Apart from the dumpster finds with an old beauty face down in the debris, I am reminded of one story from my days working in the Tek 7000 series marketing group. One of my colleagues, Eric, went to vi

As I recall after some 40 years or so, the 7603 shipped with the grey filter/implosion shield 337-1700-00 installed and the other two filters came along for the ride as standard accessories. As these

Jerry, I am glad that you found the Preliminary Service books. Kurt R. was very generous to feed those beasts to the document scanner. Although the books are preliminary, they are not too far from wha

I had a similar problem on an early 7k prototype mainframe Vert Mode Select switch. I could not find loose replacement parts. *******WARNING********** Collectors and instrument restorers should not re

Dennis, You are very wrong about Tektronix. The cafeteria has indeed re-opened! Clark

One unexpected source of jitter on the 11800 series is the timebase delay/position setting. The horizontal position is not phase locked to anything. As such, long delay times (e.g. greater than 1us) r

The codes are listed in table 3-1 on (or near) page 3-9 of the 7854 service manual and in table 1-3 on page 1-7 of the7854 operator's manual. I have posted the table at https://groups.io/g/TekScopes/a

If the inner shaft is long enough, try to scavenge it from the unit that I sent. After you tear into it, you can decide if it is possible to replace the broken one. Have fun!

Pity

Sergey, Take care to verify that the detents and codes are compatible. The unit that I sent has one detent for each 1/4 phase of the quadrature. Some designs that integrated encoders relied on the ful

I can send a mechanical sample to you if you want to try to replace the shaft in your original encoder. The mechanical parts are fine but the electrical endcoding does not match the detents. You can s

I have a few encoder samples from that era but they do not have the part number. I cannot be certain that my old samples are the same as what was finally used in the CG5011. I posted some photographs

Pete, The keycap has two little tabs that snap over the momentary switch. I will send a photo if you have not resolved this yet. Removing the keycap requires access to the button board because the key