CIDP/SI Electrical Interfaces

• CIDP transmits and receives data to/from each SI via a dedicated serial interface

  • 38,400 baud, 8 data bits, no parity
  • Differential RS-422

• Synchronization information provided by CIDP to each SI

  • Time code transmitted after df 359
  • Valid time at nadir pulse (df 360)
  • Nadir indicated by double pulse
  • Solar view indicated by triple pulse

• Switched +28V and return

  • CIDP monitors instrument current and reports in housekeeping telemetry
  • CIDP limits ADM, SI and heater currents

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