DIGITAL CONTROL INTERFACE UNIT (DCIU) FOR BPU-600
(FLIGHT HERITAGE, FALCONSAT-5)
The microcontroller-based system provides an abstraction layer between the high-level
spacecraft commands and the thruster’s low-level actuation and monitor operations.
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Unified External Addressable Memory (64kBytes)
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8 12-bit Analog Control Outputs
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48 12-bit Analog Monitor Inputs
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21 5V CMOS Digital Control Outputs
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2 TTL Digital Monitor Inputs
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Isolated Differential Asynchronous Serial Bus (RX/TX)
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Isolated Differential GPS PPS Input
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In-Flight Reprogramable Code EEPROM (128kBytes)
DIGITAL CONTROL INTERFACE UNIT (DCIU) FOR MPACS
(FLIGHT HERITAGE, FALCONSAT-3)
This rugged system provided electrical isolation, and command / control / telemetry
interface between the MPACS and the flight computer.
DIGITAL CONTROL INTERFACE UNIT (DCIU) FOR DISTURBANCE
REDUCTION UNIT, SPACE TECHNOLOGY 7, (LISA PATHFINDER)
This microprocessor-based control system provides command and telemetry interface
with the satellite avionics and controls the thrusters by adjusting electrode voltages
and flow rates.
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32kByte ROM, 32kByte RAM
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40 12-bit ADC Input Channels for PPU / Thruster monitoring
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20 12-bit DAC Output Channels for PPU / Thruster command / control
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RS422 IAU Communication
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Regulated voltage outputs for PPUs (+5V, +/-15V)
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Galvanic isolation from spacecraft chassis ground
with the satellite avionics and controls the thrusters by adjusting electrode voltages
and flow rates.
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32kByte ROM, 32kByte RAM
•
40 12-bit ADC Input Channels for PPU / Thruster monitoring
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20 12-bit DAC Output Channels for PPU / Thruster command / control
•
RS422 IAU Communication
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Regulated voltage outputs for PPUs (+5V, +/-15V)
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Galvanic isolation from spacecraft chassis ground
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