Page History

...

• Only digital board
  • Before programming the FPGA
    • Current consumption: 327 mA at 24 V on P24V0D
    • Temperature: Stable at around 28C with fan blowing on the bottom of the board (not FPGA side)
  • After programming the FPGA
    • Current consumption: 336 mA at 24 V on P24V0D
    • Temperature: Stable at around 29C with fan blowing on the bottom of the board (not FPGA side)
  • Virtual IO
    • prsntAnalogL and prsntCarrierL both are high indicating no boards are plugged in
    • hwRev is correct: 0b0001
    • hardwareIo[7:4] works
• Digital and analog board
  • After programming the FPGA
    • Current consumption: 338 mA at 24 V on P24V0D
    • Temperature stable at around 32C now due to analog board in the way of the airflow to the digital board
  • prsntAnalogL is now low indicating that the analog board is plugged on
  • Toggling pwrEnable HIGH should turn on all the power supplies on the analog board
    • This includes supplies on the P24V0A power rail also so this must be provided from the external supply
    • Toggling the pwrEnable HIGH
    • Current consumption:
      • 440 mA at 24 V on P24V0D
      • 47 mA at 24 V on P24V0A
    • Probing on analog board:
      • P5V0A FIRST = 4.978 V
      • P5V0D FIRST = 5.013 V
      • P1V8A FIRST = 1.816 V
      • P1V8D FIRST = 1.803 V
      • P1V8D = 0.494 V
      • P3V3D = 0 V
      • P3V3A = 0 V
      • P1V8A = 0 V
      • P2V5 AVDD = 0 V
      • P2V5A SINK = 0 V
      • P0V8 DC BIAS = 0 V
    • → Something is not working on the analog board and the power sequencing!
      • Issue identified, see Issue #1
• Digital, analog and carrier board
  • prsntCarrierL is now low indicating that the carrier board is plugged on