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Regarding jitter reduction, can you average it out?? I recall somebody here on TekScopes mentioning using a 7854 with an S-4 or S-6 sampling head, I assume in a 7S11 or 7S12 plug-in, to get

I had a course in linear systems which used Bracewell's "The Fourier Transform and its Applications". Courtesy of the dictionary of transform pairs in the back I can work in both time and frequency

I'd personally prefer to have unrestricted access to the world wide databases of a super major oil company for about 3 years. But that's unlikely to happen. So I'm contenting myself playing with

Was this the 2465B that had the CTS installed? If so, pull all the plugs, and install jumpers on J102, pins 3&4, 1&7, and J101 pins 1&3, 6&8. The sweep won't work if those paths aren't connected...

I’d look at the A5 timing reference signals next. Those go to DR of U700 and get compared with the ramp voltage to gate the B sweep. On the A5 board they’re DLY REF 0/1. NB: did you try dual delay

Awesome, that's perfect. Got the plug back together and working again. :) Thanks!

50524242-3AFE-4A46-831F-519059D896C9.jpeg I have added 4 photos Under photos search Tek 222 Hope this helps. Craig

Reg, This sounds interesting. I have HFSS so I can analyze the kinds of circuits you describe in the frequency domain. It sounds like a high frequency peaking circuit. It may be that HFSS or some part

Yes, the math is the same no matter whether it's coplanar waveguide, seismology, anti-reflection coatings, UWB antennas, or dozens of other applications. A wave is a wave. About 8 years ago I gave a

I installed the NTE539 voltage multiplier module this evening. The output of T1320 was connected to the input lug of the V multiplier module, and the LOW lug to ground. The FOCUS lug was clipped off

1. No sweeps seem to work 2. The opamp outputs look close enough that I'm inclined to assume they're doing their job 3. THO on U900 appears stuck high for all front panel configurations I could test.

It's probably worth mentioning that unless you're planning on re-calibrating the scope, you'll want to swap the sweep hybrids back. Part of the calibration is to compensate for R/C on-hybrid component

Incidentally, it may help to understand what's inside the hybrid. If you're wondering, take a look at page 6-59 of this document < http://w140.com/tek_made_sm.pdf>. There's a fair bit of "stuff" in

I've tried cleaning U500 and U900 to no avail, and then I swapped U900 and U700 again to no avail. Will continue searching for sweeps that might work and looking at that opamp.

I suppose it might be possible to ask a more obscure question, but this really is a long shot. Does anyone have any information on the size of screws used on the aluminum backing plate for the screen

Mark, Thanks. I have to drive 150 miles round trip to access IEEE papers. I'll be collecting lots of NLTL papers the next time I go to Little Rock. At the moment I'm working on deriving the equations

I would start by pulling, cleaning and re-seating U900. Second perhaps swap U900 and U700. If that doesn't help, you might be able to narrow this down a bit by experimenting with various A/B sweep

Hmm... I've not heard of the tidbits before, although I use IEEEXplore fairly often at work.? ?I will try it tonight from a real computer.? Not so much fun trying to read serious articles on a

You could try swapping the A and B sweep generator hybrids U700 and U900, they are identical part numbers. There should be some recommendations here about cleaning the contacts (carefully!) if the

I wrote a "tidbit" on NLTL patents for Microwave Magazine. You can find it here: https://ieeexplore.ieee.org/document/7484899 There's quite a bit of history in NLTLs, so one can spend days/weeks