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Sampling scopes have a high speed front end (the sampler) and a low speed storage component. The display is built up over a large number of samples over time. This requires a trigger that is stable

Harvey and all, I probably did a poor job at explaining what I'm looking for. Which is specifically the differences (pros and cons) between different types of *digital* scopes - namely between

Perhaps I can help a little, comparing, say a 7904 and a TDS540 (and leaving out the 7104 series) Analog scope pros: even frequency response up past the scope's bandwidth limit, (think ripple of a

Eric, Thank you for the input. I'll likely get both and keep one. The 11401 "doesn't start," which in my experience is more good news than not. If I can repair it and let it go to help with the

Bias to the dsa if you can they tend to me MUCH more reliable then the 11,000 series. The 602 is 1 ghz up to 12 channels of 300mhz. Usual fault in the dsas is you might need to resolder the scams

I have the opportunity to grab, likely very affordably, an 11401 and/or a DSA 602A (the latter coming with a couple of 11A34a and one 11A72 plugs), and I've never - yet - considered getting a

I don't remember where it came from. The LVPS was repaired and works fine. I had to replace a few other components damaged by the hot exhaust from the caps (see second picture for some of the

Would that instrument ever been stored in a humid environment? From what I read elsewhere, the plastic encapsulation of the Rifa cap's over time shrinks and cracks, exposing the internal capacitor to

victor.silva <daejon1@...> added the photo album 2465x RIFA madness ( /g/TekScopes2/album?id=295367 ) : RIFA Caps blowing up does occur, even on 120VAC.

It was pointed out to me over on eevblog that the "writecal" utility to restore from EXER 02 cal data does not support the later SMD A5 boards. I've developed a new version that works with the SMB

Dear Radu: About the SMD caps my experience was with 2465B scopes, I had only one TEK digital, TDS540 so no personal knowlege re the SMD cap leakage on yours. About soldering and desoldering

Jon, Thank you for pitching in. It's been a bit of a trek this far already! After more observation, I am pretty sure the work involving replacing the four SRAMs has not been in vain, the number of

suspect corroded PCB internal traces due to leaky SMD lytic. Post pix of entire PCB and closeup of SMD lytics for more ideas. Jon

The following photos have been uploaded to the TDS754D - repair images ( /g/TekScopes2/album?id=293963 ) photo album of the [email protected] group. * 05192024 Error Log.jpg (

After a gallon of sweat and a sharp back ache, I think I'm done. I'm also pretty happy with my solder joints - I am pretty sure they are all doing their job. I had a few bridges - not surprising given

I've removed the old 207, 208, 214, and 216 chips, and am trying to replace them with used, but tested chips from a helpful EEVBlog member. I am seeing a lot of resistance to their pins accepting my

Mike fine memories and work. See the patents and topologies of Cuk ad Midddlebrook in the IEEE power electronics and PESC, APEC etc. Was at CCNY, unfamiliar with your school. Enjoy, Jon

Hi Jon, I have a copy of Dean Venables book: "Stability Analysis Made Simple".? I bought that for $30 back in the Mid 1980's.? Retired for several years now, this work is just as a hobbyist.? I do

Dear Mike, bravo for the duplication of Dr Middlebrooks techniques. We are of same vintage as I knew Middlebrook and his collaborator Slobodan CUK very well. We had visited at their Caltech Pasadena

Thanks Jon, Well, I think I have the normalization factor figured out. ?It does limit the usefulness. ?I am going back through my old papers and videos from Dr. Middlebrook (went to his seminar in