2.4.0 spase://SMWG/Instrument/BARREL/DataProcessingUnit BARREL Balloon Data Processing Units 2022-04-12T12:34:56.789 2022-04-12T12:34:56.789 BARREL Data Processing Units: Initial SPASE 2.4.0 XML resource description submission, metadata submitted by LFB This document describes the full set of BARREL Balloon Data Processing Units, DPUs, and allows for search aggregation of DPU information from all balloons. The BARREL DPUs acquire data from the X-ray spectrometer, magnetometer, a GPS module, and an Engineering Data Interface, EDI. It outputs formatted data frames to an Iridium modem for downlink, and controls the command-cutdown system. The DPU is a general purpose instrument controller board, which communicates with other boards through a backplane and a memory-type interface. Flexibility is achieved through the use of an Field-Programmable Gate Array, FPGA, that contains interface logic for the backplane signals. The instrument controller board has flown successfully on three sounding rocket experiments, and about 26 balloon flights, most recently in the 2010 BARREL test flights. spase://SMWG/Person/Robyn.Millan PrincipalInvestigator spase://SMWG/Person/Lee.Frost.Bargatze MetadataContact BARREL Home Page https://barrel.rmillan.host.dartmouth.edu Main home page with links to the BARREL mission overview, data, publications, and news/events, hosted by Dartmouth College BARREL Science Team Information https://barrel.rmillan.host.dartmouth.edu/team.html Site listing BARREL science team information, hosted by Dartmouth College BARREL Mission Overview Poster https://barrel.rmillan.host.dartmouth.edu/documents/BARREL.foldout_v2.pdf BARREL mission overview summary poster, hosted by Dartmouth College BARREL Introduction: Balloon Test Flight Results and Mission Plans and Objectives, JASTP Publication https://doi.org/10.1016/j.jastp.2011.01.006 Millan, R.M., McCarthy, M.P., Sample, J.G. et al., Understanding Relativistic Electron Losses with BARREL, J. Atmos. and Sol.-Terr. Phys., 73(11-12), 1425-1434, (2011), DOI: https://doi.org/10.1016/j.jastp.2011.01.006 BARREL Campaign Plans, Science Objectives, Instrument Descriptions, Payload Design, and Support Systems, SSR Publication https://doi.org/10.1007/s11214-013-9971-z Millan, R.M., McCarthy, M.P., Sample, J.G. et al., The Balloon Array for RBSP Relativistic Electron Losses (BARREL), Space Sci. Rev., 179, 503–530 (2013). DOI: https://doi.org/10.1007/s11214-013-9971-z Platform Balloon Array for RBSP Relativistic Electron Losses (BARREL) spase://SMWG/Observatory/BARREL