Yup, Ben Krasnow has one. Real nice guy, I have sent him Vacuum goodies for his projects in the past and met him up at Valve a couple years ago.
JEOL is kind of funny. Sometimes you can get info, sometimes not. Pretty typical of Japanese company, really. If the raster is square and the image is distorted then it is the scan drive, if the raster is wonky it is the CRT drive. Look at the inputs to the amp sections and you should have a nice sawtooth form. -Jerry > On Apr 16, 2015, at 1:20 PM, Nathan McCorkle <[email protected]> wrote: > > On Thu, Apr 16, 2015 at 10:57 AM, Jerry Biehler <[email protected]> > wrote: >> So you got the one on Craigslist? > > Yup! > >> Most likely it is the scan drives for the coils on the column. They see the >> most current. If they are like my hitachi which is similar vintage it uses a >> simple analog amp module. > > Yeah that's what the seller thought too, said that they 'scoped one of > the beam rasters and what should have been a sawtooth/triangle wave > was not (was ugly). They got an image onscreen that didn't make sense, > but could see it change when they moved the sample stage... so things > seem pretty good. > >> These old scopes are pretty simple. Almost everything is analog and pretty >> easy to trace out with a scope. > > Hopefully! > >> JEOL will almost certainly not give you the manuals, they are considered >> proprietary. > > Actually I heard that someone online with a similar model, and also a > hacker, got the docs from Jeol with ease... but had to sign an NDA. > I'm going to try and wait until I get stuck to call them up, that way > I can share what I discover! > >> Mine: >> https://hackaday.io/project/3281-hitachi-s-450-scanning-electron-microscope > > Sweet! I will have to 'like' that! > _______________________________________________ > dorkbotpdx-blabber mailing list > [email protected] > http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber _______________________________________________ dorkbotpdx-blabber mailing list [email protected] http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber
