SBAU484 February   2025 AFE7728D , AFE7768D , AFE7769D

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Hardware and Software Setup
    1. 2.1 Hardware Setup
    2. 2.2 Software Setup
    3. 2.3 Test Cases
      1. 2.3.1 Initial Bringup for All Test Cases
        1. 2.3.1.1 Test Case 1: Generate Sinusoidal tx_data From NCO @ 5MHz
        2. 2.3.1.2 Test case 2: Generate Sinusoidal tx_data From NCO @ 20MHz
        3. 2.3.1.3 Test Case 3: Connect Signal Generator Output Port to RX of the AFE7769DEVM (at output power, -13dBm)
        4. 2.3.1.4 Test Case 4: Connect Signal Generator Output Port to RX of the AFE7769DEVM (at output power, -23dBm)

2.3.1.2 Test case 2: Generate Sinusoidal tx_data From NCO @ 20MHz

  1. Once the steps in "Initial bringup for all test cases" section are complete, navigate to the Channel-Controls tab in Latte and under the “Channel TDD” box, click the buttons for TX to turn them green and “Set Tdd”, as shown in Figure 2-10.
  2. Monitor the power supply connected to the AFE. The current should increase from approximately 1.2A post-Device Bring up to 2A when TDD is enabled.
  3. Connect any of the TX ports (TX1 = J7, TX2 = J8, TX3 = J9, TX4 = J10) from the AFE7769DEVM to the spectrum analyzer.
  4. Figure 2-12 represents the expected result for this test case.
    Spectrum analyzer results, 20MHz NCO Figure 2-12 Spectrum analyzer results, 20MHz NCO