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I asked in the sci.space.history newsgroup and got the following replies:
Found this on google...dinosaur computers aren't my thing tho...
http://klabs.org/history/apollo_11_alarms/eyles_2004/eyles_2004.htm
And
Can't give a complete answer, but hopefully can narrow it down a bit.
The "OPTICS" on the label indicates that this module was part of the
optics subsystem of the PGNCS, which on the CSM included the sextant and
the scanning telescope. The "800 CPS" means 800 Hz (Cycles Per Second),
which indicates this module was on the analog side of the loop. The
Apollo Guidance Computer (AGC) sent digital commands to the optics that
were converted to 800 Hz analog signals by the Coupling Data Unit (CDU),
which then went to the motor drive assembly (MDA) on the optics. The
shaft and trunnion angle resolvers on the optics in turn sent analog
signals back to the CDU, which converted them to digital and relayed
them to the AGC.
Since the CDU A-D and D-A channels were not dedicated to the optics, I
would guess that this module was installed on the optics side, not at
the CDU. Beyond that, I can't really guess what this module did
("compensated" for something, but what?), or where it fit into the
overall loop. The schematics I have aren't detailed enough to include it.
The sci.space group might be a place to ask any questions my might have.
Your sincerely
Alan Erskine
alan.erskine(at)bigpond.com
Australia
Posted by: Alan Erskine | April 24, 2008 at 10:21 PM
Alan,
Many thanks for taking the time to ask your network about my artifact. I appreciate it. Mysteries are fun, especially when solved.
Best, David
Posted by: David Meerman Scott | April 25, 2008 at 06:41 AM
Hi, I found this on google, if it's any help.
http://klabs.org/history/apollo_11_alarms/eyles_2004/eyles_2004.htm
Posted by: Duke | April 25, 2008 at 09:01 AM