Mission and Event Timers - Revision history

imported>Tschachim: Event timer can't display launch countdown.

2007-12-03T12:02:46Z

Event timer can't display launch countdown.

← Older revision		Revision as of 12:02, 3 December 2007
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	The Mission Timer in the Lunar Module is automatically set to the correct value when it is extracted from the SIVB. In reality the crew probably had to set it manually to match the CSM timer, or based on timings from the ground, but in Orbiter you can't have one person looking at the CSM panel while another looks at the LEM panel to activate the timer.		The Mission Timer in the Lunar Module is automatically set to the correct value when it is extracted from the SIVB. In reality the crew probably had to set it manually to match the CSM timer, or based on timings from the ground, but in Orbiter you can't have one person looking at the CSM panel while another looks at the LEM panel to activate the timer.

	Note that the Mission Timer does not count down to liftoff, and as far as we can determine this is the correct historical behaviour~~. If you want a countdown timer you will need to configure the Event Timer appropriately~~.		Note that the Mission Timer does not count down to liftoff, and as far as we can determine this is the correct historical behaviour.

	==Event Timer==		==Event Timer==

imported>Tschachim: /* Event Timer */

2007-11-26T14:59:26Z

Event Timer

← Older revision		Revision as of 14:59, 26 November 2007
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	[[Image:CSM-Event-Timer-Switch-Location.gif\|thumb\|250px\|right\|Location of Event Timer control switches in the Command Module on Panel 1]]		[[Image:CSM-Event-Timer-Switch-Location.gif\|thumb\|250px\|right\|Location of Event Timer control switches in the Command Module on Panel 1]]

	Unlike the Mission Timer, the Event Timer can count down as well as up. As with the Mission Timer it is reset to zero and starts counting up at launch, and it will also reset to zero in the event of an abort, to count time since the abort.		Unlike the Mission Timer, the Event Timer can count down as well as up. As with the Mission Timer it is reset to zero and starts counting up at launch, and it will also reset to zero in the event of an abort, to count time since the abort. The Event Timer is not working before launch.

	Another difference from the Mission Timer is that rather than an illuminated LED display, the Event Timer uses a more traditional design where the numbers are printed on rotating drums which turn over time. The readout can display any time from 00:00 to 59:59.		Another difference from the Mission Timer is that rather than an illuminated LED display, the Event Timer uses a more traditional design where the numbers are printed on rotating drums which turn over time. The readout can display any time from 00:00 to 59:59.

imported>Mark Grant: Cat

2006-11-16T21:29:51Z

Cat

← Older revision		Revision as of 21:29, 16 November 2006
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	[[Category:CSM systems]]		[[Category:CSM systems]]
			[[Category:LM systems]]

imported>Mark Grant at 16:08, 27 October 2006

2006-10-27T16:08:13Z

← Older revision		Revision as of 16:08, 27 October 2006
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	[[Category:CSM systems]]		[[Category:CSM systems]]
	~~[[Category:CSM System Controls]]~~

imported>Mark Grant: /* Event Timer */

2006-10-27T13:58:12Z

Event Timer

← Older revision		Revision as of 13:58, 27 October 2006
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	==Event Timer==		==Event Timer==

	[[Image:CSM-Event-Timer-Location.gif\|thumb\|250px\|left\|Location of Event Timer on the Command Module on Panel 1]]		[[Image:CSM-Event-Timer-Location.gif\|thumb\|250px\|left\|Location of Event Timer in the Command Module on Panel 1]]

	[[Image:CSM-Event-Timer-Switch-Location.gif\|thumb\|250px\|right\|Location of Event Timer control switches on the Command Module on Panel 1]]		[[Image:CSM-Event-Timer-Switch-Location.gif\|thumb\|250px\|right\|Location of Event Timer control switches in the Command Module on Panel 1]]

	Unlike the Mission Timer, the Event Timer can count down as well as up. As with the Mission Timer it is reset to zero and starts counting up at launch, and it will also reset to zero in the event of an abort, to count time since the abort.		Unlike the Mission Timer, the Event Timer can count down as well as up. As with the Mission Timer it is reset to zero and starts counting up at launch, and it will also reset to zero in the event of an abort, to count time since the abort.

imported>Mark Grant: /* Mission Timer */

2006-10-27T13:57:07Z

Mission Timer

← Older revision		Revision as of 13:57, 27 October 2006
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	The Mission Timer in the Lunar Module is automatically set to the correct value when it is extracted from the SIVB. In reality the crew probably had to set it manually to match the CSM timer, or based on timings from the ground, but in Orbiter you can't have one person looking at the CSM panel while another looks at the LEM panel to activate the timer.		The Mission Timer in the Lunar Module is automatically set to the correct value when it is extracted from the SIVB. In reality the crew probably had to set it manually to match the CSM timer, or based on timings from the ground, but in Orbiter you can't have one person looking at the CSM panel while another looks at the LEM panel to activate the timer.

			Note that the Mission Timer does not count down to liftoff, and as far as we can determine this is the correct historical behaviour. If you want a countdown timer you will need to configure the Event Timer appropriately.

	==Event Timer==		==Event Timer==

imported>Mark Grant: /* Mission Timer */

2006-10-27T12:56:33Z

Mission Timer

← Older revision		Revision as of 12:56, 27 October 2006
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	The Mission Timer requires both 28VC and 115V AC power, and a 10Hz signal from the central timing equipment in the spacecraft. It can operate by using an internal tuning fork as a reference if the timing signal is lost, in which case a small timing fork symbol will be displayed in addition to the time. Currently this is not implemented in Orbiter.		The Mission Timer requires both 28VC and 115V AC power, and a 10Hz signal from the central timing equipment in the spacecraft. It can operate by using an internal tuning fork as a reference if the timing signal is lost, in which case a small timing fork symbol will be displayed in addition to the time. Currently this is not implemented in Orbiter.

			The Mission Timer in the Lunar Module is automatically set to the correct value when it is extracted from the SIVB. In reality the crew probably had to set it manually to match the CSM timer, or based on timings from the ground, but in Orbiter you can't have one person looking at the CSM panel while another looks at the LEM panel to activate the timer.

	==Event Timer==		==Event Timer==

imported>Mark Grant at 11:35, 27 October 2006

2006-10-27T11:35:06Z

← Older revision		Revision as of 11:35, 27 October 2006
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	[[Category:CSM systems]]		[[Category:CSM systems]]
			[[Category:CSM System Controls]]

imported>Mark Grant: /* Event Timer */

2006-10-26T21:23:26Z

Event Timer

← Older revision		Revision as of 21:23, 26 October 2006
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	==Event Timer==		==Event Timer==

	[[Image:CSM-Event-Timer-Location.gif\|thumb\|250px\|left\|Location of Event Timer in the Command Module on Panel 1]]		[[Image:CSM-Event-Timer-Location.gif\|thumb\|250px\|left\|Location of Event Timer on the Command Module on Panel 1]]

	[[Image:CSM-Event-Timer-Switch-Location.gif\|thumb\|250px\|right\|Location of Event Timer in the Command Module on Panel 1]]		[[Image:CSM-Event-Timer-Switch-Location.gif\|thumb\|250px\|right\|Location of Event Timer control switches on the Command Module on Panel 1]]

	Unlike the Mission Timer, the Event Timer can count down as well as up. As with the Mission Timer it is reset to zero and starts counting up at launch, and it will also reset to zero in the event of an abort, to count time since the abort.		Unlike the Mission Timer, the Event Timer can count down as well as up. As with the Mission Timer it is reset to zero and starts counting up at launch, and it will also reset to zero in the event of an abort, to count time since the abort.

imported>Mark Grant at 21:20, 26 October 2006

2006-10-26T21:20:34Z

← Older revision		Revision as of 21:20, 26 October 2006
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	==Event Timer==		==Event Timer==

	Unlike the Mission Timer, the Event Timer can count down as well as up.		[[Image:CSM-Event-Timer-Location.gif\|thumb\|250px\|left\|Location of Event Timer in the Command Module on Panel 1]]

			[[Image:CSM-Event-Timer-Switch-Location.gif\|thumb\|250px\|right\|Location of Event Timer in the Command Module on Panel 1]]

			Unlike the Mission Timer, the Event Timer can count down as well as up. As with the Mission Timer it is reset to zero and starts counting up at launch, and it will also reset to zero in the event of an abort, to count time since the abort.

			Another difference from the Mission Timer is that rather than an illuminated LED display, the Event Timer uses a more traditional design where the numbers are printed on rotating drums which turn over time. The readout can display any time from 00:00 to 59:59.

			The MIN/SEC switches for the Event Timer operate in a similar manner to those for the Mission Timer, allowing you to change the displayed time. However, when the RESET/UP/DOWN switch is set to DOWN, the MIN/SEC switches will reduce the time displayed rather than increase it.

	==External Links==		==External Links==
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	[[Category:CSM systems]]		[[Category:CSM systems]]

	~~{{stub}}~~