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I’ve also seen bad mux chips on the A5 board cause this same error. Manuel

I don’t know what is in the Tek scopes, but if it is a FN323-1/01 as was mentioned earlier, you want a Schaffner FN9222-1-06 (and probably some isolated quick-connect connectors and a crimper so you

Hi Jim, I concur about the Nickle. It isn't worth its weight in nickel. NiCd rechargeable cells have many advantages over Li rechargeable cells as 2016 Samsung Galaxy Note 7 owners, Boeing Dreamliner

Best, Stefan There are two lists.? An excellent one by?Menahem Yachad using Mouser part numbers is here:

It just came to my attention that a copy of the AFG5101 Service manual (070-6760-00) which I scanned back in 2005 and later updated in 2009 is missing a significant portion of the electrical parts

True, Mark. It has been several decades since I have created or observed an eye diagram, after all.? I was thinking of how data patterns with long strings of ones or zeroes might not show the entire

Hello Mark, I had a 464 and mine had H.V. problems... so I know quite well this one. Well... There is no test that will give you absolute certainty that T1501 is in working order, besides seeing the

Uh, Dennis, that's Nickel, not Nickle.? A nickle is a kind of bird, and I have heard of people winning bets by asking the color of a nickle.? When people say, "silver", they lose the bet because the

Add one assumption to my statement: Assuming your data is self clocking with no clock available, has 2 or more states, transitions at fixed intervals,is random and has some sort of preamble that is

Hi Miguel, I would guess that around 1984 Mercury was banned in the US around that time. But I am pretty sure Tek used rechargeable Nickle Cadmium batteries in their scopes. Nickle Cadmium has always

Usually you want to trigger on the clock.? That way all the data transitions overlap and form the eye.? Eye closure top to bottom indicates noise, ringing, and other amplitude anomalies.? Eye

Hi John, Ok... So it seems there's a strong DC offset pushing/pulling the A Triggering pre-amplifier way out-of-range. There can be several causes to it. My own 464, for instance, had a defective FET

I don't know why this would happen, it's a mystery for you to figure out :). It might be because I'm pointing you in the wrong direction, and what's actually happening is e.g. that the trigger

can anyone advise me on a 464 ? there is no hv. checked all power supply voltages.they are ok.the hv oscillator is not running.i cant make any sense of the voltage readings i am getting on the

Yes it's definitely possible on TDS7xx. It's a bit better on the later versions (i.e. 7xxD vs 7xxA) because InstaVu was improved to include grading. Intensity is visible through color mapping. You

You really should have active data if you want a worst case eye diagram. Intersymbol interference, jitter and line reflections will vary depending on the data. Assuming your data has 2 or more states,

I took the quick and easy way: I harvested one from a recently died cd-player that happened to have a similar size line filter in it. It was only a few years old, so way newer than my 2215A.. :-) So

Hi Siggi, Thank you for the explanation. Two followup questions: 1) Why would the scope appear to pass test 05 when I manually run the diagnostics but fail on start-up? This probably doesn't change

Could someone please post the model # for a replacement of the Schaffner line filter unit for a standard 120V North American powered Tek 2215a scope ? Would this new "mysterious" replacement line

InstaVu seems like the right place to start, but I don't know a way to trigger properly (on both edges). Has anyone done this on this vintage scope? Thanks Dan