[time-nuts] Sources for Mission Time Clock
Bill Hawkins
bill at iaxs.net
Sun Jan 11 12:12:26 EST 2015
Martin,
It seems like the only cost-effective way to get that display is to
find a surplus source. If that's not possible, how about mounting a
flat panel computer monitor on the wall and driving it with some
custom software in a commercial computer with a standard operating
system. There are standard ways to handle NTP, IRIG-B, and 1 PPS.
Do you need to hold the countdown the way NASA does? Does the clock
provide the electrical signal to launch or deploy?
Bill Hawkins
-----Original Message-----
From: Martin A Flynn
Sent: Sunday, January 11, 2015 9:31 AM
I am looking for a GMT/GET mission time clock that has the following
characteristics:
* Reads T minus prior to launch or deployment, T plus after.
* Second display for GMT.
* Simulating it on a PC display would be OK, would prefer an LED/LCD
version for wall mounting
There is a example of what I am looking for in the background of this
photo: https://www.hq.nasa.gov/alsj/a16/A16_116_13_15.jpg . We have
NTP, IRIG-B, and a 1 PPS source to work with.
Any suggestions on a cost-effective way to accomplish this?
Cheers
Martin Flynn
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