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Thanks for the pointers, Dave! If I can find these, they ought to get me bouncing in my seat :-) Actually, there is something out there that's close to an engineering analysis, but it mostly covers

I have a Tektronix 2246 100 MHz Oscilloscope powered this unit up and attempted to set the calibration. It indicates that it is trying to calibrate knob adjustment and to turn all knobs CW. I can't

Hello! Thanks to both of you... but my message was from September, I think, and the oscilloscope was fixed back then ;-) It was a capacitor, as you suggest. Merry Christmas! JOSE

Snips: I'm looking at the schematic of the 545A, and I suspect that the 545B has the same 350V supply. The (silicon) bridge rectifier feeds the 125uF reservoir capacitor through two ten-ohm 1W

Hello David, I'd be interested too. But in the meantime, there are some interesting chapters in a couple of books edited by Jim Williams: 'Analog Circuit Design : Art, Science and Personalities' and

Hi Stan and Miroslav I have a pdf of the 130LC manual which gives instructions on how to make the "inductance standardizer". This is used to calibrate the 300uH range of the S-30 transfer standard. It

Hello Stan, Classic". > I still have a few copies left for $24.95 I'm interested in getting a copy of your book. How much would it be including shipping to the U.K? I'd probably send an international

Looks like a problem with the power supply filter capacitor. wrote: ways to supply signal, load, a lower). This voltage the

Hi all, :) Just a note to say thanks to all who have responded on this thread. Kind regards, Michael Dunn (the other one)

I tried to read my copy once. Couldn't finish. It was too sanitized. It said exactly what management wanted it to say, namely, good things about managers. Yawn. I wanted engineering stuff and true

Hi. I`have a Tek 2246, However I don`t know how to do the calibration procedures to use time and volt cursor readings. When I trie to do, it says on the screen, TURN ALL VAR CW, I do so and nothing

Thanks Bill, your reply clarify things for me, as I said, it probably is an elementary question but I could not find any reference in my library. 73's Joe Orgnero VE7LBI

Hello stan, If you still have a copy of the Tek anniversary book available, I would like to order one. Let me know the cost of surface mailing to Canada. Thanks

Joe, It is more or less backwards from the way you ask the question. The scope input C was determined by the available technology and design skill at the time. Reducing the C at the scope input has a

Hello all, The recent messages on the subject of RC Normalizers got me curious about the values of capacitance in the input RC of scopes. Looking through an older (1971) Tek catalog I noticed that the

Hi Peter, The first item, VP-1, is a "voltage pick-off". You insert it in series with a 50 ohm cable and plug a P6056 or P6057 voltage probe tip into the little hole in the plastic part. This allows

Hi Michael, I am the guy who wrote, "OSCILLOSCOPES--Selecting and Restoring a Classic". I still have a few copies left for $24.95 and I also have a 1989 Tek catalog that covers your 2235 that you can

This is well put, Bill. My thoughts as I read it for the first time were that it seemed to dwell on "politically correct" issues a lot, like answers to why Tek located a manufacturing plant on the

Hi Miroslav, The Tek 40 Year History book is called, "Winning With People: The First 40 Years of Tektronix" by Marshall M. Lee. I don't know of any other official Tek History books. The current bunch

Comments below nfeinc wrote: You may recall that at least three companies (LaVoie, Jetronic, and Hickok) made copies of Tek scopes. I can guarantee you that Tek would NOT sell them CRT's. They