The Instrument Control Package (ICP) is the primary interface between the Spacecraft avionics systems and the Instrument Payload. The ICP manages the distribution of power to each of the ICON instruments, and it manages the flow of data from the instruments that is routed to the Spacecraft solid state recorder. Commands are sent to the ICP to control the mode of the instruments. For example, the ICP controls the apertures in the MIGHTI optical systems, and it controls the FUV turret position. All of the Payload heaters are controlled by the ICP. The flight software (FSW) for the Payload resides on the Data Control Board (DCB) which is one board in the ICP. The FSW is programmed to manage all facets of instrument operation, whether it's related to control, or data processing.
ICON's Instrument Control Package
Each of the ICP's four electronics boards is assembled at the Space Sciences Laboratory
, in accordance with NASA-approved procedures and inspection criteria.The ICP integrates all the capabilities necessary to run all four instruments into one unit. ICP contains all the following boards:
- Digital Control Board DCB w (2MB MRAM) - Provides all capability to command instruments and accept all sensor data
- Power Control Board PCB - Provides all power to instruments, instrument heaters, and motors.
- TEC Power Supply (for MIGHTI) TPS - Power supply specifically to drive the TEC cooler for MIGHTI.
- Low Voltage Power Supply LVPS - Provides secondary power to instrument cameras and survival heaters
The schematic block diagram shows how these boards connect to the instruments