Hi Siggi, I find the 485 to be the nicest portable of its generation by far. It does have a pretty small screen but the image quality, low duty-cycle brightness, bandwidth and features like 50 / 1M

It's sure a beautiful color though, and the spot size is almost absurdly small. It looks like it'll resolve 10 cycles of the calibrator/div at 1MHz. The touted double writing speed isn't to write

"I can accept this feedback mechanism, but I would like to be able to disable this annoying effect. Gary" I had a quick look at the schematics (dwg 3, Front Panel Controls). All front panel (FP)

Actually, I'm beginning to think the BNC is a red herring and there's something going on behind it. Cracked resistor or bad joint? It's Channel 1 in a 7D20. Looks like it will be 'fairly easy' to get

It seems that this was all just in my mind - or a Ghost of Christmas present. Raymond " I'm pretty sure that I saw a message from or about ArtekManuals that they wouldn't respond during the

I guess you tried bending the halves in the socket back together? If they don't hold perhaps you can stuff a tiny sliver of silicone rubber behind them. The best course of action would be

I think this was designed back when floating scopes was still commonplace, and their current answer "simply don't do this crazy shit" didn't cut it. This would also explain why it was produced

Thanks, Joe. Actually, it's the + contacts that are driving me up the wall. I've put a slide bend in the pin of a tee that I use most often and that helps. I think this scope might be out of a medical

The cause could be anything anywhere in the house. The easiest way to track it down is to shut off circuit breakers one at a time until it stops. That gives you an idea where in the house the problem

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Hey Idan, I haven't taken a look at these links, but here's one place that looks to have your scope's service manuals <http://w140.com/tekwiki/wiki/466>. You need to identify your scope's serial

I got the 485 manual download from him last night as well.

Please let me know what those Youtube videos are discussing. Does any YouTube narrator take notice of this unusual LED glitching? I can accept this feedback mechanism, but I would like to be able to

Menahem, You are correct, no worries using faster than 200ns DS1225 NVRAMs. --Victor

Yes. There are several videos of 2465Bs on Youtube that show the very same thing.

I would say break ground loops in the safety ground in a relatively safe manner. Consider primary and secondary side measurements. On the primary side, you would still need an isolation transformer

I just got my 7704A stuff from Dave last night. He said he had sent it to me (to the address on my paypal account) on Dec 5, but I don't appear to have received that. This time he sent to both that

Dave just moved to Florida and is still in the process of resetting up….. keep trying…..it was a huge move for him…. jim [Non-text portions of this message have been removed]