SPVA057 July   2026 AFE7950-SEP , AFE7950-SP

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Requirements
  6. 3Configuring AFE79xx Latte Python Script
  7. 4Post Device Configuration
    1. 4.1 Configuring SNR Monitoring Parameters
      1. 4.1.1 Configuring Monitoring Parameters for RX
      2. 4.1.2 Configuring Monitoring Parameters for FB
      3. 4.1.3 Configuring Monitoring Parameters for TX
    2. 4.2 Computing Golden Reference
    3. 4.3 Start Monitoring
    4. 4.4 Reading the Alarms
    5. 4.5 Setting the Monitoring Periodicity
    6. 4.6 Stop Monitoring
  8. 5Dynamic Change Post Configuration
  9. 6Results
  10. 7Recovery Action
  11. 8References

2 Requirements

While using the monitoring features, the user must make sure the following conditions are met:

  1. Feedback channels are used for TX SNR Monitoring- therefore, must not be used for data reception.
  2. One must make sure that both the feedback channels have external 100Ω differential termination.
  3. There is no such requirement for the RX channels.
  4. SNR Monitoring band must be selected such that the band is signal free and must not contain any external blockers. Improper band selection or signal leakage into monitoring band can trigger false alarms.