Profile • Gigabit interfaces are those that run at line speeds of one gigabit per second and above (>1 Gbps). These interfaces are often tasked with the primary purpose of pushing large amounts of mission data to other nodes for processing. Some examples of these interfaces include: Serial RapidIO SpaceFibre Gigabit Ethernet...
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Gigabit Interfaces
Profile • Gigabit interfaces are those that run at line speeds of one gigabit per second and above (>1 Gbps). These interfaces are often tasked with the primary purpose of pushing large amounts of mission data to other nodes for processing. Some examples of these interfaces include: Serial RapidIO SpaceFibre Gigabit Ethernet...
Glossary
Other • Term Definition Adaptability A system design property that refers to an architecture’s ability to be easily changed or adjusted to accommodate different system needs. Address Translation allows addresses to be translated from abstract to physical Atomic An operation during which a processor can simultaneously read a location and write it...
Gravity Release Impact
Specification • The JAS mechanical structure shall remain within given displacements as applied by determining gravity release impacts on the mechanical structure.
Grounding
Specification • Grounding provisions are required for the mechanical design to eliminate the potential for ESD charging on floating metal. Any component members with surface areas greater than 20 cm2 shall have a grounding provision. Bolted fittings are acceptable as grounding provisions if the joint meets the electrical resistance requirement for bonding....
Header
Specification • JRDDP Packet Format Destination Address The first byte of the header shall contain the Destination SpaceWire Logical Address (SLA) field that is associated with the destination TEP to which the packet is being sent. Protocol ID The second byte of the header shall contain the SpaceWire Protocol ID field and...
High Speed Data Switch
Profile • Processing intensive systems may require many RP nodes to reduce large amounts of sensor data to an information set that can be downloaded to ground through bandwidth-limited downlinks. In many of these situations, processing will be distributed across many RP nodes connected through gigabit interfaces. A high-speed data switch could...
Host Vehicle Interface
Profile • The primary function of this instantiation is to enable connection between the CH node and host vehicle by providing appropriate connectors and bridging differing electrical signaling standards. A mezzanine connector, active transceivers, level shifters, and connectors for cabling to the host vehicle are common examples of components that would be...
Host Vehicle Interface and Configuration Manager
Profile • The primary role of the CH node in this application is to connect payloads to the host vehicle and to serve as the system controller for payload operations. These functions are implemented through software services running on the radiation-hardened microprocessor. Host Vehicle Interface and Configuration Manager Instantiation A radiation-hardened FPGA...
Humidity
Specification • The JAS housing shall meet all performance specifications during exposure to relative humidity varying from 0% to 60%.
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