40. -50 dBm Power Level
      • Click on 2.4 Read RSSI (-50 dBm) button.
      • Wait for “RSSI” and “LNA” values to appear on the GUI.
        Figure 4-41. Read RSSI and LNA
    19. Read RSSI (-65 dBm)
      • Set -65 dBm power level in the Wi-Fi tester.
        Figure 4-42. -65 dBm Power Level
      • Click on 2.5 Read RSSI (-65 dBm) button.
      • Wait for “RSSI” and “LNA” values to appear on the GUI.
        Figure 4-43. Read RSSI and LNA
    20. Click on 2.6 Stop RX Calibration button.
      • If the LNA sequence does not match 0, 3, 4, 7 Go to step 5.o.
      • If the RSSI sequence does not match -20 > -35 > -45 > -50 > -65 Go to step 5.o.
        Figure 4-44. Stop RX Calibration
      • Wait for “GainCorr” value to appear on the GUI.
        Figure 4-45. Read GainCorr
    21. Click on 3. Set Params button.
      • Wait for the result to appear as success.
        Figure 4-46. Set Params
    22. Click on 4. Test Rate Cond Prepare button.
      • Wait for the result to appear as success.
        Figure 4-47. Test Rate Cond Prepare
    23. Click on 4.1.1 Test Rate Cond Start CH 1 button.
      Figure 4-48. Test Rate Cond Start CH 1
      • Read the RF Power on the Wi-Fi tester.
      • Enter the measured RF Power from the Wi-Fi tester in “4.1.2 Input Power”.
      • Read the RF EVM on the Wi-Fi tester.
      • Enter the measured RF EVM from the Wi-Fi tester in “4.1.3 Input EVM”.
      • Click on 4.1.4 Set Power 1 button.
      • Wait for the result to appear as success.
        Figure 4-49. Set Power 1 Success
    24. Click on 4.2.1 Test Rate Cond Start CH 13 button.
      Figure 4-50. Test Rate Cond Start CH 13
      • Read the RF Power on the Wi-Fi tester.
      • Enter the measured RF Power from the Wi-Fi tester in “4.2.2 Input Power”.
      • Read the RF EVM on the Wi-Fi tester.
      • Enter the measured RF EVM from the Wi-Fi tester in “4.2.3 Input EVM”.
      • Click on 4.2.4 Set Power 13 button.
      • Wait for the result to appear as success.
        Figure 4-51. Set Power 13 Success
    25. Click on 4.3 Test Rate Cond Check Result button.
      Figure 4-52. Test Rate Cond Check Result
      • If the result is not 1, go to step 5.w
      1. Click on 5. Commit Result To Device button.
        Figure 4-53. Commit Result To Device
        • Press Yes button.
        • Wait for the calibration parameters to be written to the device.
        • Wait for the gain table to be written to the device.
          Figure 4-54. Commit Result To Device
      2. Click on 6. Save Result To File button.
        • To save calibration parameters to a file, follow these steps:
          1. Open the screen below.
          2. Input the file name.
          3. Click the Save button to save the calibration parameters to the file.
            Figure 4-55. Save Result To File

        • To save the gain table to a file, follow these steps:

          1. Open the screen.
          2. Input the file name.
          3. Click on the Save button to save the gain table to the file.
            Figure 4-56. Save Gain Table to the File
Figure 4-57. Calibration GUI