/ / The challenge would be how to iteratively adjust the NVram constants without removing the NVram chips a thousand times. I don't know of any GPIB way / to SET the value of each NVram cal constant,

Did the contest apply to only Tek scopes?  Sadly, my 511A and 514AD don't work (The HV assemblies (I think) on both are dead- both had puddles of melted stuff around the assembly just above the main

Thermal Conductivity -------------------- Mica = 0.75W/mK Silicone/fiberglass = 1.3-3.0W/mK The unit of thermal conductivity is Watts per milliKelvin temperature rise. So, higher W/mK is better

The power inside of the 2465 supplies is pretty dirty from an RF point of view. It is pretty quiet from a 2x60Hz point of view. How can you tell the difference? The RF noise is composed of sliver

The 310 is close, but no cigar. The 511 was the original Tek scope, the 511AD was a later refined model, with a distributed vertical amplifier. My working (?) 513D is probably older than Alan's

Be careful here! Sometimes, the screw passes through the heatsink to a socket, and the screw is the electrical connection to the tab. Other times the screw screws into the heatsink, and must be

Michael, The cores are universal among tekscopes. I have never had one stick like you are describing. Epoxy just isn't that good. Send it to me, and I will remove it. If, in my zeal I

Chuck, Leave it to me to have the “odd ball” of the group. I have seen many others that look the same or very similar. I may take you up on your offer and contact you off list for an

Very well and detail explanation! Thank you Chuck.

I have split a number of transformers, A few thoughts 1, You should take Chuck up on the offer 2, But how are you getting the number 260F? oven dials can be way off and the temp inside an oven can

John, I will try this again at a higher temp. You are very certainly right about this. I have not done any “practice” since I don’t have anything to practice on. I guess this is my

I'm very interested in how to derive and store the correction terms. There has been discussion of a command to write them, but it appeared not to work when attempted IIRC. It would be very helpful

Hi, Wow! I waiting for your flash image very happy. Do you know if this flash simm are commercial type? In this days I continued capacitors check, I find some through hole capacitors that just start

Yes, after perusing my copy of "Oscilloscope Development, 1943-57" by Peter D. Hiscocks, I realize that one cannot beat a 511 as the earliest 'Tektronix 'scope. When I was much younger, I had a

There are practice cores in most old electronics, which are everywhere around here if you look. In particular Old PC power supplies typically have one of similar size but the wrong orientation. I am

Assuming TP46 is the PCB edge side of R567 It has about 1VAC 60hz maybe a 20 ms dc offset. It doesn't change as I exit the error message or _fiddle_ with the triggering adjustments.  - Jeff

Just remember the ferrite is a ceramic mixture, so it was once heated much hotter than your oven will ever go. Good gloves so you don't burn yourself, don't worry about the winding. Soak it in the

It should be exactly 0.8Vp-p, with no offset. See the waveform picture in the manual. The scope's power on test routing attempts to measure the peaks of that sine'ish waveform as a verification of

FWIW I set up my 11801 using the internal trigger and feeding a ~100 kHz ramp from my 33622A. By making slight adjustments to the ramp frequency I get a straight line which intersects the graticule

Ha. This reminds me of Jeff Potter's book "Cooking for Geeks", where he intentionally disables the self-cleaning interlock on his range to see how fast he can cook a pizza. ISTR that he got the oven