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NASA-LLIS-2737
Lessons Learned - Launch Processing System - Unprocessed Data Recording
Year: 2010
Abstract: Abstract:
While radio frequency (RF) Shuttle Main Engine telemetry data was being recorded during the vehicle ascent phase of STS-123, off-nominal noise in the data stream, combined with the use of a predefined and preset pulse code modulation (PCM) bit synchronizer, invalidated some of the Shuttle Main Engine data. Investigations revealed a deficiency in the telemetry station recording process, which was subsequently resolved by changing the RF data recording format from digital to analog.
While radio frequency (RF) Shuttle Main Engine telemetry data was being recorded during the vehicle ascent phase of STS-123, off-nominal noise in the data stream, combined with the use of a predefined and preset pulse code modulation (PCM) bit synchronizer, invalidated some of the Shuttle Main Engine data. Investigations revealed a deficiency in the telemetry station recording process, which was subsequently resolved by changing the RF data recording format from digital to analog.
Subject: Configuration control and data management
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:58:43Z | |
| date available | 2017-09-04T15:58:43Z | |
| date copyright | 04/26/2010 | |
| date issued | 2010 | |
| identifier other | RDMGFDAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/61860 | |
| description abstract | Abstract: While radio frequency (RF) Shuttle Main Engine telemetry data was being recorded during the vehicle ascent phase of STS-123, off-nominal noise in the data stream, combined with the use of a predefined and preset pulse code modulation (PCM) bit synchronizer, invalidated some of the Shuttle Main Engine data. Investigations revealed a deficiency in the telemetry station recording process, which was subsequently resolved by changing the RF data recording format from digital to analog. | |
| language | English | |
| title | NASA-LLIS-2737 | num |
| title | Lessons Learned - Launch Processing System - Unprocessed Data Recording | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;2010 | |
| contenttype | fulltext | |
| subject keywords | Configuration control and data management | |
| subject keywords | Crew Survival Systems | |
| subject keywords | Engineering design and project processes and standards | |
| subject keywords | Ground Equipment | |
| subject keywords | Ground Operations | |
| subject keywords | Ground support systems | |
| subject keywords | Human factors impact on mission design | |
| subject keywords | Launch support systems | |
| subject keywords | Security | |
| subject keywords | Software | |
| subject keywords | Test & Verification |