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| 4.11.2009 |
Communications Interface Board Delivered to the US Naval Research Laboratory (NRL) : On March 18, 2009 the GRC Mobile and Remote Sensing (MARS) team, of the Optical Instrumentation and NDE Branch RHI, shipped the flight unit version of the Communications Interface Board (CIB), a radiation hardened circuit board designed and built at GRC to NRL. The CIB is the communications interface between the twenty active experiments making up the 7th Materials on the International Space Station Experiment (MISSE7), and the International Space Station (ISS) MIL-STD-1553 low rate telemetry bus. The CIB is designed and destined to remain a permanent infrastructure of the ISS and will be used for MISSE8 and beyond. Since the delivery of the CIB on March 19, 2009, the CIB has been successfully integrated into the MISSE7 interface box and the debugging of the individual experiment integrations has proceeded. Multiple wiring and experimenter errors have been located and fixed. The CIB has been responsible for no integration or operational errors and has functioned flawlessly and to specification. The 1553 bus interfacing is complex and expensive: CIB shields users from the trouble providing them with a simple dual, full duplex RS 485 serial bus architecture common to many small computers. This CIB opens up more EXPRESS logistics carrier (ELC) opportunities to GRC for future ISS experiment integration, data handling, and new project management. This work was supported by NRL under SAA-3-916. (Point of Contact: Michael Krasowski
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