On Tue, Sep 24, 2013 at 7:04 AM, Gene Heskett <ghesk...@wdtv.com> wrote:
> > > > > Then how about this one: > > > > > > http://www.ebay.com/itm/271275574595?ssPageName=STRK:MEWAX:IT&_trksid=p3 > > 984.m1423.l2649 > > Thats a lot better, and its a good price too. But I'd need a cart, one > capable of climbing stairs, or negotiating the hill of my back yard getting > to the shop. How old is it? > Late 70's, early 80's. > > > > The beauty of those mainframe scopes is they are repairable. > > Even when the last one of that model to come off the line is 10 years old? > To repair, one must have access to the inhouse, custom made parts. My last > interface with Tek (they are AKA Grass Valley Group and make big > production house sized video switchers with effects) was when I needed one > of their custom IC's on a plate, basically a high speed op-amp. They had > one left, $1700, take it or leave it & had no idea if it was new or used or > even good. So I went looking for a video op-amp usable at those supply > voltages & talked National Semi out of 2 samples. It worked, but was > enough faster than the Tek gizmo that you could see the color shift as the > fader was moved. I should have ordered a stick of them & replaced all of > them, which would have put it all back in color phase. But putting it in > was a bitch, and really should had had a pcb made as its leads weren't > quite long enough to reach the pcb holes where the Tek part was soldered > in. If I would have had my mill cutting pcb's then, I would have. IIRC I > would have needed 144 of them. The switcher was a 24 input, 6 bus model. > Bigger control panel than the 1701-D. The better op-amp? $1.13 in 100's. > There are a few in-house parts in those scopes, but the vast majority of parts are still being made. You can usually find the in-house parts on Ebay, or through a few companies that have them in stock, both NOS and pulled from machines that became parts pigs. I've got a 7623 storage mainframe, a 7603 no-storage scope, and I've had my eye out for one of those 7854's for a while. There's also a 7103 1 GHz scope and a 7844 dual beam scope I'd love to get my hands on. > Cheers, Gene > Mark ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
