开云体育

That would be the scan I made about 14 years ago and made available to this group: /g/TekScopes/message/7215 It then has spread to various sites for free download which is OK. But

Roy it is also available on the KO4BB site as a clean PDF file down loaded it myself. they also have a lot of Tek manuals, the weekly pubs and tech notes too. Jim O

Jon, I searched Tek Wiki web site: w140.com/tekwiki/ <http://w140.com/tekwiki/> And did not find this manual. Am I looking on the right place? Is there a direct link to it? Or to the page or list of

For those curious what else is there: http://dennlec.com/buy/tektronix-manuals.html --Toby

I think the nearest you'll get to schematics is what H?kan has published < http://www.hakanh.com/dl/kits.htm>. You'll some schematics for the 644A there, though ISTR there are significant differences

Tom, This is where I found mine. It is not a service manual in the traditional sense with schematics but it does have some useful information on removing boards and voltage test points. Despite the

The clearest you will get is a service manual for TDS544A as I recall. None of the others have ever been released. Many of the sections are the same or similar though so it is still helpful. --Eric

Hi Roger, Thanks for your email. Yes, it is a TDS 684A. I actually got it running yesterday, and it is working very well. I think it had been in the surplus place for a long time, and so it took a

Tom, Do you mean a TDS 684A? I have one of these and it has serious problems with leaking of the SMD electrolytic capacitors on the acquisition board and subsequent corrosion. There are not too many

Just use a 30mm cord grip and solder a cable.

Picked up a 422 in pretty good shape but it didn't come with the AC power cord. It needs a round female socket (nema 15-5R) that's about 30 mm or 1.81" in diameter. The smallest I've found online or

LOL!? LGBTQRC?? ;-) Mark

Oh but they are! I've met several who were so conflicted that they thought they were resistors. Adrian

That it *didn't* come on immediately suggests that there may be a problem that is waiting to happen. It depends on where the potential problem might be, mostly, in such scopes, it goes into two

On Sun, 12 Aug 2018 12:17:22 -0700, you wrote: >I have recently become the proud owner of a 475 that I found abandoned at the side of a road! Other than a couple dents in the casing, it appears to be

The 'J4' connector ('J4' is silk screened right next to it) is one of the solid board-to-board connectors; It's shown with 'J4' superimposed over it in figure 7-15 in the 475 manual - on one of the

Hello Evan, I have what is left of a 556 scope. I just checked and both high voltage (plastic rectangular) enclosures are still in the chassis. The front panel and low voltage transformer are also

Look at the data sheet for the Nichicon HE series capacitors, in the 'endurance' section it says that the capacitor's life doubles (in hours) when you go up from 6.3 mm to 12.5 mm diameter. This fits

I have been told that skinny electrolytics dry out faster. Regards, Mark

Hi Mark, That is an interesting point you make about using aluminum electrolytics with a higher diameter to length ratio. A recent capacitor discussion on Tekscopes included links to capacitor data