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Thanks Reinhard but I am not the OP with the issue-- just trying to offer help with the 68xx programming if neccessary. Hopefully Don will also see your response. I do have one of the required TM500

Chris, Your other alternative is to just go ahead and re-calibrate it. That is what I did with mine, and although it takes some time, it isn't hard, just slog through the maintenance manual steps

I wish I could offer more direct help but time is short here currently. However, I can offer that you may not need to get Linux running on a machine just for this effort. Now, I am a nearly exclusive

Hi Chuck, Thanks for the suggestion. I do have a spare PC that I can install Linux on and I will be acquiring an EPROM burner shortly. However, I have no experience whatsoever with programming so

Hi Don, It occurs to me that if you have a linux machine, and a eprom burner, you could fix your problem by simply creating an eprom that has the 6808's jump table, and a two line program that copied

As far as the A5 board goes, there is no difference between the 2467B and the 2465B. They are identical. There is another way that I was just reminded was done by someone on tekscopes. He wrote a

Something you said earlier rang a bell in my feeble memory... once upon a time I replaced the capacitors on a memory board. The new, uncharged capacitors looked like a momentary short and dumped the

Chuck, Thank you very much for your response. As you correctly surmised, I took care to use an ungrounded soldering / desoldering iron and the backup battery was soldered to the PCB of the A5 board (I

Hi Don, I'm here, and a few other places too. Typically, losing the calibration data while changing the battery happens when you forget that your soldering/desoldering iron tip is grounded, and you

Hello all, I have posted this on the Tekscopes Forum, but I am posting it here too in the hopes that Chuck Harris sees this because I have seen a post of his on the Tekscopes Forum which might solve

I have the following manuals for sale. They are exceedingly clean. Not new, of course, but with bright pages and not dog-eared. 7D13 Digital Multimeter 070-1096-00 $15 plus S&H 7D15 Counter/Timer

In short: "I can stick a 1S2 into a 132 power supply and use the 1S2 with a Rigol scope" is not what it takes. Just realized I made a mistake here: you’re not talking about putting a sampling head

..... as a minimum consists of one *7S11* vertical input module ..... Raymond

The power supplies you mention only make sense for straight analog plug-ins. If you want to create a sampling 'scope front end, you need a vertical input *and* a special time base. Devices like a 1S2

Thanks! You wouldn't happen to have one for sale, or know of one?

Tekwiki shows the 285 power supply and 286 multiplexer.? The 285 looks like just a power supply so probably intended to use with an S50 or S52 pulse generator. Roger

Why would you suggest that? I already know that. I want to know if there's something like a 129 but smaller, as I asked in my post.

I have a TDS744A that the communication has failed between the boards. I have been following the 520 and 520m manuals and have tracked down as much i can. However the Manual is missing the page for

yes anything is possible but perhaps not worth the effort. Suggest that you first Read up on sampling: Tektronix Circuit Concepts books at W140, https://w140.com/tekwiki/wiki/Concepts_Series sampling

I can stick a 1S2 into a 132 power supply and use the 1S2 with a Rigol scope, for example. For the 560-series there's the 129, but it's quite large, rare, and seems to need more stuff before I can use