Persistent Link:
http://hdl.handle.net/10150/609983
Title:
A Solid State Data Recorder for Spacecraft Telemetry Applications
Author:
Stermer, Robert L, Jr.
Affiliation:
NASA Langley Research Center
Issue Date:
1978-11
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:
A Solid State Data Recorder (SSDR) has been developed which offers a high reliability alternative to tape recorders in many spacecraft telemetry applications. The storage medium used in this recorder was ferrimagnetic garnet films supporting nonvolatile magnetic "bubble" domains. This technology is very flexible and permits a recorder design which can simplify much of the interface with the telemetry system. The recorder was designed using modular construction consisting of a Digital Control Unit (DCU), Power Supply, and two Memory Modules. The Digital Control Unit (DCU) is made up of four independent microprocessor controlled data channels, configuration control, and a telemetry and test interface. The configuration can be programed so that the SSDR can operate as a 1, 2, or 4 serial channel recorder, or a single 8-bit parallel channel configuration. Each channel has a complete command set and can operate independently of the other channels. Details of the system organization and operational characteristics are presented. The Memory Module was designed with 32 magnetic assemblies, or cells, each containing 16 serial 102.4K bit magnetic "bubble" memory chips. Sense and operator electronics, and field coil drive electronics are also located in the memory module. A prototype SSDR has been fabricated. This prototype is designed for 10⁸ bits of storage but was populated with 128 chips for a 1.3 x 10⁷ bit capacity. Preliminary tests indicate satisfactory operation. Results of these tests are presented and variations with designed characteristics discussed.
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.titleA Solid State Data Recorder for Spacecraft Telemetry Applicationsen_US
dc.contributor.authorStermer, Robert L, Jr.en
dc.contributor.departmentNASA Langley Research Centeren
dc.date.issued1978-11-
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.abstractA Solid State Data Recorder (SSDR) has been developed which offers a high reliability alternative to tape recorders in many spacecraft telemetry applications. The storage medium used in this recorder was ferrimagnetic garnet films supporting nonvolatile magnetic "bubble" domains. This technology is very flexible and permits a recorder design which can simplify much of the interface with the telemetry system. The recorder was designed using modular construction consisting of a Digital Control Unit (DCU), Power Supply, and two Memory Modules. The Digital Control Unit (DCU) is made up of four independent microprocessor controlled data channels, configuration control, and a telemetry and test interface. The configuration can be programed so that the SSDR can operate as a 1, 2, or 4 serial channel recorder, or a single 8-bit parallel channel configuration. Each channel has a complete command set and can operate independently of the other channels. Details of the system organization and operational characteristics are presented. The Memory Module was designed with 32 magnetic assemblies, or cells, each containing 16 serial 102.4K bit magnetic "bubble" memory chips. Sense and operator electronics, and field coil drive electronics are also located in the memory module. A prototype SSDR has been fabricated. This prototype is designed for 10⁸ bits of storage but was populated with 128 chips for a 1.3 x 10⁷ bit capacity. Preliminary tests indicate satisfactory operation. Results of these tests are presented and variations with designed characteristics discussed.en
dc.description.sponsorshipInternational Foundation for Telemeteringen
dc.identifier.issn0884-5123-
dc.identifier.issn0074-9079-
dc.identifier.urihttp://hdl.handle.net/10150/609983-
dc.identifier.journalInternational Telemetering Conference Proceedingsen
dc.typetexten
dc.typeProceedingsen
dc.relation.urlhttp://www.telemetry.org/en
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