Persistent Link:
http://hdl.handle.net/10150/613030
Title:
Macintosh II Based Space Telemetry and Command (MacTAC) System
Author:
Dominy, Carol T.; Chesney, James R.; Collins, Aaron S.; Kay, W. Kevin
Affiliation:
NASA, Goddard Space Flight Center; Clemson University; RMS Technologies, Inc.
Issue Date:
1991-11
Rights:
Copyright © International Foundation for Telemetering
Collection Information:
Proceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.
Publisher:
International Foundation for Telemetering
Journal:
International Telemetering Conference Proceedings
Abstract:
NASA’s reaction to requirements for the Space Station Freedom era’s telemetry data systems has been the continuing effort to combine a modular design approach with stateof-the-art VLSI technology for developing telemetry data processing systems. As part of this effort, NASA’s Data Systems Technology Division, in cooperation with Clemson University, is developing a Macintosh II based Telemetry and Command (MacTAC) system. This system performs telemetry data processing functions including frame synchronization, Reed-Solomon decoding, and packet reassembly at moderate data rates of 5 Mbps (20 Mbps burst). The MacTAC is a low-cost, transportable, easy to use, compact system designed to meet requirements specified by the Consultative Committee for Space Data Systems (CCSDS) while remaining flexible enough to support a wide variety of other user specific telemetry processing requirements (e.g., TDM data). In addition, the MacTAC can accept or generate forward data (such as spacecraft commands), calculate and append a Polynomial Check Code (PCC), and output this data to NASCOM to provide full Telemetry and Command (TAC) capability. Semi-custom VLSI gate arrays perform the return link functions of NASCOM deblocking, correlation, and frame synchronization. Reed-Solomon decoding (for error detection) and packet reassembly are also performed by modern microprocessor and semi-custom VLSI components. The local user interface is a standard Macintosh application with the wellknown look and feel of the Macintosh environment. A remote interface is possible via Ethernet which allows the system to be completely controlled from any location capable of generating the required remote operating commands. Return link data may be viewed in real time on the local or remote user interface screen in a variety of formats along with system status information. In addition, data may also be archived on SCSI disks for later retrieval and analysis as needed. This paper describes the general architecture and functionality of this MacTAC system including the particular custom telemetry cards, the various input/output interfaces, and the icon driven user interface.
Keywords:
Macintosh; Telemetry; Functional Components
Sponsors:
International Foundation for Telemetering
ISSN:
0884-5123; 0074-9079
Additional Links:
http://www.telemetry.org/

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleMacintosh II Based Space Telemetry and Command (MacTAC) Systemen_US
dc.contributor.authorDominy, Carol T.en
dc.contributor.authorChesney, James R.en
dc.contributor.authorCollins, Aaron S.en
dc.contributor.authorKay, W. Kevinen
dc.contributor.departmentNASA, Goddard Space Flight Centeren
dc.contributor.departmentClemson Universityen
dc.contributor.departmentRMS Technologies, Inc.en
dc.date.issued1991-11-
dc.rightsCopyright © International Foundation for Telemeteringen
dc.description.collectioninformationProceedings from the International Telemetering Conference are made available by the International Foundation for Telemetering and the University of Arizona Libraries. Visit http://www.telemetry.org/index.php/contact-us if you have questions about items in this collection.en
dc.publisherInternational Foundation for Telemeteringen
dc.description.abstractNASA’s reaction to requirements for the Space Station Freedom era’s telemetry data systems has been the continuing effort to combine a modular design approach with stateof-the-art VLSI technology for developing telemetry data processing systems. As part of this effort, NASA’s Data Systems Technology Division, in cooperation with Clemson University, is developing a Macintosh II based Telemetry and Command (MacTAC) system. This system performs telemetry data processing functions including frame synchronization, Reed-Solomon decoding, and packet reassembly at moderate data rates of 5 Mbps (20 Mbps burst). The MacTAC is a low-cost, transportable, easy to use, compact system designed to meet requirements specified by the Consultative Committee for Space Data Systems (CCSDS) while remaining flexible enough to support a wide variety of other user specific telemetry processing requirements (e.g., TDM data). In addition, the MacTAC can accept or generate forward data (such as spacecraft commands), calculate and append a Polynomial Check Code (PCC), and output this data to NASCOM to provide full Telemetry and Command (TAC) capability. Semi-custom VLSI gate arrays perform the return link functions of NASCOM deblocking, correlation, and frame synchronization. Reed-Solomon decoding (for error detection) and packet reassembly are also performed by modern microprocessor and semi-custom VLSI components. The local user interface is a standard Macintosh application with the wellknown look and feel of the Macintosh environment. A remote interface is possible via Ethernet which allows the system to be completely controlled from any location capable of generating the required remote operating commands. Return link data may be viewed in real time on the local or remote user interface screen in a variety of formats along with system status information. In addition, data may also be archived on SCSI disks for later retrieval and analysis as needed. This paper describes the general architecture and functionality of this MacTAC system including the particular custom telemetry cards, the various input/output interfaces, and the icon driven user interface.en
dc.subjectMacintoshen
dc.subjectTelemetryen
dc.subjectFunctional Componentsen
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.identifier.issn0884-5123-
dc.identifier.issn0074-9079-
dc.identifier.urihttp://hdl.handle.net/10150/613030-
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.typetexten
dc.typeProceedingsen
dc.relation.urlhttp://www.telemetry.org/en
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