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Some notes from research:

Physical Interface:

  • RS-422 / UART -> default for commercial satellites 
    • Typical Baud Rate: 115.2 kbps
    • Effective useful data rate: 80-100 kbps
  • CAN Bus
  • Depending on how much data is generated or sent 
    • Ethernet or Spacewire (high data rate) 

-> maybe two channels? One for telemetry, health and commands (RS-422) and one for science data (ethernet)

Some data stuff:

  • Throughput data
    • Max sustained 
  • Packet format
  • Connector types and pinouts
  • Onboard time synchronization 

Expected telemetry:

  • Physical health and status of payload
  • Payload mode
  • Voltages and current
  • Temperatures 
  • Internal clocks + timing
  • Science data



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