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Jose said: "Not many people seem to have made DIY NLTL, let alone samplers based on it." This is probably true, because NLTLs usually have lots of stages, so can get very big and complicated before

Hi all, a cheap and broken 2215A found it's way to my home :-), so now I am in the process of getting it repaired. I used this document from H?kan that helped me a lot:

You can, within limits. The 488 bus is a difficulty, and may be more happily replaced with a chip or an FPGA, your choice, although there are 488 simulators. The front panel had a separate chip that

IMHO only replace electrolytic caps that have failed, those big Sprague caps are normally OK except when they go open-circuit. Dave

I did not know about NLTLs, thanks Bruce for the heads up. For those in my case, I have found a few references on the net:

Hi all, Looking for a volt/div knob for 485. It works fine and would like to use it more. Steve KG7HYG

René Rajesh, Thanks for the replies and pics. I thought that was correct but just wanted to make sure. Thanks, Barry - N4BUQ

Hi Guys, If there is too much for Craig, I would be interested to do a sharing-type deal. I live in London, UK. Both Craig and I wouldn't have any import problems, I think. This is only if Craig can't

Thanks for the suggestions. I'm pretty certain I had all the buttons pressed correctly but I'll recheck that (wouldn't be the first time...!) and I'll try to check the unblanking circuitry. What about

Hi Folks I am working on a tek 455 scope. managed get the trace up. facing a trig problem. doesnt trig in auto/normal/single sweep. trig view signal ok. suspect trig ic 155-0122-00 is this ic used in

Hi Andre I'm near Oxford UK and would be very pleased to have these. Regards Craig

Tiny island near France, called Guernsey. www.cwgsy.net/private/mandoline "Error 008472. Horrible bug encountered. $Deity knows what happened." Where on planet earth are you? Craig

Hey Barry, Ive added two pics from my 465 to your album, the Slit needs to align in to the PCB. /g/TekScopes/album?id=64907 hope it helps, regards Rajesh

Just bought a Tek 555 scope with cart and power supply. The scope appeared to have been used until replaced by a couple of 4xx series scopes but just shunted aside when replaced. I owned and used a

Hi everyone, Please keep in mind that this DMM has been available since the very beginning of the eighties, if not late seventies. It has been designed about ten or less years after man walked on

Bruce The list doesn't accept attachments. You will have to upload it to the photos section or host it somewhere and then post a link Dave manuals@... -- Dave Manuals@...

Hi Barry, a few weeks ago I had to do the same (horrible) job of replacing the power supply caps in my 475A, same construction. And I also wondered why Tek used such a "distance" holder for the PCB to

Fellow Tekkies, I picked up a 7L14 from an estate sale this last weekend. One of the things which struck me is the bizarre serial number the thing has -- See the attached photo. My best guess is --

Hi Russ: You have a very valid point concerning corrosion due to batteries leaking.? It is probably a matter of economics that makes the manufacturer continue to provide super thin casings.? Also,

Because the batteries don't cost $20,000 each. They're made (for primary cells) as throwaways. For secondary cells, it's the cost. They've all been laid off because they are too old, those that did