Subject: Re: [rescue] HP 1640a serial data analyzer
newell at cei.net
Sun Apr 13 00:09:59 CDT 2003
At 12:56 AM 4/13/2003 -0400, Larry Snyder wrote:
>Those folks did really neat stuff. The ceramic strips in your old
>545A were Tek-made. They kept the stray C down. The vertical amps
Someone told me about the strips and the special solder (with a little
silver content?). Next time I had my 556 open, sure enough, there was a
little roll of solder inside the box!
>using lots of low gain stages. There was one 500 series box that had
>7 pairs of 6DJ8's cascaded in the vertical amp. They also made
Maybe the 585, with the distributed vertical amp and distributed deflection
>the rest is pretty much history. Tek is still around, but it's
>much more marketing driven. I really miss the days when it wasn't.
I think we all do. The manuals for the old stuff are great--very
educational, full of schematics, theory of operation, and circuit
descriptions. The current Tek books that I've seen are crap.
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