Fast Auroral SnapshoT Explorer
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Instrument Mode Information


On board the FAST spacecraft are 16 Instrument Operation Modes (IOM's) of which 8 set parameters for the particle instruments and the other 8 set parameters for the field instruments. Each IOM emphasizes a measurement of different physical parameters on different time scales, thereby concentrating a specific science objective. The purpose of the IOM's is to essentially command each set of field/particle instruments into a set pattern such that adequate and precise scientific measurements can be made.

For more on the technical side, each IOM defines...
  • telemetry data rates (for each packet type), readout order and burst size
  • particle detector energy sweeps and accumulation times
  • fields signal selection, sample rates and density mode
  • instrument power usage, housekeeping and default mode parameters