Re: [midatlanticretro] Lambda Physik TRS 80 Model 1 scan control unit model 580
I am located in the Wilmington, Delaware area. Thanks for the info. I
have alot of laser stuff too, but I gave a lot of it away to Herb Johnson
a few years ago. He would probably have more ideas about the Lambda unit.
-------- Original Message --------
> From: "Christian R. Fandt" <cfandt@...>unit model 580
> Sent: Saturday, March 26, 2011 8:54 AM
> To: firstname.lastname@example.org
> Subject: Re: [midatlanticretro] Lambda Physik TRS 80 Model 1 scan control
> Ahhh, yes. Something from a field I've long thought interesting, laser
> optics. Predates by a bit my work with laser interferometry in linear
> metrology in the past. We didn't need equipment this complex for our work
> though. Very foggy memories of the commercially available hardware from
> then, unfortunately.
> Possibly used to tune the wavelength of some type of laser judging from
> apparent positioning functions on the right hand panel. The electronicsmicropositioning
> inside the attractive orange enclosure probably controls a
> stage upon which an etalon is mounted. An etalon is an opticalpatterns
> interferometer and an interferometer is an instrument used to measure
> distance, for example, through use of, in this case, interference
> of light. Therefore, tiny distances. The etalon is inserted into thelaser
> beam and the angle positioned such that the desired spectral output isfacility
> obtained. If my estimations are correct from looking at the pictures, the
> system is part of an adjustable optical filter used in an extremely high
> resolution measuring system. Maybe for semiconductor manufacturing when
> submicron positioning accuracies are very important to have.
> Maybe an engineer or technician who worked at a semiconductor fab
> back in the days when the instrument was new could fill in more info onmeasurement
> such equipment. Or an optical engineer who specialized in laser
> systems more complex than I did? Back in those days early versions oflaser
> lithography were being used for semiconductor mask making or even forCertainly
> direct photolithography of higher density integrated circuit chips. Man,
> you're causing me to dig through my memories --- which is a good exercise
> for older people :-)
> Then again, it could have been used in a company that was a fiber optic
> manufacturer or user and the thing could have been used as an instrument
> that would measure spectral performance of optical fibers, lens systems,
> transmitters, and/or receivers. Interesting to speculate on this.
> not something found everyday nowadays and is indeed an interesting usefor
> a consumer-grade computer in a very high tech application.lab
> That brings to mind the distinct probability this is not a completely
> Lambda Physik-made system, but a one-off made by a well-staffed optical
> or even a university research/teaching lab. I'd be able to figure thatout
> if I lived close by to Bill and could study the thing myself. I knowprobably
> German/European electronic and mechanical construction technique rather
> well. However, the photos show a bunch of homebrew wiring and one or more
> homemade circuit boards inside that pretty orange cabinet which pushes my
> thinking to the non-commercially made side.
> I recall Lambda Physik was a rather classy company not prone to use, um,
> cheap stuff. So, the builder had the L-P hardware at hand and then
> asked themselves: "Lessee, pay $20,000 or so for a computer system thatintended
> can be used to control this thing or pay around $1000 or so?" The
> result could have been approximately the same between the two choices, soindustrial
> which do you figure might be chosen? ;-)
> Nevertheless, this equipment is a good example of integrating a
> then-contemporary commercially available computer system into an
> type piece of equipment that is dedicated to just do something in theend.
> A type of "embedded" computing, so to speak.to
> Polish it up, neaten the wiring and stuff, and treat it as an interesting
> piece of technical history. Check for an embedded custom ROM (if this
> machine had facilities for one) and see if you can come up with some
> commands. Maybe dump the contents and rummage around for something that
> makes sense. My two EPSON HX-20s used with British-made Taylor-Hobson
> metrology devices have embedded ROMs. They are used to cause the machine
> seamlessly come up into measuring mode all ready to go and handle
> measurements taken. Wish I had those measuring machines too....
> Chris F.
> Upon the date 10:25 PM 3/22/2011, B Degnan said something like:
> >I read about this on cctalk and picked up from ebay last week...a
> >scan control unit model 580 by Lambda Physik of Germany. It uses a
> >TRS 80 model 1 as the main computer, and the scan control unit is
> >attached to the expansion port, kind of like a stringy floppy. I
> >have not yet determined for sure, or if there is a SYSTEM command
> >SYSTEM [return]
> >*/nnnnn (where nnnnn = a memory location where the ROM of the scan
> >control unit is activated ??)
> >Anyway, it's orange.
> >I have a CBM 8296 that was adapted to serve as a particle sizer of
> >some kind. I think control equipment with a vintage computer as the
> >heart of the unit is especially interesting.
> >So...what do you think this thing was used for?
> >(link includes link to lots of pictures..note the card cage inside)
> >Yahoo! Groups Links
> Christian R. and Beverly J. Fandt
> 31 Houston Avenue Electronic/Electrical Historian
> Jamestown, New York Phone: +716-488-1722
> 14701-2627 USA email: cfandt@...
> Members of Antique Wireless Association
> URL: http://www.antiquewireless.org/
> Yahoo! Groups Links