I know nothing! As you could imagine we have our own Tek sales rep who has been a personal friend for decades, I chide him constantly about the superiority of analog scopes.
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Are those the educational-spec ones that fill the hallowed halls of many an undergraduate lab? That might be the TDS2022, but I'm not keeping model# off the top of my head.
The digital scopes have gotten enormously better, but for years I was bitching that a whole generation of people were looking at traces with tons of noise and artifacts and imagining that this was what the output signal of a power amp or preamp really looked like. Easier for reproduction in a sidebar perhaps than the output of a scope camera, but very misleading.
One successful strategy is to use a mains filter turned around, at the equipment. Since the equipment is the source and you want to prevent it spewing back junk at the mains cord and the mains, so it doesn't contaminate the rest of the world, you must supressed what comes out of the equipment.
A good mains filter BACKWARDS (connect 'load' to the mains, 'mains' to the equipment) can do wonders. Worth a try.
Jan
If you want the best trace, go back to the old 453, that was a very tight trace.
I have a production prototype Tek TDS200, and it has the same type of garbage coming of the screen. I maintain a couple older 465s for times when digital is out of t he question. One of which my wife worked on when she was on the line!
But normally the TDS does just fine for daily troubleshooting and its small and easy to use.
Cheers
Alan
I have a production prototype Tek TDS200, and it has the same type of garbage coming of the screen. I maintain a couple older 465s for times when digital is out of t he question. One of which my wife worked on when she was on the line!
But normally the TDS does just fine for daily troubleshooting and its small and easy to use.
Cheers
Alan
Good idea, I'll give it a try.
Yes, a 2 bobbin Philbert core is what I'd like to get.
And I think that the real reason for the illness of my analog scope is
that I do not switch it on any more since I've got that 2.3GHz/8GS
Infiniium. Yes, in the beginning I was insecure, too. But now I don't
want back. The triggering is simply better and you get real documentation.
And I love those active probes. No more Heisenbugs! (Observing it affects
the outcome!) And once you see the interaction of a 0.6pF load against
10 pF vs. the ground connection, now that's an eye opener! Think about the
series resonance.
regards, Gerhard
and soon to be world famous as a person who is full of him self
You're repeating this on every third page here.
Look here:
"It's only audio."
by
jean-paul Netherlands
diyAudio Moderator Emeritus
What like a ferrite.... The guys a scam artist as are his products and a perfect example of where audio is going wrong.....
Here is an example of one scam product...
http://stereotimes.com/post/bybee--quantum-signal-enhancer
Total scam, rip off and highest concentration of BS I have ever seen....
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No it isn't Andrew, and you can easily see it by looking at the circuit diagram. There is a series L followed by a // C. Obviously it works differently depending on which side you place the source.
Jan
It sounds like Andrew is expressing the opinion that the circuit you are referring to is not "good." I suppose good is relative. If a manufacturer of products needs to protect their products from line noise, on the one hand, and on the other hand they need to comply with EMC/EMI regulations for noise being injected back into the power lines (or if they just want to be good citizens), then they might need a "good" mains filter by Andrew's definition. And it's not clear that it would necessarily have to be symmetrical, I don't think.
So I post just saying something obvious, because I have no reason to believe he was utterly confused and heard the wrong word, and you post this afterword? What the
do I care to read this? We all know plenty about Jack Bybee, and this finger pointing gets really god damn old. It's like trying to tell someone cigarettes are bad, we all know how people feel on it 
Yes, radiated. That's what Jörg said in sci.electronics.design.
He used a wideband receiver to track it down.
Gerhard
So I post just saying something obvious, because I have no reason to believe he was utterly confused and heard the wrong word, and you post this afterword? What the
Sorry you don't like my comment, but it is the truth....
Never seen anything like a ferrite on any of the Bybee technology pages and never have, I was just pointing out that Bybee QP devices cannot be moved up and down a cable... which I believe was what was being implied...
It is things like the Bybee stuff that do give the hobby a bad name, and I think we should all work to getting some aspect of the hobby back into reality...
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