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- Command_Loss_Timer_Reset abstract "Command Loss Timer Resets are part of the CCSDS communications system to spacecraft either in Earth orbit or beyond Earth orbit.The Command Loss Timer Reset, if it is not received in a timely manner by the spacecraft generally forces the spacecraft to engage in safety and self-protection procedures. Command Loss Timer Reset systems involve both hardware and software, whereas watchdog timers are essentially hardware only affairs. Most spacecraft have more than one Command Loss Timer Reset for subsystem level safety reasons, with the Voyager craft using at least 7 of these timers. Technically the Command Loss Timer Reset is a glorified array of Watchdog timers, each with different settings.Overall spacecraft safety is very important for missions of multi-year duration. This means that the Command Loss Timer Reset subsystem has to be used to avoid multiple computer reboot events. Generally speaking, when a computer reboots it decreases the overall safety of the spacecraft for a very brief time.".
- Command_Loss_Timer_Reset wikiPageExternalLink index.htm.
- Command_Loss_Timer_Reset wikiPageExternalLink thirty.html.
- Command_Loss_Timer_Reset wikiPageID "26025178".
- Command_Loss_Timer_Reset wikiPageLength "4152".
- Command_Loss_Timer_Reset wikiPageOutDegree "5".
- Command_Loss_Timer_Reset wikiPageRevisionID "617711800".
- Command_Loss_Timer_Reset wikiPageWikiLink Category:CCSDS.
- Command_Loss_Timer_Reset wikiPageWikiLink Consultative_Committee_for_Space_Data_Systems.
- Command_Loss_Timer_Reset wikiPageWikiLink Dead_mans_switch.
- Command_Loss_Timer_Reset wikiPageWikiLink Safe_mode_(spacecraft).
- Command_Loss_Timer_Reset wikiPageWikiLink Watchdog_timer.
- Command_Loss_Timer_Reset wikiPageWikiLinkText "Command Loss Timer Reset".
- Command_Loss_Timer_Reset align "center".
- Command_Loss_Timer_Reset quote "Command Transmission & Verification Operations * Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset and HPOINT LINK with MRO on 12/21 [DOY 355/1350z]. The spacecraft received all commands sent and all commands were verified. * Voyager 2 command operations consisted of the uplink of seven bracketed Command Loss Timer Resets sent on five-minute centers using 0.5 Hz steps on 12/23 [DOY 357/0212z]. The spacecraft received three of the seven commands sent.".
- Command_Loss_Timer_Reset quote "The purpose of the [Command Loss] routine is to provide a means for the [Voyager] spacecraft to automatically respond to an on-board failure resulting in the inability to receive ground commands. Whenever a specified number of hours have elapsed without the CCS [Computer Command Subsystem] receiving a valid command, the CCS assumes a spacecraft failure and attempts to correct that failure by systematically switching to redundant hardware elements until a valid command is received.".
- Command_Loss_Timer_Reset source "NASA".
- Command_Loss_Timer_Reset title "Voyager 30 Year Mission explanation".
- Command_Loss_Timer_Reset title "Voyager Mission Operations Status Report #2009-12-25".
- Command_Loss_Timer_Reset width "50.0".
- Command_Loss_Timer_Reset wikiPageUsesTemplate Template:CCSDS.
- Command_Loss_Timer_Reset wikiPageUsesTemplate Template:Quote_box.
- Command_Loss_Timer_Reset wikiPageUsesTemplate Template:Reflist.
- Command_Loss_Timer_Reset subject Category:CCSDS.
- Command_Loss_Timer_Reset hypernym Part.
- Command_Loss_Timer_Reset type Organization.
- Command_Loss_Timer_Reset type Organization.
- Command_Loss_Timer_Reset comment "Command Loss Timer Resets are part of the CCSDS communications system to spacecraft either in Earth orbit or beyond Earth orbit.The Command Loss Timer Reset, if it is not received in a timely manner by the spacecraft generally forces the spacecraft to engage in safety and self-protection procedures. Command Loss Timer Reset systems involve both hardware and software, whereas watchdog timers are essentially hardware only affairs.".
- Command_Loss_Timer_Reset label "Command Loss Timer Reset".
- Command_Loss_Timer_Reset sameAs Q5152093.
- Command_Loss_Timer_Reset sameAs m.0b6m2b7.
- Command_Loss_Timer_Reset sameAs Q5152093.
- Command_Loss_Timer_Reset wasDerivedFrom Command_Loss_Timer_Reset?oldid=617711800.
- Command_Loss_Timer_Reset isPrimaryTopicOf Command_Loss_Timer_Reset.